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(svn r13667) -Documentation: Comment 'tgp.cpp' a bit. Based on patch by CommanderZ.
author frosch <frosch@openttd.org>
date Mon, 30 Jun 2008 19:54:03 +0000
parents 6cc951d7af12
children 5657445ea7ee
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1 /* $Id$ */
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2
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3 /** @file tgp.cpp OTTD Perlin Noise Landscape Generator, aka TerraGenesis Perlin */
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5 #include "stdafx.h"
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6 #include <math.h>
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7 #include "openttd.h"
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8 #include "clear_map.h"
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9 #include "clear_map.h"
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10 #include "variables.h"
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11 #include "void_map.h"
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12 #include "tgp.h"
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13 #include "genworld.h"
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14 #include "core/alloc_func.hpp"
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15 #include "core/random_func.hpp"
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16 #include "settings_type.h"
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17 #include "landscape_type.h"
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19 #include "table/strings.h"
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21 /*
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22 *
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23 * Quickie guide to Perlin Noise
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24 * Perlin noise is a predictable pseudo random number sequence. By generating
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25 * it in 2 dimensions, it becomes a useful random map, that for a given seed
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26 * and starting X & Y is entirely predictable. On the face of it, that may not
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27 * be useful. However, it means that if you want to replay a map in a different
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28 * terrain, or just vary the sea level, you just re-run the generator with the
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29 * same seed. The seed is an int32, and is randomised on each run of New Game.
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30 * The Scenario Generator does not randomise the value, so that you can
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31 * experiment with one terrain until you are happy, or click "Random" for a new
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32 * random seed.
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33 *
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34 * Perlin Noise is a series of "octaves" of random noise added together. By
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35 * reducing the amplitude of the noise with each octave, the first octave of
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36 * noise defines the main terrain sweep, the next the ripples on that, and the
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37 * next the ripples on that. I use 6 octaves, with the amplitude controlled by
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38 * a power ratio, usually known as a persistence or p value. This I vary by the
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39 * smoothness selection, as can be seen in the table below. The closer to 1,
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40 * the more of that octave is added. Each octave is however raised to the power
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41 * of its position in the list, so the last entry in the "smooth" row, 0.35, is
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42 * raised to the power of 6, so can only add 0.001838... of the amplitude to
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43 * the running total.
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44 *
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45 * In other words; the first p value sets the general shape of the terrain, the
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46 * second sets the major variations to that, ... until finally the smallest
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47 * bumps are added.
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48 *
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49 * Usefully, this routine is totally scaleable; so when 32bpp comes along, the
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50 * terrain can be as bumpy as you like! It is also infinitely expandable; a
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51 * single random seed terrain continues in X & Y as far as you care to
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52 * calculate. In theory, we could use just one seed value, but randomly select
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53 * where in the Perlin XY space we use for the terrain. Personally I prefer
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54 * using a simple (0, 0) to (X, Y), with a varying seed.
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55 *
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56 *
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57 * Other things i have had to do: mountainous wasnt mountainous enough, and
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58 * since we only have 0..15 heights available, I add a second generated map
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59 * (with a modified seed), onto the original. This generally raises the
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60 * terrain, which then needs scaling back down. Overall effect is a general
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61 * uplift.
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62 *
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63 * However, the values on the top of mountains are then almost guaranteed to go
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64 * too high, so large flat plateaus appeared at height 15. To counter this, I
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65 * scale all heights above 12 to proportion up to 15. It still makes the
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66 * mountains have flatish tops, rather than craggy peaks, but at least they
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67 * arent smooth as glass.
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68 *
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69 *
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70 * For a full discussion of Perlin Noise, please visit:
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71 * http://freespace.virgin.net/hugo.elias/models/m_perlin.htm
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72 *
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73 *
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74 * Evolution II
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75 *
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76 * The algorithm as described in the above link suggests to compute each tile height
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77 * as composition of several noise waves. Some of them are computed directly by
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78 * noise(x, y) function, some are calculated using linear approximation. Our
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79 * first implementation of perlin_noise_2D() used 4 noise(x, y) calls plus
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80 * 3 linear interpolations. It was called 6 times for each tile. This was a bit
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81 * CPU expensive.
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82 *
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83 * The following implementation uses optimized algorithm that should produce
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84 * the same quality result with much less computations, but more memory accesses.
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85 * The overal speedup should be 300% to 800% depending on CPU and memory speed.
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86 *
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87 * I will try to explain it on the example below:
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88 *
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89 * Have a map of 4 x 4 tiles, our simplifiead noise generator produces only two
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90 * values -1 and +1, use 3 octaves with wave lenght 1, 2 and 4, with amplitudes
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91 * 3, 2, 1. Original algorithm produces:
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92 *
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93 * h00 = lerp(lerp(-3, 3, 0/4), lerp(3, -3, 0/4), 0/4) + lerp(lerp(-2, 2, 0/2), lerp( 2, -2, 0/2), 0/2) + -1 = lerp(-3.0, 3.0, 0/4) + lerp(-2, 2, 0/2) + -1 = -3.0 + -2 + -1 = -6.0
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94 * h01 = lerp(lerp(-3, 3, 1/4), lerp(3, -3, 1/4), 0/4) + lerp(lerp(-2, 2, 1/2), lerp( 2, -2, 1/2), 0/2) + 1 = lerp(-1.5, 1.5, 0/4) + lerp( 0, 0, 0/2) + 1 = -1.5 + 0 + 1 = -0.5
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95 * h02 = lerp(lerp(-3, 3, 2/4), lerp(3, -3, 2/4), 0/4) + lerp(lerp( 2, -2, 0/2), lerp(-2, 2, 0/2), 0/2) + -1 = lerp( 0, 0, 0/4) + lerp( 2, -2, 0/2) + -1 = 0 + 2 + -1 = 1.0
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96 * h03 = lerp(lerp(-3, 3, 3/4), lerp(3, -3, 3/4), 0/4) + lerp(lerp( 2, -2, 1/2), lerp(-2, 2, 1/2), 0/2) + 1 = lerp( 1.5, -1.5, 0/4) + lerp( 0, 0, 0/2) + 1 = 1.5 + 0 + 1 = 2.5
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97 *
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98 * h10 = lerp(lerp(-3, 3, 0/4), lerp(3, -3, 0/4), 1/4) + lerp(lerp(-2, 2, 0/2), lerp( 2, -2, 0/2), 1/2) + 1 = lerp(-3.0, 3.0, 1/4) + lerp(-2, 2, 1/2) + 1 = -1.5 + 0 + 1 = -0.5
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99 * h11 = lerp(lerp(-3, 3, 1/4), lerp(3, -3, 1/4), 1/4) + lerp(lerp(-2, 2, 1/2), lerp( 2, -2, 1/2), 1/2) + -1 = lerp(-1.5, 1.5, 1/4) + lerp( 0, 0, 1/2) + -1 = -0.75 + 0 + -1 = -1.75
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100 * h12 = lerp(lerp(-3, 3, 2/4), lerp(3, -3, 2/4), 1/4) + lerp(lerp( 2, -2, 0/2), lerp(-2, 2, 0/2), 1/2) + 1 = lerp( 0, 0, 1/4) + lerp( 2, -2, 1/2) + 1 = 0 + 0 + 1 = 1.0
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101 * h13 = lerp(lerp(-3, 3, 3/4), lerp(3, -3, 3/4), 1/4) + lerp(lerp( 2, -2, 1/2), lerp(-2, 2, 1/2), 1/2) + -1 = lerp( 1.5, -1.5, 1/4) + lerp( 0, 0, 1/2) + -1 = 0.75 + 0 + -1 = -0.25
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102 *
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103 *
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104 * Optimization 1:
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105 *
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106 * 1) we need to allocate a bit more tiles: (size_x + 1) * (size_y + 1) = (5 * 5):
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107 *
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108 * 2) setup corner values using amplitude 3
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109 * { -3.0 X X X 3.0 }
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110 * { X X X X X }
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111 * { X X X X X }
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112 * { X X X X X }
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113 * { 3.0 X X X -3.0 }
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114 *
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115 * 3a) interpolate values in the middle
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116 * { -3.0 X 0.0 X 3.0 }
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117 * { X X X X X }
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118 * { 0.0 X 0.0 X 0.0 }
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119 * { X X X X X }
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120 * { 3.0 X 0.0 X -3.0 }
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121 *
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122 * 3b) add patches with amplitude 2 to them
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123 * { -5.0 X 2.0 X 1.0 }
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124 * { X X X X X }
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125 * { 2.0 X -2.0 X 2.0 }
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126 * { X X X X X }
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127 * { 1.0 X 2.0 X -5.0 }
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128 *
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129 * 4a) interpolate values in the middle
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130 * { -5.0 -1.5 2.0 1.5 1.0 }
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131 * { -1.5 -0.75 0.0 0.75 1.5 }
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132 * { 2.0 0.0 -2.0 0.0 2.0 }
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133 * { 1.5 0.75 0.0 -0.75 -1.5 }
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134 * { 1.0 1.5 2.0 -1.5 -5.0 }
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135 *
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136 * 4b) add patches with amplitude 1 to them
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137 * { -6.0 -0.5 1.0 2.5 0.0 }
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138 * { -0.5 -1.75 1.0 -0.25 2.5 }
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139 * { 1.0 1.0 -3.0 1.0 1.0 }
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140 * { 2.5 -0.25 1.0 -1.75 -0.5 }
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141 * { 0.0 2.5 1.0 -0.5 -6.0 }
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142 *
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143 *
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144 *
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145 * Optimization 2:
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146 *
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147 * As you can see above, each noise function was called just once. Therefore
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148 * we don't need to use noise function that calculates the noise from x, y and
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149 * some prime. The same quality result we can obtain using standard Random()
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150 * function instead.
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151 *
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152 */
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153
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154 #ifndef M_PI_2
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155 #define M_PI_2 1.57079632679489661923
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156 #define M_PI 3.14159265358979323846
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157 #endif /* M_PI_2 */
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158
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159 /** Fixed point type for heights */
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160 typedef int16 height_t;
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161 static const int height_decimal_bits = 4;
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162 static const height_t _invalid_height = -32768;
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163
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164 /** Fixed point array for amplitudes (and percent values) */
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165 typedef int amplitude_t;
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166 static const int amplitude_decimal_bits = 10;
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167
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168 /** Height map - allocated array of heights (MapSizeX() + 1) x (MapSizeY() + 1) */
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169 struct HeightMap
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170 {
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171 height_t *h; //< array of heights
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172 uint dim_x; //< height map size_x MapSizeX() + 1
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173 uint total_size; //< height map total size
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174 uint size_x; //< MapSizeX()
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175 uint size_y; //< MapSizeY()
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176
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177 /**
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178 * Height map accessor
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179 * @param x X position
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180 * @param y Y position
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181 * @return height as fixed point number
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182 */
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183 inline height_t &height(uint x, uint y) {
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184 return h[x + y * dim_x];
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185 }
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186 };
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187
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188 /** Global height map instance */
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189 static HeightMap _height_map = {NULL, 0, 0, 0, 0};
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190
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191 /** Conversion: int to height_t */
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192 #define I2H(i) ((i) << height_decimal_bits)
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193 /** Conversion: height_t to int */
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194 #define H2I(i) ((i) >> height_decimal_bits)
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195
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196 /** Conversion: int to amplitude_t */
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197 #define I2A(i) ((i) << amplitude_decimal_bits)
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198 /** Conversion: amplitude_t to int */
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199 #define A2I(i) ((i) >> amplitude_decimal_bits)
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200
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201 /** Conversion: amplitude_t to height_t */
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202 #define A2H(a) ((a) >> (amplitude_decimal_bits - height_decimal_bits))
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203
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204
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205 /** Walk through all items of _height_map.h */
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206 #define FOR_ALL_TILES_IN_HEIGHT(h) for (h = _height_map.h; h < &_height_map.h[_height_map.total_size]; h++)
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207
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208 /** Noise amplitudes (multiplied by 1024)
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209 * - indexed by "smoothness setting" and log2(frequency) */
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210 static const amplitude_t _amplitudes_by_smoothness_and_frequency[4][12] = {
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211 /* Very smooth */
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212 {16000, 5600, 1968, 688, 240, 16, 16, 0, 0, 0, 0, 0},
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213 /* Smooth */
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214 {16000, 16000, 6448, 3200, 1024, 128, 16, 0, 0, 0, 0, 0},
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215 /* Rough */
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216 {16000, 19200, 12800, 8000, 3200, 256, 64, 0, 0, 0, 0, 0},
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217 /* Very Rough */
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218 {24000, 16000, 19200, 16000, 8000, 512, 320, 0, 0, 0, 0, 0},
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219 };
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220
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221 /** Desired water percentage (100% == 1024) - indexed by _settings_game.difficulty.quantity_sea_lakes */
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222 static const amplitude_t _water_percent[4] = {20, 80, 250, 400};
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223
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224 /** Desired maximum height - indexed by _settings_game.difficulty.terrain_type */
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225 static const int8 _max_height[4] = {
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226 6, ///< Very flat
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227 9, ///< Flat
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228 12, ///< Hilly
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229 15 ///< Mountainous
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230 };
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231
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232 /** Check if a X/Y set are within the map.
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233 * @param x coordinate x
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234 * @param y coordinate y
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235 * @return true if within the map
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236 */
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237 static inline bool IsValidXY(uint x, uint y)
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238 {
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239 return ((int)x) >= 0 && x < _height_map.size_x && ((int)y) >= 0 && y < _height_map.size_y;
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240 }
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241
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242
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243 /**
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244 * Allocate array of (MapSizeX()+1)*(MapSizeY()+1) heights and init the _height_map structure members
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245 * @return true on success
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246 */
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247 static inline bool AllocHeightMap()
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248 {
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249 height_t *h;
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250
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251 _height_map.size_x = MapSizeX();
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252 _height_map.size_y = MapSizeY();
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253
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254 /* Allocate memory block for height map row pointers */
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255 _height_map.total_size = (_height_map.size_x + 1) * (_height_map.size_y + 1);
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256 _height_map.dim_x = _height_map.size_x + 1;
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257 _height_map.h = CallocT<height_t>(_height_map.total_size);
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258 if (_height_map.h == NULL) return false;
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259
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260 /* Iterate through height map initialize values */
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261 FOR_ALL_TILES_IN_HEIGHT(h) *h = _invalid_height;
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262
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263 return true;
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264 }
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265
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266 /** Free height map */
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267 static inline void FreeHeightMap()
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268 {
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269 if (_height_map.h == NULL) return;
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270 free(_height_map.h);
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271 _height_map.h = NULL;
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272 }
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273
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274 /**
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275 * Generates new random height in given amplitude (generated numbers will range from - amplitude to + amplitude)
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276 * @param rMax Limit of result
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277 * @return generated height
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278 */
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279 static inline height_t RandomHeight(amplitude_t rMax)
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280 {
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281 amplitude_t ra = (Random() << 16) | (Random() & 0x0000FFFF);
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282 height_t rh;
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283 /* Spread height into range -rMax..+rMax */
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284 rh = A2H(ra % (2 * rMax + 1) - rMax);
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285 return rh;
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286 }
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287
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288 /**
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289 * One interpolation and noise round
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290 *
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291 * The heights on the map are generated in an iterative process.
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292 * We start off with a frequency of 1 (log_frequency == 0), and generate heights only for corners on the most coarsly mesh
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293 * (i.e. only for x/y coordinates which are multiples of the minimum edge length).
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294 *
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295 * After this initial step the frequency is doubled (log_frequency incremented) each iteration to generate corners on the next finer mesh.
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296 * The heights of the newly added corners are first set by interpolating the heights from the previous iteration.
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297 * Finally noise with the given amplitude is applied to all corners of the new mesh.
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298 *
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299 * Generation terminates, when the frequency has reached the map size. I.e. the mesh is as fine as the map, and every corner height
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300 * has been set.
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301 *
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302 * @param log_frequency frequency (logarithmic) to apply noise for
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303 * @param amplitude Amplitude for the noise
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304 * @return false if we are finished (reached the minimal step size / highest frequency)
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305 */
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306 static bool ApplyNoise(uint log_frequency, amplitude_t amplitude)
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307 {
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308 uint size_min = min(_height_map.size_x, _height_map.size_y);
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309 uint step = size_min >> log_frequency;
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diff changeset
310 uint x, y;
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311
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parents: 9606
diff changeset
312 /* Trying to apply noise to uninitialized height map */
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313 assert(_height_map.h != NULL);
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314
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315 /* Are we finished? */
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316 if (step == 0) return false;
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317
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318 if (log_frequency == 0) {
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319 /* This is first round, we need to establish base heights with step = size_min */
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320 for (y = 0; y <= _height_map.size_y; y += step) {
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diff changeset
321 for (x = 0; x <= _height_map.size_x; x += step) {
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322 height_t height = (amplitude > 0) ? RandomHeight(amplitude) : 0;
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323 _height_map.height(x, y) = height;
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324 }
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325 }
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326 return true;
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327 }
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328
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329 /* It is regular iteration round.
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330 * Interpolate height values at odd x, even y tiles */
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331 for (y = 0; y <= _height_map.size_y; y += 2 * step) {
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332 for (x = 0; x < _height_map.size_x; x += 2 * step) {
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333 height_t h00 = _height_map.height(x + 0 * step, y);
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334 height_t h02 = _height_map.height(x + 2 * step, y);
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335 height_t h01 = (h00 + h02) / 2;
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336 _height_map.height(x + 1 * step, y) = h01;
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337 }
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338 }
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339
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340 /* Interpolate height values at odd y tiles */
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341 for (y = 0; y < _height_map.size_y; y += 2 * step) {
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diff changeset
342 for (x = 0; x <= _height_map.size_x; x += step) {
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frosch <frosch@openttd.org>
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343 height_t h00 = _height_map.height(x, y + 0 * step);
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frosch <frosch@openttd.org>
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344 height_t h20 = _height_map.height(x, y + 2 * step);
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345 height_t h10 = (h00 + h20) / 2;
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346 _height_map.height(x, y + 1 * step) = h10;
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347 }
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348 }
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349
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frosch <frosch@openttd.org>
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diff changeset
350 /* Add noise for next higher frequency (smaller steps) */
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351 for (y = 0; y <= _height_map.size_y; y += step) {
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352 for (x = 0; x <= _height_map.size_x; x += step) {
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353 _height_map.height(x, y) += RandomHeight(amplitude);
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354 }
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355 }
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356
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357 return (step > 1);
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358 }
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359
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360 /** Base Perlin noise generator - fills height map with raw Perlin noise */
6247
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diff changeset
361 static void HeightMapGenerate()
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362 {
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363 uint size_min = min(_height_map.size_x, _height_map.size_y);
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364 uint iteration_round = 0;
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365 amplitude_t amplitude;
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366 bool continue_iteration;
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367 uint log_size_min, log_frequency_min;
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368 int log_frequency;
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369
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370 /* Find first power of two that fits */
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371 for (log_size_min = 6; (1U << log_size_min) < size_min; log_size_min++) { }
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372 log_frequency_min = log_size_min - 6;
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373
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diff changeset
374 /* Keep increasing the frequency until we reach the step size equal to one tile */
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375 do {
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376 log_frequency = iteration_round - log_frequency_min;
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377 if (log_frequency >= 0) {
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frosch <frosch@openttd.org>
parents: 9606
diff changeset
378 /* Apply noise for the next frequency */
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rubidium <rubidium@openttd.org>
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diff changeset
379 amplitude = _amplitudes_by_smoothness_and_frequency[_settings_game.game_creation.tgen_smoothness][log_frequency];
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380 } else {
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frosch <frosch@openttd.org>
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diff changeset
381 /* Amplitude for the low frequencies on big maps is 0, i.e. initialise with zero height */
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382 amplitude = 0;
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383 }
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384 continue_iteration = ApplyNoise(iteration_round, amplitude);
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diff changeset
385 iteration_round++;
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frosch <frosch@openttd.org>
parents: 9606
diff changeset
386 } while (continue_iteration);
5584
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387 }
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388
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diff changeset
389 /** Returns min, max and average height from height map */
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390 static void HeightMapGetMinMaxAvg(height_t *min_ptr, height_t *max_ptr, height_t *avg_ptr)
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391 {
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392 height_t h_min, h_max, h_avg, *h;
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diff changeset
393 int64 h_accu = 0;
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frosch <frosch@openttd.org>
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diff changeset
394 h_min = h_max = _height_map.height(0, 0);
5584
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395
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diff changeset
396 /* Get h_min, h_max and accumulate heights into h_accu */
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397 FOR_ALL_TILES_IN_HEIGHT(h) {
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diff changeset
398 if (*h < h_min) h_min = *h;
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399 if (*h > h_max) h_max = *h;
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400 h_accu += *h;
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401 }
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diff changeset
402
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KUDr <KUDr@openttd.org>
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diff changeset
403 /* Get average height */
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diff changeset
404 h_avg = (height_t)(h_accu / (_height_map.size_x * _height_map.size_y));
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diff changeset
405
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diff changeset
406 /* Return required results */
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407 if (min_ptr != NULL) *min_ptr = h_min;
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408 if (max_ptr != NULL) *max_ptr = h_max;
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diff changeset
409 if (avg_ptr != NULL) *avg_ptr = h_avg;
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diff changeset
410 }
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parents:
diff changeset
411
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KUDr <KUDr@openttd.org>
parents:
diff changeset
412 /** Dill histogram and return pointer to its base point - to the count of zero heights */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
413 static int *HeightMapMakeHistogram(height_t h_min, height_t h_max, int *hist_buf)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
414 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
415 int *hist = hist_buf - h_min;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
416 height_t *h;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
417
9613
1fbe30ff6587 (svn r13667) -Documentation: Comment 'tgp.cpp' a bit. Based on patch by CommanderZ.
frosch <frosch@openttd.org>
parents: 9606
diff changeset
418 /* Count the heights and fill the histogram */
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
419 FOR_ALL_TILES_IN_HEIGHT(h) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
420 assert(*h >= h_min);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
421 assert(*h <= h_max);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
422 hist[*h]++;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
423 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
424 return hist;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
425 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
426
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
427 /** Applies sine wave redistribution onto height map */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
428 static void HeightMapSineTransform(height_t h_min, height_t h_max)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
429 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
430 height_t *h;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
431
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
432 FOR_ALL_TILES_IN_HEIGHT(h) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
433 double fheight;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
434
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
435 if (*h < h_min) continue;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
436
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
437 /* Transform height into 0..1 space */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
438 fheight = (double)(*h - h_min) / (double)(h_max - h_min);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
439 /* Apply sine transform depending on landscape type */
9413
512ea64da840 (svn r13325) -Codechange: split the client-side only settings from the settings stored in the savegame so there is no need to have a duplicate copy of it for new games.
rubidium <rubidium@openttd.org>
parents: 9358
diff changeset
440 switch(_settings_game.game_creation.landscape) {
6357
96b1652c6011 (svn r9400) -Codechange: Use some more representative enum names for landscape types.
belugas <belugas@openttd.org>
parents: 6248
diff changeset
441 case LT_TOYLAND:
96b1652c6011 (svn r9400) -Codechange: Use some more representative enum names for landscape types.
belugas <belugas@openttd.org>
parents: 6248
diff changeset
442 case LT_TEMPERATE:
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
443 /* Move and scale 0..1 into -1..+1 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
444 fheight = 2 * fheight - 1;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
445 /* Sine transform */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
446 fheight = sin(fheight * M_PI_2);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
447 /* Transform it back from -1..1 into 0..1 space */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
448 fheight = 0.5 * (fheight + 1);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
449 break;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
450
6357
96b1652c6011 (svn r9400) -Codechange: Use some more representative enum names for landscape types.
belugas <belugas@openttd.org>
parents: 6248
diff changeset
451 case LT_ARCTIC:
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
452 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
453 /* Arctic terrain needs special height distribution.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
454 * Redistribute heights to have more tiles at highest (75%..100%) range */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
455 double sine_upper_limit = 0.75;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
456 double linear_compression = 2;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
457 if (fheight >= sine_upper_limit) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
458 /* Over the limit we do linear compression up */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
459 fheight = 1.0 - (1.0 - fheight) / linear_compression;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
460 } else {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
461 double m = 1.0 - (1.0 - sine_upper_limit) / linear_compression;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
462 /* Get 0..sine_upper_limit into -1..1 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
463 fheight = 2.0 * fheight / sine_upper_limit - 1.0;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
464 /* Sine wave transform */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
465 fheight = sin(fheight * M_PI_2);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
466 /* Get -1..1 back to 0..(1 - (1 - sine_upper_limit) / linear_compression) == 0.0..m */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
467 fheight = 0.5 * (fheight + 1.0) * m;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
468 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
469 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
470 break;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
471
6357
96b1652c6011 (svn r9400) -Codechange: Use some more representative enum names for landscape types.
belugas <belugas@openttd.org>
parents: 6248
diff changeset
472 case LT_TROPIC:
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
473 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
474 /* Desert terrain needs special height distribution.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
475 * Half of tiles should be at lowest (0..25%) heights */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
476 double sine_lower_limit = 0.5;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
477 double linear_compression = 2;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
478 if (fheight <= sine_lower_limit) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
479 /* Under the limit we do linear compression down */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
480 fheight = fheight / linear_compression;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
481 } else {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
482 double m = sine_lower_limit / linear_compression;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
483 /* Get sine_lower_limit..1 into -1..1 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
484 fheight = 2.0 * ((fheight - sine_lower_limit) / (1.0 - sine_lower_limit)) - 1.0;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
485 /* Sine wave transform */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
486 fheight = sin(fheight * M_PI_2);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
487 /* Get -1..1 back to (sine_lower_limit / linear_compression)..1.0 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
488 fheight = 0.5 * ((1.0 - m) * fheight + (1.0 + m));
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
489 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
490 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
491 break;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
492
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
493 default:
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
494 NOT_REACHED();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
495 break;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
496 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
497 /* Transform it back into h_min..h_max space */
5587
c44c070c5032 (svn r8038) -Merge: the cpp branch. Effort of KUDr, Celestar, glx, Smoovius, stillunknown and pv2b.
rubidium <rubidium@openttd.org>
parents: 5584
diff changeset
498 *h = (height_t)(fheight * (h_max - h_min) + h_min);
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
499 if (*h < 0) *h = I2H(0);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
500 if (*h >= h_max) *h = h_max - 1;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
501 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
502 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
503
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
504 /** Adjusts heights in height map to contain required amount of water tiles */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
505 static void HeightMapAdjustWaterLevel(amplitude_t water_percent, height_t h_max_new)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
506 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
507 height_t h_min, h_max, h_avg, h_water_level;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
508 int water_tiles, desired_water_tiles;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
509 height_t *h;
5609
358c07fb3212 (svn r8066) - Codechange: MallocT(), CallocT(), ReallocT() now return the pointer to allocated memory instead of modifying the pointer given as parameter
KUDr <KUDr@openttd.org>
parents: 5601
diff changeset
510 int *hist;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
511
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
512 HeightMapGetMinMaxAvg(&h_min, &h_max, &h_avg);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
513
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
514 /* Allocate histogram buffer and clear its cells */
5609
358c07fb3212 (svn r8066) - Codechange: MallocT(), CallocT(), ReallocT() now return the pointer to allocated memory instead of modifying the pointer given as parameter
KUDr <KUDr@openttd.org>
parents: 5601
diff changeset
515 int *hist_buf = CallocT<int>(h_max - h_min + 1);
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
516 /* Fill histogram */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
517 hist = HeightMapMakeHistogram(h_min, h_max, hist_buf);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
518
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
519 /* How many water tiles do we want? */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
520 desired_water_tiles = (int)(((int64)water_percent) * (int64)(_height_map.size_x * _height_map.size_y)) >> amplitude_decimal_bits;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
521
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
522 /* Raise water_level and accumulate values from histogram until we reach required number of water tiles */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
523 for (h_water_level = h_min, water_tiles = 0; h_water_level < h_max; h_water_level++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
524 water_tiles += hist[h_water_level];
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
525 if (water_tiles >= desired_water_tiles) break;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
526 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
527
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
528 /* We now have the proper water level value.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
529 * Transform the height map into new (normalized) height map:
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
530 * values from range: h_min..h_water_level will become negative so it will be clamped to 0
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
531 * values from range: h_water_level..h_max are transformed into 0..h_max_new
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
532 * , where h_max_new is 4, 8, 12 or 16 depending on terrain type (very flat, flat, hilly, mountains)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
533 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
534 FOR_ALL_TILES_IN_HEIGHT(h) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
535 /* Transform height from range h_water_level..h_max into 0..h_max_new range */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
536 *h = (height_t)(((int)h_max_new) * (*h - h_water_level) / (h_max - h_water_level)) + I2H(1);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
537 /* Make sure all values are in the proper range (0..h_max_new) */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
538 if (*h < 0) *h = I2H(0);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
539 if (*h >= h_max_new) *h = h_max_new - 1;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
540 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
541
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
542 free(hist_buf);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
543 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
544
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
545 static double perlin_coast_noise_2D(const double x, const double y, const double p, const int prime);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
546
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
547 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
548 * This routine sculpts in from the edge a random amount, again a Perlin
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
549 * sequence, to avoid the rigid flat-edge slopes that were present before. The
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
550 * Perlin noise map doesnt know where we are going to slice across, and so we
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
551 * often cut straight through high terrain. the smoothing routine makes it
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
552 * legal, gradually increasing up from the edge to the original terrain height.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
553 * By cutting parts of this away, it gives a far more irregular edge to the
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
554 * map-edge. Sometimes it works beautifully with the existing sea & lakes, and
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
555 * creates a very realistic coastline. Other times the variation is less, and
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
556 * the map-edge shows its cliff-like roots.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
557 *
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
558 * This routine may be extended to randomly sculpt the height of the terrain
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
559 * near the edge. This will have the coast edge at low level (1-3), rising in
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
560 * smoothed steps inland to about 15 tiles in. This should make it look as
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
561 * though the map has been built for the map size, rather than a slice through
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
562 * a larger map.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
563 *
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
564 * Please note that all the small numbers; 53, 101, 167, etc. are small primes
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
565 * to help give the perlin noise a bit more of a random feel.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
566 */
6247
57363e064324 (svn r9050) -Codechange: Foo(void) -> Foo()
rubidium <rubidium@openttd.org>
parents: 5609
diff changeset
567 static void HeightMapCoastLines()
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
568 {
9413
512ea64da840 (svn r13325) -Codechange: split the client-side only settings from the settings stored in the savegame so there is no need to have a duplicate copy of it for new games.
rubidium <rubidium@openttd.org>
parents: 9358
diff changeset
569 int smallest_size = min(_settings_game.game_creation.map_x, _settings_game.game_creation.map_y);
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
570 const int margin = 4;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
571 uint y, x;
5587
c44c070c5032 (svn r8038) -Merge: the cpp branch. Effort of KUDr, Celestar, glx, Smoovius, stillunknown and pv2b.
rubidium <rubidium@openttd.org>
parents: 5584
diff changeset
572 double max_x;
c44c070c5032 (svn r8038) -Merge: the cpp branch. Effort of KUDr, Celestar, glx, Smoovius, stillunknown and pv2b.
rubidium <rubidium@openttd.org>
parents: 5584
diff changeset
573 double max_y;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
574
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
575 /* Lower to sea level */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
576 for (y = 0; y <= _height_map.size_y; y++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
577 /* Top right */
7923
504d4b2ecc6c (svn r11476) -Codechange: rename the function myabs to abs to get rid of an unneeded define
skidd13 <skidd13@openttd.org>
parents: 6422
diff changeset
578 max_x = abs((perlin_coast_noise_2D(_height_map.size_y - y, y, 0.9, 53) + 0.25) * 5 + (perlin_coast_noise_2D(y, y, 0.35, 179) + 1) * 12);
5601
ca6b459bf488 (svn r8055) -Codechange: Replace the different max, dmax, maxu whatever macros by a simple template function max(), that requires two arguments of the same type. While I'm at it change a variable called "max" to "maxval" in a function that calls max().
celestar <celestar@openttd.org>
parents: 5587
diff changeset
579 max_x = max((smallest_size * smallest_size / 16) + max_x, (smallest_size * smallest_size / 16) + margin - max_x);
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
580 if (smallest_size < 8 && max_x > 5) max_x /= 1.5;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
581 for (x = 0; x < max_x; x++) {
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
582 _height_map.height(x, y) = 0;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
583 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
585 /* Bottom left */
7923
504d4b2ecc6c (svn r11476) -Codechange: rename the function myabs to abs to get rid of an unneeded define
skidd13 <skidd13@openttd.org>
parents: 6422
diff changeset
586 max_x = abs((perlin_coast_noise_2D(_height_map.size_y - y, y, 0.85, 101) + 0.3) * 6 + (perlin_coast_noise_2D(y, y, 0.45, 67) + 0.75) * 8);
5601
ca6b459bf488 (svn r8055) -Codechange: Replace the different max, dmax, maxu whatever macros by a simple template function max(), that requires two arguments of the same type. While I'm at it change a variable called "max" to "maxval" in a function that calls max().
celestar <celestar@openttd.org>
parents: 5587
diff changeset
587 max_x = max((smallest_size * smallest_size / 16) + max_x, (smallest_size * smallest_size / 16) + margin - max_x);
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
588 if (smallest_size < 8 && max_x > 5) max_x /= 1.5;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
589 for (x = _height_map.size_x; x > (_height_map.size_x - 1 - max_x); x--) {
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
590 _height_map.height(x, y) = 0;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
591 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
592 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
593
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
594 /* Lower to sea level */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
595 for (x = 0; x <= _height_map.size_x; x++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
596 /* Top left */
7923
504d4b2ecc6c (svn r11476) -Codechange: rename the function myabs to abs to get rid of an unneeded define
skidd13 <skidd13@openttd.org>
parents: 6422
diff changeset
597 max_y = abs((perlin_coast_noise_2D(x, _height_map.size_y / 2, 0.9, 167) + 0.4) * 5 + (perlin_coast_noise_2D(x, _height_map.size_y / 3, 0.4, 211) + 0.7) * 9);
5601
ca6b459bf488 (svn r8055) -Codechange: Replace the different max, dmax, maxu whatever macros by a simple template function max(), that requires two arguments of the same type. While I'm at it change a variable called "max" to "maxval" in a function that calls max().
celestar <celestar@openttd.org>
parents: 5587
diff changeset
598 max_y = max((smallest_size * smallest_size / 16) + max_y, (smallest_size * smallest_size / 16) + margin - max_y);
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
599 if (smallest_size < 8 && max_y > 5) max_y /= 1.5;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
600 for (y = 0; y < max_y; y++) {
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
601 _height_map.height(x, y) = 0;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
602 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
603
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
604
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
605 /* Bottom right */
7923
504d4b2ecc6c (svn r11476) -Codechange: rename the function myabs to abs to get rid of an unneeded define
skidd13 <skidd13@openttd.org>
parents: 6422
diff changeset
606 max_y = abs((perlin_coast_noise_2D(x, _height_map.size_y / 3, 0.85, 71) + 0.25) * 6 + (perlin_coast_noise_2D(x, _height_map.size_y / 3, 0.35, 193) + 0.75) * 12);
5601
ca6b459bf488 (svn r8055) -Codechange: Replace the different max, dmax, maxu whatever macros by a simple template function max(), that requires two arguments of the same type. While I'm at it change a variable called "max" to "maxval" in a function that calls max().
celestar <celestar@openttd.org>
parents: 5587
diff changeset
607 max_y = max((smallest_size * smallest_size / 16) + max_y, (smallest_size * smallest_size / 16) + margin - max_y);
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
608 if (smallest_size < 8 && max_y > 5) max_y /= 1.5;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
609 for (y = _height_map.size_y; y > (_height_map.size_y - 1 - max_y); y--) {
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
610 _height_map.height(x, y) = 0;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
611 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
612 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
613 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
614
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
615 /** Start at given point, move in given direction, find and Smooth coast in that direction */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
616 static void HeightMapSmoothCoastInDirection(int org_x, int org_y, int dir_x, int dir_y)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
617 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
618 const int max_coast_dist_from_edge = 35;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
619 const int max_coast_Smooth_depth = 35;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
620
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
621 int x, y;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
622 int ed; // coast distance from edge
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
623 int depth;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
624
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
625 height_t h_prev = 16;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
626 height_t h;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
627
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
628 assert(IsValidXY(org_x, org_y));
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
629
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
630 /* Search for the coast (first non-water tile) */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
631 for (x = org_x, y = org_y, ed = 0; IsValidXY(x, y) && ed < max_coast_dist_from_edge; x += dir_x, y += dir_y, ed++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
632 /* Coast found? */
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
633 if (_height_map.height(x, y) > 15) break;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
634
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
635 /* Coast found in the neighborhood? */
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
636 if (IsValidXY(x + dir_y, y + dir_x) && _height_map.height(x + dir_y, y + dir_x) > 0) break;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
637
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
638 /* Coast found in the neighborhood on the other side */
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
639 if (IsValidXY(x - dir_y, y - dir_x) && _height_map.height(x - dir_y, y - dir_x) > 0) break;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
640 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
641
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
642 /* Coast found or max_coast_dist_from_edge has been reached.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
643 * Soften the coast slope */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
644 for (depth = 0; IsValidXY(x, y) && depth <= max_coast_Smooth_depth; depth++, x += dir_x, y += dir_y) {
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
645 h = _height_map.height(x, y);
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
646 h = min(h, h_prev + (4 + depth)); // coast softening formula
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
647 _height_map.height(x, y) = h;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
648 h_prev = h;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
649 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
650 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
651
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
652 /** Smooth coasts by modulating height of tiles close to map edges with cosine of distance from edge */
6247
57363e064324 (svn r9050) -Codechange: Foo(void) -> Foo()
rubidium <rubidium@openttd.org>
parents: 5609
diff changeset
653 static void HeightMapSmoothCoasts()
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
654 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
655 uint x, y;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
656 /* First Smooth NW and SE coasts (y close to 0 and y close to size_y) */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
657 for (x = 0; x < _height_map.size_x; x++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
658 HeightMapSmoothCoastInDirection(x, 0, 0, 1);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
659 HeightMapSmoothCoastInDirection(x, _height_map.size_y - 1, 0, -1);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
660 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
661 /* First Smooth NE and SW coasts (x close to 0 and x close to size_x) */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
662 for (y = 0; y < _height_map.size_y; y++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
663 HeightMapSmoothCoastInDirection(0, y, 1, 0);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
664 HeightMapSmoothCoastInDirection(_height_map.size_x - 1, y, -1, 0);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
665 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
666 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
667
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
668 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
669 * This routine provides the essential cleanup necessary before OTTD can
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
670 * display the terrain. When generated, the terrain heights can jump more than
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
671 * one level between tiles. This routine smooths out those differences so that
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
672 * the most it can change is one level. When OTTD can support cliffs, this
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
673 * routine may not be necessary.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
674 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
675 static void HeightMapSmoothSlopes(height_t dh_max)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
676 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
677 int x, y;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
678 for (y = 1; y <= (int)_height_map.size_y; y++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
679 for (x = 1; x <= (int)_height_map.size_x; x++) {
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
680 height_t h_max = min(_height_map.height(x - 1, y), _height_map.height(x, y - 1)) + dh_max;
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
681 if (_height_map.height(x, y) > h_max) _height_map.height(x, y) = h_max;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
682 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
683 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
684 for (y = _height_map.size_y - 1; y >= 0; y--) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
685 for (x = _height_map.size_x - 1; x >= 0; x--) {
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
686 height_t h_max = min(_height_map.height(x + 1, y), _height_map.height(x, y + 1)) + dh_max;
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
687 if (_height_map.height(x, y) > h_max) _height_map.height(x, y) = h_max;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
688 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
689 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
690 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
691
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
692 /** Height map terraform post processing:
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
693 * - water level adjusting
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
694 * - coast Smoothing
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
695 * - slope Smoothing
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
696 * - height histogram redistribution by sine wave transform */
6247
57363e064324 (svn r9050) -Codechange: Foo(void) -> Foo()
rubidium <rubidium@openttd.org>
parents: 5609
diff changeset
697 static void HeightMapNormalize()
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
698 {
9413
512ea64da840 (svn r13325) -Codechange: split the client-side only settings from the settings stored in the savegame so there is no need to have a duplicate copy of it for new games.
rubidium <rubidium@openttd.org>
parents: 9358
diff changeset
699 const amplitude_t water_percent = _water_percent[_settings_game.difficulty.quantity_sea_lakes];
512ea64da840 (svn r13325) -Codechange: split the client-side only settings from the settings stored in the savegame so there is no need to have a duplicate copy of it for new games.
rubidium <rubidium@openttd.org>
parents: 9358
diff changeset
700 const height_t h_max_new = I2H(_max_height[_settings_game.difficulty.terrain_type]);
512ea64da840 (svn r13325) -Codechange: split the client-side only settings from the settings stored in the savegame so there is no need to have a duplicate copy of it for new games.
rubidium <rubidium@openttd.org>
parents: 9358
diff changeset
701 const height_t roughness = 7 + 3 * _settings_game.game_creation.tgen_smoothness;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
702
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
703 HeightMapAdjustWaterLevel(water_percent, h_max_new);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
704
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
705 HeightMapCoastLines();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
706 HeightMapSmoothSlopes(roughness);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
707
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
708 HeightMapSmoothCoasts();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
709 HeightMapSmoothSlopes(roughness);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
710
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
711 HeightMapSineTransform(12, h_max_new);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
712 HeightMapSmoothSlopes(16);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
713 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
714
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
715 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
716 * The Perlin Noise calculation using large primes
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
717 * The initial number is adjusted by two values; the generation_seed, and the
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
718 * passed parameter; prime.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
719 * prime is used to allow the perlin noise generator to create useful random
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
720 * numbers from slightly different series.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
721 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
722 static double int_noise(const long x, const long y, const int prime)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
723 {
9413
512ea64da840 (svn r13325) -Codechange: split the client-side only settings from the settings stored in the savegame so there is no need to have a duplicate copy of it for new games.
rubidium <rubidium@openttd.org>
parents: 9358
diff changeset
724 long n = x + y * prime + _settings_game.game_creation.generation_seed;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
725
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
726 n = (n << 13) ^ n;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
727
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
728 /* Pseudo-random number generator, using several large primes */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
729 return 1.0 - (double)((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff) / 1073741824.0;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
730 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
731
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
732
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
733 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
734 * Hj. Malthaner's routine included 2 different noise smoothing methods.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
735 * We now use the "raw" int_noise one.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
736 * However, it may be useful to move to the other routine in future.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
737 * So it is included too.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
738 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
739 static double smoothed_noise(const int x, const int y, const int prime)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
740 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
741 #if 0
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
742 /* A hilly world (four corner smooth) */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
743 const double sides = int_noise(x - 1, y) + int_noise(x + 1, y) + int_noise(x, y - 1) + int_noise(x, y + 1);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
744 const double center = int_noise(x, y);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
745 return (sides + sides + center * 4) / 8.0;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
746 #endif
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
747
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
748 /* This gives very hilly world */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
749 return int_noise(x, y, prime);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
750 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
751
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
752
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
753 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
754 * This routine determines the interpolated value between a and b
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
755 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
756 static inline double linear_interpolate(const double a, const double b, const double x)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
757 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
758 return a + x * (b - a);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
759 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
760
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
761
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
762 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
763 * This routine returns the smoothed interpolated noise for an x and y, using
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
764 * the values from the surrounding positions.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
765 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
766 static double interpolated_noise(const double x, const double y, const int prime)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
767 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
768 const int integer_X = (int)x;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
769 const int integer_Y = (int)y;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
770
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
771 const double fractional_X = x - (double)integer_X;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
772 const double fractional_Y = y - (double)integer_Y;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
773
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
774 const double v1 = smoothed_noise(integer_X, integer_Y, prime);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
775 const double v2 = smoothed_noise(integer_X + 1, integer_Y, prime);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
776 const double v3 = smoothed_noise(integer_X, integer_Y + 1, prime);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
777 const double v4 = smoothed_noise(integer_X + 1, integer_Y + 1, prime);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
778
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
779 const double i1 = linear_interpolate(v1, v2, fractional_X);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
780 const double i2 = linear_interpolate(v3, v4, fractional_X);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
781
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
782 return linear_interpolate(i1, i2, fractional_Y);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
783 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
784
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
785
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
786 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
787 * This is a similar function to the main perlin noise calculation, but uses
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
788 * the value p passed as a parameter rather than selected from the predefined
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
789 * sequences. as you can guess by its title, i use this to create the indented
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
790 * coastline, which is just another perlin sequence.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
791 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
792 static double perlin_coast_noise_2D(const double x, const double y, const double p, const int prime)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
793 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
794 double total = 0.0;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
795 int i;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
796
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
797 for (i = 0; i < 6; i++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
798 const double frequency = (double)(1 << i);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
799 const double amplitude = pow(p, (double)i);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
800
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
801 total += interpolated_noise((x * frequency) / 64.0, (y * frequency) / 64.0, prime) * amplitude;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
802 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
803
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
804 return total;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
805 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
806
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
807
9613
1fbe30ff6587 (svn r13667) -Documentation: Comment 'tgp.cpp' a bit. Based on patch by CommanderZ.
frosch <frosch@openttd.org>
parents: 9606
diff changeset
808 /** A small helper function to initialize the terrain */
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
809 static void TgenSetTileHeight(TileIndex tile, int height)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
810 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
811 SetTileHeight(tile, height);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
812 MakeClear(tile, CLEAR_GRASS, 3);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
813 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
814
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
815 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
816 * The main new land generator using Perlin noise. Desert landscape is handled
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
817 * different to all others to give a desert valley between two high mountains.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
818 * Clearly if a low height terrain (flat/very flat) is chosen, then the tropic
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
819 * areas wont be high enough, and there will be very little tropic on the map.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
820 * Thus Tropic works best on Hilly or Mountainous.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
821 */
6247
57363e064324 (svn r9050) -Codechange: Foo(void) -> Foo()
rubidium <rubidium@openttd.org>
parents: 5609
diff changeset
822 void GenerateTerrainPerlin()
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
823 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
824 uint x, y;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
825
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
826 if (!AllocHeightMap()) return;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
827 GenerateWorldSetAbortCallback(FreeHeightMap);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
828
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
829 HeightMapGenerate();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
830
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
831 IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
832
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
833 HeightMapNormalize();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
834
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
835 IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
836
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
837 /* Transfer height map into OTTD map */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
838 for (y = 2; y < _height_map.size_y - 2; y++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
839 for (x = 2; x < _height_map.size_x - 2; x++) {
9603
366b04ba8cb9 (svn r13645) -Codechange: Convert a macro into an inlined member function.
frosch <frosch@openttd.org>
parents: 9413
diff changeset
840 int height = H2I(_height_map.height(x, y));
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
841 if (height < 0) height = 0;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
842 if (height > 15) height = 15;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
843 TgenSetTileHeight(TileXY(x, y), height);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
844 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
845 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
846
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
847 IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
848
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
849 /* Recreate void tiles at the border in case they have been affected by generation */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
850 for (y = 0; y < _height_map.size_y - 1; y++) MakeVoid(_height_map.size_x * y + _height_map.size_x - 1);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
851 for (x = 0; x < _height_map.size_x; x++) MakeVoid(_height_map.size_x * y + x);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
852
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
853 FreeHeightMap();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
854 GenerateWorldSetAbortCallback(NULL);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
855 }