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annotate src/heightmap.cpp @ 6247:57363e064324 draft

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(svn r9050) -Codechange: Foo(void) -> Foo()
author rubidium <rubidium@openttd.org>
date Wed, 07 Mar 2007 11:47:46 +0000
parents 4795d2ff4e3a
children b71c1ad2239c
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1 /* $Id$ */
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2
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3 /** @file heightmap.cpp */
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4
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5 #include "stdafx.h"
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6 #include "openttd.h"
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7 #include "variables.h"
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8 #include "functions.h"
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9 #include "heightmap.h"
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10 #include "clear_map.h"
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11 #include "table/strings.h"
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12 #include "void_map.h"
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13 #include "debug.h"
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14 #include "gfx.h"
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15 #include "gui.h"
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16 #include "saveload.h"
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17 #include "bmp.h"
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18 #include "helpers.hpp"
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20 /**
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21 * Convert RGB colors to Grayscale using 29.9% Red, 58.7% Green, 11.4% Blue
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22 * (average luminosity formula) -- Dalestan
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23 * This in fact is the NTSC Color Space -- TrueLight
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24 */
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25 static inline byte RGBToGrayscale(byte red, byte green, byte blue)
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26 {
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27 /* To avoid doubles and stuff, multiple it with a total of 65536 (16bits), then
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28 * divide by it to normalize the value to a byte again. */
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29 return ((red * 19595) + (green * 38470) + (blue * 7471)) / 65536;
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30 }
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33 #ifdef WITH_PNG
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34
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35 #include <png.h>
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36
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37 /**
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38 * The PNG Heightmap loader.
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39 */
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40 static void ReadHeightmapPNGImageData(byte *map, png_structp png_ptr, png_infop info_ptr)
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41 {
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42 uint x, y;
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43 byte gray_palette[256];
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44 png_bytep *row_pointers = NULL;
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45
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46 /* Get palette and convert it to grayscale */
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47 if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) {
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48 int i;
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49 int palette_size;
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50 png_color *palette;
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51 bool all_gray = true;
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52
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53 png_get_PLTE(png_ptr, info_ptr, &palette, &palette_size);
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54 for (i = 0; i < palette_size && (palette_size != 16 || all_gray); i++) {
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55 all_gray &= palette[i].red == palette[i].green && palette[i].red == palette[i].blue;
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56 gray_palette[i] = RGBToGrayscale(palette[i].red, palette[i].green, palette[i].blue);
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57 }
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58
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59 /**
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60 * For a non-gray palette of size 16 we assume that
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61 * the order of the palette determines the height;
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62 * the first entry is the sea (level 0), the second one
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63 * level 1, etc.
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64 */
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65 if (palette_size == 16 && !all_gray) {
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66 for (i = 0; i < palette_size; i++) {
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67 gray_palette[i] = 256 * i / palette_size;
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68 }
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69 }
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70 }
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71
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72 row_pointers = png_get_rows(png_ptr, info_ptr);
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74 /* Read the raw image data and convert in 8-bit grayscale */
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75 for (x = 0; x < info_ptr->width; x++) {
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76 for (y = 0; y < info_ptr->height; y++) {
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77 byte *pixel = &map[y * info_ptr->width + x];
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78 uint x_offset = x * info_ptr->channels;
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79
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80 if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) {
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81 *pixel = gray_palette[row_pointers[y][x_offset]];
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82 } else if (info_ptr->channels == 3) {
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83 *pixel = RGBToGrayscale(row_pointers[y][x_offset + 0],
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84 row_pointers[y][x_offset + 1], row_pointers[y][x_offset + 2]);
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85 } else {
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86 *pixel = row_pointers[y][x_offset];
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87 }
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88 }
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89 }
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90 }
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91
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92 /**
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93 * Reads the heightmap and/or size of the heightmap from a PNG file.
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94 * If map == NULL only the size of the PNG is read, otherwise a map
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95 * with grayscale pixels is allocated and assigned to *map.
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96 */
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97 static bool ReadHeightmapPNG(char *filename, uint *x, uint *y, byte **map)
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98 {
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99 FILE *fp;
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100 png_structp png_ptr = NULL;
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101 png_infop info_ptr = NULL;
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102
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103 fp = fopen(filename, "rb");
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104 if (fp == NULL) {
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105 ShowErrorMessage(STR_PNGMAP_ERR_FILE_NOT_FOUND, STR_PNGMAP_ERROR, 0, 0);
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106 return false;
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107 }
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108
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109 png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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110 if (png_ptr == NULL) {
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111 ShowErrorMessage(STR_PNGMAP_ERR_MISC, STR_PNGMAP_ERROR, 0, 0);
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112 fclose(fp);
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113 return false;
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114 }
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115
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116 info_ptr = png_create_info_struct(png_ptr);
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117 if (info_ptr == NULL || setjmp(png_jmpbuf(png_ptr))) {
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118 ShowErrorMessage(STR_PNGMAP_ERR_MISC, STR_PNGMAP_ERROR, 0, 0);
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119 fclose(fp);
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120 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
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121 return false;
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122 }
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123
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124 png_init_io(png_ptr, fp);
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125
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126 /* Allocate memory and read image, without alpha or 16-bit samples
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127 * (result is either 8-bit indexed/grayscale or 24-bit RGB) */
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128 png_set_packing(png_ptr);
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129 png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_PACKING | PNG_TRANSFORM_STRIP_ALPHA | PNG_TRANSFORM_STRIP_16, NULL);
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130
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131 /* Maps of wrong color-depth are not used.
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132 * (this should have been taken care of by stripping alpha and 16-bit samples on load) */
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133 if ((info_ptr->channels != 1) && (info_ptr->channels != 3) && (info_ptr->bit_depth != 8)) {
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134 ShowErrorMessage(STR_PNGMAP_ERR_IMAGE_TYPE, STR_PNGMAP_ERROR, 0, 0);
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135 fclose(fp);
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136 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
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137 return false;
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138 }
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139
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140 if (map != NULL) {
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141 *map = MallocT<byte>(info_ptr->width * info_ptr->height);
5584
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142
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143 if (*map == NULL) {
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144 ShowErrorMessage(STR_PNGMAP_ERR_MISC, STR_PNGMAP_ERROR, 0, 0);
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145 fclose(fp);
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146 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
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147 return false;
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148 }
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149
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150 ReadHeightmapPNGImageData(*map, png_ptr, info_ptr);
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151 }
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152
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153 *x = info_ptr->width;
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154 *y = info_ptr->height;
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155
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156 fclose(fp);
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157 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
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158 return true;
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159 }
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160
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161 #endif /* WITH_PNG */
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162
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163
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164 /**
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165 * The BMP Heightmap loader.
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166 */
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167 static void ReadHeightmapBMPImageData(byte *map, BmpInfo *info, BmpData *data)
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168 {
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169 uint x, y;
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170 byte gray_palette[256];
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171
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172 if (data->palette != NULL) {
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173 uint i;
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174 bool all_gray = true;
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175
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176 if (info->palette_size != 2) {
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177 for (i = 0; i < info->palette_size && (info->palette_size != 16 || all_gray); i++) {
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178 all_gray &= data->palette[i].r == data->palette[i].g && data->palette[i].r == data->palette[i].b;
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179 gray_palette[i] = RGBToGrayscale(data->palette[i].r, data->palette[i].g, data->palette[i].b);
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180 }
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181
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182 /**
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183 * For a non-gray palette of size 16 we assume that
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184 * the order of the palette determines the height;
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185 * the first entry is the sea (level 0), the second one
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186 * level 1, etc.
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187 */
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188 if (info->palette_size == 16 && !all_gray) {
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189 for (i = 0; i < info->palette_size; i++) {
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190 gray_palette[i] = 256 * i / info->palette_size;
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191 }
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192 }
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193 } else {
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194 /**
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195 * For a palette of size 2 we assume that the order of the palette determines the height;
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196 * the first entry is the sea (level 0), the second one is the land (level 1)
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197 */
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198 gray_palette[0] = 0;
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199 gray_palette[1] = 16;
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200 }
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201 }
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diff changeset
202
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diff changeset
203 /* Read the raw image data and convert in 8-bit grayscale */
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diff changeset
204 for (y = 0; y < info->height; y++) {
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diff changeset
205 byte *pixel = &map[y * info->width];
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diff changeset
206 byte *bitmap = &data->bitmap[y * info->width * (info->bpp == 24 ? 3 : 1)];
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diff changeset
207
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diff changeset
208 for (x = 0; x < info->width; x++) {
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diff changeset
209 if (info->bpp != 24) {
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diff changeset
210 *pixel++ = gray_palette[*bitmap++];
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diff changeset
211 } else {
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diff changeset
212 *pixel++ = RGBToGrayscale(*bitmap, *(bitmap + 1), *(bitmap + 2));
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diff changeset
213 bitmap += 3;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
214 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
215 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
216 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
217 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
218
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
219 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
220 * Reads the heightmap and/or size of the heightmap from a BMP file.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
221 * If map == NULL only the size of the BMP is read, otherwise a map
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
222 * with grayscale pixels is allocated and assigned to *map.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
223 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
224 static bool ReadHeightmapBMP(char *filename, uint *x, uint *y, byte **map)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
225 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
226 FILE *f;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
227 BmpInfo info;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
228 BmpData data;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
229 BmpBuffer buffer;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
230
6179
e3e61b92574b (svn r8950) -Cleanup: doxygen changes. Mostly @files missing tags and a few comments style.
belugas <belugas@openttd.org>
parents: 5618
diff changeset
231 /* Init BmpData */
5613
259535bb5019 (svn r8070) -Fix r5815: missing initialisation could cause crash when loading 24bpp BMP heightmap
glx <glx@openttd.org>
parents: 5609
diff changeset
232 memset(&data, 0, sizeof(data));
259535bb5019 (svn r8070) -Fix r5815: missing initialisation could cause crash when loading 24bpp BMP heightmap
glx <glx@openttd.org>
parents: 5609
diff changeset
233
5584
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KUDr <KUDr@openttd.org>
parents:
diff changeset
234 f = fopen(filename, "rb");
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
235 if (f == NULL) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
236 ShowErrorMessage(STR_PNGMAP_ERR_FILE_NOT_FOUND, STR_BMPMAP_ERROR, 0, 0);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
237 return false;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
238 }
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KUDr <KUDr@openttd.org>
parents:
diff changeset
239
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KUDr <KUDr@openttd.org>
parents:
diff changeset
240 BmpInitializeBuffer(&buffer, f);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
241
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
242 if (!BmpReadHeader(&buffer, &info, &data)) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
243 ShowErrorMessage(STR_BMPMAP_ERR_IMAGE_TYPE, STR_BMPMAP_ERROR, 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
244 fclose(f);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
245 BmpDestroyData(&data);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
246 return false;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
247 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
248
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
249 if (map != NULL) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
250 if (!BmpReadBitmap(&buffer, &info, &data)) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
251 ShowErrorMessage(STR_BMPMAP_ERR_IMAGE_TYPE, STR_BMPMAP_ERROR, 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
252 fclose(f);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
253 BmpDestroyData(&data);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
254 return false;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
255 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
256
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: 5593
diff changeset
257 *map = MallocT<byte>(info.width * info.height);
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
258 if (*map == NULL) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
259 ShowErrorMessage(STR_PNGMAP_ERR_MISC, STR_BMPMAP_ERROR, 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
260 fclose(f);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
261 BmpDestroyData(&data);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
262 return false;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
263 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
264
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
265 ReadHeightmapBMPImageData(*map, &info, &data);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
266
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
267 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
268
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
269 BmpDestroyData(&data);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
270
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
271 *x = info.width;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
272 *y = info.height;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
273
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
274 fclose(f);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
275 return true;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
276 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
277
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
278 static void GrayscaleToMapHeights(uint img_width, uint img_height, byte *map)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
279 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
280 /* Defines the detail of the aspect ratio (to avoid doubles) */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
281 const uint num_div = 16384;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
282
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
283 uint width, height;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
284 uint row, col;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
285 uint row_pad = 0, col_pad = 0;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
286 uint img_scale;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
287 uint img_row, img_col;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
288 TileIndex tile;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
289
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
290 /* Get map size and calculate scale and padding values */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
291 switch (_patches.heightmap_rotation) {
5618
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
292 default: NOT_REACHED();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
293 case HM_COUNTER_CLOCKWISE:
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
294 width = MapSizeX();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
295 height = MapSizeY();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
296 break;
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
297 case HM_CLOCKWISE:
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
298 width = MapSizeY();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
299 height = MapSizeX();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
300 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
301 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
302
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
303 if ((img_width * num_div) / img_height > ((width * num_div) / height)) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
304 /* Image is wider than map - center vertically */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
305 img_scale = (width * num_div) / img_width;
5616
78c85a8c5488 (svn r8074) -Fix (FS#537, r7555, r5749): revert r7555 because it was really wrong and fix the off-by-one error due to truncation that was supposedly fixed by r7555.
rubidium <rubidium@openttd.org>
parents: 5613
diff changeset
306 row_pad = (1 + height - ((img_height * img_scale) / num_div)) / 2;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
307 } else {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
308 /* Image is taller than map - center horizontally */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
309 img_scale = (height * num_div) / img_height;
5616
78c85a8c5488 (svn r8074) -Fix (FS#537, r7555, r5749): revert r7555 because it was really wrong and fix the off-by-one error due to truncation that was supposedly fixed by r7555.
rubidium <rubidium@openttd.org>
parents: 5613
diff changeset
310 col_pad = (1 + width - ((img_width * img_scale) / num_div)) / 2;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
311 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
312
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
313 /* Form the landscape */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
314 for (row = 0; row < height - 1; row++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
315 for (col = 0; col < width - 1; col++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
316 switch (_patches.heightmap_rotation) {
5618
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
317 default: NOT_REACHED();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
318 case HM_COUNTER_CLOCKWISE: tile = TileXY(col, row); break;
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
319 case HM_CLOCKWISE: tile = TileXY(row, col); 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
320 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
321
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
322 /* Check if current tile is within the 1-pixel map edge or padding regions */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
323 if ((DistanceFromEdge(tile) <= 1) ||
5616
78c85a8c5488 (svn r8074) -Fix (FS#537, r7555, r5749): revert r7555 because it was really wrong and fix the off-by-one error due to truncation that was supposedly fixed by r7555.
rubidium <rubidium@openttd.org>
parents: 5613
diff changeset
324 (row < row_pad) || (row >= (height - row_pad - 1)) ||
78c85a8c5488 (svn r8074) -Fix (FS#537, r7555, r5749): revert r7555 because it was really wrong and fix the off-by-one error due to truncation that was supposedly fixed by r7555.
rubidium <rubidium@openttd.org>
parents: 5613
diff changeset
325 (col < col_pad) || (col >= (width - col_pad - 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
326 SetTileHeight(tile, 0);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
327 } else {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
328 /* Use nearest neighbor resizing to scale map data.
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KUDr <KUDr@openttd.org>
parents:
diff changeset
329 * We rotate the map 45 degrees (counter)clockwise */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
330 img_row = (((row - row_pad) * num_div) / img_scale);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
331 switch (_patches.heightmap_rotation) {
5618
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
332 default: NOT_REACHED();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
333 case HM_COUNTER_CLOCKWISE:
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
334 img_col = (((width - 1 - col - col_pad) * num_div) / img_scale);
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
335 break;
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
336 case HM_CLOCKWISE:
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
337 img_col = (((col - col_pad) * num_div) / img_scale);
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
338 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
339 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
340
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
341 assert(img_row < img_height);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
342 assert(img_col < img_width);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
343
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
344 /* Color scales from 0 to 255, OpenTTD height scales from 0 to 15 */
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KUDr <KUDr@openttd.org>
parents:
diff changeset
345 SetTileHeight(tile, map[img_row * img_width + img_col] / 16);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
346 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
347 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
348 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
349 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
350 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
351
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
352 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
353 * This function takes care of the fact that land in OpenTTD can never differ
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
354 * more than 1 in height
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
355 */
6247
57363e064324 (svn r9050) -Codechange: Foo(void) -> Foo()
rubidium <rubidium@openttd.org>
parents: 6222
diff changeset
356 static void FixSlopes()
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
357 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
358 uint width, height;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
359 uint row, col;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
360 byte current_tile;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
361
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
362 /* Adjust height difference to maximum one horizontal/vertical change. */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
363 width = MapSizeX();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
364 height = MapSizeY();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
365
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
366 /* Top and left edge */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
367 for (row = 1; row < height - 2; row++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
368 for (col = 1; col < width - 2; col++) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
369 /* Find lowest tile; either the top or left one */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
370 current_tile = TileHeight(TileXY(col - 1, row)); // top edge
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
371 if (TileHeight(TileXY(col, row - 1)) < current_tile) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
372 current_tile = TileHeight(TileXY(col, row - 1)); // left edge
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
373 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
374
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
375 /* Does the height differ more than one? */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
376 if (TileHeight(TileXY(col, row)) >= (uint)current_tile + 2) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
377 /* Then change the height to be no more than one */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
378 SetTileHeight(TileXY(col, row), current_tile + 1);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
379 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
380 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
381 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
382
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
383 /* Bottom and right edge */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
384 for (row = height - 2; row > 0; row--) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
385 for (col = width - 2; col > 0; col--) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
386 /* Find lowest tile; either the bottom and right one */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
387 current_tile = TileHeight(TileXY(col + 1, row)); // bottom edge
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
388 if (TileHeight(TileXY(col, row + 1)) < current_tile) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
389 current_tile = TileHeight(TileXY(col, row + 1)); // right edge
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
390 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
391
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
392 /* Does the height differ more than one? */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
393 if (TileHeight(TileXY(col, row)) >= (uint)current_tile + 2) {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
394 /* Then change the height to be no more than one */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
395 SetTileHeight(TileXY(col, row), current_tile + 1);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
396 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
397 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
398 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
399 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
400
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
401 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
402 * Reads the heightmap with the correct file reader
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
403 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
404 static bool ReadHeightMap(char *filename, uint *x, uint *y, byte **map)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
405 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
406 switch (_file_to_saveload.mode) {
5618
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
407 default: NOT_REACHED();
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
408 #ifdef WITH_PNG
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
409 case SL_PNG:
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
410 return ReadHeightmapPNG(filename, x, y, map);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
411 #endif /* WITH_PNG */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
412 case SL_BMP:
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
413 return ReadHeightmapBMP(filename, x, y, map);
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 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
416
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
417 bool GetHeightmapDimensions(char *filename, uint *x, uint *y)
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
418 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
419 return ReadHeightMap(filename, x, y, NULL);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
420 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
421
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
422 void LoadHeightmap(char *filename)
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 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
425 byte *map = NULL;
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 if (!ReadHeightMap(filename, &x, &y, &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 free(map);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
429 return;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
430 }
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 GrayscaleToMapHeights(x, y, map);
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433 free(map);
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434
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435 FixSlopes();
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KUDr <KUDr@openttd.org>
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436 MarkWholeScreenDirty();
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KUDr <KUDr@openttd.org>
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437 }
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438
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KUDr <KUDr@openttd.org>
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439 void FlatEmptyWorld(byte tile_height)
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KUDr <KUDr@openttd.org>
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440 {
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KUDr <KUDr@openttd.org>
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441 uint width, height;
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KUDr <KUDr@openttd.org>
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442 uint row, col;
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KUDr <KUDr@openttd.org>
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443
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444 width = MapSizeX();
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KUDr <KUDr@openttd.org>
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445 height = MapSizeY();
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KUDr <KUDr@openttd.org>
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446
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KUDr <KUDr@openttd.org>
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447 for (row = 2; row < height - 2; row++) {
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448 for (col = 2; col < width - 2; col++) {
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KUDr <KUDr@openttd.org>
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449 SetTileHeight(TileXY(col, row), tile_height);
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KUDr <KUDr@openttd.org>
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450 }
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451 }
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KUDr <KUDr@openttd.org>
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452
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KUDr <KUDr@openttd.org>
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453 FixSlopes();
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KUDr <KUDr@openttd.org>
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454 MarkWholeScreenDirty();
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KUDr <KUDr@openttd.org>
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455 }