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annotate src/heightmap.cpp @ 11335:0e8b18184e66 draft

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(svn r15685) -Fix [FS#2720]: do not crash when someone substitutes the "map generation" sprites with garbage.
author rubidium <rubidium@openttd.org>
date Thu, 12 Mar 2009 14:21:18 +0000
parents 5a50ba45cf24
children e41943276802
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1 /* $Id$ */
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2
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3 /** @file heightmap.cpp Creating of maps from heightmaps. */
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4
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5 #include "stdafx.h"
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6 #include "heightmap.h"
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7 #include "clear_map.h"
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8 #include "void_map.h"
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9 #include "gui.h"
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10 #include "saveload/saveload.h"
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11 #include "bmp.h"
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12 #include "gfx_func.h"
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13 #include "fios.h"
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14 #include "settings_type.h"
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15 #include "fileio_func.h"
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16
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17 #include "table/strings.h"
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19 /**
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20 * Convert RGB colours to Grayscale using 29.9% Red, 58.7% Green, 11.4% Blue
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21 * (average luminosity formula) -- Dalestan
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22 * This in fact is the NTSC Colour Space -- TrueLight
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23 */
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24 static inline byte RGBToGrayscale(byte red, byte green, byte blue)
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25 {
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26 /* To avoid doubles and stuff, multiple it with a total of 65536 (16bits), then
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27 * divide by it to normalize the value to a byte again. */
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28 return ((red * 19595) + (green * 38470) + (blue * 7471)) / 65536;
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29 }
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32 #ifdef WITH_PNG
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33
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34 #include <png.h>
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35
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36 /**
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37 * The PNG Heightmap loader.
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38 */
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39 static void ReadHeightmapPNGImageData(byte *map, png_structp png_ptr, png_infop info_ptr)
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40 {
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41 uint x, y;
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42 byte gray_palette[256];
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43 png_bytep *row_pointers = NULL;
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44
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45 /* Get palette and convert it to grayscale */
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46 if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) {
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47 int i;
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48 int palette_size;
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49 png_color *palette;
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50 bool all_gray = true;
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51
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52 png_get_PLTE(png_ptr, info_ptr, &palette, &palette_size);
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53 for (i = 0; i < palette_size && (palette_size != 16 || all_gray); i++) {
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54 all_gray &= palette[i].red == palette[i].green && palette[i].red == palette[i].blue;
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55 gray_palette[i] = RGBToGrayscale(palette[i].red, palette[i].green, palette[i].blue);
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56 }
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57
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58 /**
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59 * For a non-gray palette of size 16 we assume that
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60 * the order of the palette determines the height;
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61 * the first entry is the sea (level 0), the second one
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62 * level 1, etc.
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63 */
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64 if (palette_size == 16 && !all_gray) {
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65 for (i = 0; i < palette_size; i++) {
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66 gray_palette[i] = 256 * i / palette_size;
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67 }
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68 }
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69 }
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70
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71 row_pointers = png_get_rows(png_ptr, info_ptr);
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72
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73 /* Read the raw image data and convert in 8-bit grayscale */
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74 for (x = 0; x < info_ptr->width; x++) {
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75 for (y = 0; y < info_ptr->height; y++) {
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76 byte *pixel = &map[y * info_ptr->width + x];
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77 uint x_offset = x * info_ptr->channels;
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78
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79 if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) {
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80 *pixel = gray_palette[row_pointers[y][x_offset]];
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81 } else if (info_ptr->channels == 3) {
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82 *pixel = RGBToGrayscale(row_pointers[y][x_offset + 0],
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83 row_pointers[y][x_offset + 1], row_pointers[y][x_offset + 2]);
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84 } else {
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85 *pixel = row_pointers[y][x_offset];
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86 }
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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 * Reads the heightmap and/or size of the heightmap from a PNG file.
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93 * If map == NULL only the size of the PNG is read, otherwise a map
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94 * with grayscale pixels is allocated and assigned to *map.
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95 */
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96 static bool ReadHeightmapPNG(char *filename, uint *x, uint *y, byte **map)
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97 {
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98 FILE *fp;
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99 png_structp png_ptr = NULL;
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100 png_infop info_ptr = NULL;
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101
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102 fp = FioFOpenFile(filename, "rb");
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103 if (fp == NULL) {
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104 ShowErrorMessage(STR_PNGMAP_ERR_FILE_NOT_FOUND, STR_PNGMAP_ERROR, 0, 0);
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105 return false;
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106 }
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107
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108 png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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109 if (png_ptr == NULL) {
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110 ShowErrorMessage(STR_PNGMAP_ERR_MISC, STR_PNGMAP_ERROR, 0, 0);
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111 fclose(fp);
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112 return false;
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113 }
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114
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115 info_ptr = png_create_info_struct(png_ptr);
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116 if (info_ptr == NULL || setjmp(png_jmpbuf(png_ptr))) {
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117 ShowErrorMessage(STR_PNGMAP_ERR_MISC, STR_PNGMAP_ERROR, 0, 0);
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118 fclose(fp);
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119 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
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120 return false;
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121 }
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122
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123 png_init_io(png_ptr, fp);
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124
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125 /* Allocate memory and read image, without alpha or 16-bit samples
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126 * (result is either 8-bit indexed/grayscale or 24-bit RGB) */
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127 png_set_packing(png_ptr);
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128 png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_PACKING | PNG_TRANSFORM_STRIP_ALPHA | PNG_TRANSFORM_STRIP_16, NULL);
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129
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130 /* Maps of wrong colour-depth are not used.
5584
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131 * (this should have been taken care of by stripping alpha and 16-bit samples on load) */
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132 if ((info_ptr->channels != 1) && (info_ptr->channels != 3) && (info_ptr->bit_depth != 8)) {
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133 ShowErrorMessage(STR_PNGMAP_ERR_IMAGE_TYPE, STR_PNGMAP_ERROR, 0, 0);
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134 fclose(fp);
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135 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
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136 return false;
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137 }
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138
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139 if (map != NULL) {
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140 *map = MallocT<byte>(info_ptr->width * info_ptr->height);
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141 ReadHeightmapPNGImageData(*map, png_ptr, info_ptr);
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142 }
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143
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144 *x = info_ptr->width;
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145 *y = info_ptr->height;
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146
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147 fclose(fp);
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148 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
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149 return true;
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150 }
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151
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152 #endif /* WITH_PNG */
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153
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154
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155 /**
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156 * The BMP Heightmap loader.
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157 */
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158 static void ReadHeightmapBMPImageData(byte *map, BmpInfo *info, BmpData *data)
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159 {
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160 uint x, y;
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161 byte gray_palette[256];
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162
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163 if (data->palette != NULL) {
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164 uint i;
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165 bool all_gray = true;
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166
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167 if (info->palette_size != 2) {
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168 for (i = 0; i < info->palette_size && (info->palette_size != 16 || all_gray); i++) {
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169 all_gray &= data->palette[i].r == data->palette[i].g && data->palette[i].r == data->palette[i].b;
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170 gray_palette[i] = RGBToGrayscale(data->palette[i].r, data->palette[i].g, data->palette[i].b);
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171 }
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172
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173 /**
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174 * For a non-gray palette of size 16 we assume that
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175 * the order of the palette determines the height;
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176 * the first entry is the sea (level 0), the second one
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177 * level 1, etc.
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178 */
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179 if (info->palette_size == 16 && !all_gray) {
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180 for (i = 0; i < info->palette_size; i++) {
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181 gray_palette[i] = 256 * i / info->palette_size;
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182 }
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183 }
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184 } else {
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185 /**
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diff changeset
186 * For a palette of size 2 we assume that the order of the palette determines the height;
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187 * the first entry is the sea (level 0), the second one is the land (level 1)
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diff changeset
188 */
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189 gray_palette[0] = 0;
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190 gray_palette[1] = 16;
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191 }
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192 }
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193
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194 /* Read the raw image data and convert in 8-bit grayscale */
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195 for (y = 0; y < info->height; y++) {
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diff changeset
196 byte *pixel = &map[y * info->width];
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197 byte *bitmap = &data->bitmap[y * info->width * (info->bpp == 24 ? 3 : 1)];
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198
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199 for (x = 0; x < info->width; x++) {
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diff changeset
200 if (info->bpp != 24) {
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201 *pixel++ = gray_palette[*bitmap++];
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diff changeset
202 } else {
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diff changeset
203 *pixel++ = RGBToGrayscale(*bitmap, *(bitmap + 1), *(bitmap + 2));
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diff changeset
204 bitmap += 3;
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205 }
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diff changeset
206 }
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diff changeset
207 }
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208 }
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209
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210 /**
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diff changeset
211 * Reads the heightmap and/or size of the heightmap from a BMP file.
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212 * If map == NULL only the size of the BMP is read, otherwise a map
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213 * with grayscale pixels is allocated and assigned to *map.
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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 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
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 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
218 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
219 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
220 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
221
6179
e3e61b92574b (svn r8950) -Cleanup: doxygen changes. Mostly @files missing tags and a few comments style.
belugas <belugas@openttd.org>
parents: 5618
diff changeset
222 /* 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
223 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
224
11261
5a50ba45cf24 (svn r15610) -Change: allow loading of heightmaps and savegames (any form) that are in .tar files
rubidium <rubidium@openttd.org>
parents: 11215
diff changeset
225 f = FioFOpenFile(filename, "rb");
5584
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KUDr <KUDr@openttd.org>
parents:
diff changeset
226 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
227 ShowErrorMessage(STR_PNGMAP_ERR_FILE_NOT_FOUND, STR_BMPMAP_ERROR, 0, 0);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
228 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
229 }
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KUDr <KUDr@openttd.org>
parents:
diff changeset
230
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
231 BmpInitializeBuffer(&buffer, f);
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
232
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
233 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
234 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
235 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
236 BmpDestroyData(&data);
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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
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
240 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
241 if (!BmpReadBitmap(&buffer, &info, &data)) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
242 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
243 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
244 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
245 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
246 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
247
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
248 *map = MallocT<byte>(info.width * info.height);
5584
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KUDr <KUDr@openttd.org>
parents:
diff changeset
249 ReadHeightmapBMPImageData(*map, &info, &data);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
250 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
251
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
252 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
253
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
254 *x = info.width;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
255 *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
256
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
257 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
258 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
259 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
260
6540
b71c1ad2239c (svn r9729) -Documentation: add some documentation in various places
rubidium <rubidium@openttd.org>
parents: 6247
diff changeset
261 /**
b71c1ad2239c (svn r9729) -Documentation: add some documentation in various places
rubidium <rubidium@openttd.org>
parents: 6247
diff changeset
262 * Converts a given grayscale map to something that fits in OTTD map system
b71c1ad2239c (svn r9729) -Documentation: add some documentation in various places
rubidium <rubidium@openttd.org>
parents: 6247
diff changeset
263 * and create a map of that data.
b71c1ad2239c (svn r9729) -Documentation: add some documentation in various places
rubidium <rubidium@openttd.org>
parents: 6247
diff changeset
264 * @param img_width the with of the image in pixels/tiles
b71c1ad2239c (svn r9729) -Documentation: add some documentation in various places
rubidium <rubidium@openttd.org>
parents: 6247
diff changeset
265 * @param img_height the height of the image in pixels/tiles
b71c1ad2239c (svn r9729) -Documentation: add some documentation in various places
rubidium <rubidium@openttd.org>
parents: 6247
diff changeset
266 * @param map the input map
b71c1ad2239c (svn r9729) -Documentation: add some documentation in various places
rubidium <rubidium@openttd.org>
parents: 6247
diff changeset
267 */
5584
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KUDr <KUDr@openttd.org>
parents:
diff changeset
268 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
269 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
270 /* Defines the detail of the aspect ratio (to avoid doubles) */
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KUDr <KUDr@openttd.org>
parents:
diff changeset
271 const uint num_div = 16384;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
272
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
273 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
274 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
275 uint row_pad = 0, col_pad = 0;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
276 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
277 uint img_row, img_col;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
278 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
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 /* Get map size and calculate scale and padding values */
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: 9354
diff changeset
281 switch (_settings_game.game_creation.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
282 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
283 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
284 width = MapSizeX();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
285 height = MapSizeY();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
286 break;
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
287 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
288 width = MapSizeY();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
289 height = MapSizeX();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
290 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
291 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
292
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
293 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
294 /* 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
295 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
296 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
297 } else {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
298 /* 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
299 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
300 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
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
10855
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
303 if (_settings_game.construction.freeform_edges) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
304 for (uint x = 0; x < MapSizeX(); x++) MakeVoid(TileXY(x, 0));
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
305 for (uint y = 0; y < MapSizeY(); y++) MakeVoid(TileXY(0, y));
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
306 }
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
307
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
308 /* Form the landscape */
10855
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
309 for (row = 0; row < height; row++) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
310 for (col = 0; col < width; col++) {
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: 9354
diff changeset
311 switch (_settings_game.game_creation.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
312 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
313 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
314 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
315 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
316
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
317 /* Check if current tile is within the 1-pixel map edge or padding regions */
10855
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
318 if ((!_settings_game.construction.freeform_edges && DistanceFromEdge(tile) <= 1) ||
10992
bc60c659a15d (svn r15332) -Fix (r15190): terrain generated from heightmaps always was at sea level at both southern borders
smatz <smatz@openttd.org>
parents: 10960
diff changeset
319 (row < row_pad) || (row >= (height - row_pad - (_settings_game.construction.freeform_edges ? 0 : 1))) ||
bc60c659a15d (svn r15332) -Fix (r15190): terrain generated from heightmaps always was at sea level at both southern borders
smatz <smatz@openttd.org>
parents: 10960
diff changeset
320 (col < col_pad) || (col >= (width - col_pad - (_settings_game.construction.freeform_edges ? 0 : 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
321 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
322 } else {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
323 /* Use nearest neighbor resizing to scale map data.
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
324 * 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
325 img_row = (((row - row_pad) * num_div) / img_scale);
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: 9354
diff changeset
326 switch (_settings_game.game_creation.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
327 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
328 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
329 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
330 break;
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
331 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
332 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
333 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
334 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
335
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
336 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
337 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
338
11085
8da1855e9f14 (svn r15428) -Codechange: consistently use colour instead of having both color and colour.
rubidium <rubidium@openttd.org>
parents: 10992
diff changeset
339 /* Colour scales from 0 to 255, OpenTTD height scales from 0 to 15 */
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
340 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
341 }
10855
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
342 /* Only clear the tiles within the map area. */
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
343 if (TileX(tile) != MapMaxX() && TileY(tile) != MapMaxY() &&
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
344 (!_settings_game.construction.freeform_edges || (TileX(tile) != 0 && TileY(tile) != 0))) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
345 MakeClear(tile, CLEAR_GRASS, 3);
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
346 }
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
347 }
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 * 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
353 * 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
354 */
11335
0e8b18184e66 (svn r15685) -Fix [FS#2720]: do not crash when someone substitutes the "map generation" sprites with garbage.
rubidium <rubidium@openttd.org>
parents: 11261
diff changeset
355 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
356 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
357 uint width, height;
10855
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
358 int row, col;
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
359 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
360
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
361 /* 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
362 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
363 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
364
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
365 /* Top and left edge */
10855
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
366 for (row = 0; (uint)row < height; row++) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
367 for (col = 0; (uint)col < width; col++) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
368 current_tile = MAX_TILE_HEIGHT;
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
369 if (col != 0) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
370 /* Find lowest tile; either the top or left one */
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
371 current_tile = TileHeight(TileXY(col - 1, row)); // top edge
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
372 }
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
373 if (row != 0) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
374 if (TileHeight(TileXY(col, row - 1)) < current_tile) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
375 current_tile = TileHeight(TileXY(col, row - 1)); // left edge
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
376 }
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
377 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
378
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
379 /* 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
380 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
381 /* 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
382 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
383 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
384 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
385 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
386
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
387 /* Bottom and right edge */
10855
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
388 for (row = height - 1; row >= 0; row--) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
389 for (col = width - 1; col >= 0; col--) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
390 current_tile = MAX_TILE_HEIGHT;
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
391 if ((uint)col != width - 1) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
392 /* Find lowest tile; either the bottom and right one */
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
393 current_tile = TileHeight(TileXY(col + 1, row)); // bottom edge
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
394 }
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
395
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
396 if ((uint)row != height - 1) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
397 if (TileHeight(TileXY(col, row + 1)) < current_tile) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
398 current_tile = TileHeight(TileXY(col, row + 1)); // right edge
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
399 }
5584
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 /* 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
403 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
404 /* 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
405 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
406 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
407 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
408 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
409 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
410
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
411 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
412 * 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
413 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
414 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
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 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
417 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
418 #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
419 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
420 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
421 #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
422 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
423 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
424 }
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 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
428 {
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 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
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 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
433 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
434 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
435 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
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 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
438 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
439 return;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
440 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
441
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
442 GrayscaleToMapHeights(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
443 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
444
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
445 FixSlopes();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
446 MarkWholeScreenDirty();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
447 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
448
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
449 void FlatEmptyWorld(byte 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
450 {
10855
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
451 int edge_distance = _settings_game.construction.freeform_edges ? 0 : 2;
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
452 for (uint row = edge_distance; row < MapSizeY() - edge_distance; row++) {
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
453 for (uint col = edge_distance; col < MapSizeX() - edge_distance; col++) {
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
454 SetTileHeight(TileXY(col, row), 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
455 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
456 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
457
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
458 FixSlopes();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
459 MarkWholeScreenDirty();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
460 }