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annotate src/heightmap.cpp @ 14205:c0ea5d87de2e draft

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(svn r18756) -Codechange: direct accesses to png_*_struct members are deprecated
author glx <glx@openttd.org>
date Fri, 08 Jan 2010 03:17:12 +0000
parents ddfb6a69b9c3
children b7a22979b84e
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1 /* $Id$ */
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2
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3 /*
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4 * This file is part of OpenTTD.
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5 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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6 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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7 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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8 */
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9
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10 /** @file heightmap.cpp Creating of maps from heightmaps. */
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11
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12 #include "stdafx.h"
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13 #include "heightmap.h"
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14 #include "clear_map.h"
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15 #include "void_map.h"
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16 #include "gui.h"
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17 #include "saveload/saveload.h"
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18 #include "bmp.h"
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19 #include "gfx_func.h"
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20 #include "fios.h"
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21 #include "fileio_func.h"
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22
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23 #include "table/strings.h"
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24
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25 /**
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26 * Convert RGB colours to Grayscale using 29.9% Red, 58.7% Green, 11.4% Blue
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27 * (average luminosity formula) -- Dalestan
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28 * This in fact is the NTSC Colour Space -- TrueLight
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29 */
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30 static inline byte RGBToGrayscale(byte red, byte green, byte blue)
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31 {
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32 /* To avoid doubles and stuff, multiple it with a total of 65536 (16bits), then
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33 * divide by it to normalize the value to a byte again. */
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34 return ((red * 19595) + (green * 38470) + (blue * 7471)) / 65536;
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35 }
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36
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38 #ifdef WITH_PNG
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39
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40 #include <png.h>
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41
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42 /**
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43 * The PNG Heightmap loader.
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44 */
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45 static void ReadHeightmapPNGImageData(byte *map, png_structp png_ptr, png_infop info_ptr)
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46 {
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47 uint x, y;
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48 byte gray_palette[256];
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49 png_bytep *row_pointers = NULL;
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50
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51 /* Get palette and convert it to grayscale */
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52 if (png_get_color_type(png_ptr, info_ptr) == PNG_COLOR_TYPE_PALETTE) {
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53 int i;
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54 int palette_size;
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55 png_color *palette;
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56 bool all_gray = true;
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57
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58 png_get_PLTE(png_ptr, info_ptr, &palette, &palette_size);
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59 for (i = 0; i < palette_size && (palette_size != 16 || all_gray); i++) {
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60 all_gray &= palette[i].red == palette[i].green && palette[i].red == palette[i].blue;
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61 gray_palette[i] = RGBToGrayscale(palette[i].red, palette[i].green, palette[i].blue);
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62 }
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63
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64 /**
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65 * For a non-gray palette of size 16 we assume that
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66 * the order of the palette determines the height;
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67 * the first entry is the sea (level 0), the second one
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68 * level 1, etc.
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69 */
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70 if (palette_size == 16 && !all_gray) {
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71 for (i = 0; i < palette_size; i++) {
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72 gray_palette[i] = 256 * i / palette_size;
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73 }
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74 }
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75 }
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76
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77 row_pointers = png_get_rows(png_ptr, info_ptr);
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78
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79 /* Read the raw image data and convert in 8-bit grayscale */
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80 for (x = 0; x < png_get_image_width(png_ptr, info_ptr); x++) {
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81 for (y = 0; y < png_get_image_height(png_ptr, info_ptr); y++) {
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82 byte *pixel = &map[y * png_get_image_width(png_ptr, info_ptr) + x];
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83 uint x_offset = x * png_get_channels(png_ptr, info_ptr);
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84
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85 if (png_get_color_type(png_ptr, info_ptr) == PNG_COLOR_TYPE_PALETTE) {
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86 *pixel = gray_palette[row_pointers[y][x_offset]];
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87 } else if (png_get_channels(png_ptr, info_ptr) == 3) {
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88 *pixel = RGBToGrayscale(row_pointers[y][x_offset + 0],
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89 row_pointers[y][x_offset + 1], row_pointers[y][x_offset + 2]);
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90 } else {
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91 *pixel = row_pointers[y][x_offset];
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92 }
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93 }
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94 }
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95 }
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96
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97 /**
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98 * Reads the heightmap and/or size of the heightmap from a PNG file.
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99 * If map == NULL only the size of the PNG is read, otherwise a map
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100 * with grayscale pixels is allocated and assigned to *map.
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101 */
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102 static bool ReadHeightmapPNG(char *filename, uint *x, uint *y, byte **map)
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103 {
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104 FILE *fp;
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105 png_structp png_ptr = NULL;
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parents:
diff changeset
106 png_infop info_ptr = NULL;
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parents:
diff changeset
107
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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
108 fp = FioFOpenFile(filename, "rb");
5584
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parents:
diff changeset
109 if (fp == NULL) {
13419
ddfb6a69b9c3 (svn r17928) -Codechange: ShowErrorMessage() now takes the summary string before the details string.
alberth <alberth@openttd.org>
parents: 13186
diff changeset
110 ShowErrorMessage(STR_ERROR_PNGMAP, STR_ERROR_PNGMAP_FILE_NOT_FOUND, 0, 0);
5584
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parents:
diff changeset
111 return false;
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parents:
diff changeset
112 }
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parents:
diff changeset
113
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KUDr <KUDr@openttd.org>
parents:
diff changeset
114 png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
115 if (png_ptr == NULL) {
13419
ddfb6a69b9c3 (svn r17928) -Codechange: ShowErrorMessage() now takes the summary string before the details string.
alberth <alberth@openttd.org>
parents: 13186
diff changeset
116 ShowErrorMessage(STR_ERROR_PNGMAP, STR_ERROR_PNGMAP_MISC, 0, 0);
5584
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parents:
diff changeset
117 fclose(fp);
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parents:
diff changeset
118 return false;
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parents:
diff changeset
119 }
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parents:
diff changeset
120
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parents:
diff changeset
121 info_ptr = png_create_info_struct(png_ptr);
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parents:
diff changeset
122 if (info_ptr == NULL || setjmp(png_jmpbuf(png_ptr))) {
13419
ddfb6a69b9c3 (svn r17928) -Codechange: ShowErrorMessage() now takes the summary string before the details string.
alberth <alberth@openttd.org>
parents: 13186
diff changeset
123 ShowErrorMessage(STR_ERROR_PNGMAP, STR_ERROR_PNGMAP_MISC, 0, 0);
5584
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diff changeset
124 fclose(fp);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
125 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
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126 return false;
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127 }
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diff changeset
128
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diff changeset
129 png_init_io(png_ptr, fp);
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130
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131 /* Allocate memory and read image, without alpha or 16-bit samples
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132 * (result is either 8-bit indexed/grayscale or 24-bit RGB) */
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diff changeset
133 png_set_packing(png_ptr);
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diff changeset
134 png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_PACKING | PNG_TRANSFORM_STRIP_ALPHA | PNG_TRANSFORM_STRIP_16, NULL);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
135
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8da1855e9f14 (svn r15428) -Codechange: consistently use colour instead of having both color and colour.
rubidium <rubidium@openttd.org>
parents: 10992
diff changeset
136 /* Maps of wrong colour-depth are not used.
5584
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parents:
diff changeset
137 * (this should have been taken care of by stripping alpha and 16-bit samples on load) */
14205
c0ea5d87de2e (svn r18756) -Codechange: direct accesses to png_*_struct members are deprecated
glx <glx@openttd.org>
parents: 13419
diff changeset
138 if ((png_get_channels(png_ptr, info_ptr) != 1) && (png_get_channels(png_ptr, info_ptr) != 3) && (png_get_bit_depth(png_ptr, info_ptr) != 8)) {
13419
ddfb6a69b9c3 (svn r17928) -Codechange: ShowErrorMessage() now takes the summary string before the details string.
alberth <alberth@openttd.org>
parents: 13186
diff changeset
139 ShowErrorMessage(STR_ERROR_PNGMAP, STR_ERROR_PNGMAP_IMAGE_TYPE, 0, 0);
5584
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diff changeset
140 fclose(fp);
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KUDr <KUDr@openttd.org>
parents:
diff changeset
141 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
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diff changeset
142 return false;
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diff changeset
143 }
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diff changeset
144
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KUDr <KUDr@openttd.org>
parents:
diff changeset
145 if (map != NULL) {
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c0ea5d87de2e (svn r18756) -Codechange: direct accesses to png_*_struct members are deprecated
glx <glx@openttd.org>
parents: 13419
diff changeset
146 *map = MallocT<byte>(png_get_image_width(png_ptr, info_ptr) * png_get_image_height(png_ptr, info_ptr));
5584
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diff changeset
147 ReadHeightmapPNGImageData(*map, png_ptr, info_ptr);
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148 }
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parents:
diff changeset
149
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glx <glx@openttd.org>
parents: 13419
diff changeset
150 *x = png_get_image_width(png_ptr, info_ptr);
c0ea5d87de2e (svn r18756) -Codechange: direct accesses to png_*_struct members are deprecated
glx <glx@openttd.org>
parents: 13419
diff changeset
151 *y = png_get_image_height(png_ptr, info_ptr);
5584
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152
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diff changeset
153 fclose(fp);
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parents:
diff changeset
154 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
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diff changeset
155 return true;
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parents:
diff changeset
156 }
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parents:
diff changeset
157
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diff changeset
158 #endif /* WITH_PNG */
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parents:
diff changeset
159
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parents:
diff changeset
160
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KUDr <KUDr@openttd.org>
parents:
diff changeset
161 /**
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parents:
diff changeset
162 * The BMP Heightmap loader.
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parents:
diff changeset
163 */
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parents:
diff changeset
164 static void ReadHeightmapBMPImageData(byte *map, BmpInfo *info, BmpData *data)
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parents:
diff changeset
165 {
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diff changeset
166 uint x, y;
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parents:
diff changeset
167 byte gray_palette[256];
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parents:
diff changeset
168
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parents:
diff changeset
169 if (data->palette != NULL) {
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parents:
diff changeset
170 uint i;
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parents:
diff changeset
171 bool all_gray = true;
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parents:
diff changeset
172
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parents:
diff changeset
173 if (info->palette_size != 2) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
174 for (i = 0; i < info->palette_size && (info->palette_size != 16 || all_gray); i++) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
175 all_gray &= data->palette[i].r == data->palette[i].g && data->palette[i].r == data->palette[i].b;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
176 gray_palette[i] = RGBToGrayscale(data->palette[i].r, data->palette[i].g, data->palette[i].b);
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parents:
diff changeset
177 }
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parents:
diff changeset
178
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KUDr <KUDr@openttd.org>
parents:
diff changeset
179 /**
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parents:
diff changeset
180 * For a non-gray palette of size 16 we assume that
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parents:
diff changeset
181 * the order of the palette determines the height;
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parents:
diff changeset
182 * the first entry is the sea (level 0), the second one
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parents:
diff changeset
183 * level 1, etc.
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KUDr <KUDr@openttd.org>
parents:
diff changeset
184 */
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KUDr <KUDr@openttd.org>
parents:
diff changeset
185 if (info->palette_size == 16 && !all_gray) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
186 for (i = 0; i < info->palette_size; i++) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
187 gray_palette[i] = 256 * i / info->palette_size;
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parents:
diff changeset
188 }
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KUDr <KUDr@openttd.org>
parents:
diff changeset
189 }
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KUDr <KUDr@openttd.org>
parents:
diff changeset
190 } else {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
191 /**
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KUDr <KUDr@openttd.org>
parents:
diff changeset
192 * For a palette of size 2 we assume that the order of the palette determines the height;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
193 * the first entry is the sea (level 0), the second one is the land (level 1)
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parents:
diff changeset
194 */
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diff changeset
195 gray_palette[0] = 0;
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parents:
diff changeset
196 gray_palette[1] = 16;
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diff changeset
197 }
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diff changeset
198 }
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parents:
diff changeset
199
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parents:
diff changeset
200 /* Read the raw image data and convert in 8-bit grayscale */
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KUDr <KUDr@openttd.org>
parents:
diff changeset
201 for (y = 0; y < info->height; y++) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
202 byte *pixel = &map[y * info->width];
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KUDr <KUDr@openttd.org>
parents:
diff changeset
203 byte *bitmap = &data->bitmap[y * info->width * (info->bpp == 24 ? 3 : 1)];
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parents:
diff changeset
204
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KUDr <KUDr@openttd.org>
parents:
diff changeset
205 for (x = 0; x < info->width; x++) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
206 if (info->bpp != 24) {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
207 *pixel++ = gray_palette[*bitmap++];
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KUDr <KUDr@openttd.org>
parents:
diff changeset
208 } else {
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KUDr <KUDr@openttd.org>
parents:
diff changeset
209 *pixel++ = RGBToGrayscale(*bitmap, *(bitmap + 1), *(bitmap + 2));
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KUDr <KUDr@openttd.org>
parents:
diff changeset
210 bitmap += 3;
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KUDr <KUDr@openttd.org>
parents:
diff changeset
211 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
212 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
213 }
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 * 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
218 * 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
219 * 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
220 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
221 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
222 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
223 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
224 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
225 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
226 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
227
6179
e3e61b92574b (svn r8950) -Cleanup: doxygen changes. Mostly @files missing tags and a few comments style.
belugas <belugas@openttd.org>
parents: 5618
diff changeset
228 /* 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
229 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
230
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
231 f = FioFOpenFile(filename, "rb");
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
232 if (f == NULL) {
13419
ddfb6a69b9c3 (svn r17928) -Codechange: ShowErrorMessage() now takes the summary string before the details string.
alberth <alberth@openttd.org>
parents: 13186
diff changeset
233 ShowErrorMessage(STR_ERROR_BMPMAP, STR_ERROR_PNGMAP_FILE_NOT_FOUND, 0, 0);
5584
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KUDr <KUDr@openttd.org>
parents:
diff changeset
234 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
235 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
236
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
237 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
238
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
239 if (!BmpReadHeader(&buffer, &info, &data)) {
13419
ddfb6a69b9c3 (svn r17928) -Codechange: ShowErrorMessage() now takes the summary string before the details string.
alberth <alberth@openttd.org>
parents: 13186
diff changeset
240 ShowErrorMessage(STR_ERROR_BMPMAP, STR_ERROR_BMPMAP_IMAGE_TYPE, 0, 0);
5584
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KUDr <KUDr@openttd.org>
parents:
diff changeset
241 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
242 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
243 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
244 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
245
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
246 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
247 if (!BmpReadBitmap(&buffer, &info, &data)) {
13419
ddfb6a69b9c3 (svn r17928) -Codechange: ShowErrorMessage() now takes the summary string before the details string.
alberth <alberth@openttd.org>
parents: 13186
diff changeset
248 ShowErrorMessage(STR_ERROR_BMPMAP, STR_ERROR_BMPMAP_IMAGE_TYPE, 0, 0);
5584
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KUDr <KUDr@openttd.org>
parents:
diff changeset
249 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
250 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
251 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
252 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
253
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
254 *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
255 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
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
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
258 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
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 *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
261 *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
262
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
263 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
264 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
265 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
266
6540
b71c1ad2239c (svn r9729) -Documentation: add some documentation in various places
rubidium <rubidium@openttd.org>
parents: 6247
diff changeset
267 /**
b71c1ad2239c (svn r9729) -Documentation: add some documentation in various places
rubidium <rubidium@openttd.org>
parents: 6247
diff changeset
268 * 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
269 * 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
270 * @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
271 * @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
272 * @param map the input map
b71c1ad2239c (svn r9729) -Documentation: add some documentation in various places
rubidium <rubidium@openttd.org>
parents: 6247
diff changeset
273 */
5584
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KUDr <KUDr@openttd.org>
parents:
diff changeset
274 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
275 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
276 /* 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
277 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
278
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
279 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
280 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
281 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
282 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
283 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
284 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
285
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
286 /* 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
287 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
288 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
289 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
290 width = MapSizeX();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
291 height = MapSizeY();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
292 break;
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_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 = MapSizeY();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
295 height = MapSizeX();
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
296 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
297 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
298
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
299 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
300 /* 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
301 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
302 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
303 } else {
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 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
305 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
306 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
307 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
308
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 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
310 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
311 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
312 }
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
313
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
314 /* 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
315 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
316 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
317 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
318 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
319 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
320 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
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
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
323 /* 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
324 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
325 (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
326 (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
327 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
328 } else {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
329 /* 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
330 * 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
331 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
332 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
333 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
334 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
335 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
336 break;
ea1998aeffe2 (svn r8077) -Cleanup: Restructure some switch() statements' default case when they're unreachable
Darkvater <Darkvater@openttd.org>
parents: 5616
diff changeset
337 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
338 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
339 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
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
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_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
343 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
344
11085
8da1855e9f14 (svn r15428) -Codechange: consistently use colour instead of having both color and colour.
rubidium <rubidium@openttd.org>
parents: 10992
diff changeset
345 /* 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
346 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
347 }
10855
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
348 /* 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
349 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
350 (!_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
351 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
352 }
5584
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
353 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
354 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
355 }
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 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
358 * 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
359 * 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
360 */
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
361 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
362 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
363 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
364 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
365 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
366
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
367 /* 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
368 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
369 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
370
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
371 /* 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
372 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
373 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
374 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
375 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
376 /* 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
377 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
378 }
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
379 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
380 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
381 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
382 }
5584
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 /* 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
386 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
387 /* 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
388 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
389 }
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
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
393 /* 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
394 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
395 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
396 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
397 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
398 /* 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
399 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
400 }
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
401
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
402 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
403 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
404 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
405 }
5584
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 /* 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
409 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
410 /* 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
411 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
412 }
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 }
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 /**
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
418 * 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
419 */
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
420 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
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 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
423 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
424 #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
425 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
426 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
427 #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
428 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
429 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
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
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
433 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
434 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
435 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
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
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
438 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
439 {
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
440 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
441 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
442
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
443 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
444 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
445 return;
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
446 }
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 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
449 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
450
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
451 FixSlopes();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
452 MarkWholeScreenDirty();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
453 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
454
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
455 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
456 {
10855
7881d9cd55ab (svn r15190) -Feature: Allow terraforming of the tiles at the edges of the map.
Yexo <Yexo@openttd.org>
parents: 10571
diff changeset
457 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
458 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
459 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
460 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
461 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
462 }
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
463
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
464 FixSlopes();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
465 MarkWholeScreenDirty();
4b26bd55bd24 (svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
KUDr <KUDr@openttd.org>
parents:
diff changeset
466 }