/**
* The main new land generator using Perlin noise. Desert landscape is handled
* different to all others to give a desert valley between two high mountains.
* Clearly if a low height terrain (flat/very flat) is chosen, then the tropic
* areas won't be high enough, and there will be very little tropic on the map.
* Thus Tropic works best on Hilly or Mountainous.
*/
void GenerateTerrainPerlin()
{
if (!AllocHeightMap()) return;
GenerateWorldSetAbortCallback(FreeHeightMap);
HeightMapGenerate();
IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
HeightMapNormalize();
IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
/* First make sure the tiles at the north border are void tiles if needed. */
if (_settings_game.construction.freeform_edges) {
for (uint x = 0; x < MapSizeX(); x++) MakeVoid(TileXY(x, 0));
for (uint y = 0; y < MapSizeY(); y++) MakeVoid(TileXY(0, y));
}
int max_height = H2I(TGPGetMaxHeight());
/* Transfer height map into OTTD map */
for (int y = 0; y < _height_map.size_y; y++) {
for (int x = 0; x < _height_map.size_x; x++) {
TgenSetTileHeight(TileXY(x, y), Clamp(H2I(_height_map.height(x, y)), 0, max_height));
}
}
IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
FreeHeightMap();
GenerateWorldSetAbortCallback(NULL);
}
/**
* The main new land generator using Perlin noise. Desert landscape is handled
* different to all others to give a desert valley between two high mountains.
* Clearly if a low height terrain (flat/very flat) is chosen, then the tropic
* areas wont be high enough, and there will be very little tropic on the map.
* Thus Tropic works best on Hilly or Mountainous.
*/
void GenerateTerrainPerlin()
{
uint x, y;
if (!AllocHeightMap()) return;
GenerateWorldSetAbortCallback(FreeHeightMap);
HeightMapGenerate();
IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
HeightMapNormalize();
IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
/* First make sure the tiles at the north border are void tiles if needed. */
if (_settings_game.construction.freeform_edges) {
for (y = 0; y < _height_map.size_y - 1; y++) MakeVoid(_height_map.size_x * y);
for (x = 0; x < _height_map.size_x; x++) MakeVoid(x);
}
/* Transfer height map into OTTD map */
for (y = 0; y < _height_map.size_y; y++) {
for (x = 0; x < _height_map.size_x; x++) {
int height = H2I(_height_map.height(x, y));
if (height < 0) height = 0;
if (height > 15) height = 15;
TgenSetTileHeight(TileXY(x, y), height);
}
}
IncreaseGeneratingWorldProgress(GWP_LANDSCAPE);
FreeHeightMap();
GenerateWorldSetAbortCallback(NULL);
}