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Code Issues Releases Wiki Activity

Change: Avoid building farm fields in wetlands (#14846)

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This commit is contained in:
Tyler Trahan
2025-12-02 09:28:12 -05:00
committed by GitHub
parent faf3bb9739
commit 595b696d61
1 changed files with 15 additions and 8 deletions
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23
src/industry_cmd.cpp
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@@ -993,16 +993,23 @@ static const uint8_t _plantfarmfield_type[] = {1, 1, 1, 1, 1, 3, 3, 4, 4, 4, 5,
/**
* Check whether the tile can be replaced by a farm field.
* @param tile the tile to investigate.
* @param allow_fields if true, the method will return true even if
* the tile is a farm tile, otherwise the tile may not be a farm tile
* @param tile The tile to investigate.
* @param allow_fields Can we replace an existing field?
* @param allow_rough Can we build on rough tiles? (clear or trees)
* @return true if the tile can become a farm field
*/
static bool IsSuitableForFarmField(TileIndex tile, bool allow_fields)
static bool IsSuitableForFarmField(TileIndex tile, bool allow_fields, bool allow_rough)
{
switch (GetTileType(tile)) {
case MP_CLEAR: return !IsSnowTile(tile) && !IsClearGround(tile, CLEAR_DESERT) && (allow_fields || !IsClearGround(tile, CLEAR_FIELDS));
case MP_TREES: return GetTreeGround(tile) != TREE_GROUND_SHORE;
case MP_CLEAR:
switch (GetClearGround(tile)) {
case CLEAR_SNOW: return false;
case CLEAR_DESERT: return false;
case CLEAR_ROUGH: return allow_rough;
case CLEAR_FIELDS: return allow_fields;
default: return true;
}
case MP_TREES: return GetTreeGround(tile) != TREE_GROUND_SHORE && (allow_rough || GetTreeGround(tile) != TREE_GROUND_ROUGH);
default: return false;
}
}
@@ -1059,7 +1066,7 @@ static void PlantFarmField(TileIndex tile, IndustryID industry)
int count = 0;
for (TileIndex cur_tile : ta) {
assert(cur_tile < Map::Size());
count += IsSuitableForFarmField(cur_tile, false);
count += IsSuitableForFarmField(cur_tile, false, false);
}
if (count * 2 < ta.w * ta.h) return;
@@ -1071,7 +1078,7 @@ static void PlantFarmField(TileIndex tile, IndustryID industry)
/* make field */
for (TileIndex cur_tile : ta) {
assert(cur_tile < Map::Size());
if (IsSuitableForFarmField(cur_tile, true)) {
if (IsSuitableForFarmField(cur_tile, true, true)) {
MakeField(cur_tile, field_type, industry);
SetClearCounter(cur_tile, counter);
MarkTileDirtyByTile(cur_tile);