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-rw-r--r--src/town_cmd.cpp11
1 files changed, 8 insertions, 3 deletions
diff --git a/src/town_cmd.cpp b/src/town_cmd.cpp
index 8928ffdbf..f3dbe7ae4 100644
--- a/src/town_cmd.cpp
+++ b/src/town_cmd.cpp
@@ -1159,10 +1159,15 @@ static bool GrowTownWithBridge(const Town *t, const TileIndex tile, const DiagDi
const int delta = TileOffsByDiagDir(bridge_dir);
+ /* To prevent really small towns from building disproportionately
+ * long bridges, make the max a function of its population. */
+ int base_bridge_length = 4;
+ int max_bridge_length = t->cache.population / 1000 + base_bridge_length;
+
if (slope == SLOPE_FLAT) {
/* Bridges starting on flat tiles are only allowed when crossing rivers, rails or one-way roads. */
do {
- if (bridge_length++ >= 4) {
+ if (bridge_length++ >= base_bridge_length) {
/* Allow to cross rivers, not big lakes, nor large amounts of rails or one-way roads. */
return false;
}
@@ -1170,8 +1175,8 @@ static bool GrowTownWithBridge(const Town *t, const TileIndex tile, const DiagDi
} while (IsValidTile(bridge_tile) && ((IsWaterTile(bridge_tile) && !IsSea(bridge_tile)) || IsPlainRailTile(bridge_tile) || (IsNormalRoadTile(bridge_tile) && GetDisallowedRoadDirections(bridge_tile) != DRD_NONE)));
} else {
do {
- if (bridge_length++ >= 11) {
- /* Max 11 tile long bridges */
+ if (bridge_length++ >= max_bridge_length) {
+ /* Ensure the bridge is not longer than the max allowed length. */
return false;
}
bridge_tile += delta;