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-rw-r--r--src/water_cmd.cpp12
1 files changed, 10 insertions, 2 deletions
diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
index 580ffa4d5..ae5efada7 100644
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -161,7 +161,9 @@ void MakeWaterKeepingClass(TileIndex tile, Owner o)
/* Autoslope might turn an originally canal or river tile into land */
int z;
- if (GetTileSlope(tile, &z) != SLOPE_FLAT) {
+ Slope slope = GetTileSlope(tile, &z);
+
+ if (slope != SLOPE_FLAT) {
if (wc == WATER_CLASS_CANAL) {
/* If we clear the canal, we have to remove it from the infrastructure count as well. */
Company *c = Company::GetIfValid(o);
@@ -169,8 +171,14 @@ void MakeWaterKeepingClass(TileIndex tile, Owner o)
c->infrastructure.water--;
DirtyCompanyInfrastructureWindows(c->index);
}
+ /* Sloped canals are locks and no natural water remains whatever the slope direction */
+ wc = WATER_CLASS_INVALID;
+ }
+
+ /* There must not be water sloped invalidly, whatever class it may be */
+ if (GetInclinedSlopeDirection(slope) == INVALID_DIAGDIR) {
+ wc = WATER_CLASS_INVALID;
}
- wc = WATER_CLASS_INVALID;
}
if (wc == WATER_CLASS_SEA && z > 0) {