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authortruebrain <truebrain@openttd.org>2009-01-13 23:50:12 +0000
committertruebrain <truebrain@openttd.org>2009-01-13 23:50:12 +0000
commit6fe54a2d1a06b1d55cd649919785af6f4890f9da (patch)
treef92593f0f2201b7be3466211b9ba0dba1a7ab3ca /src/ai
parente00cf92f47837d26d5b0fffb0668c5c717b3bacc (diff)
downloadopenttd-6fe54a2d1a06b1d55cd649919785af6f4890f9da.tar.xz
(svn r15078) -Fix [NoAI]: AIMap didn't filter its input (Yexo)
Diffstat (limited to 'src/ai')
-rw-r--r--src/ai/api/ai_map.cpp19
-rw-r--r--src/ai/api/ai_map.hpp12
2 files changed, 19 insertions, 12 deletions
diff --git a/src/ai/api/ai_map.cpp b/src/ai/api/ai_map.cpp
index 2c8547f95..b3a7f753c 100644
--- a/src/ai/api/ai_map.cpp
+++ b/src/ai/api/ai_map.cpp
@@ -26,37 +26,44 @@
return ::MapSizeY();
}
-/* static */ uint32 AIMap::GetTileX(TileIndex t)
+/* static */ int32 AIMap::GetTileX(TileIndex t)
{
+ if (!::IsValidTile(t)) return -1;
return ::TileX(t);
}
-/* static */ uint32 AIMap::GetTileY(TileIndex t)
+/* static */ int32 AIMap::GetTileY(TileIndex t)
{
+ if (!::IsValidTile(t)) return -1;
return ::TileY(t);
}
/* static */ TileIndex AIMap::GetTileIndex(uint32 x, uint32 y)
{
+ if (x >= ::MapSizeX() || y >= MapSizeY()) return INVALID_TILE;
return ::TileXY(x, y);
}
-/* static */ uint32 AIMap::DistanceManhattan(TileIndex t1, TileIndex t2)
+/* static */ int32 AIMap::DistanceManhattan(TileIndex t1, TileIndex t2)
{
+ if (!::IsValidTile(t1) || !::IsValidTile(t2)) return -1;
return ::DistanceManhattan(t1, t2);
}
-/* static */ uint32 AIMap::DistanceMax(TileIndex t1, TileIndex t2)
+/* static */ int32 AIMap::DistanceMax(TileIndex t1, TileIndex t2)
{
+ if (!::IsValidTile(t1) || !::IsValidTile(t2)) return -1;
return ::DistanceMax(t1, t2);
}
-/* static */ uint32 AIMap::DistanceSquare(TileIndex t1, TileIndex t2)
+/* static */ int32 AIMap::DistanceSquare(TileIndex t1, TileIndex t2)
{
+ if (!::IsValidTile(t1) || !::IsValidTile(t2)) return -1;
return ::DistanceSquare(t1, t2);
}
-/* static */ uint32 AIMap::DistanceFromEdge(TileIndex t)
+/* static */ int32 AIMap::DistanceFromEdge(TileIndex t)
{
+ if (!::IsValidTile(t)) return -1;
return ::DistanceFromEdge(t);
}
diff --git a/src/ai/api/ai_map.hpp b/src/ai/api/ai_map.hpp
index f14c360eb..9c544ea25 100644
--- a/src/ai/api/ai_map.hpp
+++ b/src/ai/api/ai_map.hpp
@@ -49,7 +49,7 @@ public:
* @return The X-value.
* @post Return value is always lower than GetMapSizeX().
*/
- static uint32 GetTileX(TileIndex tile);
+ static int32 GetTileX(TileIndex tile);
/**
* Gets the place along the SE/NW border (Y-value).
@@ -58,7 +58,7 @@ public:
* @return The Y-value.
* @post Return value is always lower than GetMapSizeY().
*/
- static uint32 GetTileY(TileIndex tile);
+ static int32 GetTileY(TileIndex tile);
/**
* Gets the TileIndex given a x,y-coordinate.
@@ -79,7 +79,7 @@ public:
* @pre IsValidTile(tile_to).
* @return The Manhattan distance between the tiles.
*/
- static uint32 DistanceManhattan(TileIndex tile_from, TileIndex tile_to);
+ static int32 DistanceManhattan(TileIndex tile_from, TileIndex tile_to);
/**
* Calculates the distance between two tiles via 1D calculation.
@@ -91,7 +91,7 @@ public:
* @pre IsValidTile(tile_to).
* @return The maximum distance between the tiles.
*/
- static uint32 DistanceMax(TileIndex tile_from, TileIndex tile_to);
+ static int32 DistanceMax(TileIndex tile_from, TileIndex tile_to);
/**
* The squared distance between the two tiles.
@@ -103,7 +103,7 @@ public:
* @pre IsValidTile(tile_to).
* @return The squared distance between the tiles.
*/
- static uint32 DistanceSquare(TileIndex tile_from, TileIndex tile_to);
+ static int32 DistanceSquare(TileIndex tile_from, TileIndex tile_to);
/**
* Calculates the shortest distance to the edge.
@@ -111,7 +111,7 @@ public:
* @pre IsValidTile(tile).
* @return The distances to the closest edge.
*/
- static uint32 DistanceFromEdge(TileIndex tile);
+ static int32 DistanceFromEdge(TileIndex tile);
};
#endif /* AI_MAP_HPP */