(svn r4073) Add functions to make and test for (most) unmovable tiles

1 files changed, 65 insertions, 0 deletions

diff --git a/unmovable_map.h b/unmovable_map.h
new file mode 100644
index 000000000..32375c2cd
--- /dev/null
+++ b/unmovable_map.h
@@ -0,0 +1,65 @@
+/* $Id$ */
+
+typedef enum UnmovableType {
+	UNMOVABLE_TRANSMITTER = 0,
+	UNMOVABLE_LIGHTHOUSE  = 1,
+	UNMOVABLE_STATUE      = 2,
+	UNMOVABLE_OWNED_LAND  = 3
+} UnmovableType;
+
+
+static inline UnmovableType GetUnmovableType(TileIndex t)
+{
+	return _m[t].m5;
+}
+
+
+static inline bool IsTransmitterTile(TileIndex t)
+{
+	return
+		IsTileType(t, MP_UNMOVABLE) &&
+		GetUnmovableType(t) == UNMOVABLE_TRANSMITTER;
+}
+
+
+static inline bool IsOwnedLand(TileIndex t)
+{
+	return GetUnmovableType(t) == UNMOVABLE_OWNED_LAND;
+}
+
+static inline bool IsOwnedLandTile(TileIndex t)
+{
+	return IsTileType(t, MP_UNMOVABLE) && IsOwnedLand(t);
+}
+
+
+static inline void MakeUnmovable(TileIndex t, UnmovableType u, Owner o)
+{
+	SetTileType(t, MP_UNMOVABLE);
+	SetTileOwner(t, o);
+	_m[t].m2 = 0;
+	_m[t].m3 = 0;
+	_m[t].m4 = 0;
+	_m[t].m5 = u;
+}
+
+
+static inline void MakeTransmitter(TileIndex t)
+{
+	MakeUnmovable(t, UNMOVABLE_TRANSMITTER, OWNER_NONE);
+}
+
+static inline void MakeLighthouse(TileIndex t)
+{
+	MakeUnmovable(t, UNMOVABLE_LIGHTHOUSE, OWNER_NONE);
+}
+
+static inline void MakeStatue(TileIndex t, Owner o)
+{
+	MakeUnmovable(t, UNMOVABLE_STATUE, o);
+}
+
+static inline void MakeOwnedLand(TileIndex t, Owner o)
+{
+	MakeUnmovable(t, UNMOVABLE_OWNED_LAND, o);
+}