1 files changed, 121 insertions, 0 deletions
diff --git a/src/unmovable_map.h b/src/unmovable_map.h
new file mode 100644
index 000000000..d016a7ac1
--- /dev/null
+++ b/src/unmovable_map.h
@@ -0,0 +1,121 @@
+/* $Id$ */
+
+#ifndef UNMOVABLE_MAP_H
+#define UNMOVABLE_MAP_H
+
+enum {
+	HQ_NUM_TILE = 4,
+	HQ_NUM_SIZE = 5
+};
+
+typedef enum UnmovableType {
+	UNMOVABLE_TRANSMITTER = 0,
+	UNMOVABLE_LIGHTHOUSE  = 1,
+	UNMOVABLE_STATUE      = 2,
+	UNMOVABLE_OWNED_LAND  = 3,
+	UNMOVABLE_HQ_NORTH    = 0x80,
+	UNMOVABLE_HQ_WEST     = 0x81,
+	UNMOVABLE_HQ_EAST     = 0x82,
+	UNMOVABLE_HQ_SOUTH    = 0x83,
+
+	UNMOVABLE_HQ_END      = UNMOVABLE_HQ_NORTH + HQ_NUM_SIZE * HQ_NUM_TILE
+} UnmovableType;
+
+
+
+static inline UnmovableType GetUnmovableType(TileIndex t)
+{
+	assert(IsTileType(t, MP_UNMOVABLE));
+	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)
+{
+	assert(IsTileType(t, MP_UNMOVABLE));
+	return GetUnmovableType(t) == UNMOVABLE_OWNED_LAND;
+}
+
+static inline bool IsOwnedLandTile(TileIndex t)
+{
+	return IsTileType(t, MP_UNMOVABLE) && IsOwnedLand(t);
+}
+
+static inline bool IsCompanyHQ(TileIndex t)
+{
+	return IS_INT_INSIDE(GetUnmovableType(t), UNMOVABLE_HQ_NORTH, UNMOVABLE_HQ_END);
+}
+
+static inline byte GetCompanyHQSize(TileIndex t)
+{
+	assert(IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t));
+	return GB(_m[t].m5, 2, 3);
+}
+
+static inline byte GetCompanyHQSection(TileIndex t)
+{
+	assert(IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t));
+	return GB(_m[t].m5, 0, 5);
+}
+
+
+static inline void EnlargeCompanyHQ(TileIndex t, byte size)
+{
+	size *= 4;
+	if (size <= _m[t].m5 - UNMOVABLE_HQ_NORTH) return;
+
+	_m[t + TileDiffXY(0, 0)].m5 = UNMOVABLE_HQ_NORTH + size;
+	_m[t + TileDiffXY(0, 1)].m5 = UNMOVABLE_HQ_WEST  + size;
+	_m[t + TileDiffXY(1, 0)].m5 = UNMOVABLE_HQ_EAST  + size;
+	_m[t + TileDiffXY(1, 1)].m5 = UNMOVABLE_HQ_SOUTH + size;
+}
+
+
+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);
+}
+
+static inline void MakeCompanyHQ(TileIndex t, Owner o)
+{
+	MakeUnmovable(t + TileDiffXY(0, 0), UNMOVABLE_HQ_NORTH, o);
+	MakeUnmovable(t + TileDiffXY(0, 1), UNMOVABLE_HQ_WEST, o);
+	MakeUnmovable(t + TileDiffXY(1, 0), UNMOVABLE_HQ_EAST, o);
+	MakeUnmovable(t + TileDiffXY(1, 1), UNMOVABLE_HQ_SOUTH, o);
+}
+
+#endif /* UNMOVABLE_MAP_H */