(svn r25844) -Change: Increase maximum number of object instances on the map from 64k to about 16M.

src/object_base.h

@@ -18,7 +18,7 @@
 #include "town_type.h"
 #include "date_type.h"
 
-typedef Pool<Object, ObjectID, 64, 64000> ObjectPool;
+typedef Pool<Object, ObjectID, 64, 0xFF0000> ObjectPool;
 extern ObjectPool _object_pool;
 
 /** An object, such as transmitter, on the map. */

src/object_map.h

@@ -49,7 +49,7 @@ static inline bool IsObjectTypeTile(TileIndex t, ObjectType type)
 static inline ObjectID GetObjectIndex(TileIndex t)
 {
 	assert(IsTileType(t, MP_OBJECT));
-	return _m[t].m2;
+	return _m[t].m2 | _m[t].m5 << 16;
 }
 
 /**
@@ -81,7 +81,7 @@ static inline void MakeObject(TileIndex t, Owner o, ObjectID index, WaterClass w
 	_m[t].m2 = index;
 	_m[t].m3 = random;
 	_m[t].m4 = 0;
-	_m[t].m5 = 0;
+	_m[t].m5 = index >> 16;
 	SB(_m[t].m6, 2, 4, 0);
 	_me[t].m7 = 0;
 }

src/object_type.h

@@ -28,11 +28,11 @@ static const ObjectType NUM_OBJECTS         = 64000;  ///< Number of supported o
 static const ObjectType INVALID_OBJECT_TYPE = 0xFFFF; ///< An invalid object
 
 /** Unique identifier for an object. */
-typedef uint16 ObjectID;
+typedef uint32 ObjectID;
 
 struct Object;
 struct ObjectSpec;
 
-static const ObjectID INVALID_OBJECT = 0xFFFF; ///< An invalid object
+static const ObjectID INVALID_OBJECT = 0xFFFFFFFF; ///< An invalid object
 
 #endif /* OBJECT_TYPE_H */

src/saveload/afterload.cpp

@@ -2819,9 +2819,9 @@ bool AfterLoadGame()
 		/* Move ObjectType from map to pool */
 		for (TileIndex t = 0; t < map_size; t++) {
 			if (IsTileType(t, MP_OBJECT)) {
-				Object *o = Object::GetByTile(t);
+				Object *o = Object::Get(_m[t].m2);
 				o->type = _m[t].m5;
-				_m[t].m5 = 0; // cleanup for next usage
+				_m[t].m5 = 0; // zero upper bits of (now bigger) ObjectID
 			}
 		}
 	}