diff --git a/src/saland/GameRegion.cpp b/src/saland/GameRegion.cpp
index 99711d9..c4dc482 100644
--- a/src/saland/GameRegion.cpp
+++ b/src/saland/GameRegion.cpp
@@ -83,6 +83,7 @@ void GameRegion::SpawnPrefab(const Prefab& prefab, int destX, int destY) {
 		}
 	}
 	ApplyPrefab(world.tm, destX, destY, prefab);
+	this->world.init_physics(this->physicsBox);
 }
 
 void GameRegion::SpawnItem(const ItemDef& def, float destX, float destY) {
@@ -138,8 +139,8 @@ void GameRegion::SpawnItem(const ItemDef& def, float destX, float destY) {
 	}
 }
 
-std::string GameRegion::GetRegionType(int region_x, int region_y) const {
-	if (region_x == -1 && region_y == 0) {
+static std::string GetRegionType(int region_x, int region_y) {
+	if (region_x < 0 && region_y == 0) {
 		return "forrest";
 	}
 	if (region_x == 0 && region_y == 0) {
@@ -164,25 +165,32 @@ void GameRegion::ProcessRegionEnter(World& world) {
 }
 
 
+static std::string RegionChooseMapTemplate(int region_x, int region_y) {
+	std::string loadMap = "maps/sample1.tmx";
+	if (GetRegionType(region_x, region_y) == "forrest") {
+		loadMap = "maps/template_forrest.tmx";
+	}
+	if (GetRegionType(region_x, region_y) == "start") {
+		loadMap = "maps/template_start.tmx";
+	}
+	if (region_x == 0 && region_y == -2) {
+		loadMap = "maps/city_0x-2.tmx";
+	}
+	if (region_x == 3 && region_y == 3) {
+		loadMap = "maps/template_forrest2.tmx";
+	}
+	return loadMap;
+}
+
+
+
 void GameRegion::Init(int x, int y, const std::string& worldName, bool forceResetWorld) {
 	region_x = x;
 	region_y = y;
 	mapFileName = createFileName(region_x, region_y, worldName);
 	std::string loadMap = mapFileName;
 	if (!sago::FileExists(loadMap.c_str()) || forceResetWorld) {
-		loadMap = "maps/sample1.tmx";
-		if (GetRegionType(region_x, region_y) == "forrest") {
-			loadMap = "maps/template_forrest.tmx";
-		}
-		if (GetRegionType(region_x, region_y) == "start") {
-			loadMap = "maps/template_start.tmx";
-		}
-		if (region_x == 0 && region_y == -2) {
-			loadMap = "maps/city_0x-2.tmx";
-		}
-		if (region_x == 3 && region_y == 3) {
-			loadMap = "maps/template_forrest2.tmx";
-		}
+		loadMap = RegionChooseMapTemplate(region_x, region_y);
 	}
 	b2Vec2 gravity(0.0f, 0.0f);
 	placeables.clear();
diff --git a/src/saland/GameRegion.hpp b/src/saland/GameRegion.hpp
index d2911ce..04ebc53 100644
--- a/src/saland/GameRegion.hpp
+++ b/src/saland/GameRegion.hpp
@@ -61,7 +61,6 @@ public:
 	void SpawnMonster(const MonsterDef& def, float destX, float destY) ;
 	void SpawnItem(const ItemDef& def, float destX, float destY) ;
 	void SpawnPrefab(const Prefab& prefab, int destX, int destY);
-	std::string GetRegionType(int x, int y) const;
 	void ProcessRegionEnter(World& world);
 private:
 	int region_x = 0;
diff --git a/src/saland/model/World.cpp b/src/saland/model/World.cpp
index b176d50..26164c5 100644
--- a/src/saland/model/World.cpp
+++ b/src/saland/model/World.cpp
@@ -91,6 +91,7 @@ void fill_blocking_tiles(std::vector<bool>& output, const sago::tiled::TileMap& 
 	output.resize(tm.height*tm.width);
 	for (int i = 0; i < tm.height; ++i) {
 		for (int j = 0; j < tm.width; ++j) {
+			output[i+j*tm.width] = false;
 			uint32_t gid = sago::tiled::getTileFromLayer(tm, layer, i, j);
 			if (gid == 0) {
 				continue;
@@ -276,8 +277,10 @@ void World::init(std::shared_ptr<b2World>& world, const std::string& mapFileName
 	init_tilemap(tm, blockingLayer, blockingLayer_overlay_1);
 	init_physics(world);
 	protected_tiles.resize(tm.height*tm.width);
+	
 	for (int x=0; x < tm.width; ++x) {
 		for (int y=0; y < tm.height; ++y) {
+			protected_tiles[x+y*tm.width] = false;
 			if (x < 2 && y > tm.layers.at(0).height/2-6 && y < tm.layers.at(0).height/2+5) {
 				protected_tiles[x+y*tm.width] = true;
 			}