Added Astar algo

src/ei/game/scene/Map.java

@@ -34,6 +34,15 @@ public class Map {
 		}
 	}
 	
+	/**
+	 * Returns the size of the map
+	 * 
+	 * @return The size of the map
+	 */
+	public Vector2i getSize(){
+		return new Vector2i(width,hight);
+	}
+	
 	/**
 	 * Returns the pos of the map by the pixel
 	 * @param x x pixels
@@ -66,6 +75,8 @@ public class Map {
 	 * @return True if empty else false
 	 */
 	public boolean isPosEmpty(int x, int y){
+		if(x < 0 || y < 0 || x >= width || y >= hight)
+			return false;
 		if(map[x][y] == null){
 			return true;
 		}