added collision

src/de/miaurizius/jgame2d/tile/TileManager.java

@@ -9,8 +9,8 @@ import java.io.*;
 public class TileManager {
 
     GamePanel panel;
-    Tile[] tile;
-    int[][] mapTileNum;
+    public Tile[] tile;
+    public int[][] mapTileNum;
 
     public TileManager(GamePanel panel) {
         this.panel = panel;
@@ -27,15 +27,18 @@ public class TileManager {
 
             tile[1] = new Tile();
             tile[1].image = ImageIO.read(new FileInputStream("assets/tiles/wall.png"));
+            tile[1].collision = true;
 
             tile[2] = new Tile();
             tile[2].image = ImageIO.read(new FileInputStream("assets/tiles/water.png"));
+            tile[2].collision = true;
 
             tile[3] = new Tile();
             tile[3].image = ImageIO.read(new FileInputStream("assets/tiles/earth.png"));
 
             tile[4] = new Tile();
             tile[4].image = ImageIO.read(new FileInputStream("assets/tiles/tree.png"));
+            tile[4].collision = true;
 
             tile[5] = new Tile();
             tile[5].image = ImageIO.read(new FileInputStream("assets/tiles/sand.png"));