add sleeping functionality to Tent object and update player image handling

src/de/miaurizius/jgame2d/entity/Player.java

@@ -11,6 +11,7 @@ import de.miaurizius.jgame2d.entity.item.SwordNormalObj;
 import de.miaurizius.jgame2d.entity.projectile.FireballObj;
 
 import java.awt.*;
+import java.awt.image.BufferedImage;
 
 public class Player extends Entity {
 
@@ -307,6 +308,16 @@ public class Player extends Entity {
         life = maxLife;
         invincible = false;
     }
+    public void getSleepingImage(BufferedImage image) {
+        down1 = image;
+        down2 = image;
+        up1 = image;
+        up2 = image;
+        left1 = image;
+        left2 = image;
+        right1 = image;
+        right2 = image;
+    }
 
     // SETTING THINGS UP
     public void setDefaultValues() {