From: Christoph Sommer <mail@christoph-sommer.de>
Date: Sun, 30 Apr 2006 21:32:58 +0000 (+0000)
Subject: Experimented with loading hitbox from .sprite file
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=93a74f493825b4a4c76774f190b2fc39b2488d8f;p=supertux.git

Experimented with loading hitbox from .sprite file

SVN-Revision: 3475
---

diff --git a/data/images/creatures/bouncing_snowball/bouncing_snowball.sprite b/data/images/creatures/bouncing_snowball/bouncing_snowball.sprite
index 0233b5546..9adbbc8cd 100644
--- a/data/images/creatures/bouncing_snowball/bouncing_snowball.sprite
+++ b/data/images/creatures/bouncing_snowball/bouncing_snowball.sprite
@@ -1,8 +1,7 @@
 (supertux-sprite
  (action
   (name "left")
-  (x-offset 1)
-  (y-offset 0)
+  (hitbox 1 0 0 0)
   (images "left-0.png"
           "left-1.png"
           "left-2.png"
@@ -12,13 +11,11 @@
 
  (action
   (name "right")
-  (x-offset 1)
-  (y-offset 0)
+  (hitbox 1 0 0 0)
   (mirror-action "left"))
  
  (action
   (name "squished")
-  (x-offset 1)
-  (y-offset -19)
+  (hitbox 1 --19 0 0)
   (images "../snowball/squished-left.png"))
 )
diff --git a/data/images/creatures/dart/dart.sprite b/data/images/creatures/dart/dart.sprite
index 461a530a1..be1fe4967 100644
--- a/data/images/creatures/dart/dart.sprite
+++ b/data/images/creatures/dart/dart.sprite
@@ -1,14 +1,12 @@
 (supertux-sprite
   (action
     (name "flying-left")
-    (x-offset 3)
-    (y-offset 3)
+    (hitbox 3 3 0 0)
     (images "flying.png")
     )
   (action
     (name "flying-right")
-    (x-offset 3)
-    (y-offset 3)
+    (hitbox 3 3 0 0)
     (mirror-action "flying-left")
     )
   )
diff --git a/data/images/creatures/dispenser/dispenser.sprite b/data/images/creatures/dispenser/dispenser.sprite
index d955a6f71..358eca5a9 100644
--- a/data/images/creatures/dispenser/dispenser.sprite
+++ b/data/images/creatures/dispenser/dispenser.sprite
@@ -1,32 +1,27 @@
 (supertux-sprite
  (action
   (name "dropper")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "dropper.png"))
  
  (action
   (name "working-left")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "working.png"))
  
  (action
   (name "broken-left")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "broken.png"))
  
  (action
   (name "working-right")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (mirror-action "working-left"))
  
  (action
   (name "broken-right")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (mirror-action "broken-left"))
 )
 
diff --git a/data/images/creatures/dummyguy/dummyguy.sprite b/data/images/creatures/dummyguy/dummyguy.sprite
index ec4014735..f2200731d 100644
--- a/data/images/creatures/dummyguy/dummyguy.sprite
+++ b/data/images/creatures/dummyguy/dummyguy.sprite
@@ -2,42 +2,36 @@
  (action
   (name "left")
   (fps 6)
-  (x-offset 0)
-  (y-offset 40)
+  (hitbox 0 40 0 0)
   (images "walk-1.png" "walk-2.png")
  )
 
  (action
   (name "right")
   (fps 6)
-  (x-offset 0)
-  (y-offset 40)
+  (hitbox 0 40 0 0)
   (mirror-action "left")
  )
 
  (action
   (name "stand")
-  (x-offset 0)
-  (y-offset 40)
+  (hitbox 0 40 0 0)
   (images "stand.png"))
 
  (action
   (name "throw")
   (fps 6)
-  (x-offset 0)
-  (y-offset 40)
+  (hitbox 0 40 0 0)
   (images "throw.png"))
 
  (action
   (name "jump")
-  (x-offset 0)
-  (y-offset 40)
+  (hitbox 0 40 0 0)
   (images "jump.png"))
 
  (action
   (name "dead")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "dead.png")
  )
 )
diff --git a/data/images/creatures/fish/fish.sprite b/data/images/creatures/fish/fish.sprite
index 4b2684a32..ea9d3ab9c 100644
--- a/data/images/creatures/fish/fish.sprite
+++ b/data/images/creatures/fish/fish.sprite
@@ -1,27 +1,23 @@
 (supertux-sprite
  (action
   (name "normal")
-  (x-offset 2)
-  (y-offset 3)
+  (hitbox 2 3 0 0)
   (images "left-0.png"
           "left-1.png"))
 
  (action
   (name "down")
-  (x-offset 2)
-  (y-offset 11)
+  (hitbox 2 11 0 0)
   (images "down.png"))
 
  (action
   (name "iced")
-  (x-offset 2)
-  (y-offset 3)
+  (hitbox 2 3 0 0)
   (images "iced-left.png"))
 
  (action
   (name "iced-down")
-  (x-offset 2)
-  (y-offset 11)
+  (hitbox 2 11 0 0)
   (images "iced-down.png"))
 )
 
diff --git a/data/images/creatures/flame_fish/flame_fish.sprite b/data/images/creatures/flame_fish/flame_fish.sprite
index fdacd299d..69ff2ab9d 100644
--- a/data/images/creatures/flame_fish/flame_fish.sprite
+++ b/data/images/creatures/flame_fish/flame_fish.sprite
@@ -1,15 +1,13 @@
 (sprite
  (action
   (name "normal")
-  (x-offset 2)
-  (y-offset 3)
+  (hitbox 2 3 0 0)
   (images "left-0.png"
           "left-1.png"))
 
  (action
   (name "down")
-  (x-offset 2)
-  (y-offset 11)
+  (hitbox 2 11 0 0)
   (images "down.png"))
 )
 
diff --git a/data/images/creatures/flying_snowball/flying_snowball.sprite b/data/images/creatures/flying_snowball/flying_snowball.sprite
index b92efbf22..390ac5a5c 100644
--- a/data/images/creatures/flying_snowball/flying_snowball.sprite
+++ b/data/images/creatures/flying_snowball/flying_snowball.sprite
@@ -1,26 +1,22 @@
 (supertux-sprite
  (action
   (name "left")
-  (x-offset 4)
-  (y-offset 3)
+  (hitbox 4 3 0 0)
   (images "left-0.png"
           "left-1.png"))
  
  (action
   (name "right")
-  (x-offset 4)
-  (y-offset 3)
+  (hitbox 4 3 0 0)
   (mirror-action "left"))
 
  (action
   (name "squished-left")
-  (x-offset 4)
-  (y-offset -12)
+  (hitbox 4 --12 0 0)
   (images "squished-left.png"))
 
  (action
   (name "squished-right")
-  (x-offset 4)
-  (y-offset -12)
+  (hitbox 4 --12 0 0)
   (mirror-action "squished-left"))
 )
diff --git a/data/images/creatures/jumpy/jumpy.sprite b/data/images/creatures/jumpy/jumpy.sprite
index 507f015f0..8b881fd9b 100644
--- a/data/images/creatures/jumpy/jumpy.sprite
+++ b/data/images/creatures/jumpy/jumpy.sprite
@@ -2,50 +2,42 @@
 
  (action
   (name "left-up")
-  (x-offset 7)
-  (y-offset 8)
+  (hitbox 7 8 0 0)
   (images "left-up.png"))
  
  (action
   (name "right-up")
-  (x-offset 7)
-  (y-offset 8)
+  (hitbox 7 8 0 0)
   (mirror-action "left-up"))
  
  (action
   (name "left-down")
-  (x-offset 7)
-  (y-offset 8)
+  (hitbox 7 8 0 0)
   (images "left-down.png"))
  
  (action
   (name "right-down")
-  (x-offset 7)
-  (y-offset 8)
+  (hitbox 7 8 0 0)
   (mirror-action "left-down"))
  
  (action
   (name "left-middle")
-  (x-offset 7)
-  (y-offset 8)
+  (hitbox 7 8 0 0)
   (images "left-middle.png"))
  
  (action
   (name "right-middle")
-  (x-offset 7)
-  (y-offset 8)
+  (hitbox 7 8 0 0)
   (mirror-action "left-middle"))
  
  (action
   (name "left-iced")
-  (x-offset 7)
-  (y-offset 8)
+  (hitbox 7 8 0 0)
   (images "iced-left-up.png"))
  
  (action
   (name "right-iced")
-  (x-offset 7)
-  (y-offset 8)
+  (hitbox 7 8 0 0)
   (mirror-action "left-iced"))
 )
 
diff --git a/data/images/creatures/kugelblitz/kugelblitz.sprite b/data/images/creatures/kugelblitz/kugelblitz.sprite
index 5d894ec92..6f8d560be 100644
--- a/data/images/creatures/kugelblitz/kugelblitz.sprite
+++ b/data/images/creatures/kugelblitz/kugelblitz.sprite
@@ -1,24 +1,21 @@
 (supertux-sprite
  (action
   (name "falling")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "falling-0.png"
           "falling-1.png"
           "falling-2.png"))
  
  (action
   (name "flying")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "flying-0.png"
           "flying-1.png"
           "flying-2.png"))
 
  (action
   (name "pop")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (fps 20)
   (images "pop-0.png"
           "pop-1.png"
diff --git a/data/images/creatures/mr_bomb/bomb.sprite b/data/images/creatures/mr_bomb/bomb.sprite
index 946564bf4..18c98ab3b 100644
--- a/data/images/creatures/mr_bomb/bomb.sprite
+++ b/data/images/creatures/mr_bomb/bomb.sprite
@@ -3,23 +3,20 @@
  (action
   (name "ticking-left")
   (fps 15.0)
-  (x-offset 3)
-  (y-offset 8)
+  (hitbox 3 8 0 0)
   (images "exploding-left-0.png"
           "exploding-left-1.png"))
  
  (action
   (name "ticking-right")
   (fps 15.0)
-  (x-offset 10)
-  (y-offset 8)
+  (hitbox 10 8 0 0)
   (mirror-action "ticking-left"))
  
  (action
   (name "explosion")
   (fps 15.0)
-  (x-offset 32)
-  (y-offset 32)
+  (hitbox 32 32 0 0)
   (images "explosion-0.png"
           "explosion-1.png"))
 )
diff --git a/data/images/creatures/mr_bomb/mr_bomb.sprite b/data/images/creatures/mr_bomb/mr_bomb.sprite
index 9d2251a3d..a590af20c 100644
--- a/data/images/creatures/mr_bomb/mr_bomb.sprite
+++ b/data/images/creatures/mr_bomb/mr_bomb.sprite
@@ -2,8 +2,7 @@
  (action
   (name "left")
   (fps 10.0)
-  (x-offset 3)
-  (y-offset 12)
+  (hitbox 3 12 0 0)
   (images "left-0.png"
           "left-1.png"
           "left-2.png"
@@ -12,20 +11,17 @@
  (action
   (name "right")
   (fps 10.0)
-  (x-offset 7)
-  (y-offset 12)
+  (hitbox 7 12 0 0)
   (mirror-action "left"))
  
  (action
   (name "iced-left")
-  (x-offset 3)
-  (y-offset 12)
+  (hitbox 3 12 0 0)
   (images "iced-left.png"))
  
  (action
   (name "iced-right")
-  (x-offset 7)
-  (y-offset 12)
+  (hitbox 7 12 0 0)
   (mirror-action "iced-left"))
 )
 
diff --git a/data/images/creatures/mr_iceblock/mr_iceblock.sprite b/data/images/creatures/mr_iceblock/mr_iceblock.sprite
index 69e659fee..37e04518c 100644
--- a/data/images/creatures/mr_iceblock/mr_iceblock.sprite
+++ b/data/images/creatures/mr_iceblock/mr_iceblock.sprite
@@ -1,34 +1,28 @@
 (supertux-sprite
 	(action
 	  (name "left")
-	  (x-offset 2)
-	  (y-offset 3)
+	  (hitbox 2 3 0 0)
 	  (images "left-0.png"
 		  "left-1.png"
 		  "left-2.png"
 		  "left-1.png"))
 
 	(action (name "right")
-		(x-offset 2)
-		(y-offset 3)
+		(hitbox 2 3 0 0)
 		(mirror-action "left"))
 
 	(action (name "falling-left")
-		(x-offset 2)
-		(y-offset 3)
+		(hitbox 2 3 0 0)
 		(images "flat-left.png"))
 
 	(action (name "falling-right")
-		(x-offset 2)
-		(y-offset 3)
+		(hitbox 2 3 0 0)
 		(mirror-action "falling-left"))
 
 	(action (name "flat-left")
-		(x-offset 2)
-		(y-offset 3)
+		(hitbox 2 3 0 0)
 		(images "flat-left.png"))
 
 	(action (name "flat-right")
-		(x-offset 2)
-		(y-offset 3)
+		(hitbox 2 3 0 0)
 		(mirror-action "falling-left")))
diff --git a/data/images/creatures/mr_rocket/explosion.sprite b/data/images/creatures/mr_rocket/explosion.sprite
index 3b41d7fed..d7004d1c2 100644
--- a/data/images/creatures/mr_rocket/explosion.sprite
+++ b/data/images/creatures/mr_rocket/explosion.sprite
@@ -2,16 +2,14 @@
  (action
   (name "explosion-left")
   (fps 15.0)
-  (x-offset 0)
-  (y-offset 32)
+  (hitbox 0 32 0 0)
   (images "explosion-0.png"
    "explosion-1.png")
  )
  (action
   (name "explosion-right")
   (fps 15.0)
-  (x-offset 0)
-  (y-offset 32)
+  (hitbox 0 32 0 0)
   (mirror-action "explosion-left")
  )
 )
diff --git a/data/images/creatures/mr_rocket/mr_rocket.sprite b/data/images/creatures/mr_rocket/mr_rocket.sprite
index 00ea9b1ff..b44050479 100644
--- a/data/images/creatures/mr_rocket/mr_rocket.sprite
+++ b/data/images/creatures/mr_rocket/mr_rocket.sprite
@@ -2,8 +2,7 @@
  (action
   (name "left")
   (fps 15.0)
-  (x-offset 3)
-  (y-offset 12)
+  (hitbox 3 12 0 0)
   (images "flying-0.png"
    "flying-1.png"
    "flying-2.png"
@@ -13,34 +12,29 @@
  (action
   (name "right")
   (fps 10.0)
-  (x-offset 7)
-  (y-offset 12)
+  (hitbox 7 12 0 0)
   (mirror-action "left")
  )
 
  (action
   (name "squished-left")
-  (x-offset 7)
-  (y-offset 0)
+  (hitbox 7 0 0 0)
   (images "squished.png")
  )
 
  (action
   (name "squished-right")
-  (x-offset 7)
-  (y-offset 0)
+  (hitbox 7 0 0 0)
   (mirror-action "squished-left"))
 
  (action
   (name "collision-left")
-  (x-offset 3)
-  (y-offset 12)
+  (hitbox 3 12 0 0)
   (images "collision.png"))
 
  (action
   (name "collision-right")
-  (x-offset 3)
-  (y-offset 12)
+  (hitbox 3 12 0 0)
   (mirror-action "squished-left")
  )
 )
diff --git a/data/images/creatures/mr_tree/mr_tree.sprite b/data/images/creatures/mr_tree/mr_tree.sprite
index e6359bb9c..cfdf7d19c 100644
--- a/data/images/creatures/mr_tree/mr_tree.sprite
+++ b/data/images/creatures/mr_tree/mr_tree.sprite
@@ -1,6 +1,6 @@
 (supertux-sprite
  (action
-  (y-offset -2)
+  (hitbox 0 -2 84.8 84.8)
   (name "large-left")
   (images "walk-left-1.png"
           "walk-left-2.png"
@@ -11,13 +11,12 @@
 )
  )
  (action
-  (y-offset -2)
+  (hitbox 0 -2 84.8 84.8)
   (name "large-right")
   (mirror-action "large-left")
  )
  (action
-  (x-offset 20)
-  (y-offset 23)
+  (hitbox 20 23 42 62)
   (name "small-left")
   (images "small-left-1.png"
           "small-left-2.png"
@@ -29,20 +28,17 @@
 )
  )
   (action
-   (x-offset 20)
-   (y-offset 23)
+   (hitbox 20 23 42 62)
    (name "small-right")
    (mirror-action "small-left")
   )
   (action
-   (x-offset 20)
-   (y-offset 23)
+   (hitbox 20 23 42 42)
    (name "squished-left")
    (images "squished-left.png")
   )
   (action
-   (x-offset 20)
-   (y-offset 23)
+   (hitbox 20 23 42 42)
    (name "squished-right")
    (mirror-action "squished-left")
   )
diff --git a/data/images/creatures/nolok/nolok.sprite b/data/images/creatures/nolok/nolok.sprite
index f9be99064..dab1801dd 100644
--- a/data/images/creatures/nolok/nolok.sprite
+++ b/data/images/creatures/nolok/nolok.sprite
@@ -2,8 +2,7 @@
  (action
   (name "left")
   (fps 6)
-  (x-offset 0)
-  (y-offset 40)
+  (hitbox 0 40 0 0)
   (images "walk-0.png"
           "walk-1.png"
 "walk-2.png"
@@ -15,31 +14,27 @@
  (action
   (name "right")
   (fps 6)
-  (x-offset 0)
-  (y-offset 40)
+  (hitbox 0 40 0 0)
   (mirror-action "left")
  )
          
  (action
   (name "stand")
-  (x-offset 0)
-  (y-offset 40)
+  (hitbox 0 40 0 0)
   (images "walk-0.png")
  )
          
  (action
   (name "throw")
   (fps 6)
-  (x-offset 0)
-  (y-offset 40)
+  (hitbox 0 40 0 0)
   (images "jump-0.png"
           )
  )
 
  (action
   (name "jump")
-  (x-offset 0)
-  (y-offset 40)
+  (hitbox 0 40 0 0)
   (images "jump-0.png"
 "jump-1.png"
 )
@@ -47,8 +42,7 @@
          
  (action
   (name "dead")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "throw-0.png")
  )
 )
diff --git a/data/images/creatures/plant/plant.sprite b/data/images/creatures/plant/plant.sprite
index 159a0a126..36b54aaf9 100644
--- a/data/images/creatures/plant/plant.sprite
+++ b/data/images/creatures/plant/plant.sprite
@@ -1,41 +1,34 @@
 (supertux-sprite
  (action
   (name "left")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (images "left-0.png"
    "left-1.png"
    "left-2.png"))
  (action
   (name "right")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (mirror-action "left"))
  (action
   (name "iced-left")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (images "iced-left.png"))
  (action
   (name "iced-right")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (mirror-action "iced-left")
  )
  (action
   (name "sleeping-left")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (images "sleeping-left.png"))
  (action
   (name "sleeping-right")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (mirror-action "sleeping-left"))
  (action
   (name "waking-left")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (fps 6.0)
   (images "waking-left-0.png"
    "waking-left-1.png"
@@ -43,7 +36,6 @@
  (action
   (name "waking-right")
   (fps 6.0)
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (mirror-action "waking-left"))
 )
diff --git a/data/images/creatures/poison_ivy/poison_ivy.sprite b/data/images/creatures/poison_ivy/poison_ivy.sprite
index 12247aa87..9a46d1dea 100644
--- a/data/images/creatures/poison_ivy/poison_ivy.sprite
+++ b/data/images/creatures/poison_ivy/poison_ivy.sprite
@@ -1,27 +1,23 @@
 (supertux-sprite
  (action
   (name "left")
-  (x-offset 2)
-  (y-offset 4)
+  (hitbox 2 4 0 0)
   (images "left-0.png"
    "left-1.png"
    "left-2.png"))
 
  (action
   (name "right")
-  (x-offset 2)
-  (y-offset 4)
+  (hitbox 2 4 0 0)
   (mirror-action "left"))
  (action
   (name "squished-left")
-  (x-offset 0)
-  (y-offset 3)
+  (hitbox 0 3 0 0)
   (images "squished.png"))
 
  (action
   (name "squished-right")
-  (x-offset 0)
-  (y-offset 3)
+  (hitbox 0 3 0 0)
   (mirror-action "squished-left")
  )
 )
diff --git a/data/images/creatures/skullyhop/skullyhop.sprite b/data/images/creatures/skullyhop/skullyhop.sprite
index 78e4212db..27bc4da41 100644
--- a/data/images/creatures/skullyhop/skullyhop.sprite
+++ b/data/images/creatures/skullyhop/skullyhop.sprite
@@ -1,44 +1,36 @@
 (supertux-sprite
 	(action
 	  (name "standing-left")
-	  (x-offset 0)
-	  (y-offset 0)
+	  (hitbox 0 0 0 0)
 	  (images "standing-0.png"))
 	(action
 	  (name "standing-right")
-	  (x-offset 0)
-	  (y-offset 0)
+	  (hitbox 0 0 0 0)
 	  (mirror-action "standing-left"))
 	(action
 	  (name "charging-left")
-	  (x-offset 0)
-	  (y-offset 0)
+	  (hitbox 0 0 0 0)
 	  (fps 10.0)
 	  (images "charging-0.png"
 		  "charging-1.png"))
 	(action
 	  (name "charging-right")
 	  (fps 10.0)
-	  (x-offset 0)
-	  (y-offset 0)
+	  (hitbox 0 0 0 0)
 	  (mirror-action "charging-left"))
 	(action
 	  (name "jumping-left")
-	  (x-offset 0)
-	  (y-offset 0)
+	  (hitbox 0 0 0 0)
 	  (images "jumping-0.png"))
 	(action
 	  (name "jumping-right")
-	  (x-offset 0)
-	  (y-offset 0)
+	  (hitbox 0 0 0 0)
 	  (mirror-action "jumping-left"))
 	(action
 	  (name "squished-left")
-	  (x-offset 0)
-	  (y-offset -14)
+	  (hitbox 0 --14 0 0)
 	  (images "squished-0.png"))
 	(action
 	  (name "squished-right")
-	  (x-offset 0)
-	  (y-offset -14)
+	  (hitbox 0 --14 0 0)
 	  (mirror-action "squished-left")))
diff --git a/data/images/creatures/snail/snail.sprite b/data/images/creatures/snail/snail.sprite
index 83aff2003..b03b31e0e 100644
--- a/data/images/creatures/snail/snail.sprite
+++ b/data/images/creatures/snail/snail.sprite
@@ -1,21 +1,18 @@
 (supertux-sprite
 	(action
 	  (name "left")
-	  (x-offset 2)
-	  (y-offset 3)
+	  (hitbox 2 3 0 0)
 	  (images "snowsnail1.png"
 		  "snowsnail2.png"
 		  "snowsnail3.png"
 		  ))
 
 	(action (name "right")
-		(x-offset 2)
-		(y-offset 3)
+		(hitbox 2 3 0 0)
 		(mirror-action "left"))
 
 	(action (name "falling-left")
-		(x-offset 2)
-		(y-offset 3)
+		(hitbox 2 3 0 0)
 		(images "snowsnail_flip1.png"
 			"snowsnail_flip2.png"
 			"snowsnail_flip3.png"
@@ -26,13 +23,11 @@
 			))
 
 	(action (name "falling-right")
-		(x-offset 2)
-		(y-offset 3)
+		(hitbox 2 3 0 0)
 		(mirror-action "falling-left"))
 
 	(action (name "flat-left")
-		(x-offset 2)
-		(y-offset 3)
+		(hitbox 2 3 0 0)
 		(images "snowsnail_flip1.png"
 			"snowsnail_flip2.png"
 			"snowsnail_flip3.png"
@@ -43,6 +38,5 @@
 			))
 
 	(action (name "flat-right")
-		(x-offset 2)
-		(y-offset 3)
+		(hitbox 2 3 0 0)
 		(mirror-action "falling-left")))
diff --git a/data/images/creatures/snowball/snowball.sprite b/data/images/creatures/snowball/snowball.sprite
index f6249e032..a3081cc74 100644
--- a/data/images/creatures/snowball/snowball.sprite
+++ b/data/images/creatures/snowball/snowball.sprite
@@ -1,28 +1,24 @@
 (supertux-sprite
   (action
     (name "left")
-    (x-offset 2)
-    (y-offset 4)
+    (hitbox 2 4 0 0)
     (images "left-0.png"
             "left-1.png"
             "left-2.png")
   )
   (action
     (name "right")
-    (x-offset 2)
-    (y-offset 4)
+    (hitbox 2 4 0 0)
     (mirror-action "left")
   )
   (action
     (name "squished-left")
-    (x-offset 1)
-    (y-offset -19)
+    (hitbox 1 --19 0 0)
     (images "squished-left.png")
   )
   (action
     (name "squished-right")
-    (x-offset 1)
-    (y-offset -19)
+    (hitbox 1 --19 0 0)
     (mirror-action "squished-left")
   )
 )
diff --git a/data/images/creatures/spidermite/spidermite.sprite b/data/images/creatures/spidermite/spidermite.sprite
index 4d02d44f4..d57404825 100644
--- a/data/images/creatures/spidermite/spidermite.sprite
+++ b/data/images/creatures/spidermite/spidermite.sprite
@@ -1,25 +1,21 @@
 (supertux-sprite
 	(action
 	  (name "left")
-	  (x-offset 4)
-	  (y-offset 3)
+	  (hitbox 4 3 0 0)
 	  (images "spidermite.png"
 		  "spidermite0.png"
 		  "spidermite1.png"
 		  "spidermite0.png"))
 	(action
 	  (name "right")
-	  (x-offset 4)
-	  (y-offset 3)
+	  (hitbox 4 3 0 0)
 	  (mirror-action "left"))
 
 	(action
 	  (name "squished-left")
-	  (x-offset 4)
-	  (y-offset -12)
+	  (hitbox 4 --12 0 0)
 	  (images "spidermite-squish.png"))
 	(action
 	  (name "squished-right")
-	  (x-offset 4)
-	  (y-offset -12)
+	  (hitbox 4 --12 0 0)
 	  (mirror-action "squished-left")))
diff --git a/data/images/creatures/spiky/sleepingspiky.sprite b/data/images/creatures/spiky/sleepingspiky.sprite
index 159a0a126..36b54aaf9 100644
--- a/data/images/creatures/spiky/sleepingspiky.sprite
+++ b/data/images/creatures/spiky/sleepingspiky.sprite
@@ -1,41 +1,34 @@
 (supertux-sprite
  (action
   (name "left")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (images "left-0.png"
    "left-1.png"
    "left-2.png"))
  (action
   (name "right")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (mirror-action "left"))
  (action
   (name "iced-left")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (images "iced-left.png"))
  (action
   (name "iced-right")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (mirror-action "iced-left")
  )
  (action
   (name "sleeping-left")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (images "sleeping-left.png"))
  (action
   (name "sleeping-right")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (mirror-action "sleeping-left"))
  (action
   (name "waking-left")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (fps 6.0)
   (images "waking-left-0.png"
    "waking-left-1.png"
@@ -43,7 +36,6 @@
  (action
   (name "waking-right")
   (fps 6.0)
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (mirror-action "waking-left"))
 )
diff --git a/data/images/creatures/spiky/spiky.sprite b/data/images/creatures/spiky/spiky.sprite
index 07b114fc9..6b2bafcd9 100644
--- a/data/images/creatures/spiky/spiky.sprite
+++ b/data/images/creatures/spiky/spiky.sprite
@@ -1,25 +1,21 @@
 (supertux-sprite
  (action
   (name "left")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (images "left-0.png"
    "left-1.png"
    "left-2.png"))
  (action
   (name "right")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (mirror-action "left"))
  (action
   (name "iced-left")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (images "iced-left.png"))
  (action
   (name "iced-right")
-  (x-offset 6)
-  (y-offset 10)
+  (hitbox 6 10 0 0)
   (mirror-action "iced-left")
  )
 )
diff --git a/data/images/creatures/stalactite/stalactite.sprite b/data/images/creatures/stalactite/stalactite.sprite
index cc3034efb..ec258ade3 100644
--- a/data/images/creatures/stalactite/stalactite.sprite
+++ b/data/images/creatures/stalactite/stalactite.sprite
@@ -1,11 +1,9 @@
 (supertux-sprite
 	(action
 	  (name "normal")
-	  (x-offset 0)
-	  (y-offset 0)
+	  (hitbox 0 0 0 0)
 	  (images "falling.png"))
 	(action
 	  (name "squished")
-	  (x-offset 0)
-	  (y-offset 16)
+	  (hitbox 0 16 0 0)
 	  (images "broken.png")))
diff --git a/data/images/creatures/tux_big/big-fire-tux-head.sprite b/data/images/creatures/tux_big/big-fire-tux-head.sprite
index d30bd3527..47c671027 100644
--- a/data/images/creatures/tux_big/big-fire-tux-head.sprite
+++ b/data/images/creatures/tux_big/big-fire-tux-head.sprite
@@ -2,106 +2,90 @@
        (action
          (name "walk-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "head-fire-stand-0.png"))
 
        (action
          (name "walk-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "walk-right"))
 
        (action
          (name "stand-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "head-fire-stand-0.png"))
 
        (action
          (name "stand-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "stand-right"))
 
        (action
          (name "jump-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 30)
+         (hitbox 5 30 0 0)
          (images "head-fire-stand-0.png"))
 
        (action
          (name "jump-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 30)
+         (hitbox 27 30 0 0)
          (mirror-action "jump-right"))
 
        (action
          (name "duck-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 62)
+         (hitbox 5 62 0 0)
          (images "head-fire-duck-0.png"))
 
        (action
          (name "duck-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 62)
+         (hitbox 27 62 0 0)
          (mirror-action "duck-right"))
 
        (action
          (name "skid-right")
-         (x-offset 6)
-         (y-offset 31)
+         (hitbox 6 31 0 0)
          (images "head-fire-skid-0.png"))
 
        (action
          (name "skid-left")
-         (x-offset 27)
-         (y-offset 31)
+         (hitbox 27 31 0 0)
          (mirror-action "skid-right"))
 
        (action
          (name "kick-right")
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "head-fire-stand-0.png"))
 
        (action
          (name "kick-left")
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "kick-right"))
 
        (action
          (name "buttjump-right")
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "head-fire-stand-0.png"))
 
        (action
          (name "buttjump-left")
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "buttjump-right"))
 
        (action
          (name "idle-right")
          (fps 1.0)
-         (x-offset 6)
-         (y-offset 31)
+         (hitbox 6 31 0 0)
          (images "head-idle-blink-0.png"
                  "head-idle-blink-1.png"))
 
        (action
          (name "idle-left")
          (fps 1.0)
-         (x-offset 27)
-         (y-offset 31)
+         (hitbox 27 31 0 0)
          (mirror-action "idle-right")))
diff --git a/data/images/creatures/tux_big/big-tux-arms.sprite b/data/images/creatures/tux_big/big-tux-arms.sprite
index a79f2a046..d31242552 100644
--- a/data/images/creatures/tux_big/big-tux-arms.sprite
+++ b/data/images/creatures/tux_big/big-tux-arms.sprite
@@ -2,8 +2,7 @@
        (action
          (name "walk-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "arms-walk-0.png"
                  "arms-walk-1.png"
                  "arms-walk-2.png"
@@ -14,112 +13,95 @@
        (action
          (name "walk-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "walk-right"))
 
        (action
          (name "stand-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "arms-stand-0.png"))
 
        (action
          (name "stand-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "stand-right"))
 
        (action
          (name "jump-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 30)
+         (hitbox 5 30 0 0)
          (images "arms-jump-0.png"))
 
        (action
          (name "jump-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 30)
+         (hitbox 27 30 0 0)
          (mirror-action "jump-right"))
 
        (action
          (name "duck-right")
-         (x-offset 5)
-         (y-offset 62)
+         (hitbox 5 62 0 0)
          (images "arms-duck-0.png"))
 
        (action
          (name "duck-left")
-         (x-offset 27)
-         (y-offset 62)
+         (hitbox 27 62 0 0)
          (mirror-action "duck-right"))
 
        (action
          (name "skid-right")
-         (x-offset 6)
-         (y-offset 31)
+         (hitbox 6 31 0 0)
          (images "arms-skid-0.png"))
 
        (action
          (name "skid-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 31)
+         (hitbox 27 31 0 0)
          (mirror-action "skid-right"))
 
        (action
          (name "kick-right")
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "arms-stand-0.png"))
 
        (action
          (name "kick-left")
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "kick-right"))
 
        (action
          (name "buttjump-right")
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "arms-stand-0.png"))
 
        (action
          (name "buttjump-left")
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "buttjump-right"))
 
 ; Grabbing is arms specific!
        (action 
          (name "grab-right")
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (z-order 2)
          (images "arms-grab-0.png"))
 
        (action
          (name "grab-left")
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (z-order 2)
          (mirror-action "grab-right"))
 
        (action
          (name "duck+grab-right")
-         (x-offset 5)
-         (y-offset 62)
+         (hitbox 5 62 0 0)
          (z-order 2)
          (images "arms-duck+grab-0.png"))
 
        (action
          (name "duck+grab-left")
-         (x-offset 27)
-         (y-offset 62)
+         (hitbox 27 62 0 0)
          (z-order 2)
          (mirror-action "duck+grab-right")))
diff --git a/data/images/creatures/tux_big/big-tux-body.sprite b/data/images/creatures/tux_big/big-tux-body.sprite
index ea9b4126c..8d8cd09c6 100644
--- a/data/images/creatures/tux_big/big-tux-body.sprite
+++ b/data/images/creatures/tux_big/big-tux-body.sprite
@@ -2,94 +2,80 @@
        (action
          (name "walk-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "body-stand-0.png"))
 
        (action
          (name "walk-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "walk-right"))
 
        (action
          (name "stand-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "body-stand-0.png"))
 
        (action
          (name "stand-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "stand-right"))
 
        (action
          (name "jump-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 30)
+         (hitbox 5 30 0 0)
          (images "body-stand-0.png"))
 
        (action
          (name "jump-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 30)
+         (hitbox 27 30 0 0)
          (mirror-action "jump-right"))
 
        (action
          (name "duck-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 62)
+         (hitbox 5 62 0 0)
          (images "body-duck-0.png"))
 
        (action
          (name "duck-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 62)
+         (hitbox 27 62 0 0)
          (mirror-action "duck-right"))
 
        (action
          (name "skid-right")
-         (x-offset 6)
-         (y-offset 31)
+         (hitbox 6 31 0 0)
          (images "body-skid-0.png"))
 
        (action
          (name "skid-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 31)
+         (hitbox 27 31 0 0)
          (mirror-action "skid-right"))
 
        (action
          (name "kick-right")
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "body-stand-0.png"))
 
        (action
          (name "kick-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "kick-right"))
 
        (action
          (name "buttjump-right")
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "body-stand-0.png"))
 
        (action
          (name "buttjump-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "buttjump-right")))
diff --git a/data/images/creatures/tux_big/big-tux-feet.sprite b/data/images/creatures/tux_big/big-tux-feet.sprite
index ace4e1a5c..6c2e94ff6 100644
--- a/data/images/creatures/tux_big/big-tux-feet.sprite
+++ b/data/images/creatures/tux_big/big-tux-feet.sprite
@@ -2,8 +2,7 @@
        (action
          (name "walk-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "feet-walk-0.png"
                  "feet-walk-1.png"
                  "feet-walk-2.png"
@@ -14,84 +13,71 @@
        (action
          (name "walk-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "walk-right"))
 
        (action
          (name "stand-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "feet-stand-0.png"))
 
        (action
          (name "stand-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "stand-right"))
 
        (action
          (name "jump-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 30)
+         (hitbox 5 30 0 0)
          (images "feet-jump-0.png"))
 
        (action
          (name "jump-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 30)
+         (hitbox 27 30 0 0)
          (mirror-action "jump-right"))
 
        (action
          (name "duck-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 62)
+         (hitbox 5 62 0 0)
          (images "feet-duck-0.png"))
 
        (action
          (name "duck-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 62)
+         (hitbox 27 62 0 0)
          (mirror-action "duck-right"))
 
        (action
          (name "skid-right")
-         (x-offset 6)
-         (y-offset 31)
+         (hitbox 6 31 0 0)
          (images "feet-skid-0.png"))
 
        (action
          (name "skid-left")
-         (x-offset 27)
-         (y-offset 31)
+         (hitbox 27 31 0 0)
          (mirror-action "skid-right"))
 
        (action
          (name "kick-right")
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "feet-kick-0.png"))
 
        (action
          (name "kick-left")
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "kick-right"))
 
        (action
          (name "buttjump-right")
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "feet-buttjump-0.png"))
 
        (action
          (name "buttjump-left")
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "buttjump-right")))
diff --git a/data/images/creatures/tux_big/big-tux-head.sprite b/data/images/creatures/tux_big/big-tux-head.sprite
index 5cc7f37a8..cbb0eb385 100644
--- a/data/images/creatures/tux_big/big-tux-head.sprite
+++ b/data/images/creatures/tux_big/big-tux-head.sprite
@@ -2,102 +2,87 @@
        (action
          (name "walk-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "head-stand-0.png"))
 
        (action
          (name "walk-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "walk-right"))
 
        (action
          (name "stand-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "head-stand-0.png"))
 
        (action
          (name "stand-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "stand-right"))
 
        (action
          (name "jump-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 30)
+         (hitbox 5 30 0 0)
          (images "head-stand-0.png"))
 
        (action
          (name "jump-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 30)
+         (hitbox 27 30 0 0)
          (mirror-action "jump-right"))
 
        (action
          (name "duck-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 62)
+         (hitbox 5 62 0 0)
          (images "head-duck-0.png"))
 
        (action
          (name "duck-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 62)
+         (hitbox 27 62 0 0)
          (mirror-action "duck-right"))
 
        (action
          (name "skid-right")
-         (x-offset 6)
-         (y-offset 31)
+         (hitbox 6 31 0 0)
          (images "head-skid-0.png"))
 
        (action
          (name "skid-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 31)
+         (hitbox 27 31 0 0)
          (mirror-action "skid-right"))
 
        (action
          (name "kick-right")
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "head-stand-0.png"))
 
        (action
          (name "kick-left")
          (fps 15.0)
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "kick-right"))
 
        (action
          (name "buttjump-right")
-         (x-offset 5)
-         (y-offset 32)
+         (hitbox 5 32 0 0)
          (images "head-stand-0.png"))
 
        (action
          (name "buttjump-left")
-         (x-offset 27)
-         (y-offset 32)
+         (hitbox 27 32 0 0)
          (mirror-action "buttjump-right"))
 
        (action
          (name "idle-right")
          (fps 1.0)
-         (x-offset 6)
-         (y-offset 31)
+         (hitbox 6 31 0 0)
          (images "head-idle-blink-0.png"
                  "head-idle-blink-1.png"))
 
@@ -105,6 +90,5 @@
        (action
          (name "idle-left")
          (fps 1.0)
-         (x-offset 27)
-         (y-offset 31)
+         (hitbox 27 31 0 0)
          (mirror-action "idle-right")))
diff --git a/data/images/creatures/tux_big/bigtux-star.sprite b/data/images/creatures/tux_big/bigtux-star.sprite
index 791ea566e..c5feeaa46 100644
--- a/data/images/creatures/tux_big/bigtux-star.sprite
+++ b/data/images/creatures/tux_big/bigtux-star.sprite
@@ -1,7 +1,6 @@
 (supertux-sprite
        (action
-         (x-offset 8)
-         (y-offset 8)
+         (hitbox 8 8 0 0)
          (images "extra-star-0.png"
                  "extra-star-1.png"
                  "extra-star-2.png")))
diff --git a/data/images/creatures/tux_small/small-tux-arms.sprite b/data/images/creatures/tux_small/small-tux-arms.sprite
index ec2c1413b..6eb7217b4 100644
--- a/data/images/creatures/tux_small/small-tux-arms.sprite
+++ b/data/images/creatures/tux_small/small-tux-arms.sprite
@@ -2,8 +2,7 @@
        (action
          (name "walk-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (images "arms-walk-0.png"
                  "arms-walk-1.png"
                  "arms-walk-2.png"
@@ -16,74 +15,63 @@
        (action
          (name "walk-left")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (mirror-action "walk-right"))
 
        (action
          (name "stand-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (images "arms-walk-5.png"))
 
        (action
          (name "stand-left")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (mirror-action "stand-right"))
 
        (action
          (name "jump-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (images "arms-jump-0.png"))
 
        (action
          (name "jump-left")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (mirror-action "jump-right"))
 
        (action
          (name "skid-right")
-         (x-offset 6)
-         (y-offset 15)
+         (hitbox 6 15 0 0)
          (images "arms-skid-0.png"))
 
        (action
          (name "skid-left")
          (fps 15.0)
-         (x-offset 6)
-         (y-offset 15)
+         (hitbox 6 15 0 0)
          (mirror-action "skid-right"))
 
        (action
          (name "kick-right")
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (images "arms-kick-0.png"))
 
        (action
          (name "kick-left")
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (mirror-action "kick-right"))
 
 ; Grabbing is arms specific!
        (action 
          (name "grab-right")
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (z-order 2)
          (images "arms-grab-0.png"))
 
        (action
          (name "grab-left")
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (z-order 2)
          (mirror-action "grab-right")))
diff --git a/data/images/creatures/tux_small/small-tux-body.sprite b/data/images/creatures/tux_small/small-tux-body.sprite
index 4ad1e104c..ac43066cd 100644
--- a/data/images/creatures/tux_small/small-tux-body.sprite
+++ b/data/images/creatures/tux_small/small-tux-body.sprite
@@ -2,8 +2,7 @@
        (action
          (name "walk-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (images "body-walk-0.png"
                  "body-walk-1.png"
                  "body-walk-2.png"
@@ -16,58 +15,49 @@
        (action
          (name "walk-left")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (mirror-action "walk-right"))
 
        (action
          (name "stand-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (images "body-walk-5.png"))
 
        (action
          (name "stand-left")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (mirror-action "stand-right"))
 
        (action
          (name "jump-right")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (images "body-jump-0.png"))
 
        (action
          (name "jump-left")
          (fps 15.0)
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (mirror-action "jump-right"))
 
        (action
          (name "skid-right")
-         (x-offset 6)
-         (y-offset 15)
+         (hitbox 6 15 0 0)
          (images "body-skid-0.png"))
 
        (action
          (name "skid-left")
-         (x-offset 6)
-         (y-offset 15)
+         (hitbox 6 15 0 0)
          (mirror-action "skid-right"))
 
        (action
          (name "kick-right")
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (images "body-kick-0.png"))
 
        (action
          (name "kick-left")
-         (x-offset 5)
-         (y-offset 14)
+         (hitbox 5 14 0 0)
          (mirror-action "kick-right")))
diff --git a/data/images/creatures/tux_small/smalltux-gameover.sprite b/data/images/creatures/tux_small/smalltux-gameover.sprite
index 0a96764a8..e44c86126 100644
--- a/data/images/creatures/tux_small/smalltux-gameover.sprite
+++ b/data/images/creatures/tux_small/smalltux-gameover.sprite
@@ -1,7 +1,6 @@
 (supertux-sprite
        (action
          (fps 10.0)
-         (x-offset 13)
-         (y-offset 6)
+         (hitbox 13 6 0 0)
          (images "gameover-0.png"
                  "gameover-1.png")))
diff --git a/data/images/creatures/tux_small/smalltux-star.sprite b/data/images/creatures/tux_small/smalltux-star.sprite
index 97614211f..f363a5071 100644
--- a/data/images/creatures/tux_small/smalltux-star.sprite
+++ b/data/images/creatures/tux_small/smalltux-star.sprite
@@ -1,7 +1,6 @@
 (supertux-sprite
        (action
-         (x-offset 5)
-         (y-offset 15)
+         (hitbox 5 15 0 0)
          (images "extra-star-0.png"
                  "extra-star-1.png"
                  "extra-star-2.png")))
diff --git a/data/images/creatures/yeti/yeti.sprite b/data/images/creatures/yeti/yeti.sprite
index c18790fc7..975146f41 100644
--- a/data/images/creatures/yeti/yeti.sprite
+++ b/data/images/creatures/yeti/yeti.sprite
@@ -2,8 +2,7 @@
   (action
     (name "run-right")
     (fps 4.0)
-    (x-offset 17)
-    (y-offset 12)
+    (hitbox 17 12 0 0)
     (images 
       "y1.png"
       "y2.png"
@@ -18,50 +17,43 @@
     (name "run-left")
     (mirror-action "run-right")
     (fps 4.0)
-    (x-offset 17)
-    (y-offset 12)
+    (hitbox 17 12 0 0)
     )
   (action
     (name "jump-right")
     (images 
       "yeti_jump.png"
       )
-    (x-offset 17)
-    (y-offset 12)
+    (hitbox 17 12 0 0)
     )
   (action
     (name "jump-left")
     (mirror-action "jump-right")
-    (x-offset 17)
-    (y-offset 12)
+    (hitbox 17 12 0 0)
     )
   (action
     (name "stand-right")
     (images 
       "y.png"
       )
-    (x-offset 17)
-    (y-offset 12)
+    (hitbox 17 12 0 0)
     )
   (action
     (name "stand-left")
     (mirror-action "stand-right")
-    (x-offset 17)
-    (y-offset 12)
+    (hitbox 17 12 0 0)
     )
   (action
     (name "stomp-right")
     (images 
       "y-jump.png"
       )
-    (x-offset 17)
-    (y-offset 12)
+    (hitbox 17 12 0 0)
     )
   (action
     (name "stomp-left")
     (mirror-action "stomp-right")
-    (x-offset 17)
-    (y-offset 12)
+    (hitbox 17 12 0 0)
     )
   (action
     (name "dead")
@@ -74,7 +66,6 @@
  "busted2.png"
 
       )
-    (x-offset 300)
-    (y-offset 400)
+    (hitbox 300 400 0 0)
     )
   )
diff --git a/data/images/creatures/zeekling/zeekling.sprite b/data/images/creatures/zeekling/zeekling.sprite
index dccbcbf43..a818c3644 100644
--- a/data/images/creatures/zeekling/zeekling.sprite
+++ b/data/images/creatures/zeekling/zeekling.sprite
@@ -2,36 +2,30 @@
 (supertux-sprite
  (action
   (name "left")
-  (x-offset 2)
-  (y-offset 4)
+  (hitbox 2 4 0 0)
   (images "left-0.png"
    "left-1.png"
    "left-2.png"
    "left-3.png"))
  (action
   (name "right")
-  (x-offset 2)
-  (y-offset 4)
+  (hitbox 2 4 0 0)
   (mirror-action "left"))
  (action
   (name "squished-left")
-  (x-offset 2)
-  (y-offset -19)
+  (hitbox 2 -19 0 0)
   (images "squished.png"))
  (action
   (name "squished-right")
-  (x-offset 2)
-  (y-offset -19)
+  (hitbox 2 -19 0 0)
   (mirror-action "squished-left"))
  (action
   (name "diving-left")
-  (x-offset 2)
-  (y-offset 4)
+  (hitbox 2 4 0 0)
   (images "diving.png"))
  (action
   (name "diving-right")
-  (x-offset 2)
-  (y-offset 4)
+  (hitbox 2 4 0 0)
   (mirror-action "diving-left")
  )
 )
diff --git a/data/images/objects/bullets/firebullet.sprite b/data/images/objects/bullets/firebullet.sprite
index 6224912df..c4381ecbd 100644
--- a/data/images/objects/bullets/firebullet.sprite
+++ b/data/images/objects/bullets/firebullet.sprite
@@ -1,7 +1,6 @@
 (supertux-sprite
  (action
-  (x-offset 12)
-  (x-offset 12)
+  (hitbox 12 12 0 0)
   (fps 20)
   (images "fire_bullet-0.png"
    "fire_bullet-1.png"
diff --git a/data/images/objects/bullets/icebullet.sprite b/data/images/objects/bullets/icebullet.sprite
index 4a2791488..9f7938cfb 100644
--- a/data/images/objects/bullets/icebullet.sprite
+++ b/data/images/objects/bullets/icebullet.sprite
@@ -1,7 +1,6 @@
 (supertux-sprite
  (action
-  (x-offset 12)
-  (x-offset 12)
+  (hitbox 12 12 0 0)
   (fps 20)
   (images "ice_bullet.png")
  )
diff --git a/data/images/objects/castledoor/castledoor.sprite b/data/images/objects/castledoor/castledoor.sprite
index a0c7e1763..d8ff05156 100644
--- a/data/images/objects/castledoor/castledoor.sprite
+++ b/data/images/objects/castledoor/castledoor.sprite
@@ -1,8 +1,7 @@
 (supertux-sprite
  (action
   (name "closed")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
 (fps 4)
   (images "castledoor_0.png"
 ))
diff --git a/data/images/objects/castledoor/keyholes.sprite b/data/images/objects/castledoor/keyholes.sprite
index 251a33a05..18d2d8491 100644
--- a/data/images/objects/castledoor/keyholes.sprite
+++ b/data/images/objects/castledoor/keyholes.sprite
@@ -1,7 +1,6 @@
 (supertux-sprite
  (action
   (name "normal")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "keyholes.png"))
 )
diff --git a/data/images/objects/castledoor/torchflame.sprite b/data/images/objects/castledoor/torchflame.sprite
index c685b575f..cb204afd2 100644
--- a/data/images/objects/castledoor/torchflame.sprite
+++ b/data/images/objects/castledoor/torchflame.sprite
@@ -1,8 +1,7 @@
 (supertux-sprite
  (action
   (name "normal")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
 (fps 4)
   (images 
 
diff --git a/data/images/objects/door/door.sprite b/data/images/objects/door/door.sprite
index 899f5d8c2..1eea8c793 100644
--- a/data/images/objects/door/door.sprite
+++ b/data/images/objects/door/door.sprite
@@ -1,13 +1,11 @@
 (supertux-sprite
  (action
   (name "normal")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "door-0.png"))
  (action
   (name "open")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "door-0.png"
    "door-1.png"
    "door-2.png"
diff --git a/data/images/objects/firefly/firefly.sprite b/data/images/objects/firefly/firefly.sprite
index ddb9caf8a..08dea16f2 100644
--- a/data/images/objects/firefly/firefly.sprite
+++ b/data/images/objects/firefly/firefly.sprite
@@ -1,8 +1,7 @@
 (supertux-sprite
  (action
   (name "normal")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "firefly1.png")
  )
  (action
diff --git a/data/images/objects/hatch/hatch.sprite b/data/images/objects/hatch/hatch.sprite
index e871d68ac..8216ae91e 100644
--- a/data/images/objects/hatch/hatch.sprite
+++ b/data/images/objects/hatch/hatch.sprite
@@ -1,13 +1,11 @@
 (supertux-sprite
        (action
           (name "normal")
-          (x-offset 0)
-          (y-offset 0)
+          (hitbox 0 0 0 0)
           (images "hatch-0.png"))
        (action
           (name "open")
-          (x-offset 0)
-          (y-offset 0)
+          (hitbox 0 0 0 0)
           (images "hatch-0.png"
                   "hatch-1.png"
                   "hatch-2.png"
diff --git a/data/images/objects/icecube/icecube.sprite b/data/images/objects/icecube/icecube.sprite
index 0d626ea86..35f9c134d 100644
--- a/data/images/objects/icecube/icecube.sprite
+++ b/data/images/objects/icecube/icecube.sprite
@@ -1,8 +1,7 @@
 (supertux-sprite
   (action
   (name "normal")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
 (fps 5)
   (images 
 "icecube.png"
diff --git a/data/images/objects/particles/stomp.sprite b/data/images/objects/particles/stomp.sprite
index 4f556d9f0..3df371ea2 100644
--- a/data/images/objects/particles/stomp.sprite
+++ b/data/images/objects/particles/stomp.sprite
@@ -1,7 +1,6 @@
 (supertux-sprite
  (action
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "stomp.png")
  )
 )
diff --git a/data/images/objects/radio/radio.sprite b/data/images/objects/radio/radio.sprite
index 5499a6650..a3fb538af 100644
--- a/data/images/objects/radio/radio.sprite
+++ b/data/images/objects/radio/radio.sprite
@@ -1,13 +1,11 @@
 (supertux-sprite
  (action
   (name "quiet")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "radio1.png"))
  (action
   (name "loud")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "radio1.png"
    "radio2.png"
    "radio3.png")
diff --git a/data/images/objects/trampoline/trampoline.sprite b/data/images/objects/trampoline/trampoline.sprite
index 4b9e58d9b..ede16f97d 100644
--- a/data/images/objects/trampoline/trampoline.sprite
+++ b/data/images/objects/trampoline/trampoline.sprite
@@ -1,8 +1,7 @@
 (supertux-sprite
  (action
   (name "normal")
-  (x-offset 0)
-  (y-offset 0)
+  (hitbox 0 0 0 0)
   (images "trampoline1-0.png"
    "trampoline1-1.png"
    "trampoline1-2.png"
diff --git a/data/images/worldmap/common/leveldot.sprite b/data/images/worldmap/common/leveldot.sprite
index 03a4ae697..afa203b57 100644
--- a/data/images/worldmap/common/leveldot.sprite
+++ b/data/images/worldmap/common/leveldot.sprite
@@ -1,14 +1,12 @@
 (supertux-sprite
   (action
     (name "default")
-    (x-offset 16)
-    (y-offset 16)
+    (hitbox 16 16 0 0)
     (images "leveldot_red.png")
   )
   (action
     (name "solved")
-    (x-offset 16)
-    (y-offset 16)
+    (hitbox 16 16 0 0)
     (images "leveldot_green.png")
   )
 )
diff --git a/data/images/worldmap/common/n_stone.sprite b/data/images/worldmap/common/n_stone.sprite
index 1819cecfb..70db62e43 100644
--- a/data/images/worldmap/common/n_stone.sprite
+++ b/data/images/worldmap/common/n_stone.sprite
@@ -1,14 +1,12 @@
 (supertux-sprite
   (action
     (name "default")
-    (x-offset 16)
-    (y-offset 16)
+    (hitbox 16 16 0 0)
     (images "n_stone.png")
   )
   (action
     (name "solved")
-    (x-offset 16)
-    (y-offset 16)
+    (hitbox 16 16 0 0)
     (images "n_stone.png")
   )
 )
diff --git a/data/images/worldmap/common/shroom.sprite b/data/images/worldmap/common/shroom.sprite
index a2b0f8ff4..5ed151bea 100644
--- a/data/images/worldmap/common/shroom.sprite
+++ b/data/images/worldmap/common/shroom.sprite
@@ -1,8 +1,7 @@
 (supertux-sprite
   (action
     (name "default")
-    (x-offset 16)
-    (y-offset 16)
+    (hitbox 16 16 0 0)
     (images "shroom.png"
 "shroom1.png"
 "shroom2.png"
@@ -20,8 +19,7 @@
   )
   (action
     (name "solved")
-    (x-offset 16)
-    (y-offset 16)
+    (hitbox 16 16 0 0)
     (images "level_star.png"
 "level_star1.png"
 "level_star1.png"
diff --git a/data/images/worldmap/common/teleporterdot.sprite b/data/images/worldmap/common/teleporterdot.sprite
index 3bf9e0581..e1ce38520 100644
--- a/data/images/worldmap/common/teleporterdot.sprite
+++ b/data/images/worldmap/common/teleporterdot.sprite
@@ -1,8 +1,7 @@
 (supertux-sprite
   (action
     (name "default")
-    (x-offset 16)
-    (y-offset 16)
+    (hitbox 16 16 0 0)
     (fps 3)
     (images "teleporterdot_1.png"
 	    "teleporterdot_2.png"
diff --git a/data/images/worldmap/common/torch.sprite b/data/images/worldmap/common/torch.sprite
index c6c283864..e23492ee8 100644
--- a/data/images/worldmap/common/torch.sprite
+++ b/data/images/worldmap/common/torch.sprite
@@ -1,8 +1,7 @@
 (supertux-sprite
   (action
     (name "default")
-    (x-offset 16)
-    (y-offset 16)
+    (hitbox 16 16 0 0)
 (fps 6)
     (images "torch.png"
 
@@ -16,8 +15,7 @@
   )
   (action
     (name "solved")
-    (x-offset 16)
-    (y-offset 16)
+    (hitbox 16 16 0 0)
 (fps 1)
     (images "smoke1.png"
 "smoke2.png"
diff --git a/data/images/worldmap/common/torch1.sprite b/data/images/worldmap/common/torch1.sprite
index bb1f1148e..afc766816 100644
--- a/data/images/worldmap/common/torch1.sprite
+++ b/data/images/worldmap/common/torch1.sprite
@@ -1,8 +1,7 @@
 (supertux-sprite
   (action
     (name "default")
-    (x-offset 16)
-    (y-offset 16)
+    (hitbox 16 16 0 0)
 (fps 6)
     (images "torch.png"
 "torch.png"
@@ -16,8 +15,7 @@
   )
   (action
     (name "solved")
-    (x-offset 16)
-    (y-offset 16)
+    (hitbox 16 16 0 0)
 (fps 1)
     (images "smoke1.png"
 "smoke2.png"
diff --git a/data/images/worldmap/common/tux.sprite b/data/images/worldmap/common/tux.sprite
index a8baa1254..4ac6a318e 100644
--- a/data/images/worldmap/common/tux.sprite
+++ b/data/images/worldmap/common/tux.sprite
@@ -1,14 +1,12 @@
 (supertux-sprite
  (action
   (name "small-stop")
-  (x-offset 5)
-  (y-offset 20)
+  (hitbox 5 20 0 0)
   (images "smalltux.png")
  )
  (action
   (name "small-walking")
-  (x-offset 5)
-  (y-offset 20)
+  (hitbox 5 20 0 0)
   (images "smalltux.png"
 "smalltux1.png"
 "smalltux2.png"
@@ -30,22 +28,22 @@
  )
  (action
   (name "large-walking")
-  (y-offset 10)
+  (hitbox 0 10 0 0)
   (images "tux.png")
  )
  (action
   (name "large-stop")
-  (y-offset 10)
+  (hitbox 0 10 0 0)
   (images "tux.png")
  )
  (action
   (name "fire-walking")
-  (y-offset 10)
+  (hitbox 0 10 0 0)
   (images "firetux.png")
  )
  (action
   (name "fire-stop")
-  (y-offset 10)
+  (hitbox 0 10 0 0)
   (images "firetux.png")
  )
 )
diff --git a/data/images/worldmap/common/yeti.sprite b/data/images/worldmap/common/yeti.sprite
index ee68ba778..fe84c67fd 100644
--- a/data/images/worldmap/common/yeti.sprite
+++ b/data/images/worldmap/common/yeti.sprite
@@ -1,8 +1,7 @@
 (supertux-sprite
   (action
     (name "default")
-    (x-offset 0)
-    (y-offset 65)
+    (hitbox 0 65 0 0)
 (fps 5)
     (images "../../creatures/yeti/worldmap_1.png"
 "../../creatures/yeti/worldmap_1.png"
@@ -41,8 +40,7 @@
   )
   (action
     (name "solved")
-    (x-offset 0)
-    (y-offset 65)
+    (hitbox 0 65 0 0)
 (fps 3)
     (images "../../creatures/yeti/iceyeti_dust_wm_0.png"
 "../../creatures/yeti/iceyeti_dust_wm_1.png"
diff --git a/src/badguy/mrtree.cpp b/src/badguy/mrtree.cpp
index 6eeb74613..c4d33f113 100644
--- a/src/badguy/mrtree.cpp
+++ b/src/badguy/mrtree.cpp
@@ -26,13 +26,19 @@ static const float WALKSPEED = 100;
 static const float WALKSPEED_SMALL = 120;
 static const float INVINCIBLE_TIME = 1;
 
+static const float POISONIVY_WIDTH = 32;
+static const float POISONIVY_HEIGHT = 32;
+static const float POISONIVY_Y_OFFSET = 24;
+
+
 MrTree::MrTree(const lisp::Lisp& reader)
   : mystate(STATE_BIG)
 {
   reader.get("x", start_position.x);
   reader.get("y", start_position.y);
-  bbox.set_size(84.8, 84.8);
   sprite = sprite_manager->create("images/creatures/mr_tree/mr_tree.sprite");
+  sprite->set_action(dir == LEFT ? "large-left" : "large-right");
+  bbox.set_size(sprite->get_current_hitbox_width(), sprite->get_current_hitbox_height());
 }
 
 void
@@ -90,24 +96,29 @@ MrTree::collision_squished(Player& player)
   if(mystate == STATE_BIG) {
     mystate = STATE_INVINCIBLE;
     invincible_timer.start(INVINCIBLE_TIME);
+
+    float old_x_offset = sprite->get_current_hitbox_x_offset();
+    float old_y_offset = sprite->get_current_hitbox_y_offset();
     activate();
 
     // shrink bounding box and adjust sprite position to where the stump once was
-    bbox.set_size(42, 62);
+    bbox.set_size(sprite->get_current_hitbox_width(), sprite->get_current_hitbox_height());
     Vector pos = get_pos();
-    pos.x += 20;
-    pos.y += 23;
+    pos.x += sprite->get_current_hitbox_x_offset() - old_x_offset;
+    pos.y += sprite->get_current_hitbox_y_offset() - old_y_offset;
     set_pos(pos);
 
     sound_manager->play("sounds/mr_tree.ogg", get_pos());
     player.bounce(*this);
 
-    Rect leaf1_bbox = Rect(pos.x-32-1, pos.y-23+1, pos.x-32-1+32, pos.y-23+1+32);
+    Vector leaf1_pos = Vector(pos.x - POISONIVY_WIDTH - 1, pos.y - POISONIVY_Y_OFFSET);
+    Rect leaf1_bbox = Rect(leaf1_pos.x, leaf1_pos.y, leaf1_pos.x + POISONIVY_WIDTH, leaf1_pos.y + POISONIVY_HEIGHT);
     if (Sector::current()->is_free_space(leaf1_bbox)) {
       PoisonIvy* leaf1 = new PoisonIvy(leaf1_bbox.p1.x, leaf1_bbox.p1.y, LEFT);
       Sector::current()->add_object(leaf1);
     }
-    Rect leaf2_bbox = Rect(pos.x+42+1, pos.y-23+1, pos.x+32+1+32, pos.y-23+1+32);
+    Vector leaf2_pos = Vector(pos.x + sprite->get_current_hitbox_width() + 1, pos.y - POISONIVY_Y_OFFSET);
+    Rect leaf2_bbox = Rect(leaf2_pos.x, leaf2_pos.y, leaf2_pos.x + POISONIVY_WIDTH, leaf2_pos.y + POISONIVY_HEIGHT);
     if (Sector::current()->is_free_space(leaf2_bbox)) {
       PoisonIvy* leaf2 = new PoisonIvy(leaf2_bbox.p1.x, leaf2_bbox.p1.y, RIGHT);
       Sector::current()->add_object(leaf2);
@@ -126,7 +137,7 @@ MrTree::collision_squished(Player& player)
   // if we're small, we die
   if (mystate == STATE_NORMAL) {
     sprite->set_action(dir == LEFT ? "squished-left" : "squished-right");
-    bbox.set_size(42, 42);
+    bbox.set_size(sprite->get_current_hitbox_width(), sprite->get_current_hitbox_height());
     kill_squished(player);
     return true;
   }
diff --git a/src/sprite/sprite.cpp b/src/sprite/sprite.cpp
index 82d0d7c46..43f582a16 100644
--- a/src/sprite/sprite.cpp
+++ b/src/sprite/sprite.cpp
@@ -142,6 +142,30 @@ Sprite::get_height() const
   return (int) action->surfaces[get_frame()]->get_height();
 }
 
+float
+Sprite::get_current_hitbox_x_offset() const
+{
+  return action->x_offset;
+}
+
+float
+Sprite::get_current_hitbox_y_offset() const
+{
+  return action->y_offset;
+}
+
+float
+Sprite::get_current_hitbox_width() const
+{
+  return action->hitbox_w;
+}
+
+float
+Sprite::get_current_hitbox_height() const
+{
+  return action->hitbox_h;
+}
+
 void
 Sprite::set_fps(float new_fps)
 {
diff --git a/src/sprite/sprite.hpp b/src/sprite/sprite.hpp
index 229f6340b..9c138e200 100644
--- a/src/sprite/sprite.hpp
+++ b/src/sprite/sprite.hpp
@@ -70,6 +70,15 @@ public:
   int get_width() const;
   int get_height() const;
 
+  /** return x-offset of current action's hitbox, relative to start of image */
+  float get_current_hitbox_x_offset() const;
+  /** return y-offset of current action's hitbox, relative to start of image */
+  float get_current_hitbox_y_offset() const;
+  /** return width of current action's hitbox */
+  float get_current_hitbox_width() const;
+  /** return height of current action's hitbox */
+  float get_current_hitbox_height() const;
+
   /** Get current frame */
   int get_frame() const
   { return (int)frame; }
diff --git a/src/sprite/sprite_data.cpp b/src/sprite/sprite_data.cpp
index cf0b7a7cc..599e4e1d8 100644
--- a/src/sprite/sprite_data.cpp
+++ b/src/sprite/sprite_data.cpp
@@ -34,6 +34,8 @@ SpriteData::Action::Action()
 {
   x_offset = 0;
   y_offset = 0;
+  hitbox_w = 0;
+  hitbox_h = 0;
   z_order = 0;   
   fps = 10;
 }
@@ -77,8 +79,14 @@ SpriteData::parse_action(const lisp::Lisp* lisp, const std::string& basedir)
       throw std::runtime_error(
           "If there are more than one action, they need names!");
   }
-  lisp->get("x-offset", action->x_offset);
-  lisp->get("y-offset", action->y_offset);
+  std::vector<float> hitbox;
+  if (lisp->get_vector("hitbox", hitbox)) {
+    if (hitbox.size() != 4) throw std::runtime_error("hitbox must specify exactly 4 coordinates");
+    action->x_offset = hitbox[0];
+    action->y_offset = hitbox[1];
+    action->hitbox_w = hitbox[2];
+    action->hitbox_h = hitbox[3];
+  }
   lisp->get("z-order", action->z_order);
   lisp->get("fps", action->fps);
 
@@ -90,12 +98,18 @@ SpriteData::parse_action(const lisp::Lisp* lisp, const std::string& basedir)
       throw std::runtime_error("Could not mirror action. Action not found\n"
                    "Mirror actions must be defined after the real one!");
     } else {
+      float max_w = 0;
+      float max_h = 0;
       for(int i = 0; static_cast<unsigned int>(i) < act_tmp->surfaces.size();
           i++) {
         Surface* surface = new Surface(*(act_tmp->surfaces[i]));
         surface->hflip();
+        max_w = std::max(max_w, surface->get_width());
+        max_h = std::max(max_h, surface->get_height());
         action->surfaces.push_back(surface);
       }
+      if (action->hitbox_w < 1) action->hitbox_w = max_w;
+      if (action->hitbox_h < 1) action->hitbox_h = max_h;
     }
   } else { // Load images
     std::vector<std::string> images;
@@ -106,9 +120,16 @@ SpriteData::parse_action(const lisp::Lisp* lisp, const std::string& basedir)
       throw std::runtime_error(msg.str());
     }
 
+    float max_w = 0;
+    float max_h = 0;
     for(std::vector<std::string>::size_type i = 0; i < images.size(); i++) {
-      action->surfaces.push_back(new Surface(basedir + images[i]));
+      Surface* surface = new Surface(basedir + images[i]);
+      max_w = std::max(max_w, surface->get_width());
+      max_h = std::max(max_h, surface->get_height());
+      action->surfaces.push_back(surface);
     }
+    if (action->hitbox_w < 1) action->hitbox_w = max_w;
+    if (action->hitbox_h < 1) action->hitbox_h = max_h;
   }
   actions[action->name] = action;
 }
diff --git a/src/sprite/sprite_data.hpp b/src/sprite/sprite_data.hpp
index e1e8b8fa0..3f73f4c1f 100644
--- a/src/sprite/sprite_data.hpp
+++ b/src/sprite/sprite_data.hpp
@@ -30,8 +30,7 @@
 class SpriteData
 {
 public:
-  /** cur has to be a pointer to data in the form of ((x-offset 5)
-    (y-offset 10) ...) */
+  /** cur has to be a pointer to data in the form of ((hitbox 5 10 0 0) ...) */
   SpriteData(const lisp::Lisp* cur, const std::string& basedir);
   ~SpriteData();
 
@@ -51,8 +50,15 @@ private:
     std::string name;
 
     /** Position correction */
-    int x_offset;
-    int y_offset;
+    float x_offset;
+    float y_offset;
+
+    /** Hitbox width */
+    float hitbox_w;
+
+    /** Hitbox height */
+    float hitbox_h;
+
     /** Drawing priority in queue */
     int z_order;