--- a/src/proto2/Physics.cc	Mon Dec 01 22:58:15 2008 +0000
+++ b/src/proto2/Physics.cc	Mon Dec 01 23:32:17 2008 +0000
@@ -43,66 +43,27 @@
 }
 
 Vector PhysicsObject::walk (bool right) {
-    Vector cursor = this->position + (right ? Vector(1,0) : Vector(-1,0));
+    float deltaX = right ? 1 : -1;
     Vector reached = this->position;
-    
-    //for(int steps = 0; steps < 3; steps++) {
-    
-    // Go up but not if the wall is over two pixels
-    if(world.collides(cursor+shape[2])) {
-        for(int height = 0, max = 2; height < max+42; height++) {
-            
-            if(height >= max)
-                return reached;
-            
-            cursor.y--;
-            if(!world.collides(cursor+shape[2])) {
-                // Check that the other parts of the worm don't collide with anything
-                if(possibleLocation(cursor)) {
-                    reached = cursor;
-                    continue;
-                } else {
-                    // Can't get any further
-                    return reached;
-                }
+   
+    if(!possibleLocation(position+Vector(deltaX, 0))) {
+        for(int i = 1; i < 3; i++) {
+            if(possibleLocation(position+Vector(deltaX, -i))) {
+                reached = position+Vector(deltaX, -i);
+                break;
             }
         }
     } else {
-        if(possibleLocation(cursor)) {
-            reached = cursor;
-        }
-        // Start checking if the lower squares are empty
-        
-        for(int depth = 0, max = 3; depth < max+42; depth++) {
-            
-            if(depth >= max) {
-                // We can start a free fall now
-                //
-                // TODO it should be set inAir if it falls from a cliff
-//                this->inAir = true;
-                
-                // Put some speed there to make loke smoother
-                //this->velocity.y = -5;
-                return reached;
-            }
-            
-            cursor.y++;
-            if(!world.collides(cursor+shape[2])) {
-                // Check that the other parts of the worm don't collide with anything
-                if(possibleLocation(cursor)) {
-                    reached = cursor;
-                    continue;
-                } else {
-                    // Can't get any further
-                    return reached;
-                }
+        for(int i = 0; i < 3; i++) {
+            if(possibleLocation(position+Vector(deltaX, i))) {
+                reached = position+Vector(deltaX, i);
+            } else {
+                break;
             }
         }
-    }      
-    
-    //    cursor.x += right ? 1 : -1;
-    //}
+    }
     return reached;
+ 
 }
 
 void PhysicsObject::jump () {
@@ -168,7 +129,7 @@
     const Vector unitVector = diffVec / diffVec.length();
     Vector reached = position;
 
-    while ((position-reached).length() < diffVec.length()) {
+    while ((position-reached).sqrLength() < diffVec.sqrLength()) {
         // Check if any of the shapes points collide
         for (uint64_t i = 0; i < shape.size(); i++) {
             if (world.getType(reached+shape[i]) != EMPTY) {  // Collision