--- a/mhrok.css	Wed Oct 31 15:18:02 2012 +0100
+++ b/mhrok.css	Wed Oct 31 16:09:03 2012 +0100
@@ -72,6 +72,6 @@
 #mhrok .mhrok-map .mhrok-a {
     background-position: -0px -48px;
 }
-#mhrok .mhrok-map .mhrok-b {
+#mhrok .mhrok-map .mhrok-B {
     background-position: -32px -24px;
 }

--- a/mhrok.js	Wed Oct 31 15:18:02 2012 +0100
+++ b/mhrok.js	Wed Oct 31 16:09:03 2012 +0100
@@ -75,9 +75,17 @@
     Char.prototype.update = function (game) {
         this.animation = 'stand';
     };
-    Char.prototype.walk = function (direction) {
+    Char.prototype.walk = function (game, direction) {
+        var x = Math.round(this.x / 32);
+        var y = Math.round(this.y /24);
+        var dir = this.directions[direction];
+        this.direction = direction;
+        if (game.level.isBlocked(x + dir[0], y + dir[1])) {
+            this.animation = 'stand';
+            return false;
+        };
         this.animation = 'walk';
-        this.direction = direction;
+        return true;
     };
 
 
@@ -97,21 +105,22 @@
         Char.prototype.animate.apply(this, arguments);
     };
     Hero.prototype.update = function (game) {
-        if (game.keys[37] || game.last_key === 37) { // Left arrow
-            this.walk('west');
-        } else if (game.keys[38] || game.last_key === 38) { // Up arrow
-            this.walk('north');
-        } else if (game.keys[39] || game.last_key === 39) { // Right arrow
-            this.walk('east');
-        } else if (game.keys[40] || game.last_key === 40) { // Down arrow
-            this.walk('south');
-        } else if (game.keys[32] || game.last_key === 32) { // Space
+        var last_key = game.last_key;
+        game.last_key = null;
+        if (game.keys[37] || last_key === 37) { // Left arrow
+            return this.walk(game, 'west');
+        } else if (game.keys[38] || last_key === 38) { // Up arrow
+            return this.walk(game, 'north');
+        } else if (game.keys[39] || last_key === 39) { // Right arrow
+            return this.walk(game, 'east');
+        } else if (game.keys[40] || last_key === 40) { // Down arrow
+            return this.walk(game, 'south');
+        } else if (game.keys[32] || last_key === 32) { // Space
             this.animation = 'stab';
         } else {
             this.animation = 'stand';
             return false;
         };
-        game.last_key = null;
         return true;
     };
 
@@ -140,7 +149,7 @@
         for (var y=0; y < 20; ++y) {
             for (var x=0; x < 20; ++x) {
                 var c = this.map[y][x];
-                if (c === 'b') {
+                if (c === 'B') {
                     mobs.push(new Wall(x, y, 1));
                 };
                 if (c === 'X') {
@@ -150,6 +159,14 @@
         };
         return mobs;
     };
+    Level.prototype.isBlocked = function (x, y) {
+        if (x<0 || y <0 || y>=this.map.lentgh || x>=this.map[0].length) {
+            return false;
+        };
+        var c = this.map[y][x];
+        console.log(c);
+        return (c.toUpperCase() === c);
+    };
 
 
     var Game = function (element) {
@@ -294,16 +311,27 @@
     Zombie.prototype.classes += ' mhrok-zombie';
     Zombie.prototype.update = function (game) {
         if (game.hero.y > this.y) {
-            this.walk('south');
-        } else if (game.hero.y < this.y) {
-            this.walk('north');
-        } else if (game.hero.x > this.x) {
-            this.walk('east');
-        } else if (game.hero.x < this.x) {
-            this.walk('west');
-        } else {
-            this.animation = 'stand';
+            if (this.walk(game, 'south')) {
+                return true;
+            };
+        };
+        if (game.hero.y < this.y) {
+            if (this.walk(game, 'north')) {
+                return true;
+            };
         };
+        if (game.hero.x > this.x) {
+            if (this.walk(game, 'east')) {
+                return true;
+            };
+        };
+        if (game.hero.x < this.x) {
+            if (this.walk(game, 'west')) {
+                return true;
+            };
+        };
+        this.animation = 'stand';
+        return false;
     };
 
 
@@ -311,24 +339,24 @@
         MhrokLib.Game.apply(this, arguments);
         this.level = new MhrokLib.Level([
             'XXXXXXXXXXXXXXXXXXXX',
-            'XabaaaaaaaaaaaaaaaaX',
-            'XaaaaaabaaaaaaaaaaaX',
-            'XaaaabbbaaaaaaaaaabX',
-            'XaababXbaaaaaaaaaabX',
-            'XaaaabbbbaabbaaaaabX',
-            'XaaaaaabbaabbaaaaaaX',
-            'XaaaaaaaaaaaaaabbaaX',
-            'XaaaaaaaaaaabaabbaaX',
+            'XaBaaaaaaaaaaaaaaaaX',
+            'XaaaaaaBaaaaaaaaaaaX',
+            'XaaaaBBBaaaaaaaaaaBX',
+            'XaaBaBXBaaaaaaaaaaBX',
+            'XaaaaBBBBaaBBaaaaaBX',
+            'XaaaaaaBBaaBBaaaaaaX',
+            'XaaaaaaaaaaaaaaBBaaX',
+            'XaaaaaaaaaaaBaaBBaaX',
             'XaaaaaaaaaaaaaaaaaaX',
-            'XaaaaaaaaaaaabbbbabX',
-            'XaaaaaaaaaaaabbbbabX',
-            'XaabbbbaaaaaaaabaabX',
-            'XaabXXbaaaaaaaaaabbX',
-            'XaabXXbaaaaaaaaaabXX',
-            'XaabbbbaaaaaaaaaabXX',
-            'XaaaaaaaaaabaabbbbXX',
-            'XaaaaabbbabbbbbXXXXX',
-            'XaaaabbXbbbXXXXXXXXX',
+            'XaaaaaaaaaaaaBBBBaBX',
+            'XaaaaaaaaaaaaBBBBaBX',
+            'XaaBBBBaaaaaaaaBaaBX',
+            'XaaBXXBaaaaaaaaaaBBX',
+            'XaaBXXBaaaaaaaaaaBXX',
+            'XaaBBBBaaaaaaaaaaBXX',
+            'XaaaaaaaaaaBaaBBBBXX',
+            'XaaaaaBBBaBBBBBXXXXX',
+            'XaaaaBBXBBBXXXXXXXXX',
             'XXXXXXXXXXXXXXXXXXXX',
         ]);
         this.map_element.innerHTML = this.level.html();