add a little slope to some trees

baumgen.js

@@ -27,7 +27,10 @@ function gen_tree(pos, maxheight) {
         );
     }
 
-    baum.angle = Math.PI / 2; // + Math.random() * 0.2 - 0.1;
+    baum.angle = Math.PI / 2;
+    if(Math.random() < 0.3) {
+        baum.angle += Math.random() * 0.2 - 0.1;
+    }
 
     if((baum.crown.shape != "triangle") && (Math.random() < 0.5)) {
         var b = {