1 files changed, 59 insertions, 2 deletions
diff --git a/assets/javascripts/rectangles/engine/builder.js b/assets/javascripts/rectangles/engine/builder.js
index 697b7e7..ba180d2 100644
--- a/assets/javascripts/rectangles/engine/builder.js
+++ b/assets/javascripts/rectangles/engine/builder.js
@@ -112,8 +112,13 @@ var builder = new function(){
 				var intersected = false
 				for (var i = 0; i < already_constructed.length; i++) {
 					if (already_constructed[i].rect.intersects(r)) {
-						// probably create walls here?
+						// probably create extra walls here?
 						intersected = true
+
+						if (rm.height < already_constructed[i].height) {
+							list = list.concat( ceiling_walls( rm, already_constructed[i], r ) )
+						}
+
 					}
 				}
 				if (! intersected) {
@@ -122,7 +127,6 @@ var builder = new function(){
 				}
 			})
 
-
 		}
 		else {
 			// render floor and ceiling for the entire rectangle
@@ -133,6 +137,59 @@ var builder = new function(){
 		rm.constructed = true
 		return list
 	}
+	
+	function ceiling_walls( lo, hi, r ){
+		var list = []
+		
+		var width = r.x.length()
+		var depth = r.y.length()
+		var height = hi.height - lo.height
+		
+		if (r.x.a == hi.rect.x.a) {
+			el = wall('.left')
+			el.rotationY = HALF_PI
+			el.height = height
+			el.width = depth
+			el.x = r.x.a
+			el.y = lo.height + height/2
+			el.z = r.y.a + depth/2
+			list.push(el)
+		}
+
+		if (r.x.b == hi.rect.x.b) {
+			el = wall('.right')
+			el.rotationY = -HALF_PI
+			el.height = height
+			el.width = depth
+			el.x = r.x.b
+			el.y = lo.height + height/2
+			el.z = r.y.b - depth/2
+			list.push(el)
+		}
+
+		if (r.y.a == hi.rect.y.a) {
+			el = wall('.front')
+			el.width = width
+			el.height = height
+			el.rotationY = PI
+			el.x = r.x.a + width/2
+			el.y = lo.height + height/2
+			el.z = r.y.a
+			list.push(el)
+		}
+
+		if (r.y.b == hi.rect.y.b) {
+			el = wall('.back')
+			el.width = width
+			el.height = height
+			el.rotationY = 0
+			el.x = r.x.b - width/2
+			el.y = lo.height + height/2
+			el.z = r.y.b
+			list.push(el)
+		}
+		return list
+	}
 
 	function ground(rm, r){
 		var width = r.x.length()