From 3806b6b9cd9a5fa8b4ef1e25b682f65259db2b89 Mon Sep 17 00:00:00 2001
From: Robert Kolner <robert.kolner@gmail.com>
Date: Tue, 13 Mar 2012 17:56:29 +0100
Subject: [PATCH] Added check for validity of rotation.

---
 tetris.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tetris.js b/tetris.js
index add6445..dbb65c1 100644
--- a/tetris.js
+++ b/tetris.js
@@ -126,8 +126,11 @@ function TetrisGame(id) {
 	}
 	
 	this.canCurrentBrickRotate = function() {
-		/* TODO!! */
-		return true;
+		return this.isValidBrickLoc(
+				this.currentBrickId,
+				this.currentBrickLoc,
+				(this.currentBrickRot + 1) % 4
+			);
 	}
 	
 	this.moveCurrentBrickHorizontally = function(dx) {