From 0ed962fae96a6b7b710414b863204d5fb4eee30c Mon Sep 17 00:00:00 2001
From: Coeuvre Wong <coeuvre@gmail.com>
Date: Sat, 4 Jul 2015 00:45:58 +0800
Subject: [PATCH] Randomly generate 2 or 4 tile

---
 src/board.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/board.rs b/src/board.rs
index 1191e0c..5acc10e 100644
--- a/src/board.rs
+++ b/src/board.rs
@@ -36,7 +36,12 @@ impl<'a> Board<'a> {
             let y = (random::<u32>() % self.settings.tile_height as u32) as i32;
 
             if self.get_tile(x, y).is_none() {
-                self.tiles.push(Tile::new(self.settings, 2, x, y));
+                let score = if random::<u32>() % 2 == 0 {
+                    2
+                } else {
+                    4
+                };
+                self.tiles.push(Tile::new(self.settings, score, x, y));
                 break;
             }
         }