quick fix to Layer cache generation

1 files changed, 6 insertions, 13 deletions

diff --git a/src/mapdata.py b/src/mapdata.py
index b43ff38..ad0bef2 100644
--- a/src/mapdata.py
+++ b/src/mapdata.py
@@ -44,21 +44,14 @@ class KPLayer(object):
 				y2 = pos[1] + size[1]
 
 
-		# resize the cache if needed
-		cache = self.cache
+		# create the cache
+		# I was going to just resize it, but setting every tile to -1
+		# in Python would probably be slower than creating a new one ...
 		size = (x2 - x1, y2 - y1)
 		width, height = size
-		oldSize = self.cacheSize
-
-		if oldSize[1] < size[1]:
-			for i in xrange(size[1] - oldSize[1]):
-				cache.append([0 for i in xrange(width)])
-		elif oldSize[1] > size[1]:
-			del cache[size[1]:]
-		
-		for i, elem in enumerate(cache):
-			if len(elem) != width:
-				cache[i] = [0 for i in xrange(width)]
+
+		cache = [[-1 for i in xrange(width)] for j in xrange(height)]
+		self.cache = cache
 
 		self.cacheBasePos = (x1, y1)
 		self.cacheSize = size