Editor canvas modification bugfix, selected tile preview fix

data/scripts/level.lua

@@ -21,6 +21,8 @@ end
 
 
 function LevelExpandCanvas(horizontal,vertical)
+	local horizontal = horizontal or 0
+	local vertical = vertical or 0
 	local h = LevelGetTileWidth()
 	local v = LevelGetTileHeight()
 
@@ -51,7 +53,7 @@ function LevelExpandCanvas(horizontal,vertical)
 	-- get data from old canvas to new canvas
 	for i = 1, #LevelTiles do
 		for j = 1, #LevelTiles[i] do
-			ExpandedLevel[i+expand_v][j+expand_h] = InstanceTile(LevelTiles[i][j])
+			ExpandedLevel[i+expand_v][j+expand_h] = InstanceTile(LevelTiles[i][j].id)
 		end
 	end
 
@@ -61,6 +63,8 @@ end
 
 
 function LevelReduceCanvas(horizontal,vertical)
+	local horizontal = horizontal or 0
+	local vertical = vertical or 0
 	local h = LevelGetTileWidth()
 	local v = LevelGetTileHeight()
 
@@ -91,12 +95,14 @@ function LevelReduceCanvas(horizontal,vertical)
 	-- get data from old canvas to new canvas
 	for i = 1, #ExpandedLevel do
 		for j = 1, #ExpandedLevel[i] do
-			ExpandedLevel[i][j] = InstanceTile(LevelTiles[i+expand_v][j+expand_h])
+			ExpandedLevel[i][j] = InstanceTile(LevelTiles[i+expand_v][j+expand_h].id)
 		end
 	end
 
 	-- use new canvas
 	LevelTiles = ExpandedLevel
+
+	LevelExpandCanvas()
 end
 
 function LevelGetTileData()