data/scripts/camera.lua

@@ -4,15 +4,19 @@ Camera = {
 	height = 0
 }
 
-function Camera:ConfineToLevel()
-	self.pos.x = math.max(0,math.min(self.pos.x,LevelData.Width-self.width/game.scale))
-	self.pos.y = math.max(0,math.min(self.pos.y,LevelData.Height-self.height/game.scale))
-end
-
-function Camera:positionCenterAt(x,y)
+function Camera:positionCenterAt(x,y,cx,cy)
 	self.pos.x = x-self.width/game.scale/2
 	self.pos.y = y-self.height/game.scale/2
-	self:ConfineToLevel()
+	if not (cx == nil or cy == nil) then
+		cx = cx - self.width
+		cy = cy - self.height
+		if self.pos.x > cx then self.pos.x = cx end
+		if self.pos.y > cy then self.pos.y = cy end
+		if self.pos.x < 0 then self.pos.x = 0 end
+		if self.pos.y < 0 then self.pos.y = 0 end
+	end
+	self.pos.x = math.floor(self.pos.x)
+	self.pos.y = math.floor(self.pos.y)
 end
 
 function Camera:positionAt(x,y)

data/scripts/editor.lua

@@ -90,8 +90,8 @@ end
 function EditorDoEdit()
   local mouse_x = love.mouse.getX()
   local mouse_y = love.mouse.getY()
-  local horizontal = 1+math.floor(((mouse_x/game.scale) / tileProperties.width) + (Camera.pos.x / tileProperties.width))
-  local vertical = 1+math.floor(((mouse_y/game.scale) / tileProperties.height) + (Camera.pos.y / tileProperties.height))
+  local horizontal = 1 + math.floor(((mouse_x/game.scale) / tileProperties.width) + (Camera.pos.x / tileProperties.width))
+  local vertical = 1 + math.floor(((mouse_y/game.scale) / tileProperties.height) + (Camera.pos.y / tileProperties.height))
   local expand_h = 0
   local expand_v = 0
   local LevelWidth = LevelGetTileWidth()
@@ -127,10 +127,23 @@ function EditorDoEdit()
 
     elseif Keybind:HasPressed(Keybind.generic.lshift) then
   	  LevelExpandCanvas(math.sign(expand_h),math.sign(expand_v))
-      LevelReloadTiles()
+
+    	if expand_h < 0 then
+  	   Camera.pos.x = Camera.pos.x - math.sign(expand_h)*tileProperties.scale*tileProperties.width
+    	end
+    	if expand_v < 0 then
+  	   Camera.pos.y = Camera.pos.y - math.sign(expand_v)*tileProperties.scale*tileProperties.height
+    	end
+
     elseif Keybind:HasPressed(Keybind.generic.lctrl) then
       LevelReduceCanvas(math.sign(expand_h),math.sign(expand_v))
-      LevelReloadTiles()
+
+      if expand_h < 0 then
+    	   Camera.pos.x = Camera.pos.x - math.sign(expand_h)*tileProperties.scale*tileProperties.width
+    	end
+    	if expand_v < 0 then
+    		Camera.pos.y = Camera.pos.y - math.sign(expand_v)*tileProperties.scale*tileProperties.height
+    	end
     end
   end
 end
@@ -138,18 +151,14 @@ end
 function DrawSelectingPaletteTile()
   if selecting_tile ~= nil and selecting_tile ~= 0 then
 
-    local mouse_x = love.mouse.getX()
-    local mouse_y = love.mouse.getY()
-    local horizontal = math.floor(((mouse_x/game.scale) / tileProperties.width) + (Camera.pos.x / tileProperties.width))
-    local vertical = math.floor(((mouse_y/game.scale) / tileProperties.height) + (Camera.pos.y / tileProperties.height))
-    local draw_x = tileProperties.width * horizontal - Camera.pos.x
-    local draw_y = tileProperties.height * vertical - Camera.pos.y
+    local mouse_x = tileProperties.width * math.floor((love.mouse.getX()/game.scale) / tileProperties.width) - Camera.pos.x % tileProperties.width
+    local mouse_y = tileProperties.height * math.floor((love.mouse.getY()/game.scale) / tileProperties.height) - Camera.pos.y % tileProperties.height
 
     love.graphics.draw(
   		LevelData.tileset,
       TileIndex[selecting_tile],
-      draw_x,
-      draw_y
+      mouse_x,
+      mouse_y
     )
   end
 end

data/scripts/level.lua

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

main.lua

@@ -112,5 +112,5 @@ function love.draw()
 
 	if menuPage ~= nil then MenuDraw(menuPage) end
 
-	love.graphics.print(game.scale,10,40)
+	love.graphics.print(arrow,10,40)
 end