better shake

main.lua

@@ -25,10 +25,7 @@ function love.load()
 	gameWorld = World:new()
 	_initLevelEditor()
 
-	gameCanvas = love.graphics.newCanvas()
-	sideBarCanvas = love.graphics.newCanvas(sideBarBox.w, sideBarBox.h)
-	finalCanvas = love.graphics.newCanvas()
-
+	_initCanvases()
 
 	inputTimer = Timer.new()
 
@@ -141,12 +138,32 @@ function love.textinput(t)
 	editorTextHandler(response)
 end
 
+function love.resize(w, h)
+	_computeDimensions()
+	drawScale = width / gridWidth / 16
+	_initCanvases()
+end
+
 function _initDefaults()
 	--set filter
 	love.graphics.setDefaultFilter("linear", "nearest")
 	love.filesystem.createDirectory("rooms")
 	
-	--set global width / height variables
+	--set global width / height / sidebar variables
+	_computeDimensions()
+
+	--set randomseed
+	math.randomseed(os.time())
+
+	--font
+	font = love.graphics.newFont("font/LCD_Solid.ttf", 16)
+	love.graphics.setFont(font)
+end
+
+-- Derive the square play area (side = smaller window dimension) and the
+-- sidebar that fills the remaining horizontal space. Safe to call any time
+-- the window size changes.
+function _computeDimensions()
 	width = love.graphics.getWidth()
 	height = love.graphics.getHeight()
 	if width > height then
@@ -155,17 +172,16 @@ function _initDefaults()
 		height = width
 	end
 
-	--set randomseed
-	math.randomseed(os.time())
-
-	--font
-	font = love.graphics.newFont("font/LCD_Solid.ttf", 16)
-	love.graphics.setFont(font)
-
-	--sidebar
 	sideBarBox = {x = width, y = 0, w = love.graphics.getWidth() - width, h = height}
 end
 
+-- (Re)create the render targets at the current window size.
+function _initCanvases()
+	gameCanvas = love.graphics.newCanvas()
+	finalCanvas = love.graphics.newCanvas()
+	sideBarCanvas = love.graphics.newCanvas(math.max(1, sideBarBox.w), math.max(1, sideBarBox.h))
+end
+
 function _initGridVars()
 	gridWidth, gridHeight = 11, 11
 	drawScale = width / gridWidth / 16