整理代码

Zframework/light/init.lua

@@ -2,9 +2,9 @@
 --Heavily based on mattdesl's libGDX implementation:
 --https://github.com/mattdesl/lwjgl-basics/wiki/2D-Pixel-Perfect-Shadows
 local gc=love.graphics
-local clear,translate=gc.clear,gc.translate
-local setCanvas,setShader=gc.setCanvas,gc.setShader
-local render=gc.draw
+local clear,gc_translate=gc.clear,gc.translate
+local gc_setCanvas,gc_setShader=gc.setCanvas,gc.setShader
+local gc_setColor,gc_draw=gc.setColor,gc.draw
 
 local shadowMapShader=gc.newShader("Zframework/light/shadowMap.glsl")--Shader for caculating the 1D shadow map.
 local lightRenderShader=gc.newShader("Zframework/light/lightRender.glsl")--Shader for rendering blurred lights and shadows.
@@ -15,45 +15,40 @@ end
 local function setPow(L,pow)
 	L.size=pow
 end
-local function destroy(L)
-	L.blackCanvas:release()
-	L.shadowCanvas:release()
-	L.renderCanvas:release()
-end
-local function draw(L)
+local function drawLight(L)
+	local s=L.size
+
 	--Initialization
-	local r,g,b,a=gc.getColor()
-	setCanvas(L.blackCanvas)clear()
-	setCanvas(L.shadowCanvas)clear()
-	setCanvas(L.renderCanvas)clear()
-	lightRenderShader:send("xresolution",L.size)
-	shadowMapShader:send("yresolution",L.size)
+	gc_setCanvas(L.blackCanvas)clear()
+	gc_setCanvas(L.shadowCanvas)clear()
+	gc_setCanvas(L.renderCanvas)clear()
+	lightRenderShader:send("xresolution",s)
+	shadowMapShader:send("yresolution",s)
 
 	--Get up-left of light
-	local X=L.x-L.size*.5
-	local Y=L.y-L.size*.5
+	local X=L.x-s*.5
+	local Y=L.y-s*.5
 
 	--Render solid
-	translate(-X,-Y)
+	gc_translate(-X,-Y)
 	L.blackCanvas:renderTo(L.blackFn)
-	translate(X,Y)
+	gc_translate(X,Y)
 
 	--Render shade canvas by solid
-	setShader(shadowMapShader)
-	setCanvas(L.shadowCanvas)
-	render(L.blackCanvas)
+	gc_setShader(shadowMapShader)
+	gc_setCanvas(L.shadowCanvas)
+	gc_draw(L.blackCanvas)
 
 	--Render light canvas by shade
-	setShader(lightRenderShader)
-	setCanvas(L.renderCanvas)
-	render(L.shadowCanvas,0,0,0,1,L.size)
+	gc_setShader(lightRenderShader)
+	gc_setCanvas(L.renderCanvas)
+	gc_draw(L.shadowCanvas,0,0,0,1,s)
 
 	--Ready to final render
-	setShader()setCanvas()gc.setBlendMode('add')
+	gc_setShader()gc_setCanvas()gc.setBlendMode('add')
 
-	--Render to screes
-	gc.setColor(r,g,b,a)
-	render(L.renderCanvas,X,Y+L.size,0,1,-1)
+	--Render to screen
+	gc_draw(L.renderCanvas,X,Y+s,0,1,-1)
 
 	--Reset
 	gc.setBlendMode('alpha')
@@ -61,13 +56,16 @@ end
 
 local LIGHT={}
 function LIGHT.draw()
+	gc_setColor(1,1,1)
 	for i=1,#Lights do
-		draw(Lights[i])
+		drawLight(Lights[i])
 	end
 end
 function LIGHT.clear()
 	for i=#Lights,1,-1 do
-		Lights[i]:destroy()
+		Lights[i].blackCanvas:release()
+		Lights[i].shadowCanvas:release()
+		Lights[i].renderCanvas:release()
 		Lights[i]=nil
 	end
 end
@@ -83,7 +81,6 @@ function LIGHT.add(x,y,radius,solidFunc)
 
 		move=move,
 		setPow=setPow,
-		destroy=destroy,
 	}
 end
 return LIGHT