split the update method up into components, easier to understand

lib/light_world.lua

@@ -261,7 +261,9 @@ end
 
 -- draw shadow
 function light_world:drawShadow()
-  if self.optionShadows and (self.isShadows or self.isLight) then
+  if not self.optionShadows or not (self.isShadows or self.isLight) then
+    return
+  end
   love.graphics.setColor(255, 255, 255)
   if self.blur then
     self.last_buffer = love.graphics.getCanvas()
@@ -286,10 +288,12 @@ function light_world:drawShadow()
     love.graphics.setBlendMode("alpha")
   end
 end
-end
+
 -- draw shine
 function light_world:drawShine()
-  if self.optionShadows and self.isShadows then
+  if not self.optionShadows or not self.isShadows then
+    return
+  end
   love.graphics.setColor(255, 255, 255)
   if self.blur and false then
     self.last_buffer = love.graphics.getCanvas()
@@ -314,17 +318,19 @@ function light_world:drawShine()
     love.graphics.setBlendMode("alpha")
   end
 end
-end
+
 -- draw pixel shadow
 function light_world:drawPixelShadow()
-  if self.optionPixelShadows and self.isPixelShadows then
+  if not self.optionPixelShadows or not self.isPixelShadows then
+    return 
+  end
   love.graphics.setColor(255, 255, 255)
   love.graphics.setBlendMode("multiplicative")
   love.graphics.setShader()
   love.graphics.draw(self.pixelShadow, self.translate_x, self.translate_y)
   love.graphics.setBlendMode("alpha")
 end
-end
+
 -- draw material
 function light_world:drawMaterial()
   love.graphics.setShader(self.materialShader)
@@ -333,9 +339,13 @@ function light_world:drawMaterial()
   end
   love.graphics.setShader()
 end
+
 -- draw glow
 function light_world:drawGlow()
-  if self.optionGlow and self.isGlow then
+  if not self.optionGlow or not self.isGlow then
+    return
+  end
+
   love.graphics.setColor(255, 255, 255)
   if self.glowBlur == 0.0 then
     love.graphics.setBlendMode("additive")
@@ -360,10 +370,12 @@ function light_world:drawGlow()
     love.graphics.setBlendMode("alpha")
   end
 end
-end
 -- draw refraction
 function light_world:drawRefraction()
-  if self.optionRefraction and self.isRefraction then
+  if not self.optionRefraction or not self.isRefraction then
+    return
+  end
+
   self.last_buffer = love.graphics.getCanvas()
   if self.last_buffer then
     love.graphics.setColor(255, 255, 255)
@@ -378,10 +390,13 @@ function light_world:drawRefraction()
     love.graphics.setShader()
   end
 end
-end
+
 -- draw reflection
 function light_world:drawReflection()
-  if self.optionReflection and self.isReflection then
+  if not self.optionReflection or not self.isReflection then
+    return
+  end
+
   self.last_buffer = love.graphics.getCanvas()
   if self.last_buffer then
     love.graphics.setColor(255, 255, 255)
@@ -397,19 +412,21 @@ function light_world:drawReflection()
     love.graphics.setShader()
   end
 end
-end
+
 -- new light
 function light_world:newLight(x, y, red, green, blue, range)
   self.lights[#self.lights + 1] = Light(self, x, y, red, green, blue, range)
   self.isLight = true
   return self.lights[#self.lights]
 end
+
 -- clear lights
 function light_world:clearLights()
   self.lights = {}
   self.isLight = false
   self.changed = true
 end
+
 -- clear objects
 function light_world:clearBodys()
   self.body = {}
@@ -420,41 +437,50 @@ function light_world:clearBodys()
   self.isRefraction = false
   self.isReflection = false
 end
+
 -- set offset
 function light_world:setTranslation(translateX, translateY)
   self.translate_x = translateX
   self.translate_y = translateY
 end
+
 -- set ambient color
 function light_world:setAmbientColor(red, green, blue)
   self.ambient = {red, green, blue}
 end
+
 -- set ambient red
 function light_world:setAmbientRed(red)
   self.ambient[1] = red
 end
+
 -- set ambient green
 function light_world:setAmbientGreen(green)
   self.ambient[2] = green
 end
+
 -- set ambient blue
 function light_world:setAmbientBlue(blue)
   self.ambient[3] = blue
 end
+
 -- set normal invert
 function light_world:setNormalInvert(invert)
   self.normalInvert = invert
 end
+
 -- set blur
 function light_world:setBlur(blur)
   self.blur = blur
   self.changed = true
 end
+
 -- set blur
 function light_world:setShadowBlur(blur)
   self.blur = blur
   self.changed = true
 end
+
 -- set buffer
 function light_world:setBuffer(buffer)
   if buffer == "render" then