Changes on Lights

- adjusted lights so they are called to do something, instead of it 
being handled on game world 
- lights has only coordinate arguments + a table with all other optional 
ones.
- renamed a lot of lights components to radius instaed of range, as it 
was agreed before elsewhere

code/gameworld.lua

@@ -79,19 +79,7 @@ function drawGameworldDarkness()
 	love.graphics.setBlendMode("replace")
 	love.graphics.setColor(0,0,0,0)
 	for _, light in pairs(LoadedObjects.Lights) do
-		if light.range ~= 0 then
+		light:drawClear()
-			local position = {
-				x = (light.pos.x - Camera.pos.x) / game.scale,
-				y = (light.pos.y - Camera.pos.y) / game.scale
-			}
-			local range = (light.range + light.flicker_value) / game.scale
-			love.graphics.circle(
-					"fill",
-					position.x,
-					position.y,
-					range
-				)
-		end
 	end
 	Canvas.Darkness:endDrawing()
 	Canvas.Darkness:draw()
@@ -99,23 +87,7 @@ end
 
 function drawGameworldLights()
 	for _, light in pairs(LoadedObjects.Lights) do
-		if light.range ~= 0 then
+		light:drawShine()
-			love.graphics.setColor(light.color[1],light.color[2],light.color[3],1)
-
-			shader.circle_gradient:send("pos_x",- Camera.pos.x + light.pos.x)
-			shader.circle_gradient:send("pos_y",- Camera.pos.y + light.pos.y)
-			shader.circle_gradient:send("range",light.range)
-			shader.circle_gradient:send("scale",game.scale)
-
-			love.graphics.setShader(shader.circle_gradient)
-			love.graphics.circle(
-				"fill",
-				- Camera.pos.x + light.pos.x,
-				- Camera.pos.y + light.pos.y,
-				light.range
-			)
-			love.graphics.setShader()
-		end
 	end
 end
 

code/lights.lua

@@ -1,16 +1,17 @@
 Light = {}
 LoadedObjects.Lights = {}
 
-function Light:new(x,y,range,flicker,color,lum)
+function Light:new(x,y,data)
 	local o = {}
 	o.pos = {
 		x = x,
 		y = y
 	}
-	o.range = range
+	o.radius = data.radius
-	o.lum = lum or 1
+	o.shine_radius = data.shine_radius or 0
-	o.color = color or {1,1,1}
+	o.lum = data.lum or 1
-	o.flicker_amount = flicker or 2
+	o.color = data.color or {1,1,1}
+	o.flicker_amount = data.flicker or 2
 	o.flicker_value = 0
 	o.dim = 0
 	o.flicker_time = 60/12
@@ -45,3 +46,39 @@ function Light:flicker()
 		self.flicker_value = math.min(math.max(self.flicker_value, -self.flicker_amount), self.flicker_amount)
 	end
 end
+
+function Light:drawClear()
+	if self.radius ~= 0 then
+		local position = {
+			x = (self.pos.x - Camera.pos.x) / game.scale,
+			y = (self.pos.y - Camera.pos.y) / game.scale
+		}
+		local radius = (self.radius + self.flicker_value) / game.scale
+		love.graphics.circle(
+				"fill",
+				position.x,
+				position.y,
+				radius
+			)
+	end
+end
+
+function Light:drawShine()
+	if self.radius ~= 0 then
+		love.graphics.setColor(self.color[1],self.color[2],self.color[3],1)
+
+		shader.circle_gradient:send("pos_x",- Camera.pos.x + self.pos.x)
+		shader.circle_gradient:send("pos_y",- Camera.pos.y + self.pos.y)
+		shader.circle_gradient:send("radius",self.shine_radius)
+		shader.circle_gradient:send("scale",game.scale)
+
+		love.graphics.setShader(shader.circle_gradient)
+		love.graphics.circle(
+			"fill",
+			- Camera.pos.x + self.pos.x,
+			- Camera.pos.y + self.pos.y,
+			self.radius
+		)
+		love.graphics.setShader()
+	end
+end

data/shaders.lua

@@ -2,7 +2,7 @@ shader = {}
 shader.circle_gradient = love.graphics.newShader[[
 	uniform float pos_x;
 	uniform float pos_y;
-	uniform float range;
+	uniform float radius;
 	uniform float scale;
 
 	vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 screen_coords ){
@@ -12,11 +12,13 @@ shader.circle_gradient = love.graphics.newShader[[
 		float distance_x = pos_x - screen_coords.x / scale;
 		float distance_y = pos_y - screen_coords.y / scale;
 		float distance = sqrt( pow(distance_x,2) + pow(distance_y,2) ) ;
-		if (distance < range){
+		if (distance < radius){
-			float alpha = 1-(5*distance/range);
+			float alpha = 1-(5*distance/radius);
 			if (pixel.a > alpha){
 				pixel.a = alpha;
 			}
+		}	else {
+			pixel.a = 0;
 		}
 		return pixel * color * color;
 	}