add and draw collision to player

obj/game/Player.lua

@@ -7,6 +7,9 @@ local Player = GameObject:extend()
 
 function Player:new(area, x, y, opts)
     Player.super.new(self, area, x, y, opts)
+
+    self.w, self.h = 12, 12
+    self.collider = self.area.world:circle(self.x, self.y, math.floor(self.w*0.8))
 end
 
 function Player:update(dt)
@@ -15,6 +18,10 @@ end
 
 function Player:draw()
     Player.super.draw(self)
+    love.graphics.setColor(1, 0.4, 0.4)
+    self.collider:draw()
+    love.graphics.setColor(1, 1, 1)
+    love.graphics.circle('line', self.x, self.y, self.w)
 end
 
 return Player