From cd3d19443e80ed1d328dd0cb466906bb90e3baae Mon Sep 17 00:00:00 2001
From: Federico Igne <git@federicoigne.com>
Date: Sun, 5 Mar 2023 21:34:49 +0000
Subject: perf: do not draw entites off the screen

---
 raccoon.lua | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/raccoon.lua b/raccoon.lua
index 18939a1..fac2f03 100644
--- a/raccoon.lua
+++ b/raccoon.lua
@@ -614,23 +614,23 @@ end
 
 local DrawingSystem = System(Pos)
 function DrawingSystem:exec(entity,level)
-    local x, y = entity.get_component[Pos]:to_screen(level)
-    if entity.has_component[Pixel] then
-        local c = entity.get_component[Pixel].color
-        pix(x, y, c)
-    elseif entity.has_component[Sprite] then
-        local sprite = entity.get_component[Sprite]
-        spr(sprite.i, x, y, 0)
-    end
-    -- Effects
-    local effects = { CircleEffect }
-    for _,e in ipairs(effects) do
-        if entity.has_component[e] then
-            local e = entity.get_component[e]
-            e:draw(x,y)
+    local x, y = entity:get_pos():to_screen(level)
+    if 0 <= x and x <= util.screen.width then
+        if entity:has_pixel() then
+            local c = entity:get_pixel().color
+            pix(x, y, c)
+        elseif entity:has_sprite() then
+            local sprite = entity:get_sprite()
+            spr(sprite.i, x, y, 0)
+        end
+        -- Effects
+        local effects = { "CircleEffect" }
+        for _,e in ipairs(effects) do
+            if Entity["has_"..e:lower()](entity) then
+                Entity["get_"..e:lower()](entity):draw(x,y)
+            end
         end
     end
-
 end
 function DrawingSystem:draw(game)
     local level = game.levels[game.level]
-- 
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