explore graphics stack

asteroids/main.lua

@@ -67,6 +67,7 @@ local function initState()
         joystick = love.joystick.getJoysticks()[1]
     end
     return {
+        debug = true,
         ship = {
             x = game.width / 2,
             y = game.height / 2,
@@ -204,21 +205,31 @@ function love.gamepadpressed(joystick, button)
 end
 
 function love.draw()
+    if state.debug then
+        love.graphics.setColor(1, 1, 1)
+        love.graphics.line(game.width / 2, 0, game.width / 2, game.height)
+        love.graphics.line(0, game.height / 2, game.width, game.height / 2)
+    end
     for y = -1, 1 do
         for x = -1, 1 do
             love.graphics.origin()
             love.graphics.translate(x * game.width, y * game.height)
+
+            love.graphics.push()
+            love.graphics.translate(state.ship.x, state.ship.y)
             love.graphics.setColor(1, 1, 1)
             local scale = 2 * game.ship.radius / math.max(game.ship.sprite:getWidth(), game.ship.sprite:getHeight())
             love.graphics.draw(game.ship.sprite,
-                state.ship.x,
+                0,
-                state.ship.y,
+                0,
                 (state.ship.facing + phys.tau / 4) % phys.tau,
                 scale,
                 scale,
                 game.ship.sprite:getWidth() / 2,
                 game.ship.sprite:getHeight() / 2
             )
+            -- TODO rocket exhaust
+            love.graphics.pop()
 
             for _, bullet in ipairs(state.bullets) do
                 love.graphics.setColor(0, 1, 0)