From a0222105d751192131337cad11262c4ba16d239f Mon Sep 17 00:00:00 2001
From: DualFroz <me@dualfroz.com>
Date: Thu, 27 Aug 2026 18:43:02 +0200
Subject: [PATCH] feat(render): application window and main loop

---
 game/render/app.py | 96 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 game/render/app.py

diff --git a/game/render/app.py b/game/render/app.py
new file mode 100644
index 0000000..9a51a23
--- /dev/null
+++ b/game/render/app.py
@@ -0,0 +1,96 @@
+import os
+
+import pygame
+
+from ..constants import viewWidth, viewHeight
+from ..sim.inputCommand import InputCommand
+from ..sim.gameState import Game, PLAYING
+from ..sim.builtinLevels import buildAll
+from .renderer import Renderer
+from .theme import renderScale
+from .audioBackend import buildAudioSink
+
+
+def readInput(pressed, edges):
+    return InputCommand(
+        left=pressed[pygame.K_LEFT] or pressed[pygame.K_a],
+        right=pressed[pygame.K_RIGHT] or pressed[pygame.K_d],
+        up=pressed[pygame.K_UP] or pressed[pygame.K_w],
+        down=pressed[pygame.K_DOWN] or pressed[pygame.K_s],
+        jump=pygame.K_SPACE in edges or pygame.K_z in edges,
+        jumpHeld=pressed[pygame.K_SPACE] or pressed[pygame.K_z],
+        dash=pygame.K_LSHIFT in edges or pygame.K_x in edges,
+        run=pressed[pygame.K_LSHIFT],
+        attack=pygame.K_c in edges,
+        pause=pygame.K_ESCAPE in edges or pygame.K_p in edges,
+        confirm=pygame.K_RETURN in edges or pygame.K_SPACE in edges,
+    )
+
+
+def attachAudio(game):
+    if game.world is not None:
+        game.world.audio.setSink(buildAudioSink())
+
+
+def runPlay():
+    pygame.init()
+    pygame.font.init()
+    screen = pygame.display.set_mode((viewWidth * renderScale, viewHeight * renderScale))
+    pygame.display.set_caption("Pixel Platformer")
+    clock = pygame.time.Clock()
+
+    renderer = Renderer()
+    game = Game(buildAll())
+    audioSink = buildAudioSink()
+
+    running = True
+    lastMode = None
+    while running:
+        edges = set()
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                running = False
+            elif event.type == pygame.KEYDOWN:
+                edges.add(event.key)
+        pressed = pygame.key.get_pressed()
+        command = readInput(pressed, edges)
+        game.update(command)
+
+        if game.world is not None and game.mode == PLAYING and lastMode != PLAYING:
+            game.world.audio.setSink(audioSink)
+        lastMode = game.mode
+
+        world = game.world
+        if world is not None:
+            frame = renderer.present(world, None if game.mode == PLAYING else game.mode)
+        else:
+            frame = renderer.present(_placeholderWorld(game), game.mode)
+        screen.blit(frame, (0, 0))
+        pygame.display.flip()
+        clock.tick(60)
+    pygame.quit()
+
+
+def _placeholderWorld(game):
+    game.startLevel(0)
+    return game.world
+
+
+def runScreenshot(path, frames):
+    os.environ.setdefault("SDL_VIDEODRIVER", "dummy")
+    os.environ.setdefault("SDL_AUDIODRIVER", "dummy")
+    pygame.init()
+    pygame.font.init()
+
+    levels = buildAll()
+    game = Game(levels)
+    game.start()
+    for frame in range(frames):
+        command = InputCommand(right=12 <= frame < 40, jump=frame in (14, 30), jumpHeld=14 <= frame < 20)
+        game.update(command)
+
+    renderer = Renderer()
+    surface = renderer.present(game.world, None)
+    pygame.image.save(surface, path)
+    pygame.quit()
+    print("wrote %s (%dx%d)" % (path, surface.get_width(), surface.get_height()))