From d5b4bfc77f054a41f1f5feb4971fcefbb4d6c94a Mon Sep 17 00:00:00 2001
From: treeform <starplant@gmail.com>
Date: Mon, 8 Dec 2025 16:23:55 -0800
Subject: [PATCH] make window.run() use emscripten_set_main_loop

---
 src/windy/platforms/emscripten/emdefs.nim   | 1 -
 src/windy/platforms/emscripten/platform.nim | 9 +++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/windy/platforms/emscripten/emdefs.nim b/src/windy/platforms/emscripten/emdefs.nim
index 8e418de..b0194f1 100644
--- a/src/windy/platforms/emscripten/emdefs.nim
+++ b/src/windy/platforms/emscripten/emdefs.nim
@@ -8,7 +8,6 @@ proc emscripten_set_main_loop*(f: proc() {.cdecl.}, a: cint, b: bool) {.importc.
 # Additional Emscripten functions that might be needed
 proc emscripten_cancel_main_loop*() {.importc.}
 proc emscripten_get_now*(): cdouble {.importc.}
-proc emscripten_request_animation_frame_loop*(f: proc(time: cdouble): cint {.cdecl.}, userData: pointer): cint {.importc.}
 proc emscripten_sleep*(ms: cuint) {.importc.}
 
 # WebGL bindings
diff --git a/src/windy/platforms/emscripten/platform.nim b/src/windy/platforms/emscripten/platform.nim
index 053f9ac..eba0982 100644
--- a/src/windy/platforms/emscripten/platform.nim
+++ b/src/windy/platforms/emscripten/platform.nim
@@ -100,6 +100,15 @@ proc pollEvents*() =
   pollHttp()
   emscripten_sleep(0)
 
+proc run*(window: Window) =
+  proc mainLoop() {.cdecl.} =
+    if mainWindow != nil:
+      if mainWindow.onFrame != nil:
+        mainWindow.onFrame()
+      mainWindow.state.perFrame = PerFrame()
+    pollHttp()
+  emscripten_set_main_loop(mainLoop, 0, true)
+
 proc size*(window: Window): IVec2 =
   # Get the size of the canvas.
   result.x = get_window_width() * get_device_pixel_ratio().int32