From 00636d65a9983934f3aaf027deec25662fc1cff8 Mon Sep 17 00:00:00 2001
From: veclavtalica <veclavtalica@tutamail.com>
Date: Tue, 4 Feb 2025 00:24:31 +0300
Subject: [PATCH] fix resizing events, clean up the code

---
 src/twn_loop.c | 60 +++++++++++++-------------------------------------
 1 file changed, 15 insertions(+), 45 deletions(-)

diff --git a/src/twn_loop.c b/src/twn_loop.c
index 86e5395..f753408 100644
--- a/src/twn_loop.c
+++ b/src/twn_loop.c
@@ -24,46 +24,7 @@
 static SDL_Thread *opengl_load_thread;
 
 
-static int event_callback(void *userdata, SDL_Event *event) {
-    (void)userdata;
-
-    switch (event->type) {
-    case SDL_WINDOWEVENT:
-        if (event->window.windowID != ctx.window_id)
-            break;
-
-        switch (event->window.event) {
-        case SDL_WINDOWEVENT_SIZE_CHANGED:
-            ctx.window_dims.x = (float)event->window.data1;
-            ctx.window_dims.y = (float)event->window.data2;
-            ctx.resync_flag = true;
-            break;
-
-        case SDL_WINDOWEVENT_FOCUS_LOST: {
-            ctx.window_mouse_resident = false;
-            break;
-        }
-
-        case SDL_WINDOWEVENT_FOCUS_GAINED: {
-            ctx.window_mouse_resident = true;
-            break;
-        }
-
-        default:
-            break;
-        }
-
-        break;
-
-    default:
-        break;
-    }
-
-    /* ignored */
-    return 0;
-}
-
-
+/* note: it drives most of IO implicitly, such as audio callbacks */
 static void poll_events(void) {
     SDL_Event e;
 
@@ -81,9 +42,22 @@ static void poll_events(void) {
 
             switch (e.window.event) {
             case SDL_WINDOWEVENT_SIZE_CHANGED:
+                ctx.window_dims.x = (float)e.window.data1;
+                ctx.window_dims.y = (float)e.window.data2;
+                ctx.resync_flag = true;
                 ctx.window_size_has_changed = true;
                 break;
 
+            case SDL_WINDOWEVENT_FOCUS_LOST: {
+                ctx.window_mouse_resident = false;
+                break;
+            }
+
+            case SDL_WINDOWEVENT_FOCUS_GAINED: {
+                ctx.window_mouse_resident = true;
+                break;
+            }
+
             default:
                 break;
             }
@@ -547,9 +521,6 @@ static bool initialize(void) {
     ctx.game.resolution.x = (float)ctx.base_render_width;
     ctx.game.resolution.y = (float)ctx.base_render_height;
 
-    /* add a watcher for immediate updates on window size */
-    SDL_AddEventWatch(event_callback, NULL);
-
     /* random seeding */
     /* SDL_GetPerformanceCounter returns some platform-dependent number. */
     /* it should vary between game instances. i checked! random enough for me. */
@@ -584,8 +555,7 @@ static bool initialize(void) {
         ctx.time_averager[i] = ctx.desired_frametime;
     }
 
-    /* rendering */
-    /* configuration */
+    /* engine configuration */
     {
         toml_datum_t datum_texture_atlas_size = toml_int_in(engine, "texture_atlas_size");
         if (!datum_texture_atlas_size.ok) {