1 files changed, 82 insertions, 9 deletions

diff --git a/app.c b/app.c
index c1010d4..b82c588 100644
--- a/app.c
+++ b/app.c
@@ -13,15 +13,73 @@
 App app = {0};
 
 static void
+app_prepare_view(void) {
+	if (app.scr_tex.texture.width != app.rw ||
+			app.scr_tex.texture.height != app.rh) {
+		if (app.scr_tex.id) {
+			UnloadRenderTexture(app.scr_tex);
+		}
+
+		app.scr_tex = LoadRenderTexture(app.rw, app.rh);
+		SetTextureFilter(app.scr_tex.texture, TEXTURE_FILTER_POINT);
+	}
+
+	f32 width = MAX(GetScreenWidth(), 1);
+	f32 height = MAX(GetScreenHeight(), 1);
+	f32 scale = fminf(
+		width / app.rw, height / app.rh);
+
+	app.scr_rec = (Rect){
+		.x = (width - app.rw * scale) * 0.5f,
+		.y = (height - app.rh * scale) * 0.5f,
+		.width = app.rw * scale,
+		.height = app.rh * scale,
+	};
+}
+
+Ray
+app_screen_ray(Vec2 position, Camera camera) {
+	position.x = (position.x - app.scr_rec.x) *
+		app.rw / app.scr_rec.width;
+	position.y = (position.y - app.scr_rec.y) *
+		app.rh / app.scr_rec.height;
+
+	return GetScreenToWorldRayEx(
+		position, camera, app.rw, app.rh);
+}
+
+Vec2
+app_world_to_screen(Vec3 position, Camera camera) {
+	Vec2 point = GetWorldToScreenEx(
+		position, camera, app.rw, app.rh);
+
+	return (Vec2){
+		app.scr_rec.x + point.x * app.scr_rec.width / app.rw,
+		app.scr_rec.y + point.y * app.scr_rec.height / app.rh,
+	};
+}
+
+static void
+app_clear_depth(void) {
+	rlDrawRenderBatchActive();
+	rlEnableDepthMask();
+	rlColorMask(false, false, false, false);
+	rlClearScreenBuffers();
+	rlColorMask(true, true, true, true);
+}
+
+static void
 app_init(void) {
 	SetTraceLogLevel(LOG_WARNING);
-	SetConfigFlags(FLAG_MSAA_4X_HINT |
-	               FLAG_VSYNC_HINT |
+	SetConfigFlags(
+	               // FLAG_VSYNC_HINT |
 	               FLAG_WINDOW_RESIZABLE);
 
 	InitWindow(1280, 720, "Fun Game");
+	app.rw = GetScreenWidth() / 2;
+	app.rh = GetScreenHeight() / 2;
 	SetExitKey(KEY_NULL);
-	SetTargetFPS(60);
+	// SetTargetFPS(60);
 	app.run = true;
 
 	FLAG_SET(app.flags, BIT(APP_FLAG_EDIT));
@@ -38,6 +96,7 @@ app_init(void) {
 
 static void
 app_exit(void) {
+	UnloadRenderTexture(app.scr_tex);
 	editor_exit();
 	game_exit();
 	entity_system_exit();
@@ -51,6 +110,7 @@ app_loop(void) {
 	app.run = !WindowShouldClose();
 	f64 frame_start = GetTime();
 
+	app_prepare_view();
 	entity_system_update();
 
 	/* this is some hypothetical bullshit, probably will change */
@@ -63,25 +123,38 @@ app_loop(void) {
 	env_update();
 
 	BeginDrawing();
+	ClearBackground(BLACK);
+
+	BeginTextureMode(app.scr_tex);
 	ClearBackground(RAYWHITE);
 	env_draw_sky(main_cam.cam);
 
 	BeginMode3D(main_cam.cam);
 	entity_system_draw_3d();
-	EndMode3D();
 
 	if (FLAG_CHECK(app.flags, BIT(APP_FLAG_DEBUG)) ||
-		FLAG_CHECK(app.flags, BIT(APP_FLAG_EDIT))) {
-		BeginMode3D(main_cam.cam);
-		rlDisableDepthTest();
+			FLAG_CHECK(app.flags, BIT(APP_FLAG_EDIT))) {
+		app_clear_depth();
+		rlEnableDepthTest();
 		editor_draw_3d();
-		EndMode3D();
 	}
 
+	EndMode3D();
+	EndTextureMode();
+
+	DrawTexturePro(app.scr_tex.texture,
+		(Rect){
+			0, 0,
+			(f32)app.scr_tex.texture.width,
+			-(f32)app.scr_tex.texture.height,
+		},
+		app.scr_rec, (Vec2){0}, 0, WHITE);
+
 	editor_draw_ui();
 
-	app.frame_time_ms = (GetTime() - frame_start) * 1000.0f;
+	// app.frame_time_ms = (GetTime() - frame_start) * 1000.0f;
 	EndDrawing();
+	app.frame_time_ms = (GetTime() - frame_start) * 1000.0f;
 }
 
 int