From 8830331774102248fccc845056caec1bce786e46 Mon Sep 17 00:00:00 2001
From: Jason Hilder <jhilder95@gmail.com>
Date: Thu, 25 Jun 2026 06:25:44 +0200
Subject: [PATCH] Restructure of code for wasm build.

---
 src/simulator/gui.odin       | 132 ++++++++++++++++++++---------------
 src/simulator/simulator.odin |   3 +
 2 files changed, 79 insertions(+), 56 deletions(-)

diff --git a/src/simulator/gui.odin b/src/simulator/gui.odin
index cda4dd5..8b3b9f2 100644
--- a/src/simulator/gui.odin
+++ b/src/simulator/gui.odin
@@ -3,6 +3,9 @@ package simulator
 import emu "../machine"
 import rl "vendor:raylib"
 
+// Globals
+run: bool
+
 // Window
 WINDOW_WIDTH  :: 1920
 WINDOW_HEIGHT :: 1080
@@ -38,13 +41,17 @@ Layout :: struct {
 	info_box     : rl.Rectangle,
 }
 
-// Initialize main the gui 'window'
-run_gui :: proc(sim: ^Simulator) {
+init :: proc(sim: ^Simulator) {
+	run = true
+
     rl.SetConfigFlags({.WINDOW_RESIZABLE})
     rl.InitWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Octal Cookie - Chip 8 Simulator")
     rl.InitAudioDevice()
     rl.SetTargetFPS(60)
+
+	// Load sound
     beep := rl.LoadSound("./assets/sounds/beep.wav")
+	sim.sound = beep
 
     // Load fonts
     font := rl.LoadFontEx("./assets/fonts/Inter_18pt-Regular.ttf", 18, nil, 0)
@@ -56,71 +63,84 @@ run_gui :: proc(sim: ^Simulator) {
 
     rl.GuiSetFont(font)
     rl.GuiSetStyle(.DEFAULT, i32(rl.GuiDefaultProperty.TEXT_SIZE), 18)
+}
 
-	// Draw each of the components in its own window within the main window
-	for !rl.WindowShouldClose() {
-		// Recalculate layout each frame based on current window size
-		// Pass these down to gui functions so they can setup their sizes?
-		screen_width  := f32(rl.GetScreenWidth())
-		screen_height := f32(rl.GetScreenHeight())
-		sidebar_width := screen_width * 0.20
+update :: proc(sim: ^Simulator) {
+	// Recalculate layout each frame based on current window size
+	// Pass these down to gui functions so they can setup their sizes?
+	screen_width  := f32(rl.GetScreenWidth())
+	screen_height := f32(rl.GetScreenHeight())
+	sidebar_width := screen_width * 0.20
 
-		// set all the layout structs dynamically with the screen size
-		layout := calc_layout(screen_width, screen_height)
+	// set all the layout structs dynamically with the screen size
+	layout := calc_layout(screen_width, screen_height)
 
-		rl.BeginDrawing()
-		rl.ClearBackground(rl.Color{0x18, 0x18, 0x18, 0xFF})
+	rl.BeginDrawing()
+	rl.ClearBackground(rl.Color{0x18, 0x18, 0x18, 0xFF})
 
-		cycles := int(sim.cpu_hz / SIM_FPS)
-		if (!sim.paused) {
-			// Cycle the machine to update memory etc
-			emu.run_machine(sim.machine, cycles)
-			tick_timers(sim, beep)
-		}
-
-		if(sim.paused && sim.step) {
-			// Cycle the machine to update memory etc
-			emu.run_machine(sim.machine, 1)
-			tick_timers(sim, beep)
-			sim.step = false
-		}
-
-		// Top
-		// ------------------------------------------
-		gui_control_bar(layout.control_bar, sim)
-
-		// Left
-		// ------------------------------------------
-		gui_file_loader(layout.file_loader, sim)
-		gui_key_pad(layout.keypad, sim.machine.keypad, sim.font)
-
-		// Center
-		// ------------------------------------------
-		gui_screen(layout.display, sim)
-
-		// Right
-		// ------------------------------------------
-		gui_cpu(layout.cpu, sim)
-
-		// Bottom
-		// ------------------------------------------
-		gui_bottom_panel(layout.bottom_panel, sim)
-		gui_status_bar(layout.status_bar, sim)
-
-		// Info Box
-		// ------------------------------------------
-		gui_info_box(layout.info_box, sim, screen_width, screen_height)
-
-		rl.EndDrawing()
+	cycles := int(sim.cpu_hz / SIM_FPS)
+	if (!sim.paused) {
+		// Cycle the machine to update memory etc
+		emu.run_machine(sim.machine, cycles)
+		tick_timers(sim)
 	}
 
+	if(sim.paused && sim.step) {
+		// Cycle the machine to update memory etc
+		emu.run_machine(sim.machine, 1)
+		tick_timers(sim)
+		sim.step = false
+	}
+
+	// Top
+	// ------------------------------------------
+	gui_control_bar(layout.control_bar, sim)
+
+	// Left
+	// ------------------------------------------
+	gui_file_loader(layout.file_loader, sim)
+	gui_key_pad(layout.keypad, sim.machine.keypad, sim.font)
+
+	// Center
+	// ------------------------------------------
+	gui_screen(layout.display, sim)
+
+	// Right
+	// ------------------------------------------
+	gui_cpu(layout.cpu, sim)
+
+	// Bottom
+	// ------------------------------------------
+	gui_bottom_panel(layout.bottom_panel, sim)
+	gui_status_bar(layout.status_bar, sim)
+
+	// Info Box
+	// ------------------------------------------
+	gui_info_box(layout.info_box, sim, screen_width, screen_height)
+
+	rl.EndDrawing()
+}
+
+shutdown :: proc(sim: ^Simulator) {
 	rl.UnloadFont(sim.font)
-	rl.UnloadSound(beep)
+	rl.UnloadSound(sim.sound)
 	rl.CloseAudioDevice()
 	rl.CloseWindow()
 }
 
-tick_timers :: proc(sim: ^Simulator, beep: rl.Sound) {
+should_run :: proc() -> bool {
+	when ODIN_OS != .JS {
+		if rl.WindowShouldClose() {
+			run = false
+		}
+	}
+
+	return run
+}
+
+tick_timers :: proc(sim: ^Simulator) {
+	beep := sim.sound
+
     if sim.machine.delay_timer > 0 do sim.machine.delay_timer -= 1
     if sim.machine.sound_timer > 0 {
         sim.machine.sound_timer -= 1
diff --git a/src/simulator/simulator.odin b/src/simulator/simulator.odin
index 7b2a483..3c3a69e 100644
--- a/src/simulator/simulator.odin
+++ b/src/simulator/simulator.odin
@@ -29,6 +29,7 @@ Simulator :: struct {
 	cpu_hz:			   f32,
 	info_box:          bool,
 	// GUI
+	sound:			   rl.Sound,
 	font:			   rl.Font,
 	active_tab:		   i32,
 	mem_scroll:        rl.Vector2,
@@ -44,6 +45,7 @@ Simulator :: struct {
 }
 
 // Requires an initilized emulatore System Struct
+/*
 run_simulator :: proc(s: ^emu.System) {
 	sim := Simulator {
 		machine = s,
@@ -56,3 +58,4 @@ run_simulator :: proc(s: ^emu.System) {
 
 	run_gui(&sim)
 }
+*/