Step, reset, tick_timer proc and struct cleanup.

Added a tick_timer proc so the code handles the step neatly.
Added some new struct fields to accomodate this and moved danglings
struct defs into the simulator definition.

src/simulator/gui_control_bar.odin

@@ -1,6 +1,8 @@
 package simulator
 
 import "core:log"
+
+import emu "../machine"
 import rl "vendor:raylib"
 
 gui_control_bar :: proc(rect: rl.Rectangle, sim: ^Simulator) {
@@ -15,7 +17,6 @@ gui_control_bar :: proc(rect: rl.Rectangle, sim: ^Simulator) {
 	if btn(&cursor, rect, BUTTON_HEIGHT, BUTTON_WIDTH, PADDING_X, "RUN") {
 		if sim.rom_loaded {
 			sim.paused = false
-			sim.running = true
 		} else {
 			log.info("no rom selected, can't run")
 		}
@@ -23,12 +24,26 @@ gui_control_bar :: proc(rect: rl.Rectangle, sim: ^Simulator) {
 
 	if btn(&cursor, rect, BUTTON_HEIGHT, BUTTON_WIDTH, PADDING_X, "PAUSE") {
 		sim.paused = true
-		sim.running = false
+	}
+
+	if btn(&cursor, rect, BUTTON_HEIGHT, BUTTON_WIDTH, PADDING_X, "STEP") {
+		if !sim.step do sim.step = true
 	}
 
 	if btn(&cursor, rect, BUTTON_HEIGHT, BUTTON_WIDTH, PADDING_X, "RESET") {
-
+		sim.paused = true
+		sim.disasm_count = 0
+		emu.reset_machine(sim.machine)
 	}
+
+	// @TODO: Get this working
+	slider_rect := rl.Rectangle{
+		x = rect.width - 100 - 50,
+		y = rect.y + 15,
+		width = 100,
+		height = 15
+	}
+	rl.GuiSlider(slider_rect, "Speed  ", nil, &sim.speed_value, 0, 100)
 }
 
 btn :: proc(cursor: ^f32, rect: rl.Rectangle, h, w, gap: f32, label: cstring) -> bool {