chore: remove Cycle struct and begin scheduler design

src/emu.rs

@@ -1,14 +1,14 @@
 use crate::cpu::Cpu as SM83;
-use crate::instruction::cycle::Cycle;
 use crate::joypad;
 use crate::ppu::Ppu;
+use crate::Cycle;
 use anyhow::Result;
 use gilrs::Gilrs;
 use std::time::Duration;
 use winit_input_helper::WinitInputHelper;
 
 pub const SM83_CYCLE_TIME: Duration = Duration::from_nanos(1_000_000_000 / SM83_CLOCK_SPEED);
-pub const CYCLES_IN_FRAME: Cycle = Cycle::new(456 * 154); // 456 Cycles times 154 scanlines
+pub const CYCLES_IN_FRAME: Cycle = 456 * 154; // 456 Cycles times 154 scanlines
 pub(crate) const SM83_CLOCK_SPEED: u64 = 0x40_0000; // Hz which is 4.194304Mhz
 const DEFAULT_TITLE: &str = "DMG-01 Emulator";
 
@@ -34,7 +34,7 @@ pub fn run(
     input: &WinitInputHelper,
     target: Cycle,
 ) -> Cycle {
-    let mut elapsed = Cycle::new(0);
+    let mut elapsed = 0;
 
     if let Some(event) = gamepad.next_event() {
         joypad::handle_gamepad_input(game_boy.joypad_mut(), event);
@@ -49,7 +49,7 @@ pub fn run(
 }
 
 pub fn run_frame(game_boy: &mut SM83, gamepad: &mut Gilrs, input: &WinitInputHelper) -> Cycle {
-    let mut elapsed = Cycle::new(0);
+    let mut elapsed = 0;
 
     if let Some(event) = gamepad.next_event() {
         joypad::handle_gamepad_input(game_boy.joypad_mut(), event);