[kaka/rust-sdl-test.git] / src / core / game.rs

use AppState;
use ActiveState;
use common::{Point2D, Radians};
use core::app::StateChange;
use core::controller::Controller;
use core::controller::ControllerManager;
use core::level::Level;
use core::render::Renderer;
use point;
use sdl2::event::Event;
use sdl2::joystick::PowerLevel;
use sdl2::keyboard::Keycode;
use sdl2::rect::Rect;
use sprites::SpriteManager;
use std::cell::RefCell;
use std::rc::Rc;
use time::Duration;

////////// GAMESTATE ///////////////////////////////////////////////////////////

#[derive(Default)]
pub struct GameState {
    world: World,
}

impl GameState {
    pub fn new() -> Self {
	GameState {
	    world: World::new(),
	}
    }
}

impl AppState for GameState {
    fn enter(&mut self, ctrl_man: &ControllerManager) {
	for (_k, v) in ctrl_man.controllers.iter() {
	    self.world.add(Box::new(Character::new(v.clone())));
	}
    }

    fn leave(&mut self) {}

    fn update(&mut self, dt: Duration) -> Option<StateChange> {
	self.world.update(dt);
	None
    }

    fn render(&mut self, renderer: &mut Renderer, sprites: &SpriteManager) {
	self.world.render(renderer, sprites);
    }

    fn handle_event(&mut self, event: Event) -> Option<StateChange> {
	match event {
	    Event::KeyDown { keycode: Some(Keycode::Escape), .. } => {
		return Some(StateChange::Pop)
            }
	    Event::KeyDown { keycode: Some(Keycode::Return), .. } => {
		return Some(StateChange::Push(Box::new(ActiveState::new((800, 600)))))
            }
	    Event::KeyDown { keycode: Some(Keycode::Space), .. } => {
		self.world.level.regenerate();
	    }
	    Event::KeyDown { keycode: Some(Keycode::KpPlus), .. } => {
		self.world.level.increase_iteration();
	    }
	    Event::KeyDown { keycode: Some(Keycode::KpMinus), .. } => {
		self.world.level.decrease_iteration();
	    }
	    Event::KeyDown { keycode: Some(Keycode::KpEnter), .. } => {
		self.world.level.filter_regions();
	    }
	    _ => {}
	}
	None
    }
}

////////// WORLD ///////////////////////////////////////////////////////////////

#[derive(Default)]
pub struct World {
    level: Level,
    objects: Objects,
}

impl World {
    pub fn new() -> Self {
	World {
	    level: Level::new(point!(0.0, 0.1)),
	    ..Default::default()
	}
    }

    pub fn update(&mut self, dt: Duration) {
	let mut breeding_ground = vec!();

	for i in (0..self.objects.len()).rev() {
	    if self.objects[i].update(&mut breeding_ground, &self.level, dt) == Dead {
		self.objects.remove(i); // swap_remove is more efficient, but changes the order of the array
	    }
	}

	for o in breeding_ground {
	    self.add(o);
	}

	println!("\x1b[Kobject count: {}\x1b[1A", self.objects.len()); // clear line, print, move cursor up
    }

    pub fn render(&mut self, renderer: &mut Renderer, sprites: &SpriteManager) {
	self.level.render(renderer, sprites);
	for o in &mut self.objects {
	    o.render(renderer, sprites);
	}
    }

    pub fn add(&mut self, object: Box<dyn Object>) {
	self.objects.push(object);
    }
}

////////// OBJECT //////////////////////////////////////////////////////////////

type Objects = Vec<Box<dyn Object>>;

pub trait Object {
    fn update(&mut self, objects: &mut Objects, lvl: &Level, dt: Duration) -> ObjectState;
    fn render(&self, _renderer: &mut Renderer, _sprites: &SpriteManager) {}
}

#[derive(PartialEq)]
pub enum ObjectState { Alive, Dead }
use self::ObjectState::*;


pub trait Physical {}
pub trait Drawable {}

////////// CHARACTER ///////////////////////////////////////////////////////////

pub struct Character {
    ctrl: Rc<RefCell<Controller>>,
    pos: Point2D<f64>,
    vel: Point2D<f64>,
}

impl Character {
    pub fn new(ctrl: Rc<RefCell<Controller>>) -> Self {
	Character {
	    ctrl,
	    pos: point!(300.0, 300.0),
	    vel: point!(0.0, 0.0),
	}
    }
}

impl Object for Character {
    fn update(&mut self, objects: &mut Objects, lvl: &Level, dt: Duration) -> ObjectState {
	let ctrl = self.ctrl.borrow();

	let x = (self.pos.x / lvl.grid.cell_size as f64).min(lvl.grid.width as f64 - 1.0).max(0.0) as usize;
	let y = (self.pos.y / lvl.grid.cell_size as f64).min(lvl.grid.height as f64 - 1.0).max(0.0) as usize;
	if lvl.grid.cells[x][y] {
	    self.vel += lvl.gravity;
	    if self.vel.y > 0.0 && !(ctrl.mov.down() && ctrl.jump.is_pressed) {
		self.vel.y = 0.0;
		self.vel.x *= 0.9;
	    }

	    if !ctrl.mov.down() {
		if ctrl.jump.is_pressed && !ctrl.jump.was_pressed {
		    self.vel.y = -5.0;
		}
	    }
	} else {
	    self.vel += lvl.gravity;
	}
	self.pos += self.vel;

	if ctrl.shoot.is_pressed {
	    use rand::distributions::{Distribution, Normal};
	    let normal = Normal::new(0.0, 0.1);
	    let direction = if ctrl.aim.to_point().length() > 0.1 { ctrl.aim.to_point() } else { ctrl.mov.to_point() };
	    for _i in 0..100 {
		objects.push(Box::new(Boll {
		    pos: self.pos,
		    vel: direction * (10.0 + rand::random::<f64>()) + point!(normal.sample(&mut rand::thread_rng()), normal.sample(&mut rand::thread_rng())) + self.vel,
		    bounces: 2,
		}));
	    }
	    ctrl.rumble(1.0, dt);
	    self.vel -= direction * 0.1;
	}

	if ctrl.start.is_pressed && !ctrl.start.was_pressed {
	    match ctrl.device.power_level() {
		Ok(PowerLevel::Unknown) => { println!("power level unknown"); }
		Ok(PowerLevel::Empty) => { println!("power level empty"); }
		Ok(PowerLevel::Low) => { println!("power level low"); }
		Ok(PowerLevel::Medium) => { println!("power level medium"); }
		Ok(PowerLevel::Full) => { println!("power level full"); }
		Ok(PowerLevel::Wired) => { println!("power level wired"); }
		Err(_) => {}
	    };
	}

	match ctrl.mov.x {
	    v if v < -0.9 && self.vel.x > -5.0 => { self.vel.x -= 0.5 }
	    v if v > 0.9 && self.vel.x < 5.0 => { self.vel.x += 0.5 }
	    _ => {}
	}

	Alive
    }

    fn render(&self, renderer: &mut Renderer, sprites: &SpriteManager) {
        let block = sprites.get("mario");
	let size = 32;
        renderer.blit(block, None, Rect::new(self.pos.x as i32 - size as i32 / 2, self.pos.y as i32 - size as i32, size, size));

	let ctrl = &self.ctrl.borrow();
	let l = 300.0;
	let pos = (self.pos.x as i32, self.pos.y as i32);
	// // axis values
	// let p = (self.pos + ctrl.aim.to_axis_point() * l).to_i32().into();
	// renderer.draw_line(pos, p, (0, 255, 0));
	// draw_cross(renderer, p);
	// values limited to unit vector
	let p = (self.pos + ctrl.aim.to_point() * l).to_i32().into();
	renderer.draw_line(pos, p, (255, 0, 0));
	draw_cross(renderer, p);
	let p = (self.pos + ctrl.mov.to_point() * l).to_i32().into();
	renderer.draw_line(pos, p, (0, 255, 0));
	draw_cross(renderer, p);
	// // circle values
	// let p = (self.pos + Point2D::from(ctrl.aim.a) * l).to_i32().into();
	// renderer.draw_line(pos, p, (0, 0, 255));
	// draw_cross(renderer, p);
    }
}

fn draw_cross(renderer: &mut Renderer, p: (i32, i32)) {
    renderer.canvas().draw_line((p.0 - 5, p.1), (p.0 + 5, p.1)).unwrap();
    renderer.canvas().draw_line((p.0, p.1 - 5), (p.0, p.1 + 5)).unwrap();
}

////////// BOLL ////////////////////////////////////////////////////////////////

pub struct Boll {
    pos: Point2D<f64>,
    vel: Point2D<f64>,
    bounces: u8,
}

impl Object for Boll {
    fn update(&mut self, objects: &mut Objects, lvl: &Level, _dt: Duration) -> ObjectState {
	self.vel += lvl.gravity;
	self.pos += self.vel;

	let x = (self.pos.x / lvl.grid.cell_size as f64).min(lvl.grid.width as f64 - 1.0).max(0.0) as usize;
	let y = (self.pos.y / lvl.grid.cell_size as f64).min(lvl.grid.height as f64 - 1.0).max(0.0) as usize;
	if lvl.grid.cells[x][y] {
	    if self.bounces == 0 {
		return Dead
	    }
	    self.vel *= -0.25;
	    self.pos += self.vel;
	    self.bounces -= 1;
	    use rand::distributions::{Distribution, Normal};
	    let mut rng = rand::thread_rng();
	    let a = Radians(self.vel.to_radians().0 + Normal::new(0.0, 0.75).sample(&mut rng));
	    objects.push(Box::new(Boll {
	    	vel: Point2D::from(a) * Normal::new(1.0, 0.25).sample(&mut rng) * self.vel.length(),
	    	..*self
	    }));
	}

	Alive
    }

    fn render(&self, renderer: &mut Renderer, _sprites: &SpriteManager) {
        let block = _sprites.get("block");
	let size = 4 + self.bounces * 6;
        renderer.blit(block, None, Rect::new(self.pos.x as i32 - size as i32 / 2, self.pos.y as i32 - size as i32 / 2, size as u32, size as u32));
	// renderer.canvas().set_draw_color((0, self.bounces * 100, 255));
	// renderer.canvas().draw_point((self.pos.x as i32, self.pos.y as i32)).unwrap();
    }
}
Commit	Line	Data
	1	use AppState;
	2	use ActiveState;
	3	use common::{Point2D, Radians};
	4	use core::app::StateChange;
	5	use core::controller::Controller;
	6	use core::controller::ControllerManager;
	7	use core::level::Level;
	8	use core::render::Renderer;
	9	use point;
	10	use sdl2::event::Event;
	11	use sdl2::joystick::PowerLevel;
	12	use sdl2::keyboard::Keycode;
	13	use sdl2::rect::Rect;
	14	use sprites::SpriteManager;
	15	use std::cell::RefCell;
	16	use std::rc::Rc;
	17	use time::Duration;
	18
	19	////////// GAMESTATE ///////////////////////////////////////////////////////////
	20
	21	#[derive(Default)]
	22	pub struct GameState {
	23	world: World,
	24	}
	25
	26	impl GameState {
	27	pub fn new() -> Self {
	28	GameState {
	29	world: World::new(),
	30	}
	31	}
	32	}
	33
	34	impl AppState for GameState {
	35	fn enter(&mut self, ctrl_man: &ControllerManager) {
	36	for (_k, v) in ctrl_man.controllers.iter() {
	37	self.world.add(Box::new(Character::new(v.clone())));
	38	}
	39	}
	40
	41	fn leave(&mut self) {}
	42
	43	fn update(&mut self, dt: Duration) -> Option<StateChange> {
	44	self.world.update(dt);
	45	None
	46	}
	47
	48	fn render(&mut self, renderer: &mut Renderer, sprites: &SpriteManager) {
	49	self.world.render(renderer, sprites);
	50	}
	51
	52	fn handle_event(&mut self, event: Event) -> Option<StateChange> {
	53	match event {
	54	Event::KeyDown { keycode: Some(Keycode::Escape), .. } => {
	55	return Some(StateChange::Pop)
	56	}
	57	Event::KeyDown { keycode: Some(Keycode::Return), .. } => {
	58	return Some(StateChange::Push(Box::new(ActiveState::new((800, 600)))))
	59	}
	60	Event::KeyDown { keycode: Some(Keycode::Space), .. } => {
	61	self.world.level.regenerate();
	62	}
	63	Event::KeyDown { keycode: Some(Keycode::KpPlus), .. } => {
	64	self.world.level.increase_iteration();
	65	}
	66	Event::KeyDown { keycode: Some(Keycode::KpMinus), .. } => {
	67	self.world.level.decrease_iteration();
	68	}
	69	Event::KeyDown { keycode: Some(Keycode::KpEnter), .. } => {
	70	self.world.level.filter_regions();
	71	}
	72	_ => {}
	73	}
	74	None
	75	}
	76	}
	77
	78	////////// WORLD ///////////////////////////////////////////////////////////////
	79
	80	#[derive(Default)]
	81	pub struct World {
	82	level: Level,
	83	objects: Objects,
	84	}
	85
	86	impl World {
	87	pub fn new() -> Self {
	88	World {
	89	level: Level::new(point!(0.0, 0.1)),
	90	..Default::default()
	91	}
	92	}
	93
	94	pub fn update(&mut self, dt: Duration) {
	95	let mut breeding_ground = vec!();
	96
	97	for i in (0..self.objects.len()).rev() {
	98	if self.objects[i].update(&mut breeding_ground, &self.level, dt) == Dead {
	99	self.objects.remove(i); // swap_remove is more efficient, but changes the order of the array
	100	}
	101	}
	102
	103	for o in breeding_ground {
	104	self.add(o);
	105	}
	106
	107	println!("\x1b[Kobject count: {}\x1b[1A", self.objects.len()); // clear line, print, move cursor up
	108	}
	109
	110	pub fn render(&mut self, renderer: &mut Renderer, sprites: &SpriteManager) {
	111	self.level.render(renderer, sprites);
	112	for o in &mut self.objects {
	113	o.render(renderer, sprites);
	114	}
	115	}
	116
	117	pub fn add(&mut self, object: Box<dyn Object>) {
	118	self.objects.push(object);
	119	}
	120	}
	121
	122	////////// OBJECT //////////////////////////////////////////////////////////////
	123
	124	type Objects = Vec<Box<dyn Object>>;
	125
	126	pub trait Object {
	127	fn update(&mut self, objects: &mut Objects, lvl: &Level, dt: Duration) -> ObjectState;
	128	fn render(&self, _renderer: &mut Renderer, _sprites: &SpriteManager) {}
	129	}
	130
	131	#[derive(PartialEq)]
	132	pub enum ObjectState { Alive, Dead }
	133	use self::ObjectState::*;
	134
	135
	136	pub trait Physical {}
	137	pub trait Drawable {}
	138
	139	////////// CHARACTER ///////////////////////////////////////////////////////////
	140
	141	pub struct Character {
	142	ctrl: Rc<RefCell<Controller>>,
	143	pos: Point2D<f64>,
	144	vel: Point2D<f64>,
	145	}
	146
	147	impl Character {
	148	pub fn new(ctrl: Rc<RefCell<Controller>>) -> Self {
	149	Character {
	150	ctrl,
	151	pos: point!(300.0, 300.0),
	152	vel: point!(0.0, 0.0),
	153	}
	154	}
	155	}
	156
	157	impl Object for Character {
	158	fn update(&mut self, objects: &mut Objects, lvl: &Level, dt: Duration) -> ObjectState {
	159	let ctrl = self.ctrl.borrow();
	160
	161	let x = (self.pos.x / lvl.grid.cell_size as f64).min(lvl.grid.width as f64 - 1.0).max(0.0) as usize;
	162	let y = (self.pos.y / lvl.grid.cell_size as f64).min(lvl.grid.height as f64 - 1.0).max(0.0) as usize;
	163	if lvl.grid.cells[x][y] {
	164	self.vel += lvl.gravity;
	165	if self.vel.y > 0.0 && !(ctrl.mov.down() && ctrl.jump.is_pressed) {
	166	self.vel.y = 0.0;
	167	self.vel.x *= 0.9;
	168	}
	169
	170	if !ctrl.mov.down() {
	171	if ctrl.jump.is_pressed && !ctrl.jump.was_pressed {
	172	self.vel.y = -5.0;
	173	}
	174	}
	175	} else {
	176	self.vel += lvl.gravity;
	177	}
	178	self.pos += self.vel;
	179
	180	if ctrl.shoot.is_pressed {
	181	use rand::distributions::{Distribution, Normal};
	182	let normal = Normal::new(0.0, 0.1);
	183	let direction = if ctrl.aim.to_point().length() > 0.1 { ctrl.aim.to_point() } else { ctrl.mov.to_point() };
	184	for _i in 0..100 {
	185	objects.push(Box::new(Boll {
	186	pos: self.pos,
	187	vel: direction * (10.0 + rand::random::<f64>()) + point!(normal.sample(&mut rand::thread_rng()), normal.sample(&mut rand::thread_rng())) + self.vel,
	188	bounces: 2,
	189	}));
	190	}
	191	ctrl.rumble(1.0, dt);
	192	self.vel -= direction * 0.1;
	193	}
	194
	195	if ctrl.start.is_pressed && !ctrl.start.was_pressed {
	196	match ctrl.device.power_level() {
	197	Ok(PowerLevel::Unknown) => { println!("power level unknown"); }
	198	Ok(PowerLevel::Empty) => { println!("power level empty"); }
	199	Ok(PowerLevel::Low) => { println!("power level low"); }
	200	Ok(PowerLevel::Medium) => { println!("power level medium"); }
	201	Ok(PowerLevel::Full) => { println!("power level full"); }
	202	Ok(PowerLevel::Wired) => { println!("power level wired"); }
	203	Err(_) => {}
	204	};
	205	}
	206
	207	match ctrl.mov.x {
	208	v if v < -0.9 && self.vel.x > -5.0 => { self.vel.x -= 0.5 }
	209	v if v > 0.9 && self.vel.x < 5.0 => { self.vel.x += 0.5 }
	210	_ => {}
	211	}
	212
	213	Alive
	214	}
	215
	216	fn render(&self, renderer: &mut Renderer, sprites: &SpriteManager) {
	217	let block = sprites.get("mario");
	218	let size = 32;
	219	renderer.blit(block, None, Rect::new(self.pos.x as i32 - size as i32 / 2, self.pos.y as i32 - size as i32, size, size));
	220
	221	let ctrl = &self.ctrl.borrow();
	222	let l = 300.0;
	223	let pos = (self.pos.x as i32, self.pos.y as i32);
	224	// // axis values
	225	// let p = (self.pos + ctrl.aim.to_axis_point() * l).to_i32().into();
	226	// renderer.draw_line(pos, p, (0, 255, 0));
	227	// draw_cross(renderer, p);
	228	// values limited to unit vector
	229	let p = (self.pos + ctrl.aim.to_point() * l).to_i32().into();
	230	renderer.draw_line(pos, p, (255, 0, 0));
	231	draw_cross(renderer, p);
	232	let p = (self.pos + ctrl.mov.to_point() * l).to_i32().into();
	233	renderer.draw_line(pos, p, (0, 255, 0));
	234	draw_cross(renderer, p);
	235	// // circle values
	236	// let p = (self.pos + Point2D::from(ctrl.aim.a) * l).to_i32().into();
	237	// renderer.draw_line(pos, p, (0, 0, 255));
	238	// draw_cross(renderer, p);
	239	}
	240	}
	241
	242	fn draw_cross(renderer: &mut Renderer, p: (i32, i32)) {
	243	renderer.canvas().draw_line((p.0 - 5, p.1), (p.0 + 5, p.1)).unwrap();
	244	renderer.canvas().draw_line((p.0, p.1 - 5), (p.0, p.1 + 5)).unwrap();
	245	}
	246
	247	////////// BOLL ////////////////////////////////////////////////////////////////
	248
	249	pub struct Boll {
	250	pos: Point2D<f64>,
	251	vel: Point2D<f64>,
	252	bounces: u8,
	253	}
	254
	255	impl Object for Boll {
	256	fn update(&mut self, objects: &mut Objects, lvl: &Level, _dt: Duration) -> ObjectState {
	257	self.vel += lvl.gravity;
	258	self.pos += self.vel;
	259
	260	let x = (self.pos.x / lvl.grid.cell_size as f64).min(lvl.grid.width as f64 - 1.0).max(0.0) as usize;
	261	let y = (self.pos.y / lvl.grid.cell_size as f64).min(lvl.grid.height as f64 - 1.0).max(0.0) as usize;
	262	if lvl.grid.cells[x][y] {
	263	if self.bounces == 0 {
	264	return Dead
	265	}
	266	self.vel *= -0.25;
	267	self.pos += self.vel;
	268	self.bounces -= 1;
	269	use rand::distributions::{Distribution, Normal};
	270	let mut rng = rand::thread_rng();
	271	let a = Radians(self.vel.to_radians().0 + Normal::new(0.0, 0.75).sample(&mut rng));
	272	objects.push(Box::new(Boll {
	273	vel: Point2D::from(a) * Normal::new(1.0, 0.25).sample(&mut rng) * self.vel.length(),
	274	..*self
	275	}));
	276	}
	277
	278	Alive
	279	}
	280
	281	fn render(&self, renderer: &mut Renderer, _sprites: &SpriteManager) {
	282	let block = _sprites.get("block");
	283	let size = 4 + self.bounces * 6;
	284	renderer.blit(block, None, Rect::new(self.pos.x as i32 - size as i32 / 2, self.pos.y as i32 - size as i32 / 2, size as u32, size as u32));
	285	// renderer.canvas().set_draw_color((0, self.bounces * 100, 255));
	286	// renderer.canvas().draw_point((self.pos.x as i32, self.pos.y as i32)).unwrap();
	287	}
	288	}