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

use AppState;
use common::{Point2D, Radians};
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) {
	self.world.update(dt);
    }

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

    fn handle_event(&mut self, event: Event) {
	match event {
	    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();
	    }
	    _ => {}
	}
    }
}

////////// 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 common::{Point2D, Radians};
	3	use core::controller::Controller;
	4	use core::controller::ControllerManager;
	5	use core::level::Level;
	6	use core::render::Renderer;
	7	use point;
	8	use sdl2::event::Event;
	9	use sdl2::joystick::PowerLevel;
	10	use sdl2::keyboard::Keycode;
	11	use sdl2::rect::Rect;
	12	use sprites::SpriteManager;
	13	use std::cell::RefCell;
	14	use std::rc::Rc;
	15	use time::Duration;
	16
	17	////////// GAMESTATE ///////////////////////////////////////////////////////////
	18
	19	#[derive(Default)]
	20	pub struct GameState {
	21	world: World,
	22	}
	23
	24	impl GameState {
	25	pub fn new() -> Self {
	26	GameState {
	27	world: World::new(),
	28	}
	29	}
	30	}
	31
	32	impl AppState for GameState {
	33	fn enter(&mut self, ctrl_man: &ControllerManager) {
	34	for (_k, v) in ctrl_man.controllers.iter() {
	35	self.world.add(Box::new(Character::new(v.clone())));
	36	}
	37	}
	38
	39	fn leave(&mut self) {}
	40
	41	fn update(&mut self, dt: Duration) {
	42	self.world.update(dt);
	43	}
	44
	45	fn render(&mut self, renderer: &mut Renderer, sprites: &SpriteManager) {
	46	self.world.render(renderer, sprites);
	47	}
	48
	49	fn handle_event(&mut self, event: Event) {
	50	match event {
	51	Event::KeyDown { keycode: Some(Keycode::Space), .. } => {
	52	self.world.level.regenerate();
	53	}
	54	Event::KeyDown { keycode: Some(Keycode::KpPlus), .. } => {
	55	self.world.level.increase_iteration();
	56	}
	57	Event::KeyDown { keycode: Some(Keycode::KpMinus), .. } => {
	58	self.world.level.decrease_iteration();
	59	}
	60	Event::KeyDown { keycode: Some(Keycode::KpEnter), .. } => {
	61	self.world.level.filter_regions();
	62	}
	63	_ => {}
	64	}
	65	}
	66	}
	67
	68	////////// WORLD ///////////////////////////////////////////////////////////////
	69
	70	#[derive(Default)]
	71	pub struct World {
	72	level: Level,
	73	objects: Objects,
	74	}
	75
	76	impl World {
	77	pub fn new() -> Self {
	78	World {
	79	level: Level::new(point!(0.0, 0.1)),
	80	..Default::default()
	81	}
	82	}
	83
	84	pub fn update(&mut self, dt: Duration) {
	85	let mut breeding_ground = vec!();
	86
	87	for i in (0..self.objects.len()).rev() {
	88	if self.objects[i].update(&mut breeding_ground, &self.level, dt) == Dead {
	89	self.objects.remove(i); // swap_remove is more efficient, but changes the order of the array
	90	}
	91	}
	92
	93	for o in breeding_ground {
	94	self.add(o);
	95	}
	96
	97	println!("\x1b[Kobject count: {}\x1b[1A", self.objects.len()); // clear line, print, move cursor up
	98	}
	99
	100	pub fn render(&mut self, renderer: &mut Renderer, sprites: &SpriteManager) {
	101	self.level.render(renderer, sprites);
	102	for o in &mut self.objects {
	103	o.render(renderer, sprites);
	104	}
	105	}
	106
	107	pub fn add(&mut self, object: Box<dyn Object>) {
	108	self.objects.push(object);
	109	}
	110	}
	111
	112	////////// OBJECT //////////////////////////////////////////////////////////////
	113
	114	type Objects = Vec<Box<dyn Object>>;
	115
	116	pub trait Object {
	117	fn update(&mut self, objects: &mut Objects, lvl: &Level, dt: Duration) -> ObjectState;
	118	fn render(&self, _renderer: &mut Renderer, _sprites: &SpriteManager) {}
	119	}
	120
	121	#[derive(PartialEq)]
	122	pub enum ObjectState { Alive, Dead }
	123	use self::ObjectState::*;
	124
	125
	126	pub trait Physical {}
	127	pub trait Drawable {}
	128
	129	////////// CHARACTER ///////////////////////////////////////////////////////////
	130
	131	pub struct Character {
	132	ctrl: Rc<RefCell<Controller>>,
	133	pos: Point2D<f64>,
	134	vel: Point2D<f64>,
	135	}
	136
	137	impl Character {
	138	pub fn new(ctrl: Rc<RefCell<Controller>>) -> Self {
	139	Character {
	140	ctrl,
	141	pos: point!(300.0, 300.0),
	142	vel: point!(0.0, 0.0),
	143	}
	144	}
	145	}
	146
	147	impl Object for Character {
	148	fn update(&mut self, objects: &mut Objects, lvl: &Level, dt: Duration) -> ObjectState {
	149	let ctrl = self.ctrl.borrow();
	150
	151	let x = (self.pos.x / lvl.grid.cell_size as f64).min(lvl.grid.width as f64 - 1.0).max(0.0) as usize;
	152	let y = (self.pos.y / lvl.grid.cell_size as f64).min(lvl.grid.height as f64 - 1.0).max(0.0) as usize;
	153	if lvl.grid.cells[x][y] {
	154	self.vel += lvl.gravity;
	155	if self.vel.y > 0.0 && !(ctrl.mov.down() && ctrl.jump.is_pressed) {
	156	self.vel.y = 0.0;
	157	self.vel.x *= 0.9;
	158	}
	159
	160	if !ctrl.mov.down() {
	161	if ctrl.jump.is_pressed && !ctrl.jump.was_pressed {
	162	self.vel.y = -5.0;
	163	}
	164	}
	165	} else {
	166	self.vel += lvl.gravity;
	167	}
	168	self.pos += self.vel;
	169
	170	if ctrl.shoot.is_pressed {
	171	use rand::distributions::{Distribution, Normal};
	172	let normal = Normal::new(0.0, 0.1);
	173	let direction = if ctrl.aim.to_point().length() > 0.1 { ctrl.aim.to_point() } else { ctrl.mov.to_point() };
	174	for _i in 0..100 {
	175	objects.push(Box::new(Boll {
	176	pos: self.pos,
	177	vel: direction * (10.0 + rand::random::<f64>()) + point!(normal.sample(&mut rand::thread_rng()), normal.sample(&mut rand::thread_rng())) + self.vel,
	178	bounces: 2,
	179	}));
	180	}
	181	ctrl.rumble(1.0, dt);
	182	self.vel -= direction * 0.1;
	183	}
	184
	185	if ctrl.start.is_pressed && !ctrl.start.was_pressed {
	186	match ctrl.device.power_level() {
	187	Ok(PowerLevel::Unknown) => { println!("power level unknown"); }
	188	Ok(PowerLevel::Empty) => { println!("power level empty"); }
	189	Ok(PowerLevel::Low) => { println!("power level low"); }
	190	Ok(PowerLevel::Medium) => { println!("power level medium"); }
	191	Ok(PowerLevel::Full) => { println!("power level full"); }
	192	Ok(PowerLevel::Wired) => { println!("power level wired"); }
	193	Err(_) => {}
	194	};
	195	}
	196
	197	match ctrl.mov.x {
	198	v if v < -0.9 && self.vel.x > -5.0 => { self.vel.x -= 0.5 }
	199	v if v > 0.9 && self.vel.x < 5.0 => { self.vel.x += 0.5 }
	200	_ => {}
	201	}
	202
	203	Alive
	204	}
	205
	206	fn render(&self, renderer: &mut Renderer, sprites: &SpriteManager) {
	207	let block = sprites.get("mario");
	208	let size = 32;
	209	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));
	210
	211	let ctrl = &self.ctrl.borrow();
	212	let l = 300.0;
	213	let pos = (self.pos.x as i32, self.pos.y as i32);
	214	// // axis values
	215	// let p = (self.pos + ctrl.aim.to_axis_point() * l).to_i32().into();
	216	// renderer.draw_line(pos, p, (0, 255, 0));
	217	// draw_cross(renderer, p);
	218	// values limited to unit vector
	219	let p = (self.pos + ctrl.aim.to_point() * l).to_i32().into();
	220	renderer.draw_line(pos, p, (255, 0, 0));
	221	draw_cross(renderer, p);
	222	let p = (self.pos + ctrl.mov.to_point() * l).to_i32().into();
	223	renderer.draw_line(pos, p, (0, 255, 0));
	224	draw_cross(renderer, p);
	225	// // circle values
	226	// let p = (self.pos + Point2D::from(ctrl.aim.a) * l).to_i32().into();
	227	// renderer.draw_line(pos, p, (0, 0, 255));
	228	// draw_cross(renderer, p);
	229	}
	230	}
	231
	232	fn draw_cross(renderer: &mut Renderer, p: (i32, i32)) {
	233	renderer.canvas().draw_line((p.0 - 5, p.1), (p.0 + 5, p.1)).unwrap();
	234	renderer.canvas().draw_line((p.0, p.1 - 5), (p.0, p.1 + 5)).unwrap();
	235	}
	236
	237	////////// BOLL ////////////////////////////////////////////////////////////////
	238
	239	pub struct Boll {
	240	pos: Point2D<f64>,
	241	vel: Point2D<f64>,
	242	bounces: u8,
	243	}
	244
	245	impl Object for Boll {
	246	fn update(&mut self, objects: &mut Objects, lvl: &Level, _dt: Duration) -> ObjectState {
	247	self.vel += lvl.gravity;
	248	self.pos += self.vel;
	249
	250	let x = (self.pos.x / lvl.grid.cell_size as f64).min(lvl.grid.width as f64 - 1.0).max(0.0) as usize;
	251	let y = (self.pos.y / lvl.grid.cell_size as f64).min(lvl.grid.height as f64 - 1.0).max(0.0) as usize;
	252	if lvl.grid.cells[x][y] {
	253	if self.bounces == 0 {
	254	return Dead
	255	}
	256	self.vel *= -0.25;
	257	self.pos += self.vel;
	258	self.bounces -= 1;
	259	use rand::distributions::{Distribution, Normal};
	260	let mut rng = rand::thread_rng();
	261	let a = Radians(self.vel.to_radians().0 + Normal::new(0.0, 0.75).sample(&mut rng));
	262	objects.push(Box::new(Boll {
	263	vel: Point2D::from(a) * Normal::new(1.0, 0.25).sample(&mut rng) * self.vel.length(),
	264	..*self
	265	}));
	266	}
	267
	268	Alive
	269	}
	270
	271	fn render(&self, renderer: &mut Renderer, _sprites: &SpriteManager) {
	272	let block = _sprites.get("block");
	273	let size = 4 + self.bounces * 6;
	274	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));
	275	// renderer.canvas().set_draw_color((0, self.bounces * 100, 255));
	276	// renderer.canvas().draw_point((self.pos.x as i32, self.pos.y as i32)).unwrap();
	277	}
	278	}