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

use AppState;
use core::app::StateChange;
use core::controller::Controller;
use core::controller::ControllerManager;
use core::level::{Level, LevelGenerator, Wall, IntersectResult::Intersection};
use core::render::Renderer;
use geometry::{Point, ToAngle};
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 teststate::TestState;
use time::Duration;

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

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

impl GameState {
    pub fn new() -> Self {
	let lvlgen = LevelGenerator::new(0);
	GameState {
	    world: World::new(lvlgen.generate()),
	    lvlgen,
	    ..Default::default()
	}
    }
}

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, self.debug_mode);
    }

    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(TestState::new())))
            }
	    Event::KeyDown { keycode: Some(Keycode::KpEnter), .. } => {
		self.debug_mode = !self.debug_mode;
	    }
	    Event::KeyDown { keycode: Some(Keycode::Space), .. } => {
		self.lvlgen.seed = std::time::UNIX_EPOCH.elapsed().unwrap().as_secs() as u32;
		self.world.level = self.lvlgen.generate();
	    }
	    Event::KeyDown { keycode: Some(Keycode::KpPlus), .. } => {
		self.lvlgen.iterations += 1;
		self.world.level = self.lvlgen.generate();
	    }
	    Event::KeyDown { keycode: Some(Keycode::KpMinus), .. } => {
		if self.lvlgen.iterations > 0 {
		    self.lvlgen.iterations -= 1;
		    self.world.level = self.lvlgen.generate();
		}
	    }
	    Event::KeyDown { keycode: Some(Keycode::KpMultiply), .. } => {
		self.lvlgen.wall_smooth_radius += 1;
		self.world.level = self.lvlgen.generate();
	    }
	    Event::KeyDown { keycode: Some(Keycode::KpDivide), .. } => {
		if self.lvlgen.wall_smooth_radius > 0 {
		    self.lvlgen.wall_smooth_radius -= 1;
		    self.world.level = self.lvlgen.generate();
		}
	    }
	    _ => {}
	}
	None
    }
}

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

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

impl World {
    pub fn new(level: Level) -> Self {
	World {
	    level,
	    ..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, debug_mode: bool) {
	self.level.render(renderer, sprites, debug_mode);
	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: Point<f64>,
    vel: Point<f64>,
    standing_on: Option<Wall>,
}

impl Character {
    pub fn new(ctrl: Rc<RefCell<Controller>>) -> Self {
	Character {
	    ctrl,
	    pos: point!(300.0, 300.0),
	    vel: point!(0.0, 0.0),
	    standing_on: None,
	}
    }
}

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

	match &self.standing_on {
	    Some(wall) => {
		if ctrl.jump.is_pressed && !ctrl.jump.was_pressed {
		    if ctrl.mov.to_point().length() < 0.1 {
			self.vel = wall.normal().into();
		    } else {
			self.vel = ctrl.mov.to_point();
		    }
		    self.vel *= 5.0;
		    self.pos += self.vel * 0.1;
		    self.standing_on = None;
		} else {
		    self.vel *= 0.9;
		}
	    },
	    None => {
		self.vel += lvl.gravity;
		self.pos += self.vel;

		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 }
		    _ => {}
		}

		if let Intersection(wall, pos) = lvl.intersect_walls(self.pos - self.vel, self.pos) {
		    self.standing_on = Some(wall);
		    self.pos = pos;
		    self.vel = point!(0.0, 0.0);
		}
	    }
	}

	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 + point!(0.0, -16.0), // half the height of mario
		    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(_) => {}
	    };
	}

	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 + Point::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: Point<f64>,
    vel: Point<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;

	if let Intersection(wall, pos) = lvl.intersect_walls(self.pos - self.vel, self.pos) {
	    if self.bounces == 0 {
		return Dead
	    }
	    self.bounces -= 1;
	    let mut a = wall.normal().mirror(self.vel.to_angle()); // TODO interpolera normalen mellan närliggande väggdelar? bollarna studsar väldigt "kantigt" nu
	    self.pos = pos + Point::from(wall.normal()) * 0.1; // får bollen att inte åka igenom väggen av misstag p.g.a nedan slumpvinkel
	    self.vel = Point::from(a) * self.vel.length() * 0.35;

	    // create another boll
	    use rand::distributions::{Distribution, Normal};
	    let mut rng = rand::thread_rng();
	    a += Normal::new(0.0, 0.1).sample(&mut rng).radians(); // TODO slumpen kan ge en vinkel som är under tangenten. vinkel-metoder på väggen istället kanske?
	    use rand::Rng;
	    objects.push(Box::new(Boll {
	    	vel: Point::from(a) * Normal::new(1.0, 0.25).sample(&mut rng) * self.vel.length() * rng.gen_range(0.25, 1.0),
	    	..*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 core::app::StateChange;
	3	use core::controller::Controller;
	4	use core::controller::ControllerManager;
	5	use core::level::{Level, LevelGenerator, Wall, IntersectResult::Intersection};
	6	use core::render::Renderer;
	7	use geometry::{Point, ToAngle};
	8	use point;
	9	use sdl2::event::Event;
	10	use sdl2::joystick::PowerLevel;
	11	use sdl2::keyboard::Keycode;
	12	use sdl2::rect::Rect;
	13	use sprites::SpriteManager;
	14	use std::cell::RefCell;
	15	use std::rc::Rc;
	16	use teststate::TestState;
	17	use time::Duration;
	18
	19	////////// GAMESTATE ///////////////////////////////////////////////////////////
	20
	21	#[derive(Default)]
	22	pub struct GameState {
	23	world: World,
	24	lvlgen: LevelGenerator,
	25	debug_mode: bool,
	26	}
	27
	28	impl GameState {
	29	pub fn new() -> Self {
	30	let lvlgen = LevelGenerator::new(0);
	31	GameState {
	32	world: World::new(lvlgen.generate()),
	33	lvlgen,
	34	..Default::default()
	35	}
	36	}
	37	}
	38
	39	impl AppState for GameState {
	40	fn enter(&mut self, ctrl_man: &ControllerManager) {
	41	for (_k, v) in ctrl_man.controllers.iter() {
	42	self.world.add(Box::new(Character::new(v.clone())));
	43	}
	44	}
	45
	46	fn leave(&mut self) {}
	47
	48	fn update(&mut self, dt: Duration) -> Option<StateChange> {
	49	self.world.update(dt);
	50	None
	51	}
	52
	53	fn render(&mut self, renderer: &mut Renderer, sprites: &SpriteManager) {
	54	self.world.render(renderer, sprites, self.debug_mode);
	55	}
	56
	57	fn handle_event(&mut self, event: Event) -> Option<StateChange> {
	58	match event {
	59	Event::KeyDown { keycode: Some(Keycode::Escape), .. } => {
	60	return Some(StateChange::Pop)
	61	}
	62	Event::KeyDown { keycode: Some(Keycode::Return), .. } => {
	63	return Some(StateChange::Push(Box::new(TestState::new())))
	64	}
	65	Event::KeyDown { keycode: Some(Keycode::KpEnter), .. } => {
	66	self.debug_mode = !self.debug_mode;
	67	}
	68	Event::KeyDown { keycode: Some(Keycode::Space), .. } => {
	69	self.lvlgen.seed = std::time::UNIX_EPOCH.elapsed().unwrap().as_secs() as u32;
	70	self.world.level = self.lvlgen.generate();
	71	}
	72	Event::KeyDown { keycode: Some(Keycode::KpPlus), .. } => {
	73	self.lvlgen.iterations += 1;
	74	self.world.level = self.lvlgen.generate();
	75	}
	76	Event::KeyDown { keycode: Some(Keycode::KpMinus), .. } => {
	77	if self.lvlgen.iterations > 0 {
	78	self.lvlgen.iterations -= 1;
	79	self.world.level = self.lvlgen.generate();
	80	}
	81	}
	82	Event::KeyDown { keycode: Some(Keycode::KpMultiply), .. } => {
	83	self.lvlgen.wall_smooth_radius += 1;
	84	self.world.level = self.lvlgen.generate();
	85	}
	86	Event::KeyDown { keycode: Some(Keycode::KpDivide), .. } => {
	87	if self.lvlgen.wall_smooth_radius > 0 {
	88	self.lvlgen.wall_smooth_radius -= 1;
	89	self.world.level = self.lvlgen.generate();
	90	}
	91	}
	92	_ => {}
	93	}
	94	None
	95	}
	96	}
	97
	98	////////// WORLD ///////////////////////////////////////////////////////////////
	99
	100	#[derive(Default)]
	101	pub struct World {
	102	level: Level,
	103	objects: Objects,
	104	}
	105
	106	impl World {
	107	pub fn new(level: Level) -> Self {
	108	World {
	109	level,
	110	..Default::default()
	111	}
	112	}
	113
	114	pub fn update(&mut self, dt: Duration) {
	115	let mut breeding_ground = vec!();
	116
	117	for i in (0..self.objects.len()).rev() {
	118	if self.objects[i].update(&mut breeding_ground, &self.level, dt) == Dead {
	119	self.objects.remove(i); // swap_remove is more efficient, but changes the order of the array
	120	}
	121	}
	122
	123	for o in breeding_ground {
	124	self.add(o);
	125	}
	126
	127	println!("\x1b[Kobject count: {}\x1b[1A", self.objects.len()); // clear line, print, move cursor up
	128	}
	129
	130	pub fn render(&mut self, renderer: &mut Renderer, sprites: &SpriteManager, debug_mode: bool) {
	131	self.level.render(renderer, sprites, debug_mode);
	132	for o in &mut self.objects {
	133	o.render(renderer, sprites);
	134	}
	135	}
	136
	137	pub fn add(&mut self, object: Box<dyn Object>) {
	138	self.objects.push(object);
	139	}
	140	}
	141
	142	////////// OBJECT //////////////////////////////////////////////////////////////
	143
	144	type Objects = Vec<Box<dyn Object>>;
	145
	146	pub trait Object {
	147	fn update(&mut self, objects: &mut Objects, lvl: &Level, dt: Duration) -> ObjectState;
	148	fn render(&self, _renderer: &mut Renderer, _sprites: &SpriteManager) {}
	149	}
	150
	151	#[derive(PartialEq)]
	152	pub enum ObjectState { Alive, Dead }
	153	use self::ObjectState::*;
	154
	155
	156	pub trait Physical {}
	157	pub trait Drawable {}
	158
	159	////////// CHARACTER ///////////////////////////////////////////////////////////
	160
	161	pub struct Character {
	162	ctrl: Rc<RefCell<Controller>>,
	163	pos: Point<f64>,
	164	vel: Point<f64>,
	165	standing_on: Option<Wall>,
	166	}
	167
	168	impl Character {
	169	pub fn new(ctrl: Rc<RefCell<Controller>>) -> Self {
	170	Character {
	171	ctrl,
	172	pos: point!(300.0, 300.0),
	173	vel: point!(0.0, 0.0),
	174	standing_on: None,
	175	}
	176	}
	177	}
	178
	179	impl Object for Character {
	180	fn update(&mut self, objects: &mut Objects, lvl: &Level, dt: Duration) -> ObjectState {
	181	let ctrl = self.ctrl.borrow();
	182
	183	match &self.standing_on {
	184	Some(wall) => {
	185	if ctrl.jump.is_pressed && !ctrl.jump.was_pressed {
	186	if ctrl.mov.to_point().length() < 0.1 {
	187	self.vel = wall.normal().into();
	188	} else {
	189	self.vel = ctrl.mov.to_point();
	190	}
	191	self.vel *= 5.0;
	192	self.pos += self.vel * 0.1;
	193	self.standing_on = None;
	194	} else {
	195	self.vel *= 0.9;
	196	}
	197	},
	198	None => {
	199	self.vel += lvl.gravity;
	200	self.pos += self.vel;
	201
	202	match ctrl.mov.x {
	203	v if v < -0.9 && self.vel.x > -5.0 => { self.vel.x -= 0.5 }
	204	v if v > 0.9 && self.vel.x < 5.0 => { self.vel.x += 0.5 }
	205	_ => {}
	206	}
	207
	208	if let Intersection(wall, pos) = lvl.intersect_walls(self.pos - self.vel, self.pos) {
	209	self.standing_on = Some(wall);
	210	self.pos = pos;
	211	self.vel = point!(0.0, 0.0);
	212	}
	213	}
	214	}
	215
	216	if ctrl.shoot.is_pressed {
	217	use rand::distributions::{Distribution, Normal};
	218	let normal = Normal::new(0.0, 0.1);
	219	let direction = if ctrl.aim.to_point().length() > 0.1 { ctrl.aim.to_point() } else { ctrl.mov.to_point() };
	220	for _i in 0..100 {
	221	objects.push(Box::new(Boll {
	222	pos: self.pos + point!(0.0, -16.0), // half the height of mario
	223	vel: direction * (10.0 + rand::random::<f64>()) + point!(normal.sample(&mut rand::thread_rng()), normal.sample(&mut rand::thread_rng())) + self.vel,
	224	bounces: 2,
	225	}));
	226	}
	227	ctrl.rumble(1.0, dt);
	228	self.vel -= direction * 0.1;
	229	}
	230
	231	if ctrl.start.is_pressed && !ctrl.start.was_pressed {
	232	match ctrl.device.power_level() {
	233	Ok(PowerLevel::Unknown) => { println!("power level unknown"); }
	234	Ok(PowerLevel::Empty) => { println!("power level empty"); }
	235	Ok(PowerLevel::Low) => { println!("power level low"); }
	236	Ok(PowerLevel::Medium) => { println!("power level medium"); }
	237	Ok(PowerLevel::Full) => { println!("power level full"); }
	238	Ok(PowerLevel::Wired) => { println!("power level wired"); }
	239	Err(_) => {}
	240	};
	241	}
	242
	243	Alive
	244	}
	245
	246	fn render(&self, renderer: &mut Renderer, sprites: &SpriteManager) {
	247	let block = sprites.get("mario");
	248	let size = 32;
	249	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));
	250
	251	let ctrl = &self.ctrl.borrow();
	252	let l = 300.0;
	253	let pos = (self.pos.x as i32, self.pos.y as i32);
	254	// // axis values
	255	// let p = (self.pos + ctrl.aim.to_axis_point() * l).to_i32().into();
	256	// renderer.draw_line(pos, p, (0, 255, 0));
	257	// draw_cross(renderer, p);
	258	// values limited to unit vector
	259	let p = (self.pos + ctrl.aim.to_point() * l).to_i32().into();
	260	renderer.draw_line(pos, p, (255, 0, 0));
	261	draw_cross(renderer, p);
	262	let p = (self.pos + ctrl.mov.to_point() * l).to_i32().into();
	263	renderer.draw_line(pos, p, (0, 255, 0));
	264	draw_cross(renderer, p);
	265	// // circle values
	266	// let p = (self.pos + Point::from(ctrl.aim.a) * l).to_i32().into();
	267	// renderer.draw_line(pos, p, (0, 0, 255));
	268	// draw_cross(renderer, p);
	269	}
	270	}
	271
	272	fn draw_cross(renderer: &mut Renderer, p: (i32, i32)) {
	273	renderer.canvas().draw_line((p.0 - 5, p.1), (p.0 + 5, p.1)).unwrap();
	274	renderer.canvas().draw_line((p.0, p.1 - 5), (p.0, p.1 + 5)).unwrap();
	275	}
	276
	277	////////// BOLL ////////////////////////////////////////////////////////////////
	278
	279	pub struct Boll {
	280	pos: Point<f64>,
	281	vel: Point<f64>,
	282	bounces: u8,
	283	}
	284
	285	impl Object for Boll {
	286	fn update(&mut self, objects: &mut Objects, lvl: &Level, _dt: Duration) -> ObjectState {
	287	self.vel += lvl.gravity;
	288	self.pos += self.vel;
	289
	290	if let Intersection(wall, pos) = lvl.intersect_walls(self.pos - self.vel, self.pos) {
	291	if self.bounces == 0 {
	292	return Dead
	293	}
	294	self.bounces -= 1;
	295	let mut a = wall.normal().mirror(self.vel.to_angle()); // TODO interpolera normalen mellan närliggande väggdelar? bollarna studsar väldigt "kantigt" nu
	296	self.pos = pos + Point::from(wall.normal()) * 0.1; // får bollen att inte åka igenom väggen av misstag p.g.a nedan slumpvinkel
	297	self.vel = Point::from(a) * self.vel.length() * 0.35;
	298
	299	// create another boll
	300	use rand::distributions::{Distribution, Normal};
	301	let mut rng = rand::thread_rng();
	302	a += Normal::new(0.0, 0.1).sample(&mut rng).radians(); // TODO slumpen kan ge en vinkel som är under tangenten. vinkel-metoder på väggen istället kanske?
	303	use rand::Rng;
	304	objects.push(Box::new(Boll {
	305	vel: Point::from(a) * Normal::new(1.0, 0.25).sample(&mut rng) * self.vel.length() * rng.gen_range(0.25, 1.0),
	306	..*self
	307	}));
	308	}
	309
	310	Alive
	311	}
	312
	313	fn render(&self, renderer: &mut Renderer, _sprites: &SpriteManager) {
	314	let block = _sprites.get("block");
	315	let size = 4 + self.bounces * 6;
	316	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));
	317	// renderer.canvas().set_draw_color((0, self.bounces * 100, 255));
	318	// renderer.canvas().draw_point((self.pos.x as i32, self.pos.y as i32)).unwrap();
	319	}
	320	}