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

use core::controller::Controller;
use core::object::boll::Boll;
use core::level::{Level, Wall, IntersectResult::Intersection};
use core::object::{Object, Objects, ObjectState};
use core::render::Renderer;
use geometry::Point;
use point;
use sdl2::rect::Rect;
use sprites::SpriteManager;
use std::cell::RefCell;
use std::rc::Rc;
use time::Duration;

////////// TRIGGER /////////////////////////////////////////////////////////////

trait Trigger {
    fn update(&mut self, body: &Body, ctrl: &Controller, dt: Duration) -> Option<Box<dyn State>>;
}

////////// STATE ///////////////////////////////////////////////////////////////

trait State {
    fn enter(&mut self, _body: &mut Body, _ctrl: &Controller, _objects: &mut Objects) {}
    fn exit(&self) {}
    fn update(&mut self, body: &mut Body, ctrl: &Controller, objects: &mut Objects, lvl: &Level, dt: Duration) -> Option<Box<dyn State>>;
}

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

struct Body {
    pos: Point<f64>,
    vel: Point<f64>,
    standing_on: Option<Wall>,
}

pub struct Character {
    ctrl: Rc<RefCell<Controller>>,
    body: Body,
    triggers: Vec<Box<dyn Trigger>>,
    state: Box<dyn State>,
}

impl Character {
    pub fn new(ctrl: Rc<RefCell<Controller>>) -> Self {
	Character {
	    ctrl,
	    body: Body {
		pos: point!(300.0, 300.0),
		vel: point!(0.0, 0.0),
		standing_on: None,
	    },
	    triggers: vec!(Box::new(JumpTrigger)),
	    state: Box::new(FallState),
	}
    }
}

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

	if let Some(state) = self.state.update(&mut self.body, &ctrl, objects, lvl, dt) {
	    self.state.exit();
	    self.state = state;
	    self.state.enter(&mut self.body, &ctrl, objects);
	}

	match &self.body.standing_on {
	    Some(_wall) => {
	    },
	    None => { // in air
		if let Intersection(wall, pos) = lvl.intersect_walls(self.body.pos - self.body.vel, self.body.pos) {
		    self.body.standing_on = Some(wall);
		    self.body.pos = pos;
		    self.body.vel = point!(0.0, 0.0);

		    self.state.exit();
		    self.state = Box::new(StandState);
		    self.state.enter(&mut self.body, &ctrl, objects);
		}
	    }
	}

	for trigger in &mut self.triggers {
	    if let Some(state) = trigger.update(&self.body, &ctrl, dt) {
		self.state.exit();
		self.state = state;
		self.state.enter(&mut self.body, &ctrl, objects);
	    }
	}

	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::new(
		    self.body.pos + point!(0.0, -16.0), // half the height of mario
		    direction * (10.0 + rand::random::<f64>()) + point!(normal.sample(&mut rand::thread_rng()), normal.sample(&mut rand::thread_rng())) + self.body.vel,
		    2,
		)));
	    }
	    ctrl.rumble(1.0, dt);
	    self.body.vel -= direction * 0.1;
	}

	ObjectState::Alive
    }

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

	let ctrl = &self.ctrl.borrow();
	let l = 300.0;
	let pos = (self.body.pos.x as i32, self.body.pos.y as i32);
	// // axis values
	// let p = (self.body.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.body.pos + ctrl.aim.to_point() * l).to_i32().into();
	renderer.draw_line(pos, p, (255, 0, 0));
	draw_cross(renderer, p);
	let p = (self.body.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.body.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();
}

////////// FALLING /////////////////////////////////////////////////////////////

struct FallState;

impl State for FallState {
    fn update(&mut self, body: &mut Body, ctrl: &Controller, _objects: &mut Objects, lvl: &Level, _dt: Duration) -> Option<Box<dyn State>> {
	body.vel += lvl.gravity;
	body.pos += body.vel;

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

	None
    }
}

////////// STANDING ////////////////////////////////////////////////////////////

struct StandState;

impl State for StandState {
    fn update(&mut self, body: &mut Body, _ctrl: &Controller, _objects: &mut Objects, _lvl: &Level, _dt: Duration) -> Option<Box<dyn State>> {
	if let Some(_wall) = &body.standing_on {
	    body.vel *= 0.9;
	}

	None
    }
}

////////// JUMPING /////////////////////////////////////////////////////////////

struct JumpTrigger;

impl Trigger for JumpTrigger {
    fn update(&mut self, body: &Body, ctrl: &Controller, _dt: Duration) -> Option<Box<dyn State>> {
	if body.standing_on.is_some() && ctrl.jump.is_pressed && !ctrl.jump.was_pressed { // this is redundant now because JumpState needs a wall to get starting velocity, but that will probably change
	    Some(Box::new(JumpState))
	} else {
	    None
	}
    }
}

struct JumpState;

impl State for JumpState {
    fn enter(&mut self, body: &mut Body, ctrl: &Controller, _objects: &mut Objects) {
	if let Some(wall) = &body.standing_on {
	    if ctrl.mov.to_point().length() < 0.1 {
		body.vel = wall.normal().into();
	    } else {
		body.vel = ctrl.mov.to_point();
	    }
	    body.vel *= 5.0;
	    body.pos += body.vel * 0.1;
	    body.standing_on = None;
	}
    }

    fn update(&mut self, body: &mut Body, ctrl: &Controller, _objects: &mut Objects, lvl: &Level, _dt: Duration) -> Option<Box<dyn State>> {
	body.vel += lvl.gravity;
	body.pos += body.vel;

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

	None
    }
}
Commit	Line	Data
	1	use core::controller::Controller;
	2	use core::object::boll::Boll;
	3	use core::level::{Level, Wall, IntersectResult::Intersection};
	4	use core::object::{Object, Objects, ObjectState};
	5	use core::render::Renderer;
	6	use geometry::Point;
	7	use point;
	8	use sdl2::rect::Rect;
	9	use sprites::SpriteManager;
	10	use std::cell::RefCell;
	11	use std::rc::Rc;
	12	use time::Duration;
	13
	14	////////// TRIGGER /////////////////////////////////////////////////////////////
	15
	16	trait Trigger {
	17	fn update(&mut self, body: &Body, ctrl: &Controller, dt: Duration) -> Option<Box<dyn State>>;
	18	}
	19
	20	////////// STATE ///////////////////////////////////////////////////////////////
	21
	22	trait State {
	23	fn enter(&mut self, _body: &mut Body, _ctrl: &Controller, _objects: &mut Objects) {}
	24	fn exit(&self) {}
	25	fn update(&mut self, body: &mut Body, ctrl: &Controller, objects: &mut Objects, lvl: &Level, dt: Duration) -> Option<Box<dyn State>>;
	26	}
	27
	28	////////// CHARACTER ///////////////////////////////////////////////////////////
	29
	30	struct Body {
	31	pos: Point<f64>,
	32	vel: Point<f64>,
	33	standing_on: Option<Wall>,
	34	}
	35
	36	pub struct Character {
	37	ctrl: Rc<RefCell<Controller>>,
	38	body: Body,
	39	triggers: Vec<Box<dyn Trigger>>,
	40	state: Box<dyn State>,
	41	}
	42
	43	impl Character {
	44	pub fn new(ctrl: Rc<RefCell<Controller>>) -> Self {
	45	Character {
	46	ctrl,
	47	body: Body {
	48	pos: point!(300.0, 300.0),
	49	vel: point!(0.0, 0.0),
	50	standing_on: None,
	51	},
	52	triggers: vec!(Box::new(JumpTrigger)),
	53	state: Box::new(FallState),
	54	}
	55	}
	56	}
	57
	58	impl Object for Character {
	59	fn update(&mut self, objects: &mut Objects, lvl: &Level, dt: Duration) -> ObjectState {
	60	let ctrl = self.ctrl.borrow();
	61
	62	if let Some(state) = self.state.update(&mut self.body, &ctrl, objects, lvl, dt) {
	63	self.state.exit();
	64	self.state = state;
	65	self.state.enter(&mut self.body, &ctrl, objects);
	66	}
	67
	68	match &self.body.standing_on {
	69	Some(_wall) => {
	70	},
	71	None => { // in air
	72	if let Intersection(wall, pos) = lvl.intersect_walls(self.body.pos - self.body.vel, self.body.pos) {
	73	self.body.standing_on = Some(wall);
	74	self.body.pos = pos;
	75	self.body.vel = point!(0.0, 0.0);
	76
	77	self.state.exit();
	78	self.state = Box::new(StandState);
	79	self.state.enter(&mut self.body, &ctrl, objects);
	80	}
	81	}
	82	}
	83
	84	for trigger in &mut self.triggers {
	85	if let Some(state) = trigger.update(&self.body, &ctrl, dt) {
	86	self.state.exit();
	87	self.state = state;
	88	self.state.enter(&mut self.body, &ctrl, objects);
	89	}
	90	}
	91
	92	if ctrl.shoot.is_pressed {
	93	use rand::distributions::{Distribution, Normal};
	94	let normal = Normal::new(0.0, 0.1);
	95	let direction = if ctrl.aim.to_point().length() > 0.1 { ctrl.aim.to_point() } else { ctrl.mov.to_point() };
	96	for _i in 0..100 {
	97	objects.push(Box::new(Boll::new(
	98	self.body.pos + point!(0.0, -16.0), // half the height of mario
	99	direction * (10.0 + rand::random::<f64>()) + point!(normal.sample(&mut rand::thread_rng()), normal.sample(&mut rand::thread_rng())) + self.body.vel,
	100	2,
	101	)));
	102	}
	103	ctrl.rumble(1.0, dt);
	104	self.body.vel -= direction * 0.1;
	105	}
	106
	107	ObjectState::Alive
	108	}
	109
	110	fn render(&self, renderer: &mut Renderer, sprites: &SpriteManager) {
	111	let block = sprites.get("mario");
	112	let size = 32;
	113	renderer.blit(block, None, Rect::new(self.body.pos.x as i32 - size as i32 / 2, self.body.pos.y as i32 - size as i32, size, size));
	114
	115	let ctrl = &self.ctrl.borrow();
	116	let l = 300.0;
	117	let pos = (self.body.pos.x as i32, self.body.pos.y as i32);
	118	// // axis values
	119	// let p = (self.body.pos + ctrl.aim.to_axis_point() * l).to_i32().into();
	120	// renderer.draw_line(pos, p, (0, 255, 0));
	121	// draw_cross(renderer, p);
	122	// values limited to unit vector
	123	let p = (self.body.pos + ctrl.aim.to_point() * l).to_i32().into();
	124	renderer.draw_line(pos, p, (255, 0, 0));
	125	draw_cross(renderer, p);
	126	let p = (self.body.pos + ctrl.mov.to_point() * l).to_i32().into();
	127	renderer.draw_line(pos, p, (0, 255, 0));
	128	draw_cross(renderer, p);
	129	// // circle values
	130	// let p = (self.body.pos + Point::from(ctrl.aim.a) * l).to_i32().into();
	131	// renderer.draw_line(pos, p, (0, 0, 255));
	132	// draw_cross(renderer, p);
	133	}
	134	}
	135
	136	fn draw_cross(renderer: &mut Renderer, p: (i32, i32)) {
	137	renderer.canvas().draw_line((p.0 - 5, p.1), (p.0 + 5, p.1)).unwrap();
	138	renderer.canvas().draw_line((p.0, p.1 - 5), (p.0, p.1 + 5)).unwrap();
	139	}
	140
	141	////////// FALLING /////////////////////////////////////////////////////////////
	142
	143	struct FallState;
	144
	145	impl State for FallState {
	146	fn update(&mut self, body: &mut Body, ctrl: &Controller, _objects: &mut Objects, lvl: &Level, _dt: Duration) -> Option<Box<dyn State>> {
	147	body.vel += lvl.gravity;
	148	body.pos += body.vel;
	149
	150	match ctrl.mov.x {
	151	v if v < -0.9 && body.vel.x > -5.0 => { body.vel.x -= 0.5 }
	152	v if v > 0.9 && body.vel.x < 5.0 => { body.vel.x += 0.5 }
	153	_ => {}
	154	}
	155
	156	None
	157	}
	158	}
	159
	160	////////// STANDING ////////////////////////////////////////////////////////////
	161
	162	struct StandState;
	163
	164	impl State for StandState {
	165	fn update(&mut self, body: &mut Body, _ctrl: &Controller, _objects: &mut Objects, _lvl: &Level, _dt: Duration) -> Option<Box<dyn State>> {
	166	if let Some(_wall) = &body.standing_on {
	167	body.vel *= 0.9;
	168	}
	169
	170	None
	171	}
	172	}
	173
	174	////////// JUMPING /////////////////////////////////////////////////////////////
	175
	176	struct JumpTrigger;
	177
	178	impl Trigger for JumpTrigger {
	179	fn update(&mut self, body: &Body, ctrl: &Controller, _dt: Duration) -> Option<Box<dyn State>> {
	180	if body.standing_on.is_some() && ctrl.jump.is_pressed && !ctrl.jump.was_pressed { // this is redundant now because JumpState needs a wall to get starting velocity, but that will probably change
	181	Some(Box::new(JumpState))
	182	} else {
	183	None
	184	}
	185	}
	186	}
	187
	188	struct JumpState;
	189
	190	impl State for JumpState {
	191	fn enter(&mut self, body: &mut Body, ctrl: &Controller, _objects: &mut Objects) {
	192	if let Some(wall) = &body.standing_on {
	193	if ctrl.mov.to_point().length() < 0.1 {
	194	body.vel = wall.normal().into();
	195	} else {
	196	body.vel = ctrl.mov.to_point();
	197	}
	198	body.vel *= 5.0;
	199	body.pos += body.vel * 0.1;
	200	body.standing_on = None;
	201	}
	202	}
	203
	204	fn update(&mut self, body: &mut Body, ctrl: &Controller, _objects: &mut Objects, lvl: &Level, _dt: Duration) -> Option<Box<dyn State>> {
	205	body.vel += lvl.gravity;
	206	body.pos += body.vel;
	207
	208	match ctrl.mov.x {
	209	v if v < -0.9 && body.vel.x > -5.0 => { body.vel.x -= 0.5 }
	210	v if v > 0.9 && body.vel.x < 5.0 => { body.vel.x += 0.5 }
	211	_ => {}
	212	}
	213
	214	None
	215	}
	216	}