Commit | Line | Data |
---|---|---|
6566d7e5 | 1 | use core::render::Renderer; |
296187ca | 2 | use sdl2::rect::Rect; |
296187ca | 3 | |
e570927a | 4 | use common::Point; |
6c5dd5cf | 5 | use sdl2::gfx::primitives::DrawRenderer; |
6ba7aef1 | 6 | use {SCREEN_HEIGHT, SCREEN_WIDTH}; |
296187ca | 7 | |
c315bb31 TW |
8 | pub trait Boll { |
9 | fn update(&mut self); | |
6566d7e5 | 10 | fn draw(&self, renderer: &mut Renderer, size: u32); |
c315bb31 TW |
11 | } |
12 | ||
13 | pub struct SquareBoll { | |
e570927a TW |
14 | pub pos: Point<f64>, |
15 | pub vel: Point<f64>, | |
296187ca TW |
16 | } |
17 | ||
c315bb31 TW |
18 | impl Boll for SquareBoll { |
19 | fn update(&mut self) { | |
296187ca TW |
20 | self.vel.y += 0.1; |
21 | self.pos += self.vel; | |
22 | ||
23 | if self.pos.x < 0.0 { | |
24 | self.pos.x = -self.pos.x; | |
25 | self.vel.x = -self.vel.x; | |
26 | } | |
27 | if self.pos.x > SCREEN_WIDTH as f64 { | |
28 | self.pos.x = SCREEN_WIDTH as f64 - (self.pos.x - SCREEN_WIDTH as f64); | |
29 | self.vel.x = -self.vel.x; | |
30 | } | |
31 | if self.pos.y < 0.0 { | |
32 | self.pos.y = -self.pos.y; | |
33 | self.vel.y = -self.vel.y; | |
34 | } | |
35 | if self.pos.y > SCREEN_HEIGHT as f64 { | |
36 | self.pos.y = SCREEN_HEIGHT as f64 - (self.pos.y - SCREEN_HEIGHT as f64); | |
37 | self.vel.y = -self.vel.y; | |
38 | } | |
39 | } | |
40 | ||
6566d7e5 TW |
41 | fn draw(&self, renderer: &mut Renderer, size: u32) { |
42 | renderer.canvas().set_draw_color(( | |
296187ca TW |
43 | 255 - std::cmp::min(255, (self.vel.length() * 25.0) as u8), |
44 | (255.0 * (self.pos.x / SCREEN_WIDTH as f64)) as u8, | |
6ba7aef1 TW |
45 | (255.0 * (self.pos.y / SCREEN_HEIGHT as f64)) as u8, |
46 | 128, | |
296187ca TW |
47 | )); |
48 | let mut r = Rect::new(0, 0, size, size); | |
6566d7e5 TW |
49 | r.center_on((self.pos.x as i32, self.pos.y as i32)); |
50 | renderer.canvas().fill_rect(r).unwrap(); | |
296187ca TW |
51 | } |
52 | } | |
6c5dd5cf | 53 | |
6c5dd5cf TW |
54 | pub struct CircleBoll { |
55 | pub boll: SquareBoll, | |
56 | } | |
57 | ||
58 | impl CircleBoll { | |
e570927a | 59 | pub fn new(pos: Point<f64>, vel: Point<f64>) -> CircleBoll { |
6c5dd5cf | 60 | CircleBoll { |
6ba7aef1 | 61 | boll: SquareBoll { pos, vel }, |
6c5dd5cf TW |
62 | } |
63 | } | |
64 | } | |
65 | ||
66 | impl Boll for CircleBoll { | |
67 | fn update(&mut self) { | |
68 | self.boll.update(); | |
69 | } | |
70 | ||
6566d7e5 | 71 | fn draw(&self, renderer: &mut Renderer, size: u32) { |
6c5dd5cf | 72 | let val = 255 - std::cmp::min(255, (self.boll.vel.length() * 20.0) as u8); |
6566d7e5 TW |
73 | renderer |
74 | .canvas() | |
6ba7aef1 TW |
75 | .filled_circle( |
76 | self.boll.pos.x as i16, | |
77 | self.boll.pos.y as i16, | |
78 | size as i16, | |
6566d7e5 | 79 | (val, val, val, 128), |
6ba7aef1 TW |
80 | ) |
81 | .unwrap(); | |
6c5dd5cf TW |
82 | } |
83 | } |