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rust-pilot
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Misc cleanup

master
Levi Pearson 2016-07-30 19:55:30 -06:00
parent 2120fc51ed
commit eb1a4830ca
3 changed files with 21 additions and 25 deletions
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6
src/game/map.rs
View File

@ -18,6 +18,12 @@ impl Map {
[self.width / 2.0, self.height / 2.0]
}
pub fn clamp(&self, other: Vec2d) -> Vec2d {
let x = other[0].max(0.0).min(self.width);
let y = other[1].max(0.0).min(self.height);
[x, y]
}
pub fn draw_grid<G>(&self,
cam_pos: Vec2d,
cam_size: Vec2d,

7
src/game/mod.rs
View File

@ -67,16 +67,17 @@ impl Game {
let ds = context.draw_state.blend(Blend::Alpha);
/* Make the camera coordinate origin the center of the window */
let ct = context.transform.trans((args.width / 2) as Scalar,
(args.height / 2) as Scalar);
let cam_pos = self.camera.position;
let cam_width = self.camera.width;
let cam_height = self.camera.height;
let cam_size= [self.camera.width, self.camera.height];
/* Transform world coordinates to camera-relative coordinates */
let cam_trans = ct.append_transform(translate(mul_scalar(cam_pos, -1.0)));
self.map.draw_grid(cam_pos, [cam_width, cam_height], &ds, cam_trans, gl);
self.map.draw_grid(cam_pos, cam_size, &ds, cam_trans, gl);
for bullet in self.bullets.iter() {
draw_bullet(&bullet, &ds, cam_trans, gl);

33
src/game/ship.rs
View File

@ -29,31 +29,20 @@ impl Ship {
}
}
pub fn update(&mut self, thr: Scalar, rot: Scalar, dt: Scalar, map: &Map) {
let thrust = thr * THRUST_RATE * dt;
let dv = [self.rotation.cos() * thrust, self.rotation.sin() * thrust];
let dr = rot * TURN_RATE * dt;
pub fn update(&mut self, thr: Scalar, rot: Scalar, d_t: Scalar, map: &Map) {
let thrust = thr * THRUST_RATE * d_t;
let d_vel = [self.rotation.cos() * thrust, self.rotation.sin() * thrust];
let d_rot = rot * TURN_RATE * d_t;
self.rotation += dr;
self.velocity = add(self.velocity, dv);
self.rotation += d_rot;
self.velocity = add(self.velocity, d_vel);
self.position = add(self.position, self.velocity);
if self.position[0] > map.width {
self.velocity[0] = 0.0;
self.position[0] = map.width;
}
if self.position[0] < 0.0 {
self.velocity[0] = 0.0;
self.position[0] = 0.0;
}
if self.position[1] > map.height {
self.velocity[1] = 0.0;
self.position[1] = map.height;
}
if self.position[1] < 0.0 {
self.velocity[1] = 0.0;
self.position[1] = 0.0;
}
let oldpos = self.position;
self.position = map.clamp(oldpos);
if self.position[0] != oldpos[0] { self.velocity[0] = 0.0; }
if self.position[1] != oldpos[1] { self.velocity[1] = 0.0; }
}
pub fn trajectory(&self) -> (Vec2d, Vec2d, Vec2d) {