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camera works

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This commit is contained in:
griffi-gh 2023-01-15 19:31:02 +01:00
parent 078520ebbe
commit 2056170f34
2 changed files with 57 additions and 17 deletions
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50
src/game.rs
View file

@ -1,6 +1,6 @@
use glium::{Surface, uniform};
use glium::glutin::{
event::{Event, WindowEvent},
event::{Event, WindowEvent, VirtualKeyCode},
event_loop::{EventLoop, ControlFlow},
};
@ -24,22 +24,17 @@ pub fn run() {
log::info!("loading assets");
let assets = Assets::load_all_sync(&display);
log::info!("init camera");
let camera = Camera {
position: [0., 0., -1.],
direction: [0., 0., 1.],
..Default::default()
};
let mut camera = Camera::default();
log::info!("game loaded");
//=======================
let vertex1 = ChunkVertex { position: [-0.5, -0.5, 1.], uv: [0., 0.], normal: [0., 1., 0.] };
let vertex2 = ChunkVertex { position: [ 0.0, 0.5, 1.], uv: [0., 1.], normal: [0., 1., 0.] };
let vertex3 = ChunkVertex { position: [ 0.5, -0.25, 1.], uv: [1., 1.], normal: [0., 1., 0.] };
let vertex1 = ChunkVertex { position: [-0.5, -0.5, 0.], uv: [0., 0.], normal: [0., 1., 0.] };
let vertex2 = ChunkVertex { position: [ 0.0, 0.5, 0.], uv: [0., 1.], normal: [0., 1., 0.] };
let vertex3 = ChunkVertex { position: [ 0.5, -0.25, 0.], uv: [1., 1.], normal: [0., 1., 0.] };
let shape = vec![vertex1, vertex2, vertex3];
let vertex_buffer = glium::VertexBuffer::new(&display, &shape).unwrap();
//=======================
event_loop.run(move |ev, _, control_flow| {
#[allow(clippy::single_match, clippy::collapsible_match)]
match ev {
@ -49,12 +44,45 @@ pub fn run() {
*control_flow = ControlFlow::Exit;
return
},
WindowEvent::KeyboardInput { input, .. } => {
match input.virtual_keycode {
Some(VirtualKeyCode::Up) => {
camera.pitch += 0.01;
}
Some(VirtualKeyCode::Down) => {
camera.pitch -= 0.01;
}
Some(VirtualKeyCode::Right) => {
camera.yaw -= 0.01;
}
Some(VirtualKeyCode::Left) => {
camera.yaw += 0.01;
}
Some(VirtualKeyCode::W) => {
camera.position[2] += 0.01;
}
Some(VirtualKeyCode::S) => {
camera.position[2] -= 0.01;
}
Some(VirtualKeyCode::A) => {
camera.position[0] -= 0.01;
}
Some(VirtualKeyCode::D) => {
camera.position[0] += 0.01;
}
_ => ()
}
}
_ => ()
},
_ => ()
}
let mut target = display.draw();
let target_dimensions = target.get_dimensions();
camera.update_direction();
let perspective = camera.perspective_matrix(target_dimensions);
let view = camera.view_matrix();
target.clear_color_and_depth((0.5, 0.5, 1., 1.), 1.);
@ -67,7 +95,7 @@ pub fn run() {
[1., 0., 0., 0.],
[0., 1., 0., 0.],
[0., 0., 1., 0.],
[0., 0., 0., 1.0f32]
[0., 0., 0., 1.0_f32]
],
view: view,
perspective: perspective,

24
src/game/camera.rs
View file

@ -6,6 +6,8 @@
use std::f32::consts::PI;
pub struct Camera {
pub yaw: f32,
pub pitch: f32,
pub position: [f32; 3],
pub direction: [f32; 3],
pub up: [f32; 3],
@ -14,6 +16,15 @@ pub struct Camera {
pub zfar: f32,
}
impl Camera {
/// Update camera direction based on yaw/pitch
pub fn update_direction(&mut self) {
self.direction = [
self.yaw.cos() * self.pitch.cos(),
self.pitch.sin(),
self.yaw.sin() * self.pitch.cos(),
];
}
pub fn view_matrix(&self) -> [[f32; 4]; 4] {
let position = self.position;
let direction = self.direction;
@ -55,14 +66,13 @@ impl Camera {
let aspect_ratio = height as f32 / width as f32;
let f = 1.0 / (fov / 2.0).tan();
[
[f * aspect_ratio , 0.0, 0.0 , 0.0],
[ 0.0 , f , 0.0 , 0.0],
[ 0.0 , 0.0, (zfar+znear)/(zfar-znear) , 1.0],
[ 0.0 , 0.0, -(2.0*zfar*znear)/(zfar-znear), 0.0],
[f*aspect_ratio, 0.0, 0.0, 0.0],
[0.0, f, 0.0, 0.0],
[0.0, 0.0, (zfar+znear)/(zfar-znear), 1.0],
[0.0, 0.0, -(2.0*zfar*znear)/(zfar-znear), 0.0],
]
}
}
}
impl Default for Camera {
fn default() -> Self {
Self {
@ -72,6 +82,8 @@ impl Default for Camera {
fov: PI / 3.,
zfar: 1024.,
znear: 0.1,
yaw: 0.,
pitch: 0.,
}
}
}