label TIMESTAMP

This commit is contained in:
Quaternions 2023-09-07 18:33:37 -07:00
parent 6262553c02
commit 4e83bee60f

View File

@ -1,7 +1,7 @@
pub struct Body {
pub position: glam::Vec3,//I64 where 2^32 = 1 u
pub velocity: glam::Vec3,//I64 where 2^32 = 1 u/s
pub time: i64,//nanoseconds x xxxxD!
pub time: TIMESTAMP,//nanoseconds x xxxxD!
}
pub struct PhysicsState {
@ -14,9 +14,12 @@ pub struct PhysicsState {
pub grounded: bool,
pub walkspeed: f32,
}
pub type TIMESTAMP = i64;
const CONTROL_JUMP:u32 = 0b01000000;//temp
impl PhysicsState {
pub fn run(&mut self, time: i64, control_dir: glam::Vec3, controls: u32){
pub fn run(&mut self, time: TIMESTAMP, control_dir: glam::Vec3, controls: u32){
let target_tick = (time/10_000_000) as u32;//100t
//the game code can run for 1 month before running out of ticks
for tick in self.tick+1..=target_tick {
@ -49,10 +52,10 @@ impl PhysicsState {
}
self.tick=target_tick;
self.body.time=target_tick as i64*10_000_000;
self.body.time=target_tick as TIMESTAMP*10_000_000;
}
pub fn extrapolate_position(&self, time: i64) -> glam::Vec3 {
pub fn extrapolate_position(&self, time: TIMESTAMP) -> glam::Vec3 {
let dt=(time-self.body.time) as f64/1_000_000_000f64;
self.body.position+self.body.velocity*(dt as f32)+self.gravity*((0.5*dt*dt) as f32)
}