Files
osmium/examples/components/mod.rs
T

125 lines
3.1 KiB
Rust

pub mod threads;
use std::{any::Any, sync::Arc};
use osmium::{entity::Component, renderer::Point};
pub struct Jumping(pub u16, pub u16);
pub struct ZigZag(pub u16);
pub struct Velocity(pub Point<i32>);
impl Component for Velocity {
fn tick(&mut self, entity: &std::sync::Arc<osmium::entity::Entity>, tick: u16) {
let mut position = entity.position();
apply_velocity(tick, self.0.x, &mut position.x);
apply_velocity(tick, self.0.y, &mut position.y);
}
fn as_any_mut(&mut self) -> &mut dyn std::any::Any {
self
}
}
fn apply_velocity(tick: u16, velocity: i32, x: &mut u16) -> bool {
let abs_v = velocity.abs();
if abs_v == 0 {
return false;
}
let interval = (1000 / abs_v).max(1);
if tick as i32 % interval == 0 {
if velocity > 0 {
*x = x.saturating_add(1);
} else {
*x = x.saturating_sub(1);
}
return true;
}
false
}
impl Component for Jumping {
fn tick(&mut self, entity: &Arc<osmium::entity::Entity>, _tick: u16) {
let target = self.1;
let mut pos = entity.position();
// on first tick, start upward velocity
if self.0 == 0 {
std::thread::spawn({
let entity = entity.clone();
move || {
entity.update_component(|v: &mut Velocity| {
v.0.y = -150;
});
}
});
}
// If above the peak, fall down
if pos.y < target - 6 {
std::thread::spawn({
let entity = entity.clone();
move || {
entity.update_component(|v: &mut Velocity| {
v.0.y = 150;
});
}
});
}
// If we reached the ground, stop and remove component
if self.0 > 30 && pos.y >= target {
pos.y = target;
std::thread::spawn({
let entity = entity.clone();
move || {
entity.update_component(|v: &mut Velocity| {
v.0.y = 0;
});
entity.remove_component::<Jumping>();
}
});
}
self.0 += 1;
}
fn as_any_mut(&mut self) -> &mut dyn Any {
self
}
}
impl Component for ZigZag {
fn tick(&mut self, entity: &Arc<osmium::entity::Entity>, _tick: u16) {
let pos = entity.get_position();
if pos.x == 0 {
std::thread::spawn({
let entity = entity.clone();
move || {
entity.update_component(|v: &mut Velocity| {
v.0.x = 200;
});
}
});
}
if pos.x >= self.0 {
std::thread::spawn({
let entity = entity.clone();
move || {
entity.update_component(|v: &mut Velocity| {
v.0.x = -200;
});
}
});
}
}
fn as_any_mut(&mut self) -> &mut dyn Any {
self
}
}