30 lines
1.2 KiB
Rust
30 lines
1.2 KiB
Rust
use raidillon_app::prelude::*;
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/// Do physics calculations and apply to world.
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#[derive(Default)]
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pub struct PhysicsSystem;
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impl System for PhysicsSystem {
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fn load_world(&mut self, res: &mut EngineResources, scene: &mut Scene) {
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let p = Physics::default();
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scene.resources.insert(p);
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}
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fn fixed_update(&mut self, res: &mut EngineResources, scene: &mut Scene) {
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let pctx = res.get::<PlatformContext>().expect("PlatformContext missing").clone();
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let physics = scene.resources.get_mut::<Physics>().expect("Physics missing");
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physics.step(pctx.time_ctx.fixed_dt);
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// apply calculations to dynamic bodies
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let mut query = scene.world.query::<(&mut Transform, &RigidBodyComponent)>();
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for (_ent, (tr, rb_component)) in query.iter() {
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if let Some(body) = physics.get_rigid_body(rb_component.0) {
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let pos = body.position();
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let translation = Physics::rapier_translation_to_glam(&pos.translation.vector);
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let rotation = Physics::rapier_rotation_to_glam(&pos.rotation);
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tr.translation = translation;
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tr.rotation = rotation;
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}
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}
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}
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}
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