nebkor/cyber_rider
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Move gravity management into RapierConfiguration resource.

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Doesn't use external forces for gravity, which means that the wheels are now also affected by
gravity.
This commit is contained in:
Joe Ardent 2023-02-19 15:25:14 -08:00
parent 0f330283ee
commit d78e93b76a
2 changed files with 5 additions and 10 deletions
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1
src/action/mod.rs
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@ -20,7 +20,6 @@ impl Plugin for CyberActionPlugin {
.register_type::<CatControllerSettings>() .register_type::<CatControllerSettings>()
.add_plugin(RapierPhysicsPlugin::<NoUserData>::default()) .add_plugin(RapierPhysicsPlugin::<NoUserData>::default())
.add_plugin(FrameTimeDiagnosticsPlugin::default()) .add_plugin(FrameTimeDiagnosticsPlugin::default())
.add_startup_system(zero_gravity)
.add_system(surface_fix.label("surface_fix")) .add_system(surface_fix.label("surface_fix"))
.add_system(gravity.before("cat")) .add_system(gravity.before("cat"))
.add_system(falling_cat.label("cat")) .add_system(falling_cat.label("cat"))

14
src/action/systems.rs
View file

@ -18,19 +18,15 @@ use crate::{
const PITCH_SCALE: f32 = 0.2; const PITCH_SCALE: f32 = 0.2;
/// Disable gravity in Rapier.
pub(super) fn zero_gravity(mut config: ResMut<RapierConfiguration>) {
config.gravity = Vec3::ZERO;
}
/// The gravity vector points from the cyberbike to the center of the planet. /// The gravity vector points from the cyberbike to the center of the planet.
pub(super) fn gravity( pub(super) fn gravity(
mut query: Query<(&Transform, &mut ExternalForce, &ReadMassProperties), With<CyberBikeBody>>, mut query: Query<(&Transform, &mut ExternalForce), With<CyberBikeBody>>,
settings: Res<MovementSettings>, settings: Res<MovementSettings>,
mut rapier_config: ResMut<RapierConfiguration>,
) { ) {
let (xform, mut forces, mprops) = query.single_mut(); let (xform, mut forces) = query.single_mut();
let grav = xform.translation.normalize() * -settings.gravity * mprops.0.mass; rapier_config.gravity = xform.translation.normalize() * -settings.gravity;
forces.force = grav; forces.force = Vec3::ZERO;
forces.torque = Vec3::ZERO; forces.torque = Vec3::ZERO;
} }