WIP crisper camera controls (apply acceleration)

src/actor.rs

@@ -17,6 +17,7 @@
 use crate::prelude::*;
 use bevy::prelude::*;
 use bevy_xpbd_3d::prelude::*;
+use std::collections::HashMap;
 
 pub const ENGINE_SPEED_FACTOR: f32 = 30.0;
 const MAX_TRANSMISSION_DISTANCE: f32 = 100.0;
@@ -39,6 +40,7 @@ impl Plugin for ActorPlugin {
                 update_power.run_if(game_running),
                 handle_gravity.run_if(game_running),
                 handle_wants_rotation.run_if(game_running),
+                handle_wants_acceleration.run_if(game_running),
                 handle_wants_maxrotation.run_if(game_running),
                 handle_wants_maxvelocity
                     .run_if(game_running)
@@ -150,6 +152,12 @@ impl Default for ExperiencesGForce {
     }
 }
 
+#[derive(Component, Default)]
+pub struct WantsAcceleration {
+    pub direction: DVec3,
+    pub brake: bool,
+}
+
 #[derive(Component)]
 pub struct Player; // Attached to the suit of the player
 #[derive(Component)]
@@ -580,6 +588,7 @@ pub fn handle_vehicle_enter_exit(
                             commands.entity(driver).remove::<PlayerCamera>();
                             commands.entity(driver).remove::<Collider>();
                             commands.entity(driver).insert(JustNowEnteredVehicle);
+                            commands.entity(vehicle).insert(WantsAcceleration::default());
                             commands.entity(vehicle).remove::<hud::IsTargeted>();
                             commands.entity(vehicle).insert(PlayerCamera);
                             commands.entity(vehicle).insert(PlayerDrivesThis);
@@ -706,14 +715,89 @@ fn handle_wants_maxvelocity(
     }
 }
 
-fn handle_wants_rotation(
-    mut q_actor: Query<(&mut Rotation, &WantsRotation)>,
-) {
+fn handle_wants_rotation(mut q_actor: Query<(&mut Rotation, &WantsRotation)>) {
     for (mut rot, setrot) in &mut q_actor {
         **rot = setrot.0;
     }
 }
 
+fn handle_wants_acceleration(
+    jupiter_pos: Res<game::JupiterPos>,
+    mut q_actor: Query<(
+        Entity,
+        &Transform,
+        &Position,
+        &mut LinearVelocity,
+        Option<&WantsAcceleration>,
+        Option<&hud::IsTargeted>,
+        Option<&PlayerCamera>,
+    )>,
+) {
+    // Vector elements: (Entity, is_player, pos)
+    let mut request_closest: Vec<(Entity, bool, DVec3)> = vec![];
+    let mut closest_map: HashMap<Entity, DVec3> = HashMap::new();
+
+    // First, determine whether any actor wants to brake (=match velocity)
+    for (entity, _, pos, _, accel, _, is_player) in &mut q_actor {
+        if accel.is_some() && accel.unwrap().brake {
+            request_closest.push((entity, is_player.is_some(), pos.0.clone()));
+        }
+    }
+
+    // If an actor is braking, find out relative to what it wants to brake
+    for (entity, is_player, pos) in &request_closest {
+        let mut target_v: Option<DVec3> = None;
+
+        // First, if this is the player, check whether they targeted anything
+        // so we can match velocity to the target.
+        if *is_player {
+            for (_, _, _, v, _, is_target, _) in &q_actor {
+                if is_target.is_some() {
+                    target_v = Some(v.0);
+                    break;
+                }
+            }
+        }
+
+        // If not, simply look for the closest object and match velocity to that.
+        if target_v.is_none() {
+            let mut closest_distance = camera::MAX_DIST_FOR_MATCH_VELOCITY;
+            for (testentity, _, testpos, v, _, _, _) in &q_actor {
+                if *entity != testentity {
+                    let distance = (*pos - testpos.0).length();
+                    if distance < closest_distance {
+                        target_v = Some(v.0);
+                        closest_distance = distance;
+                    }
+                }
+            }
+        }
+
+        // Last resort: Match velocity to the orbital velocity around Jupiter
+        if target_v.is_none() {
+            let relative_pos = *pos - jupiter_pos.0;
+            target_v = Some(nature::orbital_velocity(relative_pos, nature::JUPITER_MASS));
+        }
+
+        if let Some(target_v) = target_v {
+            closest_map.insert(*entity, target_v);
+        }
+    }
+
+    for (entity, trans, _, mut v, accel, _, _) in &mut q_actor {
+        if let Some(accel) = accel {
+            if accel.brake {
+                if let Some(target_v) = closest_map.get(&entity) {
+                    **v = *target_v;
+                }
+            } else if accel.direction != DVec3::ZERO {
+                let delta_v = trans.rotation * accel.direction.as_vec3();
+                **v += delta_v.as_dvec3();
+            }
+        }
+    }
+}
+
 fn handle_wants_lookat(
     mut query: Query<
         (

src/camera.rs

@@ -444,10 +444,15 @@ fn manage_player_actor(
 }
 
 pub fn apply_input_to_player(
-    settings: Res<var::Settings>,
     mut commands: Commands,
+    settings: Res<var::Settings>,
     mut q_player: Query<
-        (Entity, &Rotation, Option<&mut actor::WantsRotation>),
+        (
+            Entity,
+            &mut actor::WantsAcceleration,
+            &Rotation,
+            Option<&mut actor::WantsRotation>,
+        ),
         With<actor::PlayerCamera>,
     >,
     mut mouse_events: EventReader<MouseMotion>,
@@ -458,7 +463,7 @@ pub fn apply_input_to_player(
     if player.is_err() {
         return;
     }
-    let (entity, rot, setrot) = player.unwrap();
+    let (entity, mut accel, rot, setrot) = player.unwrap();
 
     let (win_res_x, win_res_y): (f32, f32);
     if let Ok(window) = &q_windows.get_single() {
@@ -506,6 +511,32 @@ pub fn apply_input_to_player(
                 .try_insert(actor::WantsRotation(rot_target));
         }
     }
+
+    // Determine acceleration
+    let mut axis_input: DVec3 = DVec3::ZERO;
+    if key_input.pressed(settings.key_forward) || settings.cruise_control_active {
+        axis_input.z += 1.0;
+    }
+    if key_input.pressed(settings.key_back) {
+        axis_input.z -= 1.0;
+    }
+    if key_input.pressed(settings.key_right) {
+        axis_input.x -= 1.0;
+    }
+    if key_input.pressed(settings.key_left) {
+        axis_input.x += 1.0;
+    }
+    if key_input.pressed(settings.key_up) {
+        axis_input.y += 1.0;
+    }
+    if key_input.pressed(settings.key_down) {
+        axis_input.y -= 1.0;
+    }
+    //axis_input = axis_input.clamp(DVec3::splat(-1.0), DVec3::splat(1.0));
+
+    // Apply acceleration to player
+    accel.direction = axis_input;
+    accel.brake = key_input.pressed(settings.key_stop);
 }
 
 #[allow(clippy::too_many_arguments)]

src/cmd.rs

@@ -1134,6 +1134,7 @@ fn spawn_entities(
         if state.is_player {
             actor.insert(actor::Player);
             actor.insert(actor::PlayerCamera);
+            actor.insert(actor::WantsAcceleration::default());
             actor.insert(hud::AugmentedRealityOverlayBroadcaster);
             //actor.insert(actor::WantsRotation(Quat::IDENTITY));
             ew_updateavatar.send(hud::UpdateAvatarEvent);