collision detection stuff

README.md

@@ -0,0 +1,8 @@
+# daggmask
+
+Should not really be worms, project name subject to change.
+
+## How to run
+
+    cargo run --bin daggmask-server
+    cargo run --bin daggmask

client/src/main.rs

@@ -70,7 +70,7 @@ fn main() {
     app.add_plugins(DefaultPlugins);
     app.add_plugin(RenetClientPlugin);
     app.add_plugin(TransformPlugin);
-    //app.add_plugin(FrameTimeDiagnosticsPlugin::default());
+    app.add_plugin(FrameTimeDiagnosticsPlugin::default());
     app.add_plugin(LogDiagnosticsPlugin::default());
     app.add_plugin(EguiPlugin);
 
@@ -139,8 +139,6 @@ fn player_input(
     player_input.most_recent_tick = most_recent_tick.0;
 
     if mouse_button_input.just_pressed(MouseButton::Left) {
-        info!("player fired at {}", aimer.aiming_at);
-
         player_commands.send(PlayerCommand::BasicAttack {
             direction: aimer.aiming_at,
         });

server/src/main.rs

@@ -53,6 +53,38 @@ struct ClientTicks(HashMap<u64, Option<u32>>);
 
 const PLAYER_MOVE_SPEED: f32 = 50.0;
 
+#[derive(PartialEq, Eq, Clone, Copy, Component)]
+enum ShooterProjectileTag {
+    Id(u64),
+}
+
+struct ShooterProjectileFilter;
+impl<'a> PhysicsHooksWithQuery<&'a ShooterProjectileTag> for ShooterProjectileFilter {
+    fn filter_contact_pair(
+        &self,
+        context: PairFilterContextView,
+        user_data: &Query<&'a ShooterProjectileTag>,
+    ) -> Option<SolverFlags> {
+        let result = match user_data.get(context.collider1()).ok() {
+            Some(ShooterProjectileTag::Id(id1)) => match user_data.get(context.collider2()).ok() {
+                Some(ShooterProjectileTag::Id(id2)) => {
+                    // HACK: bullet hitting yourself shouldn't do damage when you shoot
+                    // TODO: find out how to be able to have bullets damage you after some time
+                    if id1 == id2 {
+                        None
+                    } else {
+                        Some(SolverFlags::COMPUTE_IMPULSES)
+                    }
+                }
+                _ => None,
+            },
+            _ => Some(SolverFlags::COMPUTE_IMPULSES),
+        };
+
+        result
+    }
+}
+
 fn new_renet_server() -> RenetServer {
     let server_addr = "127.0.0.1:5000".parse().unwrap();
     let socket = UdpSocket::bind(server_addr).unwrap();
@@ -70,9 +102,9 @@ fn main() {
     app.add_plugins(DefaultPlugins);
 
     app.add_plugin(RenetServerPlugin);
-    app.add_plugin(RapierPhysicsPlugin::<NoUserData>::default());
+    app.add_plugin(RapierPhysicsPlugin::<&ShooterProjectileTag>::default());
     app.add_plugin(RapierDebugRenderPlugin::default());
-    //app.add_plugin(FrameTimeDiagnosticsPlugin::default());
+    app.add_plugin(FrameTimeDiagnosticsPlugin::default());
     app.add_plugin(LogDiagnosticsPlugin::default());
     app.add_plugin(EguiPlugin);
 
@@ -92,6 +124,7 @@ fn main() {
     app.add_system(despawn_projectile_system);
     app.add_system_to_stage(CoreStage::PostUpdate, projectile_on_removal_system);
 
+    app.add_startup_system(setup_physics);
     app.add_startup_system(setup_level);
     app.add_startup_system(setup_simple_camera);
 
@@ -118,7 +151,7 @@ fn server_update_system(
 
                 visualizer.add_client(*id);
 
-                // Initialize other players for this new client
+                // initialize other players for this new client
                 for (entity, player) in players.iter() {
                     let message = bincode::serialize(&ServerMessages::PlayerCreate {
                         id: player.id,
@@ -128,7 +161,7 @@ fn server_update_system(
                     server.send_message(*id, ServerChannel::ServerMessages.id(), message);
                 }
 
-                // Spawn new player
+                // spawn new player
                 let player_entity = commands
                     .spawn_bundle(SpriteBundle {
                         sprite: Sprite {
@@ -142,10 +175,12 @@ fn server_update_system(
                     .insert(RigidBody::Dynamic)
                     .insert(LockedAxes::ROTATION_LOCKED)
                     .insert(Collider::cuboid(5., 5.))
+                    .insert(ActiveHooks::FILTER_CONTACT_PAIRS)
                     .insert(ActiveEvents::COLLISION_EVENTS)
                     .insert(PlayerInput::default())
                     .insert(Velocity::default())
                     .insert(Player { id: *id })
+                    .insert(ShooterProjectileTag::Id(*id))
                     .insert(Jumper {
                         jump_impulse: 80.,
                         is_jumping: false,
@@ -191,12 +226,8 @@ fn server_update_system(
                             let origin =
                                 Vec2::new(transform.translation().x, transform.translation().y);
 
-                            info!(
-                                "spawned attack on server at origin {} with direction {}",
-                                origin, direction
-                            );
-
-                            let entity = spawn_projectile(&mut commands, origin, direction);
+                            let entity =
+                                spawn_projectile(&mut commands, player.id, origin, direction);
                             let message = ServerMessages::SpawnProjectile { entity, origin };
                             let message = bincode::serialize(&message).unwrap();
 
@@ -295,16 +326,13 @@ fn jump_reset(
     for collision_event in collision_events.iter() {
         match collision_event {
             CollisionEvent::Started(e1, e2, _) => {
-                info!("collision started: e1: {}, e2: {}", e1.id(), e2.id());
                 for (entity, mut jumper) in query.iter_mut() {
                     if e1.id() == entity.id() || e2.id() == entity.id() {
                         jumper.is_jumping = false
                     }
                 }
             }
-            CollisionEvent::Stopped(e1, e2, _) => {
-                info!("collision stopped: {}, {}", e1.id(), e2.id());
-            }
+            CollisionEvent::Stopped(_e1, _e2, _) => {}
         }
     }
 }
@@ -343,7 +371,12 @@ fn projectile_on_removal_system(
     }
 }
 
-fn spawn_projectile(commands: &mut Commands, origin: Vec2, direction: Vec2) -> Entity {
+fn spawn_projectile(
+    commands: &mut Commands,
+    player_id: u64,
+    origin: Vec2,
+    direction: Vec2,
+) -> Entity {
     let normalized_direction = direction.normalize();
 
     commands
@@ -356,7 +389,9 @@ fn spawn_projectile(commands: &mut Commands, origin: Vec2, direction: Vec2) -> E
         .insert(Collider::ball(0.1))
         .insert(RigidBody::Dynamic)
         .insert(Velocity::linear(normalized_direction * 130.))
+        .insert(ActiveHooks::FILTER_CONTACT_PAIRS)
         .insert(ActiveEvents::COLLISION_EVENTS)
+        .insert(ShooterProjectileTag::Id(player_id))
         .insert(Projectile {
             duration: Timer::from_seconds(3.5, false),
         })
@@ -379,11 +414,17 @@ fn spawn_floor(mut commands: Commands) {
         .insert_bundle(TransformBundle::from(Transform::from_xyz(-50., 0., 0.)))
         .insert(RigidBody::Fixed)
         .insert(Collider::cuboid(width / 2., height / 2.))
+        .insert(ActiveHooks::FILTER_CONTACT_PAIRS)
         .insert(ActiveEvents::COLLISION_EVENTS)
         .insert(Floor);
 }
 
+pub fn setup_physics(mut commands: Commands) {
+    commands.insert_resource(PhysicsHooksWithQueryResource(Box::new(
+        ShooterProjectileFilter {},
+    )));
+}
 // set up the level
-pub fn setup_level(mut _commands: Commands) {
+fn setup_level(mut _commands: Commands) {
     info!("bygger level...");
 }