Rework the event system

1 files changed, 21 insertions, 4 deletions

diff --git a/src/pipeline/event_handler.rs b/src/pipeline/event_handler.rs
index 9d7b17a..4ee5387 100644
--- a/src/pipeline/event_handler.rs
+++ b/src/pipeline/event_handler.rs
@@ -1,6 +1,23 @@
-use crate::geometry::{ContactEvent, IntersectionEvent};
+use crate::geometry::{ContactEvent, ContactPair, IntersectionEvent};
 use crossbeam::channel::Sender;
 
+bitflags::bitflags! {
+    #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
+    /// Flags affecting the behavior of the constraints solver for a given contact manifold.
+    pub struct ActiveEvents: u32 {
+        /// If set, Rapier will call `PhysicsHooks::FILTER_CONTACT_PAIRS` whenever relevant.
+        const INTERSECTION_EVENTS = 0b0001;
+        /// If set, Rapier will call `PhysicsHooks::filter_intersection_pair` whenever relevant.
+        const CONTACT_EVENTS = 0b0010;
+    }
+}
+
+impl Default for ActiveEvents {
+    fn default() -> Self {
+        ActiveEvents::empty()
+    }
+}
+
 /// Trait implemented by structures responsible for handling events generated by the physics engine.
 ///
 /// Implementors of this trait will typically collect these events for future processing.
@@ -13,12 +30,12 @@ pub trait EventHandler: Send + Sync {
     ///
     /// A contact event is emitted when two collider start or stop touching, independently from the
     /// number of contact points involved.
-    fn handle_contact_event(&self, event: ContactEvent);
+    fn handle_contact_event(&self, event: ContactEvent, contact_pair: &ContactPair);
 }
 
 impl EventHandler for () {
     fn handle_intersection_event(&self, _event: IntersectionEvent) {}
-    fn handle_contact_event(&self, _event: ContactEvent) {}
+    fn handle_contact_event(&self, _event: ContactEvent, _contact_pair: &ContactPair) {}
 }
 
 /// A physics event handler that collects events into a crossbeam channel.
@@ -45,7 +62,7 @@ impl EventHandler for ChannelEventCollector {
         let _ = self.intersection_event_sender.send(event);
     }
 
-    fn handle_contact_event(&self, event: ContactEvent) {
+    fn handle_contact_event(&self, event: ContactEvent, _: &ContactPair) {
         let _ = self.contact_event_sender.send(event);
     }
 }