1 files changed, 10 insertions, 0 deletions
diff --git a/src_testbed/harness/plugin.rs b/src_testbed/harness/plugin.rs
new file mode 100644
index 0000000..d5cf158
--- /dev/null
+++ b/src_testbed/harness/plugin.rs
@@ -0,0 +1,10 @@
+use crate::harness::HarnessState;
+use crate::PhysicsState;
+use crate::physics::PhysicsEvents;
+
+pub trait HarnessPlugin {
+    //FIXME: is run_callbacks needed?
+    fn run_callbacks(&mut self, physics: &mut PhysicsState, events: &PhysicsEvents, harness_state: &HarnessState, t: f32);
+    fn step(&mut self, physics: &mut PhysicsState);
+    fn profiling_string(&self) -> String;
+}
+\ No newline at end of file