1 files changed, 15 insertions, 0 deletions
diff --git a/src_testbed/harness/plugin.rs b/src_testbed/harness/plugin.rs
new file mode 100644
index 0000000..078219e
--- /dev/null
+++ b/src_testbed/harness/plugin.rs
@@ -0,0 +1,15 @@
+use crate::harness::HarnessState;
+use crate::physics::PhysicsEvents;
+use crate::PhysicsState;
+
+pub trait HarnessPlugin {
+    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;
+}