Add debug wireframe rendering support

game/src/main.rs

@@ -8,7 +8,8 @@ use winit::event::{Event, WindowEvent};
 use systems::debug_camera::FPSDebugCameraSystem;
 use crate::systems::common::should_draw_menu;
 use crate::systems::{
-    DisplaySettings, KeybindsSystem, KinematicCharacterController, MenuSystem, PhysicsSystem
+    DisplaySettings, KeybindsSystem, KinematicCharacterController, MenuSystem, PhysicsSystem,
+    PhysicsDebugSystem,
 };
 
 const TEST_GLTF: &str = "sphere.glb";
@@ -125,6 +126,7 @@ impl System for MainSystem {
 fn main() {
     raidillon_app::App::new()
         .add_system::<PhysicsSystem>()
+        .add_system::<PhysicsDebugSystem>()
         .add_system::<KeybindsSystem>()
         .add_system::<KinematicCharacterController>()
         .add_system::<FPSDebugCameraSystem>()

game/src/systems/mod.rs

@@ -1,4 +1,5 @@
 mod physics;
+mod physics_debug;
 mod kinematic_character_controller;
 mod keybinds;
 mod menu;
@@ -7,6 +8,7 @@ pub mod common;
 mod display_settings;
 
 pub use physics::PhysicsSystem;
+pub use physics_debug::PhysicsDebugSystem;
 pub use kinematic_character_controller::KinematicCharacterController;
 pub use keybinds::KeybindsSystem;
 pub use menu::MenuSystem;

game/src/systems/physics_debug.rs

@@ -0,0 +1,35 @@
+use raidillon_app::prelude::*;
+
+/// renders aabb wireframes for all physics colliders
+#[derive(Default)]
+pub struct PhysicsDebugSystem;
+
+impl System for PhysicsDebugSystem {
+    fn frame_update(&mut self, res: &mut EngineResources, scene: &mut Scene) {
+        let pctx = res.get::<PlatformContext>().expect("PlatformContext missing").clone();
+
+        let mut debug_wireframes = pctx.debug_wireframes.borrow_mut();
+        if !debug_wireframes.enabled {
+            return;
+        }
+
+        let physics = match scene.resources.get::<Physics>() {
+            Some(p) => p,
+            None => return,
+        };
+
+        let color = [1.0, 0.0, 0.0, 1.0];
+
+        for (_, collider) in physics.collider_set.iter() {
+            let aabb = collider.compute_aabb();
+            let min = aabb.mins;
+            let max = aabb.maxs;
+
+            debug_wireframes.add_box(
+                [min.x, min.y, min.z],
+                [max.x, max.y, max.z],
+                color,
+            );
+        }
+    }
+}