Adds AABB constructor stub for building with a mesh and center point

crates/core/src/core.rs

@@ -1,14 +1,14 @@
 
-use bevy::prelude::*;
+use bevy::{pbr::wireframe::{Wireframe, WireframePlugin}, prelude::*};
 
-use physics::{PhysicsPlugin, components::Velocity};
+use physics::{components::{Velocity, AABB}, PhysicsPlugin};
 
 pub struct CorePlugin;
 impl Plugin for CorePlugin
 {
 	fn build(&self, app: &mut App) 
 	{
-		app.add_plugins(PhysicsPlugin)
+		app.add_plugins(PhysicsPlugin {debug_draw_colliders: true})
 			.add_systems(Startup, setup);
 	}
 }
@@ -35,13 +35,19 @@ fn setup(mut commands: Commands, server: Res<AssetServer>, mut ambient_light: Re
         ..default()
     });
 
+	// TESTING:
+
+
 	// BRICK
 	let brick_handle: Handle<Scene> = server.load("brick.glb#Scene0");
-	commands.spawn(SceneBundle {
+	commands.spawn((SceneBundle {
 		scene: brick_handle,
 		transform: Transform::from_xyz(0.0, 7.0, 0.0),
 		.. default()
-	});
+		// TODO: need to figure out how to get the box dimensions from the loaded scene
+		}, 
+		AABB::from_point_and_size(Vec3::new(0.0, 7.0, 0.0), Vec3::new(2.0, 2.0, 2.0))
+	));
 
 	// BALL
 	let ball_handle: Handle<Scene> = server.load("ball.glb#Scene0");

crates/physics/src/components.rs

@@ -43,6 +43,14 @@ impl AABB
 		}
 	}
 
+	pub fn from_point_and_mesh(center: Vec3, mesh: Handle<Mesh>) -> Self
+	{
+		// TODO: Build an AABB around the given mesh
+		// Find the smallest and largets vertices on each axis
+		// and use those to set the extents of the AABB
+		todo!()
+	}
+
 	// ACCESSORS
 	pub fn get_center_point(&self) -> Vec3
 	{
@@ -123,4 +131,7 @@ impl AABB
 		
 		true
 	}
-}
+}
+
+#[derive(Component)]
+pub struct ColliderDebug;

crates/physics/src/lib.rs

@@ -2,13 +2,30 @@
 pub mod components;
 pub mod systems;
 
-use bevy::prelude::*;
+use bevy::{pbr::wireframe::WireframePlugin, prelude::*};
+
+pub struct PhysicsPlugin
+{
+	pub debug_draw_colliders: bool,
+}
 
-pub struct PhysicsPlugin;
 impl Plugin for PhysicsPlugin
 {
 	fn build(&self, app: &mut App) 
 	{
-		app.add_systems(Update, systems::update_movement);
+		app.add_plugins(WireframePlugin)
+			.add_systems(Update, systems::update_movement);
+
+		if self.debug_draw_colliders
+		{
+			app.add_systems(Update, systems::debug_draw_aabbs);
+		}
+	}
+}
+
+impl Default for PhysicsPlugin
+{
+	fn default() -> Self {
+		Self { debug_draw_colliders: false }
 	}
 }

crates/physics/src/systems.rs

@@ -1,7 +1,7 @@
 
-use bevy::prelude::*;
+use bevy::{pbr::wireframe::{Wireframe, WireframeColor}, prelude::*};
 
-use crate::components::Velocity;
+use crate::components::{ColliderDebug, Velocity, AABB};
 
 pub(crate) fn update_movement(mut moving_objects: Query<(&Velocity, &mut Transform)>, time: Res<Time>)
 {
@@ -11,3 +11,67 @@ pub(crate) fn update_movement(mut moving_objects: Query<(&Velocity, &mut Transfo
 	}
 }
 
+pub(crate) fn update_colliders()
+{
+	todo!()
+}
+
+pub(crate) fn debug_draw_aabbs(
+	mut commands: Commands, 
+	aabbs: Query<(Entity, &AABB), Without<ColliderDebug>>, 
+	mut meshes: ResMut<Assets<Mesh>>, 
+	mut materials: ResMut<Assets<StandardMaterial>>
+){
+
+
+	// TODO: Spawn one of these for each collider in the scene,
+	//		 need to set the scale, rotation and translation to match the AABB
+	for (entity, _aabb) in aabbs.iter()
+	{
+		let cube_mesh_handle: Handle<Mesh> = meshes.add(Cuboid::default());
+		commands.entity(entity).insert((PbrBundle 
+			{
+				mesh: cube_mesh_handle,
+				material: materials.add(StandardMaterial 
+				{
+					base_color: Color::Rgba { red: 0.0, green: 1.0, blue: 0.0, alpha: 0.25 },
+					alpha_mode: AlphaMode::Blend,
+					..default()
+				}),
+
+				transform: Transform::from_xyz(0.0, 7.25, -1.0)
+				//.with_rotation(Quat::from_rotation_y(45.0))
+				.with_rotation(Quat::from_rotation_x(45.0)),
+				..default()
+			},
+
+			Wireframe, 
+			WireframeColor { color: Color::GREEN },
+		));
+	}
+
+
+	// TEST CUBE
+	// Spawns a cube with a colored wireframe and partially transparent body
+	// Should be able to update the material on the fly to change the colors
+	// to red when the AABB is intersecting another AABB
+	// commands.spawn((PbrBundle {
+	// 	mesh: cube_mesh_handle,
+	// 	material: materials.add(StandardMaterial {
+	// 		base_color: Color::Rgba { red: 0.0, green: 1.0, blue: 0.0, alpha: 0.25 },
+	// 		alpha_mode: AlphaMode::Blend,
+	// 		..default()
+	// 	}),
+	// 	transform: Transform::from_xyz(0.0, 7.25, -1.0)
+	// 		//.with_rotation(Quat::from_rotation_y(45.0))
+	// 		.with_rotation(Quat::from_rotation_x(45.0)),
+	// 	..default()
+	// 	},
+	// 	Wireframe, WireframeColor { color: Color::GREEN },
+	// ));
+}
+
+pub(crate) fn debug_update_colliders(colliders: Query<&ColliderDebug>)
+{
+	
+}