public void InitComponent(int entityID)
{
// Arrange.
HitboxCollisionComponent component;
// Act.
component = new HitboxCollisionComponent(entityID);
// Assert.
Assert.AreEqual(entityID, component.EntityID);
}
public void Equals_ShouldNotBeEqual(int entity1, int entity2)
{
// Arrange.
HitboxCollisionComponent component1;
HitboxCollisionComponent component2;
// Act.
component1 = new HitboxCollisionComponent(entity1);
component2 = new HitboxCollisionComponent(entity2);
// Assert.
Assert.IsFalse(component1 == component2);
}
public void Equals_ShouldBeEqual(int entityID)
{
// Arrange.
HitboxCollisionComponent component1;
HitboxCollisionComponent component2;
// Act.
component1 = new HitboxCollisionComponent(entityID);
component2 = new HitboxCollisionComponent(entityID);
// Assert.
Assert.IsTrue(component1 == component2);
}
public override void Run()
{
// If there is no state, setup world.
if (State == WorldState.None)
{
// Create ball.
int ballID = EntityManager.CreateEntity();
// Load texture.
Texture2D ballTexture = ContentManager.Load <Texture2D>("square");
// Create components.
HitboxCollisionComponent ballHitbox = new HitboxCollisionComponent(ballID);
PhysicsComponent ballPhysics = new PhysicsComponent(ballID, 0, 0, 0, 0, 1, 150, 150);
PositionComponent ballPosition = new PositionComponent(ballID,
(engine.ScreenWidth / 2) - (ballTexture.Width / 2), (engine.ScreenHeight / 2) - (ballTexture.Height / 2));
Texture2DRenderComponent ballRender = new Texture2DRenderComponent(ballID, 1, ballTexture);
TransformComponent ballTransform = new TransformComponent(ballID, ballTexture.Height, 0, 1, ballTexture.Width);
// Add components.
ComponentManager
.SetComponent(ballHitbox)
.SetComponent(ballPhysics)
.SetComponent(ballPosition)
.SetComponent(ballRender)
.SetComponent(ballTransform);
// Emit ball create event.
EventManager.Emit(new BallCreateEvent(ballID));
// Create player one paddle.
int paddleAID = EntityManager.CreateEntity();
// Load texture.
Texture2D paddleATexture = ContentManager.Load <Texture2D>("paddle");
// Create components.
CollidableComponent paddleACollidable = new CollidableComponent(paddleAID);
PhysicsComponent paddleAPhysics = new PhysicsComponent(paddleAID, 0, 0, 0, 0, 1, 0, 0);
PositionComponent paddleAPosition = new PositionComponent(paddleAID, 0, (engine.ScreenHeight / 2) - (paddleATexture.Height / 2));
Texture2DRenderComponent paddleARender = new Texture2DRenderComponent(paddleAID, 2, paddleATexture);
TransformComponent paddleATransform = new TransformComponent(paddleAID, paddleATexture.Height, 0, 1, paddleATexture.Width);
// Add components.
ComponentManager
.SetComponent(paddleACollidable)
.SetComponent(paddleAPhysics)
.SetComponent(paddleAPosition)
.SetComponent(paddleARender)
.SetComponent(paddleATransform);
// Emit paddle create event.
EventManager.Emit(new PaddleCreateEvent(paddleAID, 1));
// Create player two paddle.
int paddleBID = EntityManager.CreateEntity();
// Load texture.
Texture2D paddleBTexture = ContentManager.Load <Texture2D>("paddle");
// Create components.
CollidableComponent paddleBCollidable = new CollidableComponent(paddleBID);
PhysicsComponent paddleBPhysics = new PhysicsComponent(paddleBID, 0, 0, 0, 0, 1, 0, 0);
PositionComponent paddleBPosition = new PositionComponent(paddleBID, (engine.ScreenWidth - paddleBTexture.Width),
(engine.ScreenHeight / 2) - (paddleBTexture.Height / 2));
Texture2DRenderComponent paddleBRender = new Texture2DRenderComponent(paddleBID, 2, paddleBTexture);
TransformComponent paddleBTransform = new TransformComponent(paddleBID, paddleBTexture.Height, 0, 1, paddleBTexture.Width);
// Add components.
ComponentManager
.SetComponent(paddleBCollidable)
.SetComponent(paddleBPhysics)
.SetComponent(paddleBPosition)
.SetComponent(paddleBRender)
.SetComponent(paddleBTransform);
// Emit paddle create event.
EventManager.Emit(new PaddleCreateEvent(paddleBID, 2));
}
base.Run();
}
public override void Update(GameTime gameTime)
{
// Var to store collision event data.
IList <CollisionEvent> collisionEvents = new List <CollisionEvent>();
// Get running worlds.
IReadOnlyList <IWorld> worlds = worldManager.GetWorldsInState(WorldState.Running);
// Run through running worlds and check for collisions.
foreach (IWorld world in worlds)
{
// Store component manager.
IComponentManager componentManager = world.ComponentManager;
// Check if the world has the required component registries.
if (!componentManager.ContainsRegistry <CollidableComponent>() ||
!componentManager.ContainsRegistry <HitboxCollisionComponent>() ||
!componentManager.ContainsRegistry <PositionComponent>() ||
!componentManager.ContainsRegistry <TransformComponent>())
{
continue;
}
// Get component registries.
IComponentRegistry <CollidableComponent> collidableComponents =
(IComponentRegistry <CollidableComponent>)componentManager.GetRegistry <CollidableComponent>();
IComponentRegistry <HitboxCollisionComponent> hitboxCollisionComponents =
(IComponentRegistry <HitboxCollisionComponent>)componentManager.GetRegistry <HitboxCollisionComponent>();
IComponentRegistry <PositionComponent> positionComponents =
(IComponentRegistry <PositionComponent>)componentManager.GetRegistry <PositionComponent>();
IComponentRegistry <TransformComponent> transformComponents =
(IComponentRegistry <TransformComponent>)componentManager.GetRegistry <TransformComponent>();
// Iterate hitbox collision components.
for (int i = 0; i < hitboxCollisionComponents.Count; i++)
{
// Get components.
HitboxCollisionComponent hitbox = hitboxCollisionComponents[i];
PositionComponent position = positionComponents.Get(hitbox.EntityID);
TransformComponent transform = transformComponents.Get(hitbox.EntityID);
// Iterate collidable components and calculate collision.
for (int j = 0; j < collidableComponents.Count; j++)
{
// Get components for collidable entity.
CollidableComponent collidable = collidableComponents[j];
PositionComponent collidablePosition = positionComponents.Get(collidable.EntityID);
TransformComponent collidableTransform = transformComponents.Get(collidable.EntityID);
// Create hitboxes.
Rectangle entityA = new Rectangle((int)position.X, (int)position.Y, transform.Width, transform.Height);
Rectangle entityB = new Rectangle((int)collidablePosition.X, (int)collidablePosition.Y,
collidableTransform.Width, collidableTransform.Height);
// Perform collision detection.
if (entityA.Intersects(entityB))
{
// Entities collided.
collisionEvents.Add(new CollisionEvent(hitbox.EntityID, collidable.EntityID, world.ID));
}
}
}
}
// An entity can be both a collider and a collidable, so filter out any events where this is true.
// We could check this before performing the collision detection but we want to avoid
// branch predictions in the hot path as much as possible.
collisionEvents = collisionEvents.Where(x => x.Collidable != x.Collider).ToList();
// Emit events.
foreach (CollisionEvent collisionEvent in collisionEvents)
{
eventManager.Emit(collisionEvent);
}
}
public override void Run()
{
// If there is no state, setup world.
if (State == WorldState.None)
{
// Initialise random number generator.
Random random = new Random();
// Var to hold IDs of created balls.
int[] ballIDs = new int[Pong.BallCount];
// Create balls.
for (int i = 0; i < ballIDs.Length; i++)
{
// Create ball.
int ballID = EntityManager.CreateEntity();
// Load texture.
Texture2D ballTexture = ContentManager.Load <Texture2D>("square");
// Create components.
HitboxCollisionComponent ballHitbox = new HitboxCollisionComponent(ballID);
PhysicsComponent ballPhysics = new PhysicsComponent(ballID, 0, 0, 0, 0, 1, 150, 150);
PositionComponent ballPosition = new PositionComponent(ballID,
random.Next(200, engine.ScreenWidth - 201) - (ballTexture.Width / 2),
random.Next(150, engine.ScreenHeight - 151) - (ballTexture.Height / 2));
Texture2DRenderComponent ballRender = new Texture2DRenderComponent(ballID, 1, ballTexture);
TransformComponent ballTransform = new TransformComponent(ballID, ballTexture.Height, 0, 0.35f, ballTexture.Width);
// Add components.
ComponentManager
.SetComponent(ballHitbox)
.SetComponent(ballPhysics)
.SetComponent(ballPosition)
.SetComponent(ballRender)
.SetComponent(ballTransform);
// Add ID to array.
ballIDs[i] = ballID;
}
// Emit ball create event.
EventManager.Emit(new BallCreateEvent(ballIDs));
// Create player one paddle.
int paddleAID = EntityManager.CreateEntity();
// Load texture.
Texture2D paddleATexture = ContentManager.Load <Texture2D>("paddle");
// Create components.
CollidableComponent paddleACollidable = new CollidableComponent(paddleAID);
PhysicsComponent paddleAPhysics = new PhysicsComponent(paddleAID, 0, 0, 0, 0, 1, 0, 0);
PositionComponent paddleAPosition = new PositionComponent(paddleAID, 0, (engine.ScreenHeight / 2) - (paddleATexture.Height / 2));
Texture2DRenderComponent paddleARender = new Texture2DRenderComponent(paddleAID, 2, paddleATexture);
TransformComponent paddleATransform = new TransformComponent(paddleAID, paddleATexture.Height, 0, 1, paddleATexture.Width);
// Add components.
ComponentManager
.SetComponent(paddleACollidable)
.SetComponent(paddleAPhysics)
.SetComponent(paddleAPosition)
.SetComponent(paddleARender)
.SetComponent(paddleATransform);
// Emit paddle create event.
EventManager.Emit(new PaddleCreateEvent(paddleAID, 1));
// Create player two paddle.
int paddleBID = EntityManager.CreateEntity();
// Load texture.
Texture2D paddleBTexture = ContentManager.Load <Texture2D>("paddle");
// Create components.
CollidableComponent paddleBCollidable = new CollidableComponent(paddleBID);
PhysicsComponent paddleBPhysics = new PhysicsComponent(paddleBID, 0, 0, 0, 0, 1, 0, 0);
PositionComponent paddleBPosition = new PositionComponent(paddleBID, (engine.ScreenWidth - paddleBTexture.Width),
(engine.ScreenHeight / 2) - (paddleBTexture.Height / 2));
Texture2DRenderComponent paddleBRender = new Texture2DRenderComponent(paddleBID, 2, paddleBTexture);
TransformComponent paddleBTransform = new TransformComponent(paddleBID, paddleBTexture.Height, 0, 1, paddleBTexture.Width);
// Add components.
ComponentManager
.SetComponent(paddleBCollidable)
.SetComponent(paddleBPhysics)
.SetComponent(paddleBPosition)
.SetComponent(paddleBRender)
.SetComponent(paddleBTransform);
// Emit paddle create event.
EventManager.Emit(new PaddleCreateEvent(paddleBID, 2));
}
base.Run();
}