public override void Start()
{
//Kick off one message -- it'll get physics going on this screen.
Switchboard.Instance.Broadcast(new Message("ScreenStarted"));
//Add the ground actor so they'll have something to bounce off.
p3 = new PhysicsActor();
p3.Position = new Vector2(0.0f, -11.0f);
p3.Size = new Vector2(30.0f, 5.0f);
p3.Color = new Color(0.0f, 1.0f, 0.0f);
p3.Density = 0.0f;
p3.Friction = 0.1f;
World.Instance.Add(p3);
//Demo housekeeping below this point.
#region Demo Housekeeping
String outputText = "These actors are responding to Messages\nthat we're sending through our central Switchboard.";
outputText += "\n\nYou can have actors respond to and broadcast arbitrary messages,\nwhich makes it easy to handle events in your game.";
outputText += "\n\n\n(Those actors have been hanging out up there this whole time,\nwaiting for the message that this screen had started\nbefore they dropped in.)";
t1 = new TextActor("Console", outputText);
t1.Position = new Vector2(0.0f, 3.5f);
t1.TextAlignment = TextActor.Alignment.Center;
World.Instance.Add(t1);
TextActor fileLoc = new TextActor("ConsoleSmall", "DemoScreenMessagePassing.cs");
fileLoc.Position = World.Instance.Camera.ScreenToWorld(5, 755);
fileLoc.Color = new Color(.3f, .3f, .3f);
World.Instance.Add(fileLoc);
_objects.Add(fileLoc);
_objects.Add(t1);
_objects.Add(p1);
_objects.Add(p2);
_objects.Add(p3);
#endregion
}
public override void Start()
{
p1 = new PhysicsActor();
//PhysicsActors have all the same attributes as regular ones...
p1.Size = Vector2.One;
p1.Color = new Color(1.0f, 0.0f, 1.0f, 1.0f);
//...but with a little bit of magic pixie dust
p1.Density = 0.8f; //density (0.0f will make it an immovable object)
p1.Friction = 0.5f;
p1.Restitution = 0.7f;
p2 = new PhysicsActor();
p2.Position = new Vector2(0.0f, -11.0f);
p2.Size = new Vector2(30.0f, 5.0f);
p2.Color = new Color(0.0f, 1.0f, 0.0f, 1.0f);
p2.Density = 0.0f;
p2.Friction = 0.1f;
//NOTE: After you call InitPhysics (or the world calls it automatically), you
// can't directly set an Actor's position, or rotation -- you've turned those
// over to the physics engine. You can't change the size, either, since that
// would mess up the simulation.
World.Instance.Add(p1);
World.Instance.Add(p2);
//Demo housekeeping below this point.
#region Demo Housekeeping
t1 = new TextActor("Console", "These Actors use physics. Press [B].");
t1.Position = new Vector2(0.0f, 3.5f);
t1.TextAlignment = TextActor.Alignment.Center;
World.Instance.Add(t1);
TextActor fileLoc = new TextActor("ConsoleSmall", "DemoScreenPhysicsActor.cs");
fileLoc.Position = World.Instance.Camera.ScreenToWorld(5, 755);
fileLoc.Color = new Color(.3f, .3f, .3f);
World.Instance.Add(fileLoc);
_objects.Add(fileLoc);
_objects.Add(t1);
_objects.Add(p1);
_objects.Add(p2);
#endregion
}
public override void Start()
{
//Set up the PhysicsActors to collide
p1 = new PhysicsActor();
p1.Size = new Vector2(1.0f, 1.0f);
p1.Color = new Color(1.0f, 0.0f, 1.0f, 1.0f);
p1.Density = 0.8f;
p1.Friction = 0.5f;
p1.Restitution = 0.7f;
// Unlike in Angel 1.1 (which uses a global OnCollision handler) here, we
// register with the pieces we want to know about collisions from
p1.Collision += new CollisionHandler(OnCollision);
p2 = new PhysicsActor();
p2.Position = new Vector2(0.0f, -11.0f);
p2.Size = new Vector2(30.0f, 5.0f);
p2.Color = new Color(0.0f, 1.0f, 0.0f);
p2.Density = 0.0f;
p2.Friction = 0.1f;
World.Instance.Add(p1);
World.Instance.Add(p2);
//Demo housekeeping below this point.
#region Demo housekeeping
t1 = new TextActor("Console", "This example looks similar, but is responding to collisions with sound.");
t1.Position = new Vector2(0.0f, 3.5f);
t1.TextAlignment = TextActor.Alignment.Center;
World.Instance.Add(t1);
TextActor fileLoc = new TextActor("ConsoleSmall", "DemoScreenCollisions.cs");
fileLoc.Position = World.Instance.Camera.ScreenToWorld(5, 755);
fileLoc.Color = new Color(.3f, .3f, .3f);
World.Instance.Add(fileLoc);
_objects.Add(fileLoc);
_objects.Add(t1);
_objects.Add(p1);
_objects.Add(p2);
#endregion
}
internal override void OnCollision(PhysicsActor otherActor, ref ContactPoint point)
{
if (otherActor is PhysicsEventActor)
{
AddCollision((PhysicsEventActor)otherActor);
}
base.OnCollision(otherActor, ref point);
}
private void Setup()
{
//Create a new physics actor, but don't initialize its physics just yet. We'll start
// physics in response to some messages later on.
p1 = new PhysicsActor();
p1.Size = new Vector2(1.0f, 1.0f);
p1.Color = new Color(1.0f, 0.0f, 1.0f);
p1.Position = new Vector2(-8.0f, 12.6f);
p1.Rotation = 5.0f;
p1.AutoInitPhysics = false; // Don't initialize physics when the object is added to the world.
//Make a friend for him, and don't initialize its physics when it gets added to the world.
p2 = new PhysicsActor();
p2.Size = new Vector2(1.0f, 1.0f);
p2.Color = new Color(0.0f, 0.0f, 1.0f);
p2.Position = new Vector2(8.0f, 12.6f);
p2.AutoInitPhysics = false;
//Add them all to the world. When we add them they are assigned names, which are
// guaranteed to be unique. You can also assign your own name to any Actor with
// SetName(), which returns the unique name it was actually given. (Numbers will
// be appended if the name was already taken.)
//
//There's also a static function Actor::GetNamed() that you pass a string name
// and will return either the Actor with that name or NULL.
World.Instance.Add(p1);
World.Instance.Add(p2);
//This message is interesting -- all collision messages take the form "CollisionWith"
// plus the name of the actor colliding. Note that this means if you change the name
// of the actor, you need to change your subscriptions if you want to hear about
// collisions.
Switchboard.Instance["CollisionWith" + p1.Name] += new MessageHandler(ReceiveMessage);
Switchboard.Instance["CollisionWith" + p2.Name] += new MessageHandler(ReceiveMessage);
}
private void OnCollision(PhysicsActor actorA, PhysicsActor actorB, ref Box2D.ContactPoint point)
{
if(Math.Abs(p1.Body.LinearVelocity.Y) > 5.0f)
sound.Play();
}
internal virtual void OnCollision(PhysicsActor otherActor, ref ContactPoint point)
{
if (Collision != null)
Collision(this, otherActor, ref point);
}
