85 lines
3.2 KiB
C#
85 lines
3.2 KiB
C#
using Syntriax.Engine.Core;
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using Syntriax.Engine.Network;
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using Syntriax.Engine.Physics2D;
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using Syntriax.Engine.Systems.Tween;
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namespace Pong.Behaviours;
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public class BallBehaviour : Behaviour2D, IPhysicsUpdate, INetworkEntity,
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IPacketListenerClient<BallBehaviour.BallUpdatePacket>
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{
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public float Speed { get; set; } = 500f;
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public float SpeedUpMultiplier { get; set; } = .0125f;
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public IRigidBody2D RigidBody { get; private set; } = null!;
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private IPhysicsEngine2D physicsEngine2D = null!;
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private ITweenManager tweenManager = null!;
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private INetworkCommunicatorServer? networkServer = null;
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protected override void OnFirstActiveFrame()
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{
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BehaviourController.GetRequiredBehaviour<ICollider2D>().OnCollisionDetected += OnCollisionDetected;
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physicsEngine2D = Universe.GetRequiredUniverseObject<IPhysicsEngine2D>();
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tweenManager = Universe.GetRequiredUniverseObject<ITweenManager>();
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RigidBody = BehaviourController.GetRequiredBehaviour<IRigidBody2D>();
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networkServer = Universe.Find<INetworkCommunicatorServer>();
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}
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public void LaunchBall(Vector2D launchDirection)
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{
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ResetBall();
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RigidBody.Velocity = launchDirection * Speed;
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networkServer?.SendToClient("*", new BallUpdatePacket(this));
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}
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public void ResetBall()
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{
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Transform.Position = Vector2D.Zero;
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RigidBody.Velocity = Vector2D.Zero;
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}
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public void PhysicsUpdate(float delta)
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{
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if (RigidBody.Velocity.MagnitudeSquared <= 0.01f)
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return;
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Vector2D direction = RigidBody.Velocity.Normalized;
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RigidBody.Velocity += direction * delta * SpeedUpMultiplier;
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}
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private void OnCollisionDetected(ICollider2D collider2D, CollisionDetectionInformation information)
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{
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if (Math.Abs(information.Normal.Dot(Vector2D.Right)) > .25)
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RigidBody.Velocity = information.Detected.Transform.Position.FromTo(information.Detector.Transform.Position).Normalized * RigidBody.Velocity.Magnitude;
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else
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RigidBody.Velocity = RigidBody.Velocity.Reflect(information.Normal);
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networkServer?.SendToClient("*", new BallUpdatePacket(this));
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}
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public BallBehaviour() { }
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public BallBehaviour(float speed) => Speed = speed;
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void IPacketListenerClient<BallUpdatePacket>.OnClientPacketArrived(BallUpdatePacket packet)
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{
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Transform.TweenPositionAdditive(tweenManager, .25f, Transform.Position.FromTo(packet.Position));
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RigidBody.Velocity = packet.Velocity;
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physicsEngine2D.StepIndividual(RigidBody, new System.DateTime(System.DateTime.UtcNow.Ticks - packet.Timestamp).Second);
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}
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private class BallUpdatePacket : INetworkPacket
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{
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public Vector2D Position { get; set; } = Vector2D.Zero;
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public Vector2D Velocity { get; set; } = Vector2D.Zero;
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public long Timestamp { get; set; } = 0;
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public BallUpdatePacket() { }
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public BallUpdatePacket(BallBehaviour ballBehaviour)
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{
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Position = ballBehaviour.Transform.Position;
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Velocity = ballBehaviour.RigidBody.Velocity;
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Timestamp = System.DateTime.UtcNow.Ticks;
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}
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}
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}
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