AceField/Scripts/Player.cs

using AceField.Scripts.Effects;
using AceField.Scripts.Logic;
using Godot;

namespace AceField.Scripts;

public partial class Player : CharacterBody2D
{
    private int _currentPlayerId = 1;

    [Export] public float MaxSpeed = 400f;
    [Export] public float Acceleration = 500f;
    [Export] public float Deceleration = 500f;
    [Export] public float RotationSpeed = 5f;

    [Export] public int Reach = 5;

    [Export] public double Health = 100;
    [Export] public double MaxHealth = 100;
    [Export] public double ActionPoints = 20;
    [Export] public double MaxActionPoints = 20;

    [Export] public Camera2D PlayerCamera;
    [Export] public PlayerInput PlayerInput;

    [Export] public float PlayerDashAcceleration = 2f;

    [Export] public PackedScene BulletScene;

    [Export] public string PlayerName;

    [Export]
    public int PlayerId
    {
        get => _currentPlayerId;
        set
        {
            _currentPlayerId = value;
            PlayerInput.SetMultiplayerAuthority(value);
        }
    }

    public void SetPlayerId(int id)
    {
        PlayerId = id;
        PlayerInput.SetMultiplayerAuthority(id);
    }

    public override void _Ready()
    {
        Health = MaxHealth;
        ActionPoints = MaxActionPoints;

        if (PlayerId == Multiplayer.GetUniqueId())
            PlayerCamera.Enabled = true;

        PlayerName = $"Player#{PlayerId}"; // TODO Remove mock data
        GetNode<Label>("HUD/NameTag").Text = PlayerName;

        GetNode<ProgressBar>("HUD/HealthBar").Value = Health / MaxHealth * 100;
    }

    public override void _Process(double delta)
    {
        if (PlayerInput.IsShooting)
        {
            Rpc(nameof(Shoot));
            PlayerInput.IsShooting = false;
        }
    }

    public override void _PhysicsProcess(double delta)
    {
        var input = PlayerInput.MovementDirection;

        if (input != Vector2.Zero)
        {
            input = input.Normalized();
            Velocity = Velocity.MoveToward(input * MaxSpeed, Acceleration * (float)delta);

            var centre = GetNode<Node2D>("RotationCentre");
            var finalRotation = input.Angle() + Mathf.Pi / 2;
            centre.Rotation = Mathf.LerpAngle(centre.Rotation, finalRotation, RotationSpeed * (float)delta);
        }
        else
        {
            Velocity = Velocity.MoveToward(Vector2.Zero, Deceleration * (float)delta);
        }

        var dashCountdown = GetNode<Timer>("DashCountdown");
        if (PlayerInput.IsDashing && dashCountdown.IsStopped())
        {
            PlayerInput.IsDashing = false;
            Velocity *= PlayerDashAcceleration;
            dashCountdown.Start();
        }

        Position += Velocity * (float)delta;
        MoveAndSlide();
    }

    public void TakeDamage(double damage)
    {
        Rpc(nameof(GotDamage), damage);
    }

    [Rpc(MultiplayerApi.RpcMode.AnyPeer, CallLocal = true)]
    private void GotDamage(double damage)
    {
        var protection = GetNode<Timer>("ProtectionCountdown");

        if (protection.IsStopped())
        {
            Health -= damage;

            var tween = CreateTween();
            var bar = GetNode<ProgressBar>("HUD/HealthBar");
            tween.TweenProperty(bar, "value", Health / MaxHealth * 100, 0.3);
            
            protection.Start();
        }

        var shakableCamera = GetNode<CameraShake>("Camera2D");
        shakableCamera.AddTrauma(0.5f);
    }

    [Rpc(MultiplayerApi.RpcMode.AnyPeer, CallLocal = true)]
    private void Shoot()
    {
        var marker = GetNode<Marker2D>("RotationCentre/Muzzle");
        var projectile = BulletScene.Instantiate<Bullet>();
        projectile.Transform = marker.GlobalTransform;
        projectile.PlayerId = PlayerId;

        GetParent().AddChild(projectile);
    }
}