Rework enemy behavior (still in progress but shouldn't crash)

2025-10-20 19:24:50 -07:00
parent 20b659681a
commit 44fd8c82b0
135 changed files with 2165 additions and 2415 deletions
--- a/Zennysoft.Game.Ma/src/enemy/behaviors/PatrolBehavior.cs
+++ b/Zennysoft.Game.Ma/src/enemy/behaviors/PatrolBehavior.cs
@@ -0,0 +1,87 @@
+using Chickensoft.AutoInject;
+using Chickensoft.Introspection;
+using Godot;
+using Godot.Collections;
+using Zennysoft.Game.Abstractions.Entity;
+
+namespace Zennysoft.Game.Ma;
+
+[Meta(typeof(IAutoNode))]
+public partial class PatrolBehavior : Node3D, IBehavior
+{
+  public override void _Notification(int what) => this.Notify(what);
+
+  [Export] private double _patrolSpeed { get; set; } = 100f;
+
+  [Export] private double _thinkTime { get; set; } = 0.8f;
+
+  [Export] private float _patrolRange { get; set; } = 5f;
+
+  [Export] private float _patrolTime { get; set; } = 10f;
+
+  private Timer _patrolTimer { get; set; } = default!;
+  private NavigationAgent3D _navigationAgent;
+
+  private int _recursiveCounter = 0;
+
+  public Vector3 HomePosition { get; set; }
+
+  [Signal] public delegate void OnVelocityComputedEventHandler(Vector3 safeVelocity);
+
+  public void OnReady()
+  {
+    _patrolTimer = new Timer() { WaitTime = _patrolTime };
+    _patrolTimer.Timeout += PatrolTimer_Timeout;
+    AddChild(_patrolTimer);
+    SetPhysicsProcess(false);
+  }
+
+  public void Init(NavigationAgent3D navigationAgent)
+  {
+    _navigationAgent = navigationAgent;
+    _navigationAgent.WaypointReached += NavigationAgent_WaypointReached;
+    _navigationAgent.TargetPosition = HomePosition;
+  }
+
+  private async void NavigationAgent_WaypointReached(Dictionary details) => await ToSignal(GetTree().CreateTimer(_thinkTime), "timeout");
+
+  public void StartPatrol()
+  {
+    SetPhysicsProcess(true);
+    _patrolTimer?.Start();
+  }
+
+  public void StopPatrol()
+  {
+    SetPhysicsProcess(false);
+    _patrolTimer?.Stop();
+  }
+
+  public void OnPhysicsProcess(double delta)
+  {
+    var nextVelocity = _navigationAgent.GetNextPathPosition();
+    var parent = GetParent() as Node3D;
+    var velocity = parent.GlobalPosition.DirectionTo(nextVelocity) * (float)_patrolSpeed * (float)delta;
+    EmitSignal(SignalName.OnVelocityComputed, velocity);
+  }
+
+  public void SetPatrolTarget()
+  {
+    var rng = new RandomNumberGenerator();
+    rng.Randomize();
+    var randomPointX = rng.RandfRange(-_patrolRange, _patrolRange);
+    var randomPointZ = rng.RandfRange(-_patrolRange, _patrolRange);
+    _navigationAgent.TargetPosition = HomePosition + new Vector3(randomPointX, 0, randomPointZ);
+    if (!_navigationAgent.IsTargetReachable())
+    {
+      _recursiveCounter++;
+      if (_recursiveCounter <= 100)
+        SetPatrolTarget();
+      else
+        _navigationAgent.TargetPosition = HomePosition;
+    }
+    _recursiveCounter = 0;
+  }
+
+  private void PatrolTimer_Timeout() => SetPatrolTarget();
+}