homing projectiles

forge/abilities/ForgeSpawnProjectileBehavior.cs

@@ -12,14 +12,24 @@ public class SpawnProjectileBehavior(PackedScene projectileScene) : IAbilityBeha
 {
     public void OnStarted(AbilityBehaviorContext context)
     {
-        if (context.Target is not Node3D target || context.Source is not Node3D source) return;
+        if (context.Target is not Node3D target || context.Source is not Node3D source)
+        {
+            context.InstanceHandle.End();
+            return;
+        }
         
         var sourceLocation = source.GlobalPosition;
         
-        if (projectileScene.Instantiate() is not Projectile projectile) return;
+        if (projectileScene.Instantiate() is not Projectile projectile)
+        {
+            context.InstanceHandle.End();
+            return;
+        }
+        
         source.GetTree().GetCurrentScene().AddChild(projectile);
 
-        projectile.GlobalPosition = source is ITargetable targetable ? targetable.GetTargetGlobalPosition() : sourceLocation;
+        var startPos = source is ITargetable targetable ? targetable.GetTargetGlobalPosition() : sourceLocation;
+        projectile.GlobalPosition = startPos + Vector3.Up;
         projectile.Target = target;
         if (projectile is ISpawnable spawnable) spawnable.Init();
         

scenes/enemies/projectile_enemy/projectile_enemy.tscn

@@ -160,7 +160,7 @@ InitialStack = SubResource("Resource_hgi6f")
 Cues = []
 metadata/_custom_type_script = "uid://b83hf13nj37k3"
 
-[sub_resource type="ViewportTexture" id="ViewportTexture_f6vvi"]
+[sub_resource type="ViewportTexture" id="ViewportTexture_xabdf"]
 viewport_path = NodePath("SubViewport")
 
 [sub_resource type="Resource" id="Resource_6d4gl"]
@@ -240,7 +240,7 @@ metadata/_custom_type_script = "uid://dps0oef50noil"
 
 [node name="CHealthBar" parent="." unique_id=1278247727 instance=ExtResource("9_6ew2r")]
 transform = Transform3D(0.4, 0, 0, 0, 1, 0, 0, 0, 1, 0, 2.2, 0)
-texture = SubResource("ViewportTexture_f6vvi")
+texture = SubResource("ViewportTexture_xabdf")
 
 [node name="CMovement" parent="." unique_id=1080640834 node_paths=PackedStringArray("WallInFrontRayCast") instance=ExtResource("10_d3cra")]
 RMovement = SubResource("Resource_6d4gl")

scenes/player_controller/scripts/PlayerController.cs

@@ -36,7 +36,7 @@ public record struct EmpoweredActionPayload;
 
 
 [GlobalClass, Icon("res://assets/ui/IconGodotNode/node_3D/icon_character.png"), Meta(typeof(IAutoNode))]
-public partial class PlayerController : CharacterBody3D, IForgeEntity, ICueHandler, IDisposable
+public partial class PlayerController : CharacterBody3D, IForgeEntity, ICueHandler, IDisposable, ITargetable
 {
 	public override void _Notification(int what) => this.Notify(what);
 	
@@ -2708,4 +2708,9 @@ public partial class PlayerController : CharacterBody3D, IForgeEntity, ICueHandl
 	public void OnUpdate(IForgeEntity? target, CueParameters? parameters)
 	{
 	}
+
+	public Vector3 GetTargetGlobalPosition()
+	{
+		return HeadSystem.GlobalPosition;
+	}
 }

scenes/projectile/Projectile.cs

@@ -68,18 +68,44 @@ public partial class Projectile : RigidBody3D, IForgeEntity, ITargetable, IKilla
     [Node("ForgeEntityNode")] public required ForgeEntityNode ForgeEntity { get; set;}
 
     [Export] public float Damage = 10f;
+    [Export] public float Speed = 10f;
+    [Export] public float HomingFactor = 0.2f;
 
-    public Node3D Target { get; set; }
+    public Node3D? Target { get; set; }
 
     public void Init()
     {
-        ApplyCentralImpulse(Vector3.Up * 10);
+        ApplyCentralImpulse(ComputeImpulseToTarget());
+    }
+
+    public Vector3 ComputeImpulseToTarget()
+    {
+        if (Target == null) return Vector3.Zero;
+        return Vector3.Up * Speed;
+        
+        var targetDir = GlobalPosition.DirectionTo(Target.GlobalPosition);
+        var hDir = new Vector3(targetDir.X, 0, targetDir.Z).Normalized();
+        var throwDir = (hDir + 3*Vector3.Up).Normalized();
+        var distanceTo = GlobalPosition.DistanceTo(Target.GlobalPosition);
+        
+        return throwDir * distanceTo*0.8f;
     }
 
     public override void _IntegrateForces(PhysicsDirectBodyState3D state)
     {
-        var direction = GlobalPosition.DirectionTo(Target.GlobalPosition);
+        if (Target == null) return;
-        state.LinearVelocity += direction / 10.0f;
+        var targetPos = Target is ITargetable targetable ? targetable.GetTargetGlobalPosition() : Target.GlobalPosition;
+        var targetVel = state.LinearVelocity + GlobalPosition.DirectionTo(targetPos) * HomingFactor;
+        if (targetVel.Length() > Speed) targetVel = targetVel.Normalized() * Speed;
+        state.LinearVelocity = targetVel;
+        // var targetDir = GlobalPosition.DirectionTo(targetPos);
+        // var hDir = new Vector3(targetDir.X, 0, targetDir.Z).Normalized();
+        // var currentVelocityHDir = new Vector3(state.LinearVelocity.X, 0, state.LinearVelocity.Z);
+        // var finalHDir = hDir*HomingFactor + currentVelocityHDir;
+        // var combinedVelocity = new Vector3(finalHDir.X, state.LinearVelocity.Y, finalHDir.Z);
+        // if (combinedVelocity.Length() > Speed) combinedVelocity = combinedVelocity.Normalized() * Speed;
+        // state.LinearVelocity = combinedVelocity;
+        // state.LinearVelocity += targetDir/5.0f;
     }
 
     public void OnResolved()

scenes/projectile/Projectile.tscn

@@ -55,7 +55,7 @@ script = ExtResource("12_6slh1")
 
 [sub_resource type="Resource" id="Resource_uh7hr"]
 script = ExtResource("12_6slh1")
-BaseValue = 10.0
+BaseValue = 1.0
 metadata/_custom_type_script = "uid://cn3b4ya15fg7e"
 
 [sub_resource type="Resource" id="Resource_ckp55"]
@@ -201,6 +201,8 @@ continuous_cd = true
 contact_monitor = true
 max_contacts_reported = 1
 script = ExtResource("1_bwggc")
+Speed = 20.0
+HomingFactor = 0.8
 
 [node name="ForgeEntityNode" type="Node3D" parent="." unique_id=1961065393]
 script = ExtResource("3_0m0gv")