Movement refactor

scripts/components/Movement/VariableJumpAbility.cs

@@ -0,0 +1,68 @@
+using Godot;
+
+namespace Mr.BrickAdventures.scripts.components;
+
+[GlobalClass]
+public partial class VariableJumpAbility : MovementAbility
+{
+    [ExportGroup("Jump Design")]
+    [Export] public float JumpHeight { get; set; } = 100f;
+    [Export] public float JumpTimeToPeak { get; set; } = 0.5f;
+    [Export] public float JumpTimeToDescent { get; set; } = 0.4f;
+    
+    [ExportGroup("Jump Feel")]
+    // How much to reduce upward velocity when the jump button is released mid-air.
+    [Export(PropertyHint.Range, "0.0, 1.0, 0.05")] public float JumpCutMultiplier { get; set; } = 0.5f;
+    [Export(PropertyHint.Range, "0,10,1")] public int CoyoteFrames { get; set; } = 6;
+    
+    private float _jumpVelocity;
+    private bool _wasOnFloor = false;
+    private bool _hasJumpedInAir = false;
+    private Timer _coyoteTimer;
+    
+    public float AscendGravity { get; private set; }
+    public float DescendGravity { get; private set; }
+    
+    public override void Initialize(PlayerController controller)
+    {
+        base.Initialize(controller);
+        
+        _jumpVelocity = (2.0f * JumpHeight) / JumpTimeToPeak * -1.0f;
+        AscendGravity = (-2.0f * JumpHeight) / (JumpTimeToPeak * JumpTimeToPeak) * -1.0f;
+        DescendGravity = (-2.0f * JumpHeight) / (JumpTimeToDescent * JumpTimeToDescent) * -1.0f;
+
+        _coyoteTimer = new Timer { OneShot = true, WaitTime = CoyoteFrames / (float)Engine.GetPhysicsTicksPerSecond() };
+        AddChild(_coyoteTimer);
+    }
+
+    
+    public override Vector2 ProcessMovement(Vector2 velocity, double delta)
+    {
+        var isGrounded = _body.IsOnFloor();
+
+        if (!isGrounded && _wasOnFloor) _coyoteTimer.Start();
+        if (isGrounded) _hasJumpedInAir = false;
+
+        if (_input.JumpHeld && !_hasJumpedInAir)
+        {
+            if (isGrounded || !_coyoteTimer.IsStopped())
+            {
+                velocity.Y = _jumpVelocity;
+                _controller.EmitSignal(PlayerController.SignalName.JumpInitiated);
+                _coyoteTimer.Stop();
+                _hasJumpedInAir = true;
+            }
+        }
+        
+        if (_input.JumpReleased)
+        {
+            if (velocity.Y < 0.0f)
+            {
+                velocity.Y *= JumpCutMultiplier;
+            }
+        }
+
+        _wasOnFloor = isGrounded;
+        return velocity;
+    }
+}