From 703e130a7840a90ad0a3aeb9f6cff6c25b42e8f3 Mon Sep 17 00:00:00 2001
From: parsons <marc@parsons.cc>
Date: Tue, 18 Aug 2026 15:22:25 +0100
Subject: [PATCH] Slide the geezers boat race about

---
 Player.cs | 85 ++++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 69 insertions(+), 16 deletions(-)

diff --git a/Player.cs b/Player.cs
index 25f559d..63cb867 100644
--- a/Player.cs
+++ b/Player.cs
@@ -2,30 +2,83 @@ using Godot;
 
 public partial class Player : Sprite2D
 {
-    // Speed in pixels per second
-    private float _speed = 400.0f;
+    // 1. Logical Grid Coordinates (0,0 is top left)
+    private int _gridX = 0;
+    private int _gridY = 0;
+
+    // The default Godot icon is 128x128 pixels
+    private int _tileSize = 128;
+
+    // State machine flag to prevent input while sliding
+    private bool _isMoving = false;
 
     public override void _Process(double delta)
     {
-        Vector2 velocity = Vector2.Zero;
+        // If we are currently animating a slide, ignore the keyboard
+        if (_isMoving) return;
 
-        if (Input.IsActionPressed("ui_right"))
+        Vector2 direction = Vector2.Zero;
+
+        // Trigger only once per key press
+        if (Input.IsActionJustPressed("ui_right")) direction.X = 1;
+        else if (Input.IsActionJustPressed("ui_left")) direction.X = -1;
+        else if (Input.IsActionJustPressed("ui_down")) direction.Y = 1;
+        else if (Input.IsActionJustPressed("ui_up")) direction.Y = -1;
+
+        if (direction != Vector2.Zero)
         {
-            velocity.X += 1.0f;
+            SlideTile((int)direction.X, (int)direction.Y);
         }
-        if (Input.IsActionPressed("ui_left"))
+    }
+
+    private void SlideTile(int dirX, int dirY)
+    {
+        int testGridX = _gridX;
+        int testGridY = _gridY;
+
+        // 1. The "Slide on Ice" Loop
+        while (true)
         {
-            velocity.X -= 1.0f;
-        }
-        if (Input.IsActionPressed("ui_down"))
-        {
-            velocity.Y += 1.0f;
-        }
-        if (Input.IsActionPressed("ui_up"))
-        {
-            velocity.Y -= 1.0f;
+            int nextGridX = testGridX + dirX;
+            int nextGridY = testGridY + dirY;
+
+            // Check if the next step is outside the 5x4 boundary
+            if (nextGridX < 0 || nextGridX >= 5 || nextGridY < 0 || nextGridY >= 4)
+            {
+                break; // Stop looking, we hit a wall!
+            }
+
+            // TODO: In the future, we will also check: 
+            // if (_gridArray[nextGridX, nextGridY] != null) { break; }
+
+            // If the space is valid, update our test coordinates and loop again
+            testGridX = nextGridX;
+            testGridY = nextGridY;
         }
 
-        Position += velocity * _speed * (float)delta;
+        // 2. Did we actually move?
+        if (testGridX == _gridX && testGridY == _gridY)
+        {
+            return; // We were already against a wall, do nothing
+        }
+
+        // 3. Update our logical position to the final destination
+        _gridX = testGridX;
+        _gridY = testGridY;
+
+        Vector2 targetPixelPos = new Vector2(_gridX * _tileSize, _gridY * _tileSize);
+
+        // 4. Calculate animation time based on distance traveled
+        // So moving 4 tiles doesn't look 4x faster than moving 1 tile
+        float distance = Mathf.Abs(dirX != 0 ? _gridX - testGridX : _gridY - testGridY) * _tileSize;
+        // Use a base speed (e.g., 600 pixels per second)
+        float tweenDuration = distance / 600.0f;
+
+        // 5. Animate the slide
+        _isMoving = true;
+        Tween tween = CreateTween();
+
+        tween.TweenProperty(this, "position", targetPixelPos, tweenDuration);
+        tween.Finished += () => _isMoving = false;
     }
 }
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