completely rewritten with godot 4 beta

src/main.cs

@@ -1,19 +0,0 @@
-using Godot;
-using System;
-
-public class main : Node2D
-{
-
-    public override void _Ready()
-    {
-
-    }
-
-  public override void _Process(float delta)
-  {
-        if (Input.IsActionJustReleased("fullscreen"))
-        {
-            OS.WindowFullscreen = !OS.WindowFullscreen;
-        }
-  }
-}

src/player.cs

@@ -1,45 +1,26 @@
 using Godot;
 using System;
-
-public class player : KinematicBody2D
+public partial class player : CharacterBody2D
 {
-    [Export]
-    public int speed = 400;
+	[Export]
+	public int speed = 400;
+	// Called when the node enters the scene tree for the first time.
+	public override void _Ready()
+	{
 
-    public override void _PhysicsProcess(float delta)
-    {
+	}
+
+	// Called every frame. 'delta' is the elapsed time since the previous frame.
+	public override void _PhysicsProcess(double delta)
+	{
         MoveAndCollide(new Vector2
             (
-            Input.GetActionStrength("move_right") 
-            - Input.GetActionStrength("move_left"), 
-            Input.GetActionStrength("move_down") 
+            Input.GetActionStrength("move_right")
+            - Input.GetActionStrength("move_left"),
+            Input.GetActionStrength("move_down")
             - Input.GetActionStrength("move_up")
-            ).LimitLength(1) 
-            * speed * delta
+            ).LimitLength(1)
+            * speed * (float)delta
             );
     }
-
-    public override void _Process(float delta)
-    {
-        //debug the grid
-        int currentCellID = 1;
-        var tilemap = GetNode<TileMap>("/root/Main/World/Foreground");
-        Vector2 coordinates = tilemap.WorldToMap(Position);
-        if (Input.IsActionJustReleased("debug"))
-        { 
-        GD.Print("All Number 1 tiles: " + tilemap.GetUsedCellsById(1));
-        GD.Print("Player coordinate: " + coordinates);
-        }
-        if (Input.IsKeyPressed((int)KeyList.F1))
-        {
-            tilemap.SetCell((int)coordinates.x, (int)coordinates.y, -1);
-        }
-        if (Input.IsKeyPressed((int)KeyList.F2))
-        {
-            if(tilemap.GetCell((int)coordinates.x, (int)coordinates.y) == -1)
-            {
-            tilemap.SetCell((int)coordinates.x, (int)coordinates.y, currentCellID); //place offset coordinates += offset = build coordinates
-            }
-        }
-    }
 }

src/tilemap_foreground.cs

@@ -1,27 +0,0 @@
-using Godot;
-using System;
-using System.Linq;
-
-public class tilemap_foreground : TileMap
-{
-    public override void _Process(float delta)
-    {
-        ReplaceStaticTiles(1, "debug_tile_one");
-    }
-
-    public void ReplaceStaticTiles(int CellID, string sceneName)
-    {
-       Vector2[] allCells = GetUsedCellsById(CellID).OfType<Vector2>().ToArray(); 
-        for(int i = 0; i < allCells.Length; i++)
-        {
-            GD.Print(allCells[i]);
-            SetCell((int)allCells[i].x, (int)allCells[i].y, -1);
-            var scene = GD.Load<PackedScene>("res://scenes/interactable_tiles/" + sceneName + ".tscn");
-            var instance = scene.Instance();
-            AddChild(instance);
-            var node = GetNode<Node2D>(instance.GetPath());
-            node.Position = allCells[i] * CellSize; //node has to be Node2D and can't be centered
-            GD.Print(node);
-        }
-    }
-}