HeightAdjuster for Godot

HeightAdjuster.cs

using Godot;
using System;
using System.Collections.Generic;

public partial class HeightAdjuster : Node
{

	[Export] public CharacterBody2D Body;
	[Export] public int DefaultLayer = 1;
	[Export] public int HighLayer = 8;

	[Export] public TileMap TileMap;

	[Signal]
	public delegate void OnBridgeEventHandler();

	[Signal]
	public delegate void ExitBridgeEventHandler();

	private Dictionary<String, int> _layers;
	private TileSet _tileSet;
	private bool _onBridge;
	
	// Called when the node enters the scene tree for the first time.
	public override void _Ready()
	{
		_layers = new Dictionary<string, int>();
		for(int i = 0; i < TileMap.GetLayersCount(); i++)
		{
			// now we can reference TileMap by layer name.
			_layers[TileMap.GetLayerName(i)] = i;
		}

		_tileSet = TileMap.TileSet;
	}

	// Called every frame. 'delta' is the elapsed time since the previous frame.
	public override void _Process(double delta)
	{
		
		var tilemapPosition = TileMap.LocalToMap(Body.GlobalPosition);
		var tileData = TileMap.GetCellTileData(_layers["Bridge"], tilemapPosition);
		if (tileData == null && _onBridge)
		{
			// we're not on a bridge layer
			_onBridge = false;
			EmitSignal(SignalName.ExitBridge);
			return;
		}

		if (tileData == null) return;
		
		var enteringBridge = tileData.GetCustomData("entering_bridge").AsBool();
		var onBridge = tileData.GetCustomData("on_bridge").AsBool();
		if (enteringBridge && !_onBridge)
		{
			_onBridge = true;
			EmitSignal(SignalName.OnBridge);
		} else if (_onBridge && !onBridge)
		{
			_onBridge = false;
			EmitSignal(SignalName.ExitBridge);
		}
	}
}