WMITFModSystem.cs

using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Terraria;
using Terraria.UI;
using Terraria.UI.Chat;
using Terraria.ID;
using Terraria.ModLoader;


namespace WMITF
{
    class WMITFModSystem : ModSystem
    {

		static public string MouseText;
		static public bool SecondLine;
		//Setup for drawing in world tooltips
		public override void ModifyInterfaceLayers(List<GameInterfaceLayer> layers)
		{
			int index = layers.FindIndex(layer => layer.Name.Equals("Vanilla: Mouse Text"));
			if (index != -1)
			{
				//Thank you jopojelly! (taken from https://github.com/JavidPack/SummonersAssociation)
				layers.Insert(index, new LegacyGameInterfaceLayer("WMITF: Mouse Text", delegate
				{
					if (ModContent.GetInstance<Config>().DisplayWorldTooltips && !String.IsNullOrEmpty(MouseText))
					{
						string coloredString = String.Format("[c/{1}:[{0}][c/{1}:]]", MouseText, Colors.RarityBlue.Hex3());
						var text = ChatManager.ParseMessage(coloredString, Color.White).ToArray();
						//float x = Main.fontMouseText.MeasureString(MouseText).X;
						float x = ChatManager.GetStringSize(Terraria.GameContent.FontAssets.MouseText.Value, text, Vector2.One).X;
						var pos = Main.MouseScreen + new Vector2(16f, 16f);
						if (pos.Y > (float)(Main.screenHeight - 30))
							pos.Y = (float)(Main.screenHeight - 30);
						if (pos.X > (float)(Main.screenWidth - x))
							pos.X = (float)(Main.screenWidth - x);
						if (SecondLine)
							pos.Y += Terraria.GameContent.FontAssets.MouseText.Value.LineSpacing;
						ChatManager.DrawColorCodedStringWithShadow(Main.spriteBatch, Terraria.GameContent.FontAssets.MouseText.Value, text, pos, 0f, Vector2.Zero, Vector2.One, out int hoveredSnippet);
					}
					return true;
				}, InterfaceScaleType.UI));
			}
		}
	}
}