PotionOfReturnGateHelper.cs

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using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using ReLogic.Content;
using Terraria.DataStructures;
using Terraria.ID;
 
namespace Terraria.GameContent;
 
public struct PotionOfReturnGateHelper
{
    public enum GateType
    {
        EntryPoint,
        ExitPoint
    }
 
    private readonly Vector2 _position;
 
    private readonly float _opacity;
 
    private readonly int _frameNumber;
 
    private readonly GateType _gateType;
 
    public PotionOfReturnGateHelper(GateType gateType, Vector2 worldPosition, float opacity)
    {
        _gateType = gateType;
        worldPosition.Y -= 2f;
        _position = worldPosition;
        _opacity = opacity;
        int num = (int)(((float)Main.tileFrameCounter[491] + _position.X + _position.Y) % 40f) / 5;
        if (gateType == GateType.ExitPoint)
        {
            num = 7 - num;
        }
        _frameNumber = num;
    }
 
    public void Update()
    {
        Lighting.AddLight(_position, 0.4f, 0.2f, 0.9f);
        SpawnReturnPortalDust();
    }
 
    public void SpawnReturnPortalDust()
    {
        if (_gateType == GateType.EntryPoint)
        {
            if (Main.rand.Next(3) == 0)
            {
                if (Main.rand.Next(2) == 0)
                {
                    Vector2 vector = Vector2.UnitY.RotatedByRandom(6.2831854820251465);
                    vector *= new Vector2(0.5f, 1f);
                    Dust dust = Dust.NewDustDirect(_position - vector * 30f, 0, 0, Utils.SelectRandom<int>(Main.rand, 86, 88));
                    dust.noGravity = true;
                    dust.noLightEmittence = true;
                    dust.position = _position - vector.SafeNormalize(Vector2.Zero) * Main.rand.Next(10, 21);
                    dust.velocity = vector.RotatedBy(1.5707963705062866) * 2f;
                    dust.scale = 0.5f + Main.rand.NextFloat();
                    dust.fadeIn = 0.5f;
                    dust.customData = this;
                    dust.position += dust.velocity * 10f;
                    dust.velocity *= -1f;
                }
                else
                {
                    Vector2 vector2 = Vector2.UnitY.RotatedByRandom(6.2831854820251465);
                    vector2 *= new Vector2(0.5f, 1f);
                    Dust dust2 = Dust.NewDustDirect(_position - vector2 * 30f, 0, 0, 240);
                    dust2.noGravity = true;
                    dust2.noLight = true;
                    dust2.position = _position - vector2.SafeNormalize(Vector2.Zero) * Main.rand.Next(5, 10);
                    dust2.velocity = vector2.RotatedBy(-1.5707963705062866) * 3f;
                    dust2.scale = 0.5f + Main.rand.NextFloat();
                    dust2.fadeIn = 0.5f;
                    dust2.customData = this;
                    dust2.position += dust2.velocity * 10f;
                    dust2.velocity *= -1f;
                }
            }
        }
        else if (Main.rand.Next(3) == 0)
        {
            if (Main.rand.Next(2) == 0)
            {
                Vector2 vector3 = Vector2.UnitY.RotatedByRandom(6.2831854820251465);
                vector3 *= new Vector2(0.5f, 1f);
                Dust dust3 = Dust.NewDustDirect(_position - vector3 * 30f, 0, 0, Utils.SelectRandom<int>(Main.rand, 86, 88));
                dust3.noGravity = true;
                dust3.noLightEmittence = true;
                dust3.position = _position;
                dust3.velocity = vector3.RotatedBy(-0.7853981852531433) * 2f;
                dust3.scale = 0.5f + Main.rand.NextFloat();
                dust3.fadeIn = 0.5f;
                dust3.customData = this;
                dust3.position += vector3 * new Vector2(20f);
            }
            else
            {
                Vector2 vector4 = Vector2.UnitY.RotatedByRandom(6.2831854820251465);
                vector4 *= new Vector2(0.5f, 1f);
                Dust dust4 = Dust.NewDustDirect(_position - vector4 * 30f, 0, 0, Utils.SelectRandom<int>(Main.rand, 86, 88));
                dust4.noGravity = true;
                dust4.noLightEmittence = true;
                dust4.position = _position;
                dust4.velocity = vector4.RotatedBy(-0.7853981852531433) * 2f;
                dust4.scale = 0.5f + Main.rand.NextFloat();
                dust4.fadeIn = 0.5f;
                dust4.customData = this;
                dust4.position += vector4 * new Vector2(20f);
            }
        }
    }
 
    public void DrawToDrawData(List<DrawData> drawDataList, int selectionMode)
    {
        short num = (short)((_gateType == GateType.EntryPoint) ? 183 : 184);
        Asset<Texture2D> val = TextureAssets.Extra[num];
        Rectangle rectangle = val.Frame(1, 8, 0, _frameNumber);
        Color color = Lighting.GetColor(_position.ToTileCoordinates());
        color = Color.Lerp(color, Color.White, 0.5f);
        color *= _opacity;
        DrawData drawData = new DrawData(val.Value, _position - Main.screenPosition, rectangle, color, 0f, rectangle.Size() / 2f, 1f, SpriteEffects.None);
        drawDataList.Add(drawData);
        for (float num2 = 0f; num2 < 1f; num2 += 0.34f)
        {
            DrawData item = drawData;
            item.color = new Color(127, 50, 127, 0) * _opacity;
            item.scale *= 1.1f;
            float x = (Main.GlobalTimeWrappedHourly / 5f * ((float)Math.PI * 2f)).ToRotationVector2().X;
            item.color *= x * 0.1f + 0.3f;
            item.position += ((Main.GlobalTimeWrappedHourly / 5f + num2) * ((float)Math.PI * 2f)).ToRotationVector2() * (x * 1f + 2f);
            drawDataList.Add(item);
        }
        if (selectionMode != 0)
        {
            int num3 = (color.R + color.G + color.B) / 3;
            if (num3 > 10)
            {
                Color selectionGlowColor = Colors.GetSelectionGlowColor(selectionMode == 2, num3);
                Texture2D value = TextureAssets.Extra[242].Value;
                Rectangle value2 = value.Frame(1, 8, 0, _frameNumber);
                drawData = new DrawData(value, _position - Main.screenPosition, value2, selectionGlowColor, 0f, rectangle.Size() / 2f, 1f, SpriteEffects.None);
                drawDataList.Add(drawData);
            }
        }
    }
}