ShimmerHelper.cs

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using Microsoft.Xna.Framework;
 
namespace Terraria.GameContent;
 
public class ShimmerHelper
{
    public static Vector2? FindSpotWithoutShimmer(Entity entity, int startX, int startY, int expand, bool allowSolidTop)
    {
        Vector2 vector = new Vector2(-entity.width / 2, -entity.height);
        for (int i = 0; i < expand; i++)
        {
            int num = startX - i;
            int num2 = startY - expand;
            Vector2 vector2 = new Vector2(num * 16, num2 * 16) + vector;
            if (IsSpotShimmerFree(entity, vector2, allowSolidTop))
            {
                return vector2;
            }
            vector2 = new Vector2((startX + i) * 16, num2 * 16) + vector;
            if (IsSpotShimmerFree(entity, vector2, allowSolidTop))
            {
                return vector2;
            }
            int num3 = startX - i;
            num2 = startY + expand;
            vector2 = new Vector2(num3 * 16, num2 * 16) + vector;
            if (IsSpotShimmerFree(entity, vector2, allowSolidTop))
            {
                return vector2;
            }
            vector2 = new Vector2((startX + i) * 16, num2 * 16) + vector;
            if (IsSpotShimmerFree(entity, vector2, allowSolidTop))
            {
                return vector2;
            }
        }
        for (int j = 0; j < expand; j++)
        {
            int num4 = startX - expand;
            int num5 = startY - j;
            Vector2 vector3 = new Vector2(num4 * 16, num5 * 16) + vector;
            if (IsSpotShimmerFree(entity, vector3, allowSolidTop))
            {
                return vector3;
            }
            vector3 = new Vector2((startX + expand) * 16, num5 * 16) + vector;
            if (IsSpotShimmerFree(entity, vector3, allowSolidTop))
            {
                return vector3;
            }
            int num6 = startX - expand;
            num5 = startY + j;
            vector3 = new Vector2(num6 * 16, num5 * 16) + vector;
            if (IsSpotShimmerFree(entity, vector3, allowSolidTop))
            {
                return vector3;
            }
            vector3 = new Vector2((startX + expand) * 16, num5 * 16) + vector;
            if (IsSpotShimmerFree(entity, vector3, allowSolidTop))
            {
                return vector3;
            }
        }
        return null;
    }
    public static Vector2? FindSpotWithoutShimmer(Entity entity, int startX, int startY, int expand, bool allowSolidTop) {…}
 
    private static bool IsSpotShimmerFree(Entity entity, Vector2 landingPosition, bool allowSolidTop)
    {
        if (Collision.SolidCollision(landingPosition, entity.width, entity.height))
        {
            return false;
        }
        if (!Collision.SolidCollision(landingPosition + new Vector2(0f, entity.height), entity.width, 100, allowSolidTop))
        {
            return false;
        }
        if (Collision.WetCollision(landingPosition, entity.width, entity.height + 100) && Collision.shimmer)
        {
            return false;
        }
        return true;
    }
    private static bool IsSpotShimmerFree(Entity entity, Vector2 landingPosition, bool allowSolidTop) {…}
}
public class ShimmerHelper {…};