SettingsForCharacterPreview.cs

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using Microsoft.Xna.Framework;
 
namespace Terraria.DataStructures;
 
public class SettingsForCharacterPreview
{
    public delegate void CustomAnimationCode(Projectile proj, bool walking);
 
    public struct SelectionBasedSettings
    {
        public int StartFrame;
 
        public int FrameCount;
 
        public int DelayPerFrame;
 
        public bool BounceLoop;
 
        public void ApplyTo(Projectile proj)
        {
            if (FrameCount != 0)
            {
                if (proj.frame < StartFrame)
                {
                    proj.frame = StartFrame;
                }
                int num = proj.frame - StartFrame;
                int num2 = FrameCount * DelayPerFrame;
                int num3 = num2;
                if (BounceLoop)
                {
                    num3 = num2 * 2 - DelayPerFrame * 2;
                }
                if (++proj.frameCounter >= num3)
                {
                    proj.frameCounter = 0;
                }
                num = proj.frameCounter / DelayPerFrame;
                if (BounceLoop && num >= FrameCount)
                {
                    num = FrameCount * 2 - num - 2;
                }
                proj.frame = StartFrame + num;
            }
        }
    }
 
    public Vector2 Offset;
 
    public SelectionBasedSettings Selected;
 
    public SelectionBasedSettings NotSelected;
 
    public int SpriteDirection = 1;
 
    public CustomAnimationCode CustomAnimation;
 
    public void ApplyTo(Projectile proj, bool walking)
    {
        proj.position += Offset;
        proj.spriteDirection = SpriteDirection;
        proj.direction = SpriteDirection;
        if (walking)
        {
            Selected.ApplyTo(proj);
        }
        else
        {
            NotSelected.ApplyTo(proj);
        }
        if (CustomAnimation != null)
        {
            CustomAnimation(proj, walking);
        }
    }
 
    public SettingsForCharacterPreview WhenSelected(int? startFrame = null, int? frameCount = null, int? delayPerFrame = null, bool? bounceLoop = null)
    {
        Modify(ref Selected, startFrame, frameCount, delayPerFrame, bounceLoop);
        return this;
    }
 
    public SettingsForCharacterPreview WhenNotSelected(int? startFrame = null, int? frameCount = null, int? delayPerFrame = null, bool? bounceLoop = null)
    {
        Modify(ref NotSelected, startFrame, frameCount, delayPerFrame, bounceLoop);
        return this;
    }
 
    private static void Modify(ref SelectionBasedSettings target, int? startFrame, int? frameCount, int? delayPerFrame, bool? bounceLoop)
    {
        if (frameCount.HasValue && frameCount.Value < 1)
        {
            frameCount = 1;
        }
        target.StartFrame = (startFrame.HasValue ? startFrame.Value : target.StartFrame);
        target.FrameCount = (frameCount.HasValue ? frameCount.Value : target.FrameCount);
        target.DelayPerFrame = (delayPerFrame.HasValue ? delayPerFrame.Value : target.DelayPerFrame);
        target.BounceLoop = (bounceLoop.HasValue ? bounceLoop.Value : target.BounceLoop);
    }
 
    public SettingsForCharacterPreview WithOffset(Vector2 offset)
    {
        Offset = offset;
        return this;
    }
 
    public SettingsForCharacterPreview WithOffset(float x, float y)
    {
        Offset = new Vector2(x, y);
        return this;
    }
 
    public SettingsForCharacterPreview WithSpriteDirection(int spriteDirection)
    {
        SpriteDirection = spriteDirection;
        return this;
    }
 
    public SettingsForCharacterPreview WithCode(CustomAnimationCode customAnimation)
    {
        CustomAnimation = customAnimation;
        return this;
    }
}