using UnityEngine;

namespace EnergyBarToolkit
{
	[RequireComponent(typeof(EnergyBar))]
	[ExecuteInEditMode]
	public class EnergyBarSequenceRenderer : EnergyBarOnGUIBase
	{
		public enum Method
		{
			Grid = 0,
			Sequence = 1
		}

		public Vector2 position = default(Vector2);

		public bool positionNormalized;

		public Vector2 size;

		public Color color = Color.white;

		public Method method;

		public Texture2D gridTexture;

		public int gridWidth = 2;

		public int gridHeight = 2;

		public bool frameCountManual;

		public int frameCount = 4;

		public Texture2D[] sequence;

		[SerializeField]
		private bool sizeNormalized;

		[SerializeField]
		private bool sizeCalculate = true;

		private Vector2 PositionPixels
		{
			get
			{
				if (positionNormalized)
				{
					return new Vector2(position.x * (float)Screen.width, position.y * (float)Screen.height);
				}
				return position;
			}
		}

		public override Vector2 SizePixels
		{
			get
			{
				return GetSizePixels(size);
			}
			set
			{
				SetSizePixels(ref size, value);
			}
		}

		public override Vector2 TextureSizePixels
		{
			get
			{
				switch (method)
				{
				case Method.Grid:
					if (gridTexture == null)
					{
						return Vector2.one;
					}
					return new Vector2(gridTexture.width / gridWidth, gridTexture.height / gridHeight);
				case Method.Sequence:
				{
					if (sequence == null || sequence.Length == 0 || sequence[0] == null)
					{
						return Vector2.one;
					}
					Texture2D texture2D = sequence[0];
					return new Vector2(texture2D.width, texture2D.height);
				}
				default:
					MadDebug.Assert(false, "unknown method: " + method);
					return Vector2.one;
				}
			}
		}

		public override Rect DrawAreaRect
		{
			get
			{
				Vector2 vector = Round(SizePixels);
				Vector2 vector2 = RealPosition(Round(PositionPixels), SizePixels);
				return new Rect(vector2.x, vector2.y, vector.x, vector.y);
			}
		}

		private new void Start()
		{
			base.Start();
			if (version == 169)
			{
				Upgrade_169_171();
			}
		}

		private void Upgrade_169_171()
		{
			if (sizeNormalized)
			{
				resizeMode = ResizeMode.Stretch;
			}
			else if (!sizeCalculate)
			{
				resizeMode = ResizeMode.Fixed;
			}
			version = 171;
		}

		protected override void Update()
		{
			base.Update();
			FixValues();
			if (!frameCountManual)
			{
				frameCount = gridWidth * gridHeight;
			}
		}

		private new void OnGUI()
		{
			base.OnGUI();
			if (RepaintPhase() && IsVisible() && IsValid())
			{
				Rect texCoords;
				Texture2D texture = GetTexture(out texCoords);
				if (texture != null)
				{
					GUIDrawBackground();
					Vector2 bounds = Round(SizePixels);
					Vector2 vector = RealPosition(Round(PositionPixels), bounds);
					DrawTexture(new Rect(vector.x, vector.y, bounds.x, bounds.y), texture, texCoords, color);
					GUIDrawForeground();
				}
				GUIDrawLabel();
			}
		}

		private void FixValues()
		{
			gridWidth = Mathf.Max(1, gridWidth);
			gridHeight = Mathf.Max(1, gridHeight);
			frameCount = Mathf.Max(1, frameCount);
		}

		public bool IsValid()
		{
			if (base.energyBar == null)
			{
				return false;
			}
			switch (method)
			{
			case Method.Grid:
				return gridWidth > 0 && gridHeight > 0 && gridTexture != null;
			case Method.Sequence:
				return sequence.Length > 0 && sequence[0] != null;
			default:
				MadDebug.Assert(false, "unknown method: " + method);
				return false;
			}
		}

		public Texture2D GetTexture(out Rect texCoords)
		{
			switch (method)
			{
			case Method.Grid:
				return GetTextureGrid(out texCoords);
			case Method.Sequence:
				return GetTextureSequence(out texCoords);
			default:
				MadDebug.Assert(false, "unknown method: " + method);
				texCoords = default(Rect);
				return null;
			}
		}

		private Texture2D GetTextureGrid(out Rect texCoords)
		{
			int num = frameCount;
			int num2 = Index(num);
			float y = (float)(gridHeight - 1 - num2 / gridWidth) / (float)gridHeight;
			float x = (float)(num2 % gridWidth) / (float)gridWidth;
			float width = 1f / (float)gridWidth;
			float height = 1f / (float)gridHeight;
			texCoords = new Rect(x, y, width, height);
			return gridTexture;
		}

		private Texture2D GetTextureSequence(out Rect texCoords)
		{
			int num = sequence.Length;
			int num2 = Index(num);
			texCoords = new Rect(0f, 0f, 1f, 1f);
			return sequence[num2];
		}

		private int Index(int size)
		{
			float valueF = ValueF2;
			return (int)Mathf.Min(Mathf.Floor(valueF * (float)size), size - 1);
		}
	}
}