using System;
using System.Collections.Generic;
using System.Linq;
using CIGEnums;
using SUISSEngine;
using UnityEngine;

public class CIGAnimalManager : MonoBehaviour
{
	private void Start()
	{
		this.animalAllowedTiles = this.horsePrefabs[0].GetComponent<AttachedElementTypeList>();
		base.transform.position = this.grid.transform.position;
		this.InitialiseAnimals();
	}

	private void InitialiseAnimals()
	{
		List<CIGExpansions.ExpansionBlock> freeBlocks = this.GetFreeBlocks();
		if (freeBlocks.Count == 0)
		{
			UnityEngine.Debug.LogWarning("No free blocks for animals; no animals");
			return;
		}
		CIGExpansions.ExpansionBlock block = freeBlocks[UnityEngine.Random.Range(0, freeBlocks.Count)];
		List<GridElement> suitableElements = this.GetSuitableElements(block);
		List<Boid> list = new List<Boid>();
		for (int i = 0; i < this.animalCount; i++)
		{
			CIGMovingUnit cigmovingUnit = this.CreateHorseAt(new GridPoint(suitableElements[UnityEngine.Random.Range(0, suitableElements.Count)].Index));
			cigmovingUnit.SetTargetLocation(new GridPoint(suitableElements[UnityEngine.Random.Range(0, suitableElements.Count)].Index));
			list.Add(cigmovingUnit.GetComponent<Boid>());
		}
		foreach (Boid boid in list)
		{
			boid.SetHerd(list);
		}
	}

	private CIGMovingUnit CreateHorseAt(GridPoint place)
	{
		GameObject gameObject = UnityEngine.Object.Instantiate<GameObject>(this.horsePrefabs[UnityEngine.Random.Range(0, this.horsePrefabs.Count<GameObject>())]);
		gameObject.transform.parent = base.transform;
		CIGMovingUnit component = gameObject.GetComponent<CIGMovingUnit>();
		component.SpawnAt(this.grid, place);
		return component;
	}

	private List<CIGExpansions.ExpansionBlock> GetFreeBlocks()
	{
		List<CIGExpansions.ExpansionBlock> list = new List<CIGExpansions.ExpansionBlock>();
		foreach (CIGExpansions.ExpansionBlock expansionBlock in this.expansions.AllBlocks)
		{
			if (expansionBlock != null)
			{
				if (this.animalAllowedTiles == null)
				{
					UnityEngine.Debug.LogError("Animal prefab has no attached element type list, to get the allowed tiles to walk on");
				}
				else if (!expansionBlock.Unlocked && this.GetSuitableElements(expansionBlock).Count > expansionBlock.AvailableElements / 2)
				{
					list.Add(expansionBlock);
				}
			}
		}
		return list;
	}

	private List<GridElement> GetSuitableElements(CIGExpansions.ExpansionBlock block)
	{
		List<GridElement> list = new List<GridElement>();
		for (int i = block.Origin.u; i < block.Origin.u + block.Size.u; i++)
		{
			for (int j = block.Origin.v; j < block.Origin.v + block.Size.v; j++)
			{
				GridElement gridElement = this.grid[i, j];
				foreach (SurfaceType surfaceType in this.animalAllowedTiles.elementTypes)
				{
					if (gridElement.Type == (int)surfaceType)
					{
						list.Add(gridElement);
					}
				}
			}
		}
		return list;
	}

	[SerializeField]
	private IsometricGrid grid;

	[SerializeField]
	private CIGExpansions expansions;

	[SerializeField]
	private GameObject[] horsePrefabs;

	public int animalCount = 10;

	private AttachedElementTypeList animalAllowedTiles;
}