using System.Collections;
using System.Collections.Generic;
using UnityEngine;


public class Main : MonoBehaviour
{
	// ----------------------------------------------------------------------------------------------------------------
	#region properties

	[SerializeField] public float tileSize = 32f;
	[SerializeField] public float offset;
	[SerializeField] public float ppu = 100f;

	[Space]
	[SerializeField] public GameMapsAsset mapsAsset;
	[SerializeField] public GameObject[] towerFab;
	[SerializeField] public GameObject[] enemyTowerFab;
	[SerializeField] public GameObject[] enemyFabs;
	public GameObject radiusBox;

	[Space]
	public float dragSpeed = 2.0f; // 拖动速度
	[HideInInspector] public Vector3 dragOrigin; // 拖动起始点

	[HideInInspector] public Transform TowerContainer;
	[HideInInspector] public Transform EnemyTowerContainer;
	[HideInInspector] public Transform EnemyContainer;
	[HideInInspector] public Transform BoxContainer;

	//import
	public ButtonTest buttonTest;

	#endregion
	// ----------------------------------------------------------------------------------------------------------------
	#region system

	private void Start()
	{
		LoadMap(0);
	}

    private void Update()
    {
		if (Input.GetKeyDown(KeyCode.R))
        {
			LoadMap(0);
        }

        if (Input.GetKeyDown(KeyCode.Space))
        {
			Camera.main.transform.localPosition = Vector3.zero;
        }

		if (Input.GetMouseButtonDown(2))
		{
			dragOrigin = Input.mousePosition;
			return;
		}

		if (Input.GetMouseButton(2))
		{
			Vector3 offset = Camera.main.ScreenToViewportPoint(dragOrigin - Input.mousePosition);
			Vector3 move = dragSpeed * offset.x * Vector3.right;

			Camera.main.transform.Translate(move, Space.World);


			dragOrigin = Input.mousePosition;
		}
	}

	// an example of how map data could be loaded
	private void LoadMap(int mapIdx)
	{
		GameMap map = mapsAsset.maps[mapIdx];

		float sz = tileSize / ppu;
		float offsX = -((map.width / 2f * sz) - (sz / 2f));
		float offsY = -offset;

        // create containers for the various map objects
        if (!TowerContainer)
        {
			TowerContainer = new GameObject("Tower").transform;
			EnemyTowerContainer = new GameObject("EnemyTower").transform;
			EnemyContainer = new GameObject("Enemy").transform;
			BoxContainer = new GameObject("Box").transform;

		}
        else
        {
			for (int i= 0; i < TowerContainer.transform.childCount; i++)
            {
				Destroy(TowerContainer.transform.GetChild(i).gameObject);
            }
			for (int i = 0; i < EnemyTowerContainer.transform.childCount; i++)
			{
				Destroy(EnemyTowerContainer.transform.GetChild(i).gameObject);
			}
			for (int i = 0; i < EnemyContainer.transform.childCount; i++)
			{
				Destroy(EnemyContainer.transform.GetChild(i).gameObject);
			}
			for (int i = 0; i < BoxContainer.transform.childCount; i++)
			{
				Destroy(BoxContainer.transform.GetChild(i).gameObject);
			}
		}

		// place tiles and objects. GameMap supports laters but if you choose not to use them then you only need to read from map.grid[]
		// if you do use layers then you should also read data from map.layers[].grid[] while also still using map.grid[] as layer-0
		// to make it easier to read from these two sources of data you can simply use map.LayerCount and map.GetLayerData

		for (int i = 0; i < map.LayerCount; i++)
		{
			int[] grid = map.GetlayerData(i);
			int idx = 0;
			for (int y = 0; y < map.height; y++)
			{
				for (int x = 0; x < map.width; x++)
				{
					GameMapTile t = mapsAsset.tileAsset.GetTile(grid[idx++]);
					if (t == null) continue;
					SpriteRenderer ren = null;
					switch (t.type)
					{
						case GameMapTile.Type.Tower:
							ren = Instantiate(towerFab[t.opt1]).GetComponent<SpriteRenderer>();
							ren.transform.SetParent(TowerContainer, false);
							break;
						case GameMapTile.Type.EnemyTower:
							ren = Instantiate(enemyTowerFab[t.opt1]).GetComponent<SpriteRenderer>();
							ren.transform.SetParent(EnemyTowerContainer, false);
							break;
						case GameMapTile.Type.Enemy:
							ren = Instantiate(enemyFabs[t.opt1]).GetComponent<SpriteRenderer>();
							ren.transform.SetParent(EnemyContainer, false);
							break;
					}
					if (ren == null) continue;
					ren.color = t.color;
					ren.transform.localScale = new Vector3(tileSize / ren.sprite.rect.width, tileSize / ren.sprite.rect.height, 1f);
					ren.transform.localPosition = new Vector3(x * sz + offsX, y * sz + offsY, 0f);
					Transform box = Instantiate(radiusBox).transform;
					box.SetParent(BoxContainer, false);
					box.GetComponent<SpriteRenderer>().color = t.color;
					box.localScale = new Vector3(t.radius.x * 0.4f, t.radius.y*0.4f, 1);
					box.position = ren.transform.position;
				}
			}
		}
	}

	#endregion
	// ----------------------------------------------------------------------------------------------------------------
}