110 lines
2.8 KiB
C#
110 lines
2.8 KiB
C#
using System;
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using UnityEngine;
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using Random = UnityEngine.Random;
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public class HexGrid : MonoBehaviour
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{
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/// <summary>
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/// 格子宽度
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/// </summary>
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public int width = 6;
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/// <summary>
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/// 格子高度
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/// </summary>
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public int height = 6;
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/// <summary>
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/// 格子实例预制体（用于实际角色放入交互，也有可能会删掉改用判断位置的方式处理交互）
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/// </summary>
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public HexCell cellPrefab;
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/// <summary>
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/// 六边形渲染mesh
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/// </summary>
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HexMesh hexMesh;
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/// <summary>
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/// 格子存储
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/// </summary>
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HexCell[] cells;
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public Color defaultColor = Color.white;
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public Color touchedColor = Color.magenta;
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void Awake()
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{
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hexMesh = GetComponentInChildren<HexMesh>();
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cells = new HexCell[height * width];
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for (int z = 0, i = 0; z < height; z++)
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{
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for (int x = 0; x < width; x++)
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{
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CreateCell(x, z, i++);
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}
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}
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}
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private void Start()
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{
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// 渲染mesh
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hexMesh.Triangulate(cells);
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}
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/// <summary>
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/// 创建格子以及实例
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/// </summary>
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/// <param name="x"></param>
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/// <param name="z"></param>
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/// <param name="i"></param>
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void CreateCell(int x, int z, int i)
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{
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Vector3 position;
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position.x = (x + z * 0.5f - z / 2) * (HexMetrics.innerRadius * 2f);
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position.y = 0f;
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position.z = HexMetrics.offset * z;
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HexCell cell = cells[i] = Instantiate<HexCell>(cellPrefab);
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cell.transform.SetParent(transform, false);
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cell.transform.localPosition = position;
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cell.coordinates = HexCoordinates.FromOffsetCoordinates(x, z);
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cell.color = new Color(Random.Range(0, 1f), Random.Range(0, 1f), Random.Range(0, 1f), 1);
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}
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private void Update()
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{
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if (Input.GetMouseButtonDown(0))
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{
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HandleInput();
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}
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}
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/// <summary>
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/// 射线检测拿到射线点，然后传递给TouchCell进行实际位置判断
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/// </summary>
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void HandleInput()
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{
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Ray inputRay = Camera.main.ScreenPointToRay(Input.mousePosition);
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RaycastHit hit;
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if (Physics.Raycast(inputRay, out hit))
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{
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TouchCell(hit.point);
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}
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}
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/// <summary>
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/// 判断点击的哪个格子
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/// </summary>
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/// <param name="position"></param>
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public void TouchCell(Vector3 position)
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{
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// 将 position 从世界空间变换到本地空间
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position = transform.InverseTransformPoint(position);
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HexCoordinates coordinates = HexCoordinates.FromPosition(position);
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int index = coordinates.X + coordinates.Z * width + coordinates.Z / 2;
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HexCell cell = cells[index];
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cell.color = touchedColor;
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hexMesh.Triangulate(cells);
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}
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} |