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180
Assets/Blocks/Scripts/Chunk.cs
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180
Assets/Blocks/Scripts/Chunk.cs
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using System.Collections.Generic;
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using UnityEngine;
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/// <summary>
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/// MonoBehaviour-обёртка над ChunkData.
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/// Хранит данные блоков и собирает процедурный меш с face culling.
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/// </summary>
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[RequireComponent(typeof(MeshFilter))]
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[RequireComponent(typeof(MeshRenderer))]
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[RequireComponent(typeof(MeshCollider))]
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public class Chunk : MonoBehaviour
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{
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public ChunkData Data { get; private set; }
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MeshFilter _filter;
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MeshRenderer _renderer;
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MeshCollider _collider;
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Mesh _mesh;
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// ── 6 направлений граней ──────────────────────────────────────────────────
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// Порядок: Top, Bottom, Front(Z+), Back(Z-), Right(X+), Left(X-)
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static readonly Vector3Int[] Directions =
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{
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Vector3Int.up, Vector3Int.down,
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new(0,0,1), new(0,0,-1),
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new(1,0,0), new(-1,0,0)
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};
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// Вершины каждой грани (относительно нижнего-левого угла блока)
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// Порядок по часовой стрелке, смотрим снаружи
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static readonly Vector3[][] FaceVerts =
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{
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// Top (Y+)
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new[] { new Vector3(0,1,0), new Vector3(0,1,1), new Vector3(1,1,1), new Vector3(1,1,0) },
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// Bottom (Y-)
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new[] { new Vector3(0,0,0), new Vector3(1,0,0), new Vector3(1,0,1), new Vector3(0,0,1) },
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// Front (Z+)
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new[] { new Vector3(1,0,1), new Vector3(0,0,1), new Vector3(0,1,1), new Vector3(1,1,1) },
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// Back (Z-)
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new[] { new Vector3(0,0,0), new Vector3(1,0,0), new Vector3(1,1,0), new Vector3(0,1,0) },
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// Right (X+)
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new[] { new Vector3(1,0,0), new Vector3(1,0,1), new Vector3(1,1,1), new Vector3(1,1,0) },
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// Left (X-)
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new[] { new Vector3(0,0,1), new Vector3(0,0,0), new Vector3(0,1,0), new Vector3(0,1,1) }
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};
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// UV для каждой из 4 вершин грани
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static readonly Vector2[] FaceUVs =
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{
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new(0,0), new(1,0), new(1,1), new(0,1)
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};
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// ── Инициализация ─────────────────────────────────────────────────────────
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void Awake()
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{
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_filter = GetComponent<MeshFilter>();
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_renderer = GetComponent<MeshRenderer>();
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_collider = GetComponent<MeshCollider>();
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_mesh = new Mesh { name = "ChunkMesh" };
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_mesh.MarkDynamic(); // оптимизация для часто изменяемых мешей
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_filter.sharedMesh = _mesh;
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}
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public void Initialise(ChunkData data, Material chunkMaterial)
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{
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Data = data;
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_renderer.sharedMaterial = chunkMaterial;
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RebuildMesh();
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}
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// ── Публичный API ─────────────────────────────────────────────────────────
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public void SetBlock(Vector3Int localPos, string blockId)
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{
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Data.SetBlock(localPos, blockId);
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RebuildMesh();
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}
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public void RemoveBlock(Vector3Int localPos)
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{
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Data.SetBlock(localPos, null);
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RebuildMesh();
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}
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public string GetBlock(Vector3Int localPos) => Data.GetBlock(localPos);
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// ── Построение меша ───────────────────────────────────────────────────────
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public void RebuildMesh()
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{
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if (Data == null) return;
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var verts = new List<Vector3>();
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var tris = new List<int>();
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var uvs = new List<Vector2>(); // UV0: координаты на грани 0-1
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var texCoord1 = new List<Vector2>(); // UV1: x = индекс в Texture2DArray
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for (int x = 0; x < ChunkData.SIZE; x++)
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for (int y = 0; y < ChunkData.HEIGHT; y++)
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for (int z = 0; z < ChunkData.SIZE; z++)
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{
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string blockId = Data.GetBlock(x, y, z);
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if (blockId == null) continue;
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var def = BlockRegistry.Instance?.GetById(blockId);
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if (def == null) continue;
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for (int f = 0; f < 6; f++)
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{
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Vector3Int neighbour = new Vector3Int(x, y, z) + Directions[f];
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// Face culling: пропускаем грань если сосед — твёрдый блок
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if (HasSolidNeighbour(neighbour)) continue;
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// Индекс текстуры для этой грани
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int texIndex = f == 0 ? def.topIndex :
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f == 1 ? def.bottomIndex :
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def.sideIndex;
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int baseVert = verts.Count;
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var origin = new Vector3(x, y, z);
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for (int v = 0; v < 4; v++)
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{
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verts.Add(origin + FaceVerts[f][v]);
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uvs.Add(FaceUVs[v]);
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texCoord1.Add(new Vector2(texIndex, 0));
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}
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// Два треугольника на грань
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tris.Add(baseVert + 0);
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tris.Add(baseVert + 1);
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tris.Add(baseVert + 2);
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tris.Add(baseVert + 0);
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tris.Add(baseVert + 2);
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tris.Add(baseVert + 3);
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}
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}
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_mesh.Clear();
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_mesh.SetVertices(verts);
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_mesh.SetTriangles(tris, 0);
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_mesh.SetUVs(0, uvs);
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_mesh.SetUVs(1, texCoord1);
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_mesh.RecalculateNormals();
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_mesh.RecalculateBounds();
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// Обновляем коллайдер (нужен для рейкаста)
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_collider.sharedMesh = null;
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_collider.sharedMesh = _mesh;
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Data.ClearDirty();
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}
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// ── Face culling ──────────────────────────────────────────────────────────
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bool HasSolidNeighbour(Vector3Int localPos)
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{
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// Сосед внутри этого чанка
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if (ChunkData.InBounds(localPos.x, localPos.y, localPos.z))
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{
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string id = Data.GetBlock(localPos);
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if (id == null) return false;
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var def = BlockRegistry.Instance?.GetById(id);
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return def != null && def.isSolid;
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}
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// Сосед в соседнем чанке — спрашиваем WorldManager
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if (WorldManager.Instance == null) return false;
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Vector3Int worldOrigin = ChunkData.ChunkToWorld(Data.ChunkPos);
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Vector3Int worldNeighbour = worldOrigin + localPos;
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string neighbourId = WorldManager.Instance.GetBlock(worldNeighbour);
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if (neighbourId == null) return false;
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var neighbourDef = BlockRegistry.Instance?.GetById(neighbourId);
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return neighbourDef != null && neighbourDef.isSolid;
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}
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}
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