98 lines
3.3 KiB
C#
98 lines
3.3 KiB
C#
using System.Collections.Generic;
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using System.Linq;
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using Assets.Common;
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using Assets.Map;
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using UnityEngine;
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namespace Assets
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{
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[RequireComponent(typeof(MeshFilter))]
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[RequireComponent(typeof(MeshRenderer))]
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[RequireComponent(typeof(GraphGenerator))]
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public class MapRenderer : MonoBehaviour
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{
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public float uvScale = 1.0f;
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private List<Vector3> _vertices;
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private List<Vector3> _normals;
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private List<int> _triangles;
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public void Generate()
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{
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var graph = GetComponent<GraphGenerator>();
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graph.Reset();
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graph.Generate();
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var points = graph.VoronoiGenerator.Voronoi.Vertices;
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_vertices = new List<Vector3>();
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_normals = new List<Vector3>();
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_triangles = new List<int>();
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foreach (var location in graph.LocationGenerator.Result.Vertices.Skip(1))
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{
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GenerateLocationMesh(location, points);
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GenerateLocationWall(location, points);
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}
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Mesh mesh = new Mesh();
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mesh.vertices = _vertices.ToArray();
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mesh.uv = _vertices.Select(v => new Vector2(v.x, v.z) / uvScale).ToArray();
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mesh.normals = _normals.ToArray();
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mesh.triangles = _triangles.ToArray();
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GetComponent<MeshFilter>().sharedMesh = mesh;
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}
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private void GenerateLocationMesh(Location location, IList<Point> points)
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{
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foreach (var vertices in location.Sites.Select(site => site.Edges.Select(x => points[x.Item1]).Reverse()))
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{
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int start = _vertices.Count;
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foreach (var vertex in vertices)
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{
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_vertices.Add(PointToVector(location, vertex));
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_normals.Add(Vector3.up);
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}
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int end = _vertices.Count;
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for (int i = start + 1; i < end - 1; i++)
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{
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_triangles.AddRange(new []{ start, i, i+1 });
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}
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}
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}
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private static Vector3 PointToVector(Location location, Point vertex)
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{
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return new Vector3((float)vertex.x, location.Type.height + Mathf.PerlinNoise((float)vertex.x, (float)vertex.y) / 4, (float)vertex.y);
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}
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private void GenerateLocationWall(Location location, IList<Point> points)
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{
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foreach (var (a, b) in location.BoundaryEdges.Select(x => (points[x.Item1], points[x.Item2])))
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{
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int start = _vertices.Count;
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_vertices.Add(PointToVector(location, a));
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_vertices.Add(PointToVector(location, b));
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_vertices.Add(new Vector3((float)a.x, -10,(float)a.y));
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_vertices.Add(new Vector3((float)b.x, -10,(float)b.y));
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_normals.Add(Vector3.up);
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_normals.Add(Vector3.up);
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_normals.Add(Vector3.up);
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_normals.Add(Vector3.up);
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_triangles.AddRange(new []
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{
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start, start + 1, start + 2,
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start + 1, start + 3, start + 2
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});
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}
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}
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}
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} |