riversong code showcase

Source/Riversong/Game/WorldGen/ChunkGenerators/TerrainChunkMeshGenerator.cs

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+using System.Collections.Generic;
+using Unity.Collections;
+using Unity.Jobs;
+using Unity.Mathematics;
+using UnityEngine;
+
+namespace DanieleMarotta.RiversongCodeShowcase
+{
+    public class TerrainChunkMeshGenerator : ChunkMeshGenerator
+    {
+        public TerrainChunkMeshGenerator(World world, GameConfig config) : base(world, config)
+        {
+        }
+
+        protected override int GetLodCount()
+        {
+            return 1;
+        }
+
+        protected override string GetGameObjectName(string chunkName, int2 chunkCoords, int lod)
+        {
+            return $"{chunkName}_Terrain";
+        }
+
+        protected override void InitializeChunk(TerrainChunk chunk, int lod, GameObject gameObject, Mesh mesh, Renderer renderer)
+        {
+            gameObject.layer = GameObjectLayers.Terrain;
+
+            chunk.Terrain = new TerrainChunk.RenderData(mesh, renderer);
+        }
+
+        protected override Mesh GetMesh(TerrainChunk chunk, int lod)
+        {
+            return chunk.Terrain.Mesh;
+        }
+
+        protected override JobHandle ScheduleJob(ChunkGenerationJobState jobState, NativeArray<int2> chunkCoords)
+        {
+            return new GenerateTerrainChunkJob
+            {
+                WorldSize = World.Size,
+                ChunkCoordsArray = chunkCoords,
+                ChunkSize = Config.WorldGen.ChunkSize,
+                Heightmap = World.Heightmap.GetNativeArray(),
+                MeshDataArray = jobState.MeshDataArray
+            }.Schedule(chunkCoords.Length, Config.WorldGen.ChunksPerThread);
+        }
+
+        protected override void OnCompleted(int lod, List<TerrainChunk> chunks)
+        {
+            foreach (var chunk in chunks)
+            {
+                var mesh = chunk.Terrain.Mesh;
+                var renderer = chunk.Terrain.Renderer;
+
+                var subMeshCount = mesh.subMeshCount;
+
+                var materials = new Material[subMeshCount];
+                materials[0] = Config.Terrain.GroundMaterial;
+                if (subMeshCount > 1) materials[1] = Config.Terrain.CliffMaterial;
+
+                renderer.sharedMaterials = materials;
+
+                renderer.gameObject.AddComponent<MeshCollider>();
+            }
+        }
+    }
+}