riversong code showcase

2026-05-21 15:52:18 +02:00
commit 4c9eea1c02
462 changed files with 23406 additions and 0 deletions
--- a/Source/Riversong/Game/WorldGen/ChunkGenerators/GrassChunkMeshGeneratorBase.cs
+++ b/Source/Riversong/Game/WorldGen/ChunkGenerators/GrassChunkMeshGeneratorBase.cs
@@ -0,0 +1,72 @@
+using System.Collections.Generic;
+using Unity.Collections;
+using Unity.Jobs;
+using Unity.Mathematics;
+using UnityEngine;
+using Random = Unity.Mathematics.Random;
+
+namespace DanieleMarotta.RiversongCodeShowcase
+{
+    public abstract class GrassChunkMeshGeneratorBase<T> : ChunkMeshGenerator where T : unmanaged, IGrassTileMask
+    {
+        protected GrassChunkMeshGeneratorBase(World world, GameConfig config) : base(world, config)
+        {
+        }
+
+        protected override void InitializeChunk(TerrainChunk chunk, int lod, GameObject gameObject, Mesh mesh, Renderer renderer)
+        {
+            renderer.enabled = false;
+        }
+
+        protected override void OnCompleted(int lod, List<TerrainChunk> chunks)
+        {
+            foreach (var chunk in chunks)
+            {
+                var renderer = GetRenderer(chunk, lod);
+                renderer.sharedMaterial = GetMaterial(lod);
+            }
+        }
+
+        protected abstract Renderer GetRenderer(TerrainChunk chunk, int lod);
+
+        protected abstract Material GetMaterial(int lod);
+
+        protected override JobHandle ScheduleJob(ChunkGenerationJobState jobState, NativeArray<int2> chunkCoords)
+        {
+            var randomArray = new NativeArray<Random>(chunkCoords.Length, Allocator.Persistent);
+            for (var i = 0; i < randomArray.Length; i++) randomArray[i] = Random.CreateFromIndex((uint)(World.Seed + i));
+
+            var jobHandle = ScheduleJob(jobState, chunkCoords, randomArray);
+
+            randomArray.Dispose(jobHandle);
+
+            return jobHandle;
+        }
+
+        protected abstract JobHandle ScheduleJob(ChunkGenerationJobState jobState, NativeArray<int2> chunkCoords, NativeArray<Random> randomArray);
+
+        protected void PrepareJob(ChunkGenerationJobState jobState, NativeArray<int2> chunkCoords, NativeArray<Random> randomArray, int lod, ref GenerateGrassChunkJob<T> job)
+        {
+            var grassGenerationConfig = GetGrassGenerationConfig();
+
+            job.WorldSize = World.Size;
+            job.ChunkCoordsArray = chunkCoords;
+            job.ChunkSize = Config.WorldGen.ChunkSize;
+            job.Mask = GetMask();
+            job.Heightmap = World.Heightmap.GetNativeArray();
+            job.MeshDataArray = jobState.MeshDataArray;
+            job.RandomArray = randomArray;
+            job.Density = GetDensityForLOD(lod);
+            job.NoiseScale = grassGenerationConfig.NoiseScale;
+            job.DiscardThreshold = grassGenerationConfig.NoiseDiscardThreshold;
+            job.BladeWidth = grassGenerationConfig.BladeWidth;
+            job.BladeHeightRange = grassGenerationConfig.BladeHeightRange;
+        }
+
+        protected abstract GameConfig.WorldGenConfig.GrassConfig GetGrassGenerationConfig();
+
+        protected abstract T GetMask();
+
+        protected abstract int GetDensityForLOD(int lod);
+    }
+}