private void Awake()
{
if (ChunkRockGenerator.AssetPrefabs == null)
{
ChunkRockGenerator.LoadPrefabs();
}
this.GameController = GameController.GetSharedInstance();
this.PlacedAssets = new List <GameObject>();
this.sampler = new PoissonDiscSampler();
}
public void Generate()
{
//totally random distribution as Poisson doesnt look great.
var points = FakeDistribution();
for (var t = 0; t < points.Count; t++)
{
if (points[t] != null)
{
//position to place at.
Vector3 pos = (Vector3)points[t];
if (ParentChunk.Terrain.terrainData.GetHeight((int)pos.x, (int)pos.z) > TerrainChunkSettings.SeaLevelGlobal)
{
//adjust rock specific height based on steepness to hide edges better
float normalizedX = pos.x / ParentChunk.Terrain.terrainData.size.x;
float normalizedY = pos.z / ParentChunk.Terrain.terrainData.size.z;
float slope = ParentChunk.Terrain.terrainData.GetSteepness(normalizedX, normalizedY);
float slopeOffsetHeight = (slope > 25.0f ? 3.2f : 0.5f);
//choose random rock type
GameObject chosenRock = ChunkRockGenerator.ChooseRandomAsset();
//set the offset for placing in the chunks world position X, Z. uses terrain height for Y
Vector3 offsetPosition = new Vector3(
(ParentChunk.Position.X * ParentChunk.Terrain.terrainData.size.x),
ParentChunk.Terrain.terrainData.GetHeight((int)pos.x, (int)pos.z) - slopeOffsetHeight,
(ParentChunk.Position.Z * ParentChunk.Terrain.terrainData.size.z)
);
Vector3 spawnPosition = pos + offsetPosition;
//gives rock random rotation in the y-axis
Quaternion randomRotation = Quaternion.Euler(0, UnityEngine.Random.Range(0, 360), 0);
float scaleModifer = UnityEngine.Random.Range(0.1f, 0.5f);
Vector3 randomSize = new Vector3(scaleModifer, scaleModifer, scaleModifer);
chosenRock.transform.localScale = randomSize;
GameObject spawnedAsset = Instantiate(chosenRock, spawnPosition, randomRotation);
//parent it under this component and track it
spawnedAsset.transform.parent = this.transform;
PlacedAssets.Add(spawnedAsset);
RemoveOverlappingAssets(spawnedAsset);
}
}
}
}
