protected void SetComponentData(Entity entity, SpawnItemData item)
{
manager.SetComponentData(entity, new Position {
Value = item.position
});
manager.SetComponentData(entity, new Rotation {
Value = item.rotation
});
manager.AddBuffer <NeighboursBufferElement>(entity);
}
protected void ComputePlacement(ref SpawnItemData item)
{
var height = terrain.SampleHeight(item.position);
var normal = terrainData.GetInterpolatedNormal((item.position.x - terrainOrigin.x) / terrainSize.x, (item.position.z - terrainOrigin.z) / terrainSize.z);
var rotation = Quaternion.FromToRotation(Vector3.up, normal);
item.position.y = height + terrainOrigin.y;
item.rotation = new float4 {
x = rotation.x, y = rotation.y, z = rotation.z, w = rotation.w
};
}
public void Spawn(int amount)
{
var spawnedEntities = new Queue <GameObject>();
for (var i = 0; i < amount; i++)
{
var plant = UnityEngine.Object.Instantiate(settings.plantsPrefab);
var x = UnityEngine.Random.Range(terrainOrigin.x, terrainOrigin.x + terrainSize.x);
var z = UnityEngine.Random.Range(terrainOrigin.z, terrainOrigin.z + terrainSize.z);
var item = new SpawnItemData {
position = new float3 {
x = x, y = 0, z = z
}
};
ComputePlacement(ref item);
var entity = plant.GetComponent <GameObjectEntity>().Entity;
SetComponentData(entity, item);
database.Add(plant);
spawnedEntities.Enqueue(plant);
}
var distance = settings.neighborSize;
while (spawnedEntities.Count > 0)
{
var entity = spawnedEntities.Dequeue().GetComponent <GameObjectEntity>().Entity;
var pos = manager.GetComponentData <Position>(entity).Value;
var neighboursBuffer = manager.GetBuffer <NeighboursBufferElement>(entity);
var neighbours = database.GetNeighbours(
(int)(pos.x - distance / 2),
(int)(pos.z - distance / 2),
(int)distance,
(int)distance
);
for (int e = 0; e < neighbours.Count; e++)
{
if (entity != neighbours[e].entity)
{
neighboursBuffer.Add(new NeighboursBufferElement {
entity = neighbours[e].entity
});
}
}
}
}
public void Spawn(float worldX, float worldZ)
{
var plant = Object.Instantiate(settings.plantsPrefab);
var item = new SpawnItemData {
position = new float3 {
x = worldX, y = 0, z = worldZ
}
};
ComputePlacement(ref item);
var entity = plant.GetComponent <GameObjectEntity>().Entity;
SetComponentData(entity, item);
database.Add(plant);
AddNeighbors(plant);
}