internal void GenerateIslands()
{
Noise islandsNoise = _instance.islandsNoise;
GridRandom buildingsRandom = _instance.buildingsRandom;
TileTierStruct[] tiers = _instance.floorBlocksTiers;
BuildingGenStruct[] buildings = _instance.buildingsGeneration;
for (int loopX = 0; loopX < CHUNK_SIZE; loopX++)
{
for (int loopY = 0; loopY < CHUNK_SIZE; loopY++)
{
Vector2Int gridPosition = new Vector2Int(loopX, loopY) + chunkStartPos;
float distance = Vector2Int.Distance(gridPosition, Vector2Int.zero);
if (distance > _instance.clearZoneRadius)
{
if (islandsNoise.CheckThreshold(gridPosition, out float noiseValue))
{
TileAbstSO tile = tiers[tiers.Length - 1].tile;
for (int i = 0; i < tiers.Length; i++)
{
if (distance <= tiers[i].distance)
{
float overlap = (distance - tiers[i].overlapStart) / (tiers[i].distance - tiers[i].overlapStart);
if (distance > tiers[i].overlapStart && easeInOutBounce(overlap) > islandsNoise.GetRandomValue(gridPosition))
{
tile = tiers[i].tile;
}
else
{
tile = tiers[i - 1].tile;
}
break;
}
}
SetTile(new TileSlot(tile), ChunkToGridPosition(new Vector2Int(loopX, loopY)), TileMapLayer.Floor, false, true);
TileAbstSO building = ChooseBuilding(gridPosition, distance);
if (building != null)
{
SetTile(new TileSlot(building), gridPosition, TileMapLayer.Buildings, false, true);
}
}
}
else if (distance <= _instance.startIslandRadius)
{
SetTile(new TileSlot(_instance.startIslandTile), ChunkToGridPosition(new Vector2Int(loopX, loopY)), TileMapLayer.Floor, false, true);
}
}
}
TileAbstSO ChooseBuilding(Vector2Int gridPosition, float distance)
{
float sumWeight = 0f;
float[] chances = new float[buildings.Length];
for (int i = 0; i < buildings.Length; i++)
{
if (buildings[i].global)
{
chances[i] = buildings[i].chance;
}
else
{
chances[i] = easeInOutSine(1 - Mathf.Clamp(Mathf.Abs(buildings[i].distance - distance) / buildings[i].spread, 0f, 1f)) * buildings[i].chance;
}
sumWeight += chances[i];
}
if (sumWeight > 1)
{
for (int i = 0; i < chances.Length; i++)
{
chances[i] /= sumWeight;
}
}
float roll = buildingsRandom.GetRandomValue(gridPosition);
for (int i = 0; i < chances.Length; i++)
{
roll -= chances[i];
if (roll <= 0f)
{
return(buildings[i].tile);
}
}
return(null);
}
}