void Update()
{
toolScale += Input.mouseScrollDelta.y;
toolScale = Mathf.Clamp(toolScale, 0f, 50f);
toolPrefabInstance.transform.localScale = Vector3.one * toolScale;
Ray ray = cam.ScreenPointToRay(Input.mousePosition);
Vector3 toolPos = Physics.Raycast(ray, out RaycastHit hitInfo)
? hitInfo.point
: ray.direction * maxDistance + ray.origin;
bool isNear = Vector3.Distance(toolPos, ray.origin) - toolScale / 2 < minDistance;
toolPrefabInstance.SetActive(!isNear);
toolPrefabInstance.transform.position = toolPos;
if (Input.GetMouseButton(0))
{
if (Time.time > nextTick)
{
nextTick = Time.time + toolTick;
var terraformMode = Input.GetKey(KeyCode.LeftShift)
? TerraformMode.Add
: TerraformMode.Subtract;
Voxel.Grid grid = gridGenerator.GetGridFromWorldPosition(toolPos);
if (!ReferenceEquals(grid, null))
{
Terraform(grid, toolPos, toolScale / 2, toolStrength, terraformMode, toolSmooth);
}
ignoreGrids.Clear();
}
}
}
public void Terraform(Voxel.Grid grid, Vector3 pos, float radius, float strength, TerraformMode mode, bool smooth = true)
{
ISet <Vector3Int> toRefresh = new HashSet <Vector3Int>();
grid.ForeachCoordinate(cellPos =>
{
GridCell cell = grid.GetCell(cellPos);
for (int i = 0; i < 8; i++)
{
Vector3 valuePos = (Vector3)grid.GridPosition * grid.GridScale + cell.GetValuePos(i);
float distanceSqrt = (pos - valuePos).sqrMagnitude;
if (distanceSqrt < radius * radius)
{
float value = 0.0f;
value += strength;
if (smooth)
{
value *= 1 - distanceSqrt / (radius * radius);
}
switch (mode)
{
case TerraformMode.Add:
cell.Values[i] -= value;
break;
case TerraformMode.Subtract:
cell.Values[i] += value;
break;
}
cell.Values[i] = Mathf.Clamp(cell.Values[i], -1.5f, 1.5f);
if (cellPos.x == 0)
{
toRefresh.Add(grid.GridPosition + new Vector3Int(-1, 0, 0));
}
else if (cellPos.x == grid.Data.CellCount - 1)
{
toRefresh.Add(grid.GridPosition + new Vector3Int(1, 0, 0));
}
if (cellPos.y == 0)
{
toRefresh.Add(grid.GridPosition + new Vector3Int(0, -1, 0));
}
else if (cellPos.y == grid.Data.CellCount - 1)
{
toRefresh.Add(grid.GridPosition + new Vector3Int(0, 1, 0));
}
if (cellPos.z == 0)
{
toRefresh.Add(grid.GridPosition + new Vector3Int(0, 0, -1));
}
else if (cellPos.z == grid.Data.CellCount - 1)
{
toRefresh.Add(grid.GridPosition + new Vector3Int(0, 0, 1));
}
}
}
});
ignoreGrids.Add(grid.GridPosition);
foreach (Vector3Int gridPos in toRefresh)
{
if (ignoreGrids.Contains(gridPos))
{
continue;
}
if (gridGenerator.Grids.TryGetValue(gridPos, out Voxel.Grid refreshGrid))
{
Terraform(refreshGrid, pos, radius, strength, mode, smooth);
}
}
gridGenerator.RefreshGrid(grid.GridPosition);
}