void Update()
{
bool leftButton = Input.GetMouseButton(0);
bool rightButton = Input.GetMouseButton(1);
// Switch between grids when space key is pressed
if (Input.GetKeyDown(KeyCode.Space))
{
largeSystemActive = !largeSystemActive;
}
// Respond to mouse event?
if (leftButton || rightButton)
{
// Find mouse position in 3D space
Ray mouseRay = Camera.main.ScreenPointToRay(Input.mousePosition);
TileIndex index = _currentSystem.ClosestTileIndexFromRay(mouseRay);
if (leftButton && _lastPainted != index)
{
// Ignore if this tile was painted last!
_lastPainted = index;
// Paint with left mouse button
_brush.Paint(_currentSystem, index.row, index.column);
_currentSystem.RefreshSurroundingTiles(index.row, index.column);
}
else if (rightButton)
{
// Ignore last painted state
_lastPainted = new TileIndex(-1, -1);
// Erase with right mouse button
_currentSystem.EraseTile(index.row, index.column);
_currentSystem.RefreshSurroundingTiles(index.row, index.column);
}
}
}
/// <summary>
/// Erase all out-of-bound tiles.
/// </summary>
/// <param name="system">Tile system.</param>
/// <param name="newRows">New number of rows.</param>
/// <param name="newColumns">New number of columns.</param>
/// <param name="rowOffset">Number of rows of tiles to offset by.</param>
/// <param name="columnOffset">Number of columns of tiles to offset by.</param>
private void EraseOutOfBoundTiles(TileSystem system, int newRows, int newColumns, int rowOffset, int columnOffset)
{
if (system.Chunks == null)
{
return;
}
rowOffset = -rowOffset;
columnOffset = -columnOffset;
int offsetEndRow = rowOffset + newRows;
int offsetEndColumn = columnOffset + newColumns;
system.BeginBulkEdit();
for (int row = 0; row < system.RowCount; ++row)
{
for (int column = 0; column < system.ColumnCount; ++column)
{
var tile = system.GetTile(row, column);
if (tile == null)
{
continue;
}
// Is tile out-of-bounds?
if (row < rowOffset || row >= offsetEndRow || column < columnOffset || column >= offsetEndColumn)
{
system.EraseTile(row, column);
system.RefreshSurroundingTiles(row, column);
}
}
}
system.EndBulkEdit();
}
public static bool ClearTile(this TileSystem map, int x, int y)
{
return(map.EraseTile(y, x));
}
