/// <summary>Does a preview of what happens when a GridBrush.FloodFill is done with the same parameters.</summary>
/// <param name="gridLayout">Grid to paint data to.</param>
/// <param name="brushTarget">Target of the flood fill operation. By default the currently selected GameObject.</param>
/// <param name="position">The coordinates of the cell to flood fill data to.</param>
public virtual void FloodFillPreview(GridLayout gridLayout, GameObject brushTarget, Vector3Int position)
{
// This can be quite taxing on a large Tilemap, so users can choose whether to do this or not
if (!EditorPrefs.GetBool(GridBrushProperties.floodFillPreviewEditorPref, true))
{
return;
}
var bounds = new BoundsInt(position, Vector3Int.one);
if (brushTarget != null && brush.cellCount > 0)
{
Tilemap map = brushTarget.GetComponent <Tilemap>();
if (map != null)
{
GridBrush.BrushCell cell = brush.cells[0];
map.EditorPreviewFloodFill(position, cell.tile);
// Set floodfill bounds as tilemap bounds
bounds.min = map.origin;
bounds.max = map.origin + map.size;
}
}
m_LastGrid = gridLayout;
m_LastBounds = bounds;
m_LastBrushTarget = brushTarget;
m_LastTool = GridBrushBase.Tool.FloodFill;
}
/// <summary>Paints preview data into a cell of a grid given the coordinates of the cell.</summary>
/// <param name="gridLayout">Grid to paint data to.</param>
/// <param name="brushTarget">Target of the paint operation. By default the currently selected GameObject.</param>
/// <param name="position">The coordinates of the cell to paint data to.</param>
/// <remarks>The grid brush will paint preview sprites in its brush cells onto an associated Tilemap. This will not instantiate objects associated with the painted tiles.</remarks>
public virtual void PaintPreview(GridLayout gridLayout, GameObject brushTarget, Vector3Int position)
{
Vector3Int min = position - brush.pivot;
Vector3Int max = min + brush.size;
BoundsInt bounds = new BoundsInt(min, max - min);
if (brushTarget != null)
{
Tilemap map = brushTarget.GetComponent <Tilemap>();
foreach (Vector3Int location in bounds.allPositionsWithin)
{
Vector3Int brushPosition = location - min;
GridBrush.BrushCell cell = brush.cells[brush.GetCellIndex(brushPosition)];
if (cell.tile != null && map != null)
{
SetTilemapPreviewCell(map, location, cell.tile, cell.matrix, cell.color);
}
}
}
m_LastGrid = gridLayout;
m_LastBounds = bounds;
m_LastBrushTarget = brushTarget;
m_LastTool = GridBrushBase.Tool.Paint;
}
private bool CheckFloodFillPreview(GridLayout gridLayout, GameObject brushTarget, Vector3Int position)
{
if (m_LastGrid == gridLayout &&
m_LastBrushTarget == brushTarget &&
m_LastBounds.HasValue && m_LastBounds.Value.Contains(position) &&
brushTarget != null && brush.cellCount > 0)
{
Tilemap map = brushTarget.GetComponent <Tilemap>();
if (map != null)
{
GridBrush.BrushCell cell = brush.cells[0];
if (cell.tile == map.GetEditorPreviewTile(position))
{
return(false);
}
}
}
return(true);
}
/// <summary>Does a preview of what happens when a GridBrush.BoxFill is done with the same parameters.</summary>
/// <param name="gridLayout">Grid to box fill data to.</param>
/// <param name="brushTarget">Target of box fill operation. By default the currently selected GameObject.</param>
/// <param name="position">The bounds to box fill data to.</param>
public virtual void BoxFillPreview(GridLayout gridLayout, GameObject brushTarget, BoundsInt position)
{
if (brushTarget != null)
{
Tilemap map = brushTarget.GetComponent <Tilemap>();
if (map != null)
{
foreach (Vector3Int location in position.allPositionsWithin)
{
Vector3Int local = location - position.min;
GridBrush.BrushCell cell = brush.cells[brush.GetCellIndexWrapAround(local.x, local.y, local.z)];
if (cell.tile != null)
{
SetTilemapPreviewCell(map, location, cell.tile, cell.matrix, cell.color);
}
}
}
}
m_LastGrid = gridLayout;
m_LastBounds = position;
m_LastBrushTarget = brushTarget;
m_LastTool = GridBrushBase.Tool.Box;
}