private static Point?[,] GetClickTargets(BattleItem[,] items)
{
var rows = items.GetLength(0);
var columns = items.GetLength(1);
var targets = new Point?[rows, columns];
foreach (var row in Enumerable.Range(0, rows))
{
foreach (var column in Enumerable.Range(0, columns))
{
var item = items[row, column];
if (item == null)
continue;
foreach (var rowOffset in Enumerable.Range(0, item.Height))
foreach (var columnOffset in Enumerable.Range(0, item.Width))
targets[row + rowOffset, column + columnOffset] = new Point { X = column, Y = row };
}
}
return targets;
}
private static Point? GetDropLocation(BattleItem[,] items, int row, int column, BattleItem item)
{
var targets = GetClickTargets(items);
var itemWidth = item.Width;
var itemHeight = item.Height;
var width = items.GetLength(1);
var height = items.GetLength(0);
foreach (var rowOffset in Enumerable.Range(0, itemHeight))
foreach (var columnOffset in Enumerable.Range(0, itemWidth))
{
var dropRow = row - rowOffset;
var dropColumn = column - columnOffset;
if (CanDropHere(targets, dropRow, dropColumn, itemWidth, itemHeight, width, height))
return new Point { X = dropColumn, Y = dropRow };
}
return null;
}
private static void DrawBattleItems(GraphicsBuffer buffer, BattleItem[,] items, int topRow, int leftColumn)
{
foreach (var row in Enumerable.Range(0, items.GetLength(0)))
foreach (var column in Enumerable.Range(0, items.GetLength(1)))
{
var item = items[row, column];
if (item != null)
buffer.DrawItem(topRow + row * 16, leftColumn + column * 16, item.Image);
}
}