private void OnUnloadWeapon()
{
var selectionIsLoadedWeapon = selection?.Ammunition != null;
var bothHandsAreEmpty = soldier.RightHand == null && soldier.LeftHand == null;
var canUnloadWeapon = selectionIsLoadedWeapon && bothHandsAreEmpty;
if (!canUnloadWeapon)
return;
if (!TryConsumeTimeUnits(8))
return;
soldier.LeftHand = new BattleItem
{
Item = selection.Ammunition,
Ammunition = null,
Rounds = selection.Rounds
};
soldier.RightHand = selection;
selection.Ammunition = null;
selection.Rounds = 0;
selection = null;
BattlescapeSoundEffect.Reload.Play();
}
private void TryLoadWeapon(BattleItem item)
{
if (!item.CanLoadWith(selection))
return;
if (!TryConsumeTimeUnits(15))
return;
item.Ammunition = (AmmunitionType) selection.Item;
item.Rounds = selection.Rounds;
selection = null;
BattlescapeSoundEffect.Reload.Play();
}
private void ClickBattleItemRow(BattleItem[] items, InventoryLocation location, int column)
{
if (selection == null)
{
selectionSource = location;
selection = SelectItem(items, column);
}
else
{
var dropLocation = GetDropLocation(items, column, selection);
if (dropLocation == null)
return;
if (!TryConsumeTimeUnits(GetTransferTimeUnits(location)))
return;
items[dropLocation.Value] = selection;
selection = null;
BattlescapeSoundEffect.ItemDrop.Play();
}
}
private BattleItem ClickHand(BattleItem item, InventoryLocation location)
{
if (selection == null && item == null)
return null;
if (selection != null && item != null)
{
TryLoadWeapon(item);
return item;
}
if (item != null)
{
selection = item;
selectionSource = location;
return null;
}
if (!TryConsumeTimeUnits(GetTransferTimeUnits(location)))
return null;
var newItem = selection;
selection = null;
BattlescapeSoundEffect.ItemDrop.Play();
return newItem;
}
private static BattleItem SelectItem(BattleItem[] items, int column)
{
foreach (var index in Enumerable.Range(0, items.Length))
{
var item = items[index];
if (item == null)
continue;
if (column >= index && column < index + item.Width)
{
items[index] = null;
return item;
}
}
return null;
}
private void ClickBattleItemGrid(
BattleItem[,] items,
InventoryLocation location,
int row,
int column,
Func<int, int, int, int, bool> canDropHere = null)
{
if (selection == null)
{
selectionSource = location;
selection = SelectItem(items, row, column);
if (location == InventoryLocation.Ground && selection != null)
ground.Remove(selection);
}
else
{
var dropLocation = GetDropLocation(items, row, column, selection);
if (dropLocation == null)
return;
var dropRow = dropLocation.Value.Y;
var dropColumn = dropLocation.Value.X;
if (canDropHere != null && !canDropHere(dropRow, dropColumn, selection.Width, selection.Height))
return;
if (!TryConsumeTimeUnits(GetTransferTimeUnits(location)))
return;
items[dropRow, dropColumn] = selection;
if (location == InventoryLocation.Ground)
ground.Add(selection);
selection = null;
BattlescapeSoundEffect.ItemDrop.Play();
}
}
private static int? GetDropLocation(BattleItem[] items, int column, BattleItem item)
{
if (item.Height > 1)
return null;
var width = item.Width;
if (items[column] != null)
return null;
if (width == 1)
return column;
if (column > 0 && items[column - 1] == null)
return column - 1;
if (column + 1 < items.Length && items[column + 1] == null)
return column;
return null;
}
private static BattleItem SelectItem(BattleItem[,] items, int row, int column)
{
var target = GetClickTargets(items)[row, column];
if (target == null)
return null;
var item = items[target.Value.Y, target.Value.X];
items[target.Value.Y, target.Value.X] = null;
return item;
}
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 FillGroundView(BattleItem[,] groundView, List<BattleItem> items, int row, int column, int maxWidth, int maxHeight)
{
if (maxWidth == 0 || maxHeight == 0 || !items.Any())
return;
for (var width = maxWidth; width > 0; --width)
{
for (var height = maxHeight; height > 0; --height)
{
var matchingItem = items.FirstOrDefault(item => item.Width == width && item.Height == height);
if (matchingItem == null)
continue;
groundView[row, column] = matchingItem;
items.Remove(matchingItem);
FillGroundView(groundView, items, row + height, column, width, maxHeight - height);
FillGroundView(groundView, items, row, column + width, maxWidth - width, maxHeight);
return;
}
}
}
private static void DrawCenteredBattleItem(GraphicsBuffer buffer, BattleItem item, int topRow, int leftColumn)
{
if (item == null)
return;
var top = topRow + (3 - item.Height) * 16 / 2;
var left = leftColumn + (2 - item.Width) * 16 / 2;
buffer.DrawItem(top, left, item.Image);
}
private static void DrawBattleItems(GraphicsBuffer buffer, BattleItem[] items, int topRow, int leftColumn)
{
foreach (var column in Enumerable.Range(0, items.Length))
{
var item = items[column];
if (item != null)
buffer.DrawItem(topRow, leftColumn + column * 16, item.Image);
}
}
private static BattleItem[,] CreateGroundView(List<BattleItem> items)
{
var groundView = new BattleItem[3, 20];
FillGroundView(groundView, items, 0, 0, 20, 3);
return groundView;
}
public bool CanLoadWith(BattleItem item)
{
return Ammunition == null && (item.Item as AmmunitionType?)?.Metadata().Weapon == (WeaponType?)Item;
}