// ReSharper disable once CyclomaticComplexity
public Option <ICommand> HandleKeyInput(int key)
{
Player player = Game.Player;
switch (InputMapping.GetNormalInput(key))
{
case NormalInput.None:
return(Option.None <ICommand>());
#region Movement Keys
case NormalInput.MoveW:
return(Option.Some <ICommand>(new MoveCommand(player, player.Pos + Direction.W)));
case NormalInput.MoveS:
return(Option.Some <ICommand>(new MoveCommand(player, player.Pos + Direction.S)));
case NormalInput.MoveN:
return(Option.Some <ICommand>(new MoveCommand(player, player.Pos + Direction.N)));
case NormalInput.MoveE:
return(Option.Some <ICommand>(new MoveCommand(player, player.Pos + Direction.E)));
case NormalInput.MoveNW:
return(Option.Some <ICommand>(new MoveCommand(player, player.Pos + Direction.NW)));
case NormalInput.MoveNE:
return(Option.Some <ICommand>(new MoveCommand(player, player.Pos + Direction.NE)));
case NormalInput.MoveSW:
return(Option.Some <ICommand>(new MoveCommand(player, player.Pos + Direction.SW)));
case NormalInput.MoveSE:
return(Option.Some <ICommand>(new MoveCommand(player, player.Pos + Direction.SE)));
case NormalInput.Wait:
return(Option.Some <ICommand>(new WaitCommand(player)));
#endregion
case NormalInput.Cast:
int spellnum = key - BearLib.Terminal.TK_1;
if (spellnum >= player.SpellList.Count)
{
return(Option.None <ICommand>());
}
Spell.ISpell spell = player.SpellList[spellnum];
return(CastSpell(player, spellnum, spell));
case NormalInput.Get:
return(Game.MapHandler.GetItem(player.Pos)
.FlatMap(item => Option.Some <ICommand>(new PickupCommand(player, item))));
case NormalInput.OpenMenu:
Game.Exit();
return(Option.None <ICommand>());
}
return(Option.None <ICommand>());
}
private static Option <ICommand> CastSpell(Player player, int spellnum, Spell.ISpell spell)
{
int mainMana = spell.Cost.MainManaUsed();
int altMana = spell.Cost.AltManaUsed();
int minMainCost = spell.Cost.MainCost.Item1;
int minAltCost = spell.Cost.AltCost.Item1;
if (mainMana < minMainCost || mainMana < minAltCost)
{
Game.MessagePanel.AddMessage("Not enough mana");
return(Option.None <ICommand>());
}
if (spell.Instant)
{
// TODO: multi-hitting instants
return(spell.Zone.GetAllValidTargets(player.Pos)
.Random(Game.Rand)
.FlatMap(cursor =>
{
IEnumerable <Loc> targets = spell.Zone.GetTilesInRange(player.Pos, cursor);
PaySpellCost(player, spell, mainMana, altMana);
return Option.Some(spell.Evoke(player, targets, (mainMana, altMana)));
}));
}
else
{
Game.StateHandler.PushState(
new TargettingState(player, spell.Zone, spellnum, targets =>
{
if (!targets.Any())
{
return(Option.None <ICommand>());
}
PaySpellCost(player, spell, mainMana, altMana);
Game.StateHandler.PopState();
return(Option.Some(spell.Evoke(player, targets, (mainMana, altMana))));
}));
