/// <summary>
/// Determines the absolute position of this position for a formation facing this direction.
/// For instance, for a facing of west, the front right position would be located in the northwest.
/// </summary>
/// <param name="facing"></param>
/// <returns></returns>
public AbsolutePosition AsAbsolute(Direction facing)
{
if (facing == Direction.North)
{
return(AbsolutePosition.FromCoordinates(Column, Row));
}
if (facing == Direction.South)
{
return(AbsolutePosition.FromCoordinates(2 - Column, 2 - Row));
}
if (facing == Direction.East)
{
return(AbsolutePosition.FromCoordinates(2 - Row, Column));
}
if (facing == Direction.West)
{
return(AbsolutePosition.FromCoordinates(Row, 2 - Column));
}
throw new ArgumentException("Invalid facing specified, not north/south/east/west");
}
private void Fight(Tile attackerTile, Tile defenderTile)
{
var attackers = attackerTile.Formation;
var defenders = defenderTile.Formation;
if (attackers == null || defenders == null)
{
return;
}
int tileSize = 3;
foreach (var kvp in attackers.CreaturePositions)
{
// who is attacking now?
var attacker = attackers.CreaturePositions[kvp.Key];
// is attacker blocked behind another attacker? then he can't attack
bool blocked = false;
RelativePosition pos = kvp.Key;
while (true)
{
var apos = pos.AsAbsolute(attackers.Facing);
apos = AbsolutePosition.FromCoordinates(apos.Column + attackers.Facing.DeltaX, apos.Row + attackers.Facing.DeltaY);
if (apos == null)
{
break;
}
pos = apos.RelativeTo(attackers.Facing);
if (pos != kvp.Key && attackers.CreaturePositions.ContainsKey(pos))
{
Log.Append("The " + attacker.Name + " is blocked by the " + attackers.CreaturePositions[pos].Name + ".");
blocked = true;
break;
}
}
if (blocked)
{
continue;
}
// find nearest target
Creature defender = null;
int distance;
var absPos = kvp.Key.AsAbsolute(attackers.Facing);
AbsolutePosition targetPos;
if (attackers.Facing == Direction.North)
{
distance = absPos.Row;
targetPos = AbsolutePosition.FromCoordinates(absPos.Column, tileSize - 1);
}
else if (attackers.Facing == Direction.South)
{
distance = tileSize - 1 - absPos.Row;
targetPos = AbsolutePosition.FromCoordinates(absPos.Column, 0);
}
else if (attackers.Facing == Direction.East)
{
distance = tileSize - 1 - absPos.Column;
targetPos = AbsolutePosition.FromCoordinates(0, absPos.Column);
}
else if (attackers.Facing == Direction.West)
{
distance = absPos.Column;
targetPos = AbsolutePosition.FromCoordinates(tileSize - 1, absPos.Column);
}
else
{
throw new Exception("Invalid formation facing, not north/south/east/west");
}
foreach (var distanceGroup in AbsolutePosition.All.GroupBy(pos2 => targetPos.DistanceTo(pos2)))
{
var matches = distanceGroup.Where(pos2 =>
{
var relpos = pos2.RelativeTo(defenders.Facing);
return(defenders.CreaturePositions.ContainsKey(relpos) && defenders.CreaturePositions[relpos] != null);
});
if (matches.Any())
{
// multiple targets at same distance? pick one at random!
defender = defenders.CreaturePositions[matches.Pick().RelativeTo(defenders.Facing)];
distance += distanceGroup.Key;
break;
}
}
// attaaaaack!
if (defender == null)
{
Log.Append("The " + attacker.Name + " has no one to attack."); // everyone's already dead!
}
else
{
var attack = attacker.Attack;
var defense = defender.Defense;
var atkBody = attacker.Body;
var atkMind = attacker.Mind;
var defBody = defender.Body;
var defMind = defender.Mind;
int atkStat, defStat, range;
string atkText;
if (atkBody - defBody >= atkMind - defMind)
{
// use physical attack
atkStat = atkBody;
defStat = defBody;
atkText = attacker.PhysicalAttackText;
range = attacker.PhysicalAttackRange;
}
else
{
// use mental attack
atkStat = atkMind;
defStat = defMind;
atkText = attacker.MentalAttackText;
range = attacker.MentalAttackRange;
}
var color = defenders == Heroes ? Color.Yellow : Color.White;
// accuracy penalty: 1/3 chance to miss for each subtile out of range
bool miss = false;
for (int i = 0; i < distance - range; i++)
{
if (Dice.Range(1, 3) == 1)
{
miss = true;
break;
}
}
string msg;
if (miss)
{
color = Color.Gray;
msg = "The " + attacker.Name + " " + atkText + " the " + defender.Name + ", but misses (attack range " + range + ", target distance " + distance + ").";
}
else
{
var atkRoll = Dice.Roll(attack, atkStat);
var defRoll = Dice.Roll(defense, defStat);
var damage = Math.Max(0, atkRoll - defRoll);
msg = "The " + attacker.Name + " " + atkText + " the " + defender.Name + " (" + attack + "d" + atkStat + " vs. " + defense + "d" + defStat + ") for " + damage + " damage.";
defender.Health -= damage;
if (defender.Health <= 0)
{
msg += " The " + defender.Name + " is slain!";
if (defenders == Heroes)
{
color = Color.Red;
}
foreach (var p in RelativePosition.All)
{
if (defenders.CreaturePositions.ContainsKey(p) && defenders.CreaturePositions[p] == defender)
{
KillCreature(defenderTile, p); // he's dead, Jim...
}
}
if (!defenders.CreaturePositions.Any())
{
defenderTile.Formation = null; // they're all dead, Dave...
}
}
}
Log.Append(msg, color);
}
}
}