public StrategyResult Apply(UnitBase unit)
{
if (unit.Power < 5)
{
return(StrategyResult.NotEnoughPower);
}
IUnit nearestEnemyUnit = unit.Enemy != null && !unit.Enemy.IsDead ? unit.Enemy : null;
var minDistance = int.MaxValue;
if (nearestEnemyUnit == null)
{
foreach (var testUnit in _world.Army.GetNearbyUnits(unit, _lookupRadius))
{
if (testUnit == null || testUnit.Team == unit.Team || testUnit.IsDead)
{
continue;
}
var distanceSquared = DistanceHelper.GetDistanceSquared(unit, testUnit);
if (distanceSquared > minDistance)
{
continue;
}
// если два врага находятся на одинаковом расстоянии, бежать к тому, у кого ХП меньше.
if (distanceSquared == minDistance && nearestEnemyUnit != null && nearestEnemyUnit.Health > testUnit.Health)
{
continue;
}
minDistance = distanceSquared;
nearestEnemyUnit = testUnit;
}
}
if (nearestEnemyUnit != null)
{
unit.Enemy = nearestEnemyUnit;
var moveVector = DistanceHelper.GetMoveTowardsPoint(unit, nearestEnemyUnit.X, nearestEnemyUnit.Y);
var cost = unit.GetMovementCost(moveVector, _world.Terrain[unit.X, unit.Y]);
if (unit.Power < cost)
{
return(StrategyResult.NotEnoughPower);
}
var x = unit.X + moveVector.X;
var y = unit.Y + moveVector.Y;
if (!_world.IsPointWithin(x, y))
{
return(StrategyResult.NotApplicable);
}
bool okToMove = false;
if (_world.Army.GetUnit(y, x) != null)
{
// Так, прямо по курсу какой-то хер, попробуем обойти.
foreach (var possibleWay in DistanceHelper.GetAdjancedDirectionVectors(moveVector))
{
cost = unit.GetMovementCost(possibleWay, _world.Terrain[unit.X, unit.Y]);
if (unit.Power < cost)
{
return(StrategyResult.NotEnoughPower);
}
x = unit.X + possibleWay.X;
y = unit.Y + possibleWay.Y;
if (_world.IsPointWithin(x, y) && _world.Army.GetUnit(y, x) == null)
{
okToMove = true;
break;
}
}
}
else
{
okToMove = true;
}
if (!okToMove)
{
return(StrategyResult.NotApplicable);
}
_world.MoveUnit(unit, y, x);
return(StrategyResult.Applied);
}
return(StrategyResult.NotApplicable);
}