private TreeStatusEnum KeepExistingTarget()
{
if (!_turret.hasAttackTarget)
{
return(TreeStatusEnum.FAILURE);
}
if (!_turret.isAutoAttacking)
{
return(TreeStatusEnum.SUCCESS);
}
GameEntity target = _game.GetEntityWithID(_turret.attackTarget.targetID);
//target still alive?
if (target == null)
{
return(TreeStatusEnum.FAILURE);
}
if (target.health.value < 0)
{
return(TreeStatusEnum.FAILURE);
}
if (target.isKilled)
{
return(TreeStatusEnum.FAILURE);
}
//out of range?
int distance = _grid.DistanceBetween(_turret.location.cell, target.location.cell);
if (distance > _turret.weapon.range)
{
return(TreeStatusEnum.FAILURE);
}
return(TreeStatusEnum.SUCCESS);
}
void IExecuteSystem.Execute()
{
foreach (var unit in _attackingUnits.GetEntities())
{
GameEntity attackTarget = _game.GetEntityWithID(unit.attackTarget.targetID);
if (attackTarget == null)
{
unit.RemoveAttackTarget();
continue; //no more attacking; continue with next unit
}
//no friendly fire
if (unit.team.value == attackTarget.team.value)
{
unit.RemoveAttackTarget();
continue;
}
int nrCells = _grid.DistanceBetween(unit.location.cell, attackTarget.location.cell);
//out of range; don't shoot
if (nrCells > unit.weapon.range)
{
continue;
}
//not aimed; don't shoot
//if (!unit.isWeaponAimed) continue; // => this is enforced using GameMatcher
//still reloading; don't shoot
if (unit.hasFireWeapon && (unit.fireWeapon.time + 1 / unit.weapon.rateOfFire) > Time.time)
{
continue;
}
//we got here, we're ready to shoot
unit.ReplaceFireWeapon(Time.time);
}
}