/**
* Reverts the unit to the previous state, if possible.
*
* @return True if the reversion succeeds.
*/
public boolean revert() {
if (unit.isDisposed() || unit.getType() != type) return false;
if (unit.getLocation() != loc) {
unit.setLocation(loc);
}
if (unit.getWorkType() != work) {
unit.setWorkType(work);
}
if (unit.getRole() != role) { // Try to restore role equipment.
if (colony == null || unit.getColony() != colony) return false;
Set<EquipmentType> eq = new HashSet<EquipmentType>();
TypeCountMap<EquipmentType> unitEquipment = unit.getEquipment();
eq.addAll(equipment.keySet());
eq.addAll(unitEquipment.keySet());
// Give back first, avoiding incompatible equipment problems.
for (EquipmentType et : eq) {
int count = equipment.getCount(et) - unitEquipment.getCount(et);
if (count < 0) {
unit.changeEquipment(et, count);
colony.addEquipmentGoods(et, -count);
}
}
for (EquipmentType et : eq) {
int count = equipment.getCount(et) - unitEquipment.getCount(et);
if (count > 0 && colony.canProvideEquipment(et) && unit.canBeEquippedWith(et)) {
unit.changeEquipment(et, count);
colony.addEquipmentGoods(et, -count);
}
}
}
return unit.getRole() == role;
}
/** Fire any property changes resulting from actions of a unit. */
public void fireChanges() {
UnitType newType = null;
Unit.Role newRole = null;
Location newLoc = null;
GoodsType newWork = null;
int newWorkAmount = 0;
TypeCountMap<EquipmentType> newEquipment = null;
if (!unit.isDisposed()) {
newLoc = unit.getLocation();
if (colony != null) {
newType = unit.getType();
newRole = unit.getRole();
newWork = unit.getWorkType();
newWorkAmount = (newWork == null) ? 0 : getAmount(newLoc, newWork);
newEquipment = unit.getEquipment();
}
}
if (loc != newLoc) {
FreeColGameObject oldFcgo = (FreeColGameObject) loc;
oldFcgo.firePropertyChange(change(oldFcgo), unit, null);
if (newLoc != null) {
FreeColGameObject newFcgo = (FreeColGameObject) newLoc;
newFcgo.firePropertyChange(change(newFcgo), null, unit);
}
}
if (colony != null) {
if (type != newType && newType != null) {
String pc = ColonyChangeEvent.UNIT_TYPE_CHANGE.toString();
colony.firePropertyChange(pc, type, newType);
} else if (role != newRole && newRole != null) {
String pc = Tile.UNIT_CHANGE.toString();
colony.firePropertyChange(pc, role.toString(), newRole.toString());
}
if (work == newWork) {
if (work != null && workAmount != newWorkAmount) {
colony.firePropertyChange(work.getId(), workAmount, newWorkAmount);
}
} else {
if (work != null) {
colony.firePropertyChange(work.getId(), workAmount, 0);
}
if (newWork != null) {
colony.firePropertyChange(newWork.getId(), 0, newWorkAmount);
}
}
}
if (newEquipment != null) {
Set<EquipmentType> keys = new HashSet<EquipmentType>();
keys.addAll(equipment.keySet());
keys.addAll(newEquipment.keySet());
for (EquipmentType e : keys) {
int cOld = equipment.getCount(e);
int cNew = newEquipment.getCount(e);
if (cOld != cNew) {
unit.firePropertyChange(Unit.EQUIPMENT_CHANGE, cOld, cNew);
}
}
}
if (unit.getGoodsContainer() != null) {
unit.getGoodsContainer().fireChanges();
}
}
