/**
* Copyright (C) 2002-2012 The FreeCol Team
*
* This file is part of FreeCol.
*
* FreeCol is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* FreeCol is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with FreeCol. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.freecol.server.ai;
import java.util.Comparator;
public class CacheEntryComparator implements Comparator<ProductionCache.Entry> {
public int compareProduction(ProductionCache.Entry entry1, ProductionCache.Entry entry2) {
return entry2.getProduction() - entry1.getProduction();
}
public int compare(ProductionCache.Entry entry1, ProductionCache.Entry entry2) {
int production = compareProduction(entry1, entry2);
if (production != 0) {
return production;
} else if (entry1.isExpert()) {
if (entry2.isExpert()) {
return 0;
} else {
return -1;
}
} else if (entry2.isExpert()) {
return 1;
} else if (entry1.unitUpgradesToExpert()) {
if (entry2.unitUpgradesToExpert()) {
// both can be upgraded to expert: compare experience
return entry2.getUnit().getExperience()
- entry1.getUnit().getExperience();
} else {
return -1;
}
} else if (entry2.unitUpgradesToExpert()) {
return 1;
} else if (entry1.unitUpgrades()) {
if (entry2.unitUpgrades()) {
// both can be upgraded: compare wasted experience
return entry1.getUnit().getExperience()
- entry2.getUnit().getExperience();
} else {
return -1;
}
} else if (entry2.unitUpgrades()) {
return 1;
} else if (entry1.isOtherExpert()) {
if (entry2.isOtherExpert()) {
return 0;
} else {
// prefer non-experts
return 1;
}
} else if (entry2.isOtherExpert()) {
return -1;
} else {
return 0;
}
}
}