NoCheatPlus/NCPCore/src/main/java/fr/neatmonster/nocheatplus/utilities/map/WrapBlockCache.java

78 lines
2.5 KiB
Java

/*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package fr.neatmonster.nocheatplus.utilities.map;
import fr.neatmonster.nocheatplus.NCPAPIProvider;
import fr.neatmonster.nocheatplus.compat.MCAccess;
import fr.neatmonster.nocheatplus.components.map.IWrapBlockCache;
import fr.neatmonster.nocheatplus.components.registry.event.IGenericInstanceHandle;
/**
* Wrap a BlockCache instance, and ensure on getting, that it is the latest
* registered implementation. Default implementation returned with the
* NoCheatPlusAPI. This might keep references to previously used
* implementations, which could leak memory.
*
* @author asofold
*
*/
public class WrapBlockCache implements IWrapBlockCache {
private final IGenericInstanceHandle<MCAccess> mcAccess;
private MCAccess lastMCAccess;
private BlockCache blockCache;
public WrapBlockCache() {
this(NCPAPIProvider.getNoCheatPlusAPI().getGenericInstanceHandle(MCAccess.class));
}
public WrapBlockCache(IGenericInstanceHandle<MCAccess> mcAccess) {
this.mcAccess = mcAccess;
lastMCAccess = mcAccess == null ? null : mcAccess.getHandle();
blockCache = mcAccess == null ? null : lastMCAccess.getBlockCache();
}
private BlockCache getInstance() {
if (lastMCAccess == mcAccess.getHandle()) {
return blockCache;
}
else {
lastMCAccess = mcAccess.getHandle();
// TODO: This would make an initialized block cache uninitialized.
blockCache = lastMCAccess.getBlockCache();
return blockCache;
}
}
@Override
public BlockCache getBlockCache() {
return getInstance();
}
@Override
public BlockCache getHandle() {
return getInstance();
}
@Override
public void cleanup() {
if (blockCache != null) {
blockCache.cleanup();
}
}
}