package buildcraft.core.blueprints;
import java.util.Set;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.Multimap;
import buildcraft.api.blueprints.IBuilderContext;
import buildcraft.api.blueprints.SchematicBlock;
import buildcraft.api.core.BlockIndex;
import buildcraft.api.core.Position;
import buildcraft.core.builders.BuildingSlotBlock;
public class IndexRequirementMap {
private final Multimap<BlockIndex, BlockIndex> requirements = HashMultimap.create();
private final Multimap<BlockIndex, BlockIndex> requirementsInv = HashMultimap.create();
public IndexRequirementMap() {
}
public void add(BuildingSlotBlock b, IBuilderContext context) {
if (b.schematic instanceof SchematicBlock) {
BlockIndex index = new BlockIndex(b.x, b.y, b.z);
Set<BlockIndex> prereqs = ((SchematicBlock) b.schematic).getPrerequisiteBlocks(context);
if (prereqs != null && prereqs.size() > 0) {
Position min = context.surroundingBox().pMin();
Position max = context.surroundingBox().pMax();
for (BlockIndex i : prereqs) {
BlockIndex ia = new BlockIndex(i.x + index.x, i.y + index.y, i.z + index.z);
if (ia.equals(index) || ia.x < min.x || ia.y < min.y || ia.z < min.z || ia.x > max.x || ia.y > max.y || ia.z > max.z) {
continue;
}
requirements.put(index, ia);
requirementsInv.put(ia, index);
}
}
}
}
public boolean contains(BlockIndex index) {
return requirements.containsKey(index);
}
public void remove(BuildingSlotBlock b) {
BlockIndex index = new BlockIndex(b.x, b.y, b.z);
remove(index);
}
public void remove(BlockIndex index) {
for (BlockIndex reqingIndex : requirementsInv.get(index)) {
requirements.remove(reqingIndex, index);
}
requirementsInv.removeAll(index);
}
}