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Added callback line of sight methods. Thanks xZise!

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This commit is contained in:
EvilSeph 2011-10-01 16:18:17 -04:00
parent 80c2bc266a
commit aaefd4ecb5
1 changed files with 40 additions and 0 deletions
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40
src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
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@ -18,6 +18,7 @@ import org.bukkit.entity.LivingEntity;
import org.bukkit.entity.Snowball; import org.bukkit.entity.Snowball;
import org.bukkit.entity.Vehicle; import org.bukkit.entity.Vehicle;
import org.bukkit.util.BlockIterator; import org.bukkit.util.BlockIterator;
import org.bukkit.util.Callback;
import java.util.List; import java.util.List;
import java.util.HashSet; import java.util.HashSet;
@ -86,6 +87,45 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
return getEyeHeight(); return getEyeHeight();
} }
private List<Block> getLineOfSight(Callback<Boolean, Block> callback, int maxDistance, int maxLength) {
if (maxDistance > 120) {
maxDistance = 120;
}
ArrayList<Block> blocks = new ArrayList<Block>(maxLength == 0 ? 10 : maxLength);
Iterator<Block> itr = new BlockIterator(this, maxDistance);
while (itr.hasNext()) {
Block block = itr.next();
if (maxLength != 0 && blocks.size() + 1 > maxLength) {
blocks.remove(0);
}
blocks.add(block);
if (callback == null) {
if (block.getTypeId() != 0) {
break;
}
} else {
Boolean result = callback.call(block);
if (result != null && !result) {
break;
}
}
}
return blocks;
}
public List<Block> getLineOfSight(Callback<Boolean, Block> callback, int maxDistance) {
return getLineOfSight(callback, maxDistance, 0);
}
public Block getTargetBlock(Callback<Boolean, Block> callback, int maxDistance) {
List<Block> blocks = getLineOfSight(callback, maxDistance, 1);
return blocks.get(0);
}
public List<Block> getLastTwoTargetBlocks(Callback<Boolean, Block> callback, int maxDistance) {
return getLineOfSight(callback, maxDistance, 2);
}
private List<Block> getLineOfSight(HashSet<Byte> transparent, int maxDistance, int maxLength) { private List<Block> getLineOfSight(HashSet<Byte> transparent, int maxDistance, int maxLength) {
if (maxDistance > 120) { if (maxDistance > 120) {
maxDistance = 120; maxDistance = 120;