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CitizensNavigator.java
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CitizensNavigator.java
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package net.citizensnpcs.npc.ai;
import java.util.Iterator;
import net.citizensnpcs.Settings.Setting;
import net.citizensnpcs.api.ai.EntityTarget;
import net.citizensnpcs.api.ai.Navigator;
import net.citizensnpcs.api.ai.NavigatorParameters;
import net.citizensnpcs.api.ai.StuckAction;
import net.citizensnpcs.api.ai.TargetType;
import net.citizensnpcs.api.ai.TeleportStuckAction;
import net.citizensnpcs.api.ai.event.CancelReason;
import net.citizensnpcs.api.ai.event.NavigationBeginEvent;
import net.citizensnpcs.api.ai.event.NavigationCancelEvent;
import net.citizensnpcs.api.ai.event.NavigationCompleteEvent;
import net.citizensnpcs.api.ai.event.NavigationReplaceEvent;
import net.citizensnpcs.api.ai.event.NavigationStuckEvent;
import net.citizensnpcs.api.ai.event.NavigatorCallback;
import net.citizensnpcs.api.astar.pathfinder.BlockExaminer;
import net.citizensnpcs.api.astar.pathfinder.BlockSource;
import net.citizensnpcs.api.astar.pathfinder.MinecraftBlockExaminer;
import net.citizensnpcs.api.astar.pathfinder.PathPoint;
import net.citizensnpcs.api.astar.pathfinder.PathPoint.PathCallback;
import net.citizensnpcs.api.npc.NPC;
import net.citizensnpcs.api.util.DataKey;
import net.citizensnpcs.util.NMS;
import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.entity.Entity;
import org.bukkit.entity.LivingEntity;
import org.bukkit.util.Vector;
public class CitizensNavigator implements Navigator, Runnable {
private final NavigatorParameters defaultParams = new NavigatorParameters().baseSpeed(UNINITIALISED_SPEED)
.range(Setting.DEFAULT_PATHFINDING_RANGE.asFloat())
.defaultAttackStrategy(MCTargetStrategy.DEFAULT_ATTACK_STRATEGY)
.attackRange(Setting.NPC_ATTACK_DISTANCE.asDouble())
.stationaryTicks(Setting.DEFAULT_STATIONARY_TICKS.asInt()).stuckAction(TeleportStuckAction.INSTANCE)
.examiner(new MinecraftBlockExaminer()).useNewPathfinder(Setting.USE_NEW_PATHFINDER.asBoolean());
private PathStrategy executing;
private int lastX, lastY, lastZ;
private NavigatorParameters localParams = defaultParams;
private final NPC npc;
private boolean paused;
private int stationaryTicks;
public CitizensNavigator(NPC npc) {
this.npc = npc;
if (Setting.NEW_PATHFINDER_OPENS_DOORS.asBoolean()) {
defaultParams.examiner(new DoorExaminer());
}
}
@Override
public void cancelNavigation() {
stopNavigating(CancelReason.PLUGIN);
}
@Override
public NavigatorParameters getDefaultParameters() {
return defaultParams;
}
@Override
public EntityTarget getEntityTarget() {
return executing instanceof EntityTarget ? (EntityTarget) executing : null;
}
@Override
public NavigatorParameters getLocalParameters() {
if (!isNavigating())
return defaultParams;
return localParams;
}
@Override
public NPC getNPC() {
return npc;
}
@Override
public Location getTargetAsLocation() {
return isNavigating() ? executing.getTargetAsLocation() : null;
}
@Override
public TargetType getTargetType() {
return isNavigating() ? executing.getTargetType() : null;
}
@Override
public boolean isNavigating() {
return executing != null;
}
@Override
public boolean isPaused() {
return paused;
}
public void load(DataKey root) {
defaultParams.range((float) root.getDouble("pathfindingrange", Setting.DEFAULT_PATHFINDING_RANGE.asFloat()));
defaultParams.stationaryTicks(root.getInt("stationaryticks", Setting.DEFAULT_STATIONARY_TICKS.asInt()));
defaultParams.speedModifier((float) root.getDouble("speedmodifier", 1F));
if (root.keyExists("avoidwater"))
defaultParams.avoidWater(root.getBoolean("avoidwater"));
if (!root.getBoolean("usedefaultstuckaction") && defaultParams.stuckAction() == TeleportStuckAction.INSTANCE)
defaultParams.stuckAction(null);
}
public void onDespawn() {
stopNavigating(CancelReason.NPC_DESPAWNED);
}
public void onSpawn() {
if (defaultParams.baseSpeed() == UNINITIALISED_SPEED) {
defaultParams.baseSpeed(NMS.getSpeedFor(npc));
}
updatePathfindingRange();
}
@Override
public void run() {
if (!isNavigating() || !npc.isSpawned() || paused)
return;
if (updateStationaryStatus())
return;
updatePathfindingRange();
boolean finished = executing.update();
if (!finished) {
return;
}
if (executing.getCancelReason() != null) {
stopNavigating(executing.getCancelReason());
} else {
NavigationCompleteEvent event = new NavigationCompleteEvent(this);
PathStrategy old = executing;
Bukkit.getPluginManager().callEvent(event);
if (old == executing) {
stopNavigating(null);
}
}
}
public void save(DataKey root) {
root.setDouble("pathfindingrange", defaultParams.range());
root.setInt("stationaryticks", defaultParams.stationaryTicks());
root.setDouble("speedmodifier", defaultParams.speedModifier());
root.setBoolean("avoidwater", defaultParams.avoidWater());
root.setBoolean("usedefaultstuckaction", defaultParams.stuckAction() == TeleportStuckAction.INSTANCE);
}
@Override
public void setPaused(boolean paused) {
this.paused = paused;
}
@Override
public void setTarget(Entity target, boolean aggressive) {
if (!npc.isSpawned())
throw new IllegalStateException("npc is not spawned");
if (target == null) {
cancelNavigation();
return;
}
switchParams();
updatePathfindingRange();
PathStrategy newStrategy = new MCTargetStrategy(npc, target, aggressive, localParams);
switchStrategyTo(newStrategy);
}
@Override
public void setTarget(LivingEntity target, boolean aggressive) {
setTarget((Entity) target, aggressive);
}
@Override
public void setTarget(Location target) {
if (!npc.isSpawned())
throw new IllegalStateException("npc is not spawned");
if (target == null) {
cancelNavigation();
return;
}
switchParams();
updatePathfindingRange();
PathStrategy newStrategy;
if (npc.isFlyable()) {
newStrategy = new FlyingAStarNavigationStrategy(npc, target, localParams);
} else if (localParams.useNewPathfinder() || !(npc.getEntity() instanceof LivingEntity)) {
newStrategy = new AStarNavigationStrategy(npc, target, localParams);
} else {
newStrategy = new MCNavigationStrategy(npc, target, localParams);
}
switchStrategyTo(newStrategy);
}
private void stopNavigating() {
if (executing != null) {
executing.stop();
}
executing = null;
localParams = defaultParams;
stationaryTicks = 0;
if (npc.isSpawned()) {
Vector velocity = npc.getEntity().getVelocity();
velocity.setX(0).setY(0).setZ(0);
npc.getEntity().setVelocity(velocity);
}
}
private void stopNavigating(CancelReason reason) {
if (!isNavigating())
return;
Iterator<NavigatorCallback> itr = localParams.callbacks().iterator();
while (itr.hasNext()) {
itr.next().onCompletion(reason);
itr.remove();
}
if (reason == null) {
stopNavigating();
return;
}
if (reason == CancelReason.STUCK) {
StuckAction action = localParams.stuckAction();
NavigationStuckEvent event = new NavigationStuckEvent(this, action);
Bukkit.getPluginManager().callEvent(event);
action = event.getAction();
boolean shouldContinue = action != null ? action.run(npc, this): false;
if (shouldContinue) {
stationaryTicks = 0;
executing.clearCancelReason();
return;
}
}
NavigationCancelEvent event = new NavigationCancelEvent(this, reason);
PathStrategy old = executing;
Bukkit.getPluginManager().callEvent(event);
if (old == executing) {
stopNavigating();
}
}
private void switchParams() {
localParams = defaultParams.clone();
}
private void switchStrategyTo(PathStrategy newStrategy) {
if (executing != null) {
Bukkit.getPluginManager().callEvent(new NavigationReplaceEvent(this));
}
executing = newStrategy;
stationaryTicks = 0;
if (npc.isSpawned()) {
NMS.updateNavigationWorld(npc.getEntity(), npc.getEntity().getWorld());
}
Bukkit.getPluginManager().callEvent(new NavigationBeginEvent(this));
}
private void updatePathfindingRange() {
NMS.updatePathfindingRange(npc, localParams.range());
}
private boolean updateStationaryStatus() {
if (localParams.stationaryTicks() < 0)
return false;
Location current = npc.getEntity().getLocation(STATIONARY_LOCATION);
if (current.getY() < -5) {
stopNavigating(CancelReason.STUCK);
return true;
}
if (lastX == current.getBlockX() && lastY == current.getBlockY() && lastZ == current.getBlockZ()) {
if (++stationaryTicks >= localParams.stationaryTicks()) {
stopNavigating(CancelReason.STUCK);
return true;
}
} else
stationaryTicks = 0;
lastX = current.getBlockX();
lastY = current.getBlockY();
lastZ = current.getBlockZ();
return false;
}
public static class DoorExaminer implements BlockExaminer {
@Override
public float getCost(BlockSource source, PathPoint point) {
return 0F;
}
@Override
public PassableState isPassable(BlockSource source, PathPoint point) {
Material in = source.getMaterialAt(point.getVector());
if (MinecraftBlockExaminer.isDoor(in)) {
point.addCallback(new DoorOpener());
return PassableState.PASSABLE;
}
return PassableState.IGNORE;
}
}
private static class DoorOpener implements PathCallback {
@Override
@SuppressWarnings("deprecation")
public void run(NPC npc, Block point, double radius) {
if (radius < 2) {
boolean bottom = (point.getData() & 8) == 0;
Block set = bottom ? point : point.getRelative(BlockFace.DOWN);
set.setData((byte) ((set.getData() & 7) | 4));
}
}
}
private static final Location STATIONARY_LOCATION = new Location(null, 0, 0, 0);
private static int UNINITIALISED_SPEED = Integer.MIN_VALUE;
}