diff --git a/paper-server/patches/sources/net/minecraft/world/level/pathfinder/Path.java.patch b/paper-server/patches/sources/net/minecraft/world/level/pathfinder/Path.java.patch new file mode 100644 index 0000000000..94eb8f4856 --- /dev/null +++ b/paper-server/patches/sources/net/minecraft/world/level/pathfinder/Path.java.patch @@ -0,0 +1,10 @@ +--- a/net/minecraft/world/level/pathfinder/Path.java ++++ b/net/minecraft/world/level/pathfinder/Path.java +@@ -18,6 +18,7 @@ + private final BlockPos target; + private final float distToTarget; + private final boolean reached; ++ public boolean hasNext() { return getNextNodeIndex() < this.nodes.size(); } // Paper - Mob Pathfinding API + + public Path(List nodes, BlockPos target, boolean reachesTarget) { + this.nodes = nodes; diff --git a/paper-server/src/main/java/com/destroystokyo/paper/entity/PaperPathfinder.java b/paper-server/src/main/java/com/destroystokyo/paper/entity/PaperPathfinder.java new file mode 100644 index 0000000000..946cbc9556 --- /dev/null +++ b/paper-server/src/main/java/com/destroystokyo/paper/entity/PaperPathfinder.java @@ -0,0 +1,148 @@ +package com.destroystokyo.paper.entity; + +import org.apache.commons.lang.Validate; +import org.bukkit.Location; +import org.bukkit.craftbukkit.entity.CraftLivingEntity; +import org.bukkit.entity.LivingEntity; +import org.bukkit.entity.Mob; +import javax.annotation.Nonnull; +import javax.annotation.Nullable; +import net.minecraft.world.level.pathfinder.Node; +import net.minecraft.world.level.pathfinder.Path; +import java.util.ArrayList; +import java.util.List; + +public class PaperPathfinder implements com.destroystokyo.paper.entity.Pathfinder { + + private net.minecraft.world.entity.Mob entity; + + public PaperPathfinder(net.minecraft.world.entity.Mob entity) { + this.entity = entity; + } + + @Override + public Mob getEntity() { + return (Mob) entity.getBukkitEntity(); + } + + public void setHandle(net.minecraft.world.entity.Mob entity) { + this.entity = entity; + } + + @Override + public void stopPathfinding() { + entity.getNavigation().stop(); + } + + @Override + public boolean hasPath() { + return entity.getNavigation().getPath() != null && !entity.getNavigation().getPath().isDone(); + } + + @Nullable + @Override + public PathResult getCurrentPath() { + Path path = entity.getNavigation().getPath(); + return path != null && !path.isDone() ? new PaperPathResult(path) : null; + } + + @Nullable + @Override + public PathResult findPath(Location loc) { + Validate.notNull(loc, "Location can not be null"); + Path path = entity.getNavigation().createPath(loc.getX(), loc.getY(), loc.getZ(), 0); + return path != null ? new PaperPathResult(path) : null; + } + + @Nullable + @Override + public PathResult findPath(LivingEntity target) { + Validate.notNull(target, "Target can not be null"); + Path path = entity.getNavigation().createPath(((CraftLivingEntity) target).getHandle(), 0); + return path != null ? new PaperPathResult(path) : null; + } + + @Override + public boolean moveTo(@Nonnull PathResult path, double speed) { + Validate.notNull(path, "PathResult can not be null"); + Path pathEntity = ((PaperPathResult) path).path; + return entity.getNavigation().moveTo(pathEntity, speed); + } + + @Override + public boolean canOpenDoors() { + return entity.getNavigation().pathFinder.nodeEvaluator.canOpenDoors(); + } + + @Override + public void setCanOpenDoors(boolean canOpenDoors) { + entity.getNavigation().pathFinder.nodeEvaluator.setCanOpenDoors(canOpenDoors); + } + + @Override + public boolean canPassDoors() { + return entity.getNavigation().pathFinder.nodeEvaluator.canPassDoors(); + } + + @Override + public void setCanPassDoors(boolean canPassDoors) { + entity.getNavigation().pathFinder.nodeEvaluator.setCanPassDoors(canPassDoors); + } + + @Override + public boolean canFloat() { + return entity.getNavigation().pathFinder.nodeEvaluator.canFloat(); + } + + @Override + public void setCanFloat(boolean canFloat) { + entity.getNavigation().pathFinder.nodeEvaluator.setCanFloat(canFloat); + } + + public class PaperPathResult implements com.destroystokyo.paper.entity.PaperPathfinder.PathResult { + + private final Path path; + PaperPathResult(Path path) { + this.path = path; + } + + @Nullable + @Override + public Location getFinalPoint() { + Node point = path.getEndNode(); + return point != null ? toLoc(point) : null; + } + + @Override + public boolean canReachFinalPoint() { + return path.canReach(); + } + + @Override + public List getPoints() { + List points = new ArrayList<>(); + for (Node point : path.nodes) { + points.add(toLoc(point)); + } + return points; + } + + @Override + public int getNextPointIndex() { + return path.getNextNodeIndex(); + } + + @Nullable + @Override + public Location getNextPoint() { + if (!path.hasNext()) { + return null; + } + return toLoc(path.nodes.get(path.getNextNodeIndex())); + } + } + + private Location toLoc(Node point) { + return new Location(entity.level().getWorld(), point.x, point.y, point.z); + } +} diff --git a/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java b/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java index 31f7b19b89..26c9bc53fe 100644 --- a/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java +++ b/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java @@ -14,8 +14,11 @@ import org.bukkit.loot.LootTable; public abstract class CraftMob extends CraftLivingEntity implements Mob { public CraftMob(CraftServer server, net.minecraft.world.entity.Mob entity) { super(server, entity); + paperPathfinder = new com.destroystokyo.paper.entity.PaperPathfinder(entity); // Paper - Mob Pathfinding API } + private final com.destroystokyo.paper.entity.PaperPathfinder paperPathfinder; // Paper - Mob Pathfinding API + @Override public com.destroystokyo.paper.entity.Pathfinder getPathfinder() { return paperPathfinder; } // Paper - Mob Pathfinding API @Override public void setTarget(LivingEntity target) { Preconditions.checkState(!this.getHandle().generation, "Cannot set target during world generation"); @@ -56,6 +59,14 @@ public abstract class CraftMob extends CraftLivingEntity implements Mob { return (net.minecraft.world.entity.Mob) this.entity; } + // Paper start - Mob Pathfinding API + @Override + public void setHandle(net.minecraft.world.entity.Entity entity) { + super.setHandle(entity); + paperPathfinder.setHandle(getHandle()); + } + // Paper end - Mob Pathfinding API + @Override public String toString() { return "CraftMob";