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AttachCommand.java
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AttachCommand.java
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package com.denizenscript.denizen.scripts.commands.entity;
import com.denizenscript.denizen.objects.EntityTag;
import com.denizenscript.denizen.objects.LocationTag;
import com.denizenscript.denizen.objects.PlayerTag;
import com.denizenscript.denizen.utilities.debugging.Debug;
import com.denizenscript.denizen.utilities.entity.EntityAttachmentHelper;
import com.denizenscript.denizencore.exceptions.InvalidArgumentsException;
import com.denizenscript.denizencore.objects.Argument;
import com.denizenscript.denizencore.objects.ArgumentHelper;
import com.denizenscript.denizencore.objects.core.ElementTag;
import com.denizenscript.denizencore.objects.core.ListTag;
import com.denizenscript.denizencore.scripts.ScriptEntry;
import com.denizenscript.denizencore.scripts.commands.AbstractCommand;
import java.util.List;
import java.util.UUID;
import java.util.function.BiConsumer;
public class AttachCommand extends AbstractCommand {
public AttachCommand() {
setName("attach");
setSyntax("attach [<entity>|...] [to:<entity>/cancel] (offset:<offset>) (relative) (yaw_offset:<#.#>) (pitch_offset:<#.#>) (sync_server) (no_rotate/no_pitch) (for:<player>|...)");
setRequiredArguments(2, 9);
isProcedural = false;
}
// <--[command]
// @Name attach
// @Syntax attach [<entity>|...] [to:<entity>/cancel] (offset:<offset>) (relative) (yaw_offset:<#.#>) (pitch_offset:<#.#>) (sync_server) (no_rotate/no_pitch) (for:<player>|...)
// @Required 2
// @Maximum 9
// @Short Attaches a list of entities to another entity, for client-visible motion sync.
// @Group entity
//
// @Description
// Attaches a list of entities to another entity, for client-visible motion sync.
//
// You must specify the entity or list of entities to be attached.
// You must specify the entity that they will be attached to, or 'cancel' to end attachment.
//
// Optionally, specify an offset location vector to be a positional offset. This can include a yaw/pitch to offset those as well.
// Note that setting an offset of 0,0,0 will produce slightly different visual results from not setting any offset.
//
// Optionally, specify 'relative' to indicate that the offset vector should rotate with the target entity.
// If relative is used, optionally specify yaw_offset and/or pitch_offset to add an offset to rotation of the target entity when calculating the attachment offset.
//
// Optionally, specify 'for' with a player or list of players to only sync motion for those players.
// If unspecified, will sync for everyone.
//
// Optionally, specify 'sync_server' to keep the serverside position of the attached entities near the target entity.
// This can reduce some visual artifacts (such as entity unloading at distance), but may produce unintended functional artifacts.
// Note that you should generally only use 'sync_server' when you exclude the 'for' argument.
//
// Optionally specify 'no_rotate' to retain the attached entity's own rotation and ignore the target rotation.
// Optionally instead specify 'no_pitch' to retain the attached entity's own pitch, but use the target yaw.
//
// Note that attaches involving a player will not be properly visible to that player, but will still be visible to *other* players.
//
// It may be ideal to change setting "Packets.Auto init" in the Denizen config to "true" to guarantee this command functions as expected.
//
// @Tags
// <EntityTag.attached_entities[(<player>)]>
// <EntityTag.attached_to[(<player>)]>
// <EntityTag.attached_offset[(<player>)]>
//
// @Usage
// Use to attach random NPC to the air 3 blocks above a linked NPC.
// - attach <server.list_npcs.random> to:<npc> offset:0,3,0
// -->
@Override
public void parseArgs(ScriptEntry scriptEntry) throws InvalidArgumentsException {
for (Argument arg : scriptEntry) {
if (!scriptEntry.hasObject("to")
&& !scriptEntry.hasObject("cancel")
&& arg.matchesPrefix("to")
&& arg.matchesArgumentType(EntityTag.class)) {
scriptEntry.addObject("to", arg.asType(EntityTag.class));
}
else if (!scriptEntry.hasObject("cancel")
&& !scriptEntry.hasObject("to")
&& arg.matches("cancel")) {
scriptEntry.addObject("cancel", new ElementTag(true));
}
else if (!scriptEntry.hasObject("relative")
&& arg.matches("relative")) {
scriptEntry.addObject("relative", new ElementTag(true));
}
else if (!scriptEntry.hasObject("sync_server")
&& arg.matches("sync_server")) {
scriptEntry.addObject("sync_server", new ElementTag(true));
}
else if (!scriptEntry.hasObject("no_rotate")
&& arg.matches("no_rotate")) {
scriptEntry.addObject("no_rotate", new ElementTag(true));
}
else if (!scriptEntry.hasObject("no_pitch")
&& arg.matches("no_pitch")) {
scriptEntry.addObject("no_pitch", new ElementTag(true));
}
else if (!scriptEntry.hasObject("yaw_offset")
&& arg.matchesPrefix("yaw_offset")
&& arg.matchesFloat()) {
scriptEntry.addObject("yaw_offset", arg.asElement());
}
else if (!scriptEntry.hasObject("pitch_offset")
&& arg.matchesPrefix("pitch_offset")
&& arg.matchesFloat()) {
scriptEntry.addObject("pitch_offset", arg.asElement());
}
else if (!scriptEntry.hasObject("offset")
&& arg.matchesPrefix("offset")
&& arg.matchesArgumentType(LocationTag.class)) {
scriptEntry.addObject("offset", arg.asType(LocationTag.class));
}
else if (!scriptEntry.hasObject("for")
&& arg.matchesPrefix("for")
&& arg.matchesArgumentList(PlayerTag.class)) {
scriptEntry.addObject("for", arg.asType(ListTag.class).filter(PlayerTag.class, scriptEntry));
}
else if (!scriptEntry.hasObject("entities")
&& arg.matchesArgumentList(EntityTag.class)) {
scriptEntry.addObject("entities", arg.asType(ListTag.class).filter(EntityTag.class, scriptEntry));
}
else {
arg.reportUnhandled();
}
}
if (!scriptEntry.hasObject("entities")) {
throw new InvalidArgumentsException("Must specify attaching entities!");
}
if (!scriptEntry.hasObject("to") && !scriptEntry.hasObject("cancel")) {
throw new InvalidArgumentsException("Must specify a target entity, or 'cancel'!");
}
scriptEntry.defaultObject("cancel", new ElementTag(false));
scriptEntry.defaultObject("relative", new ElementTag(false));
scriptEntry.defaultObject("sync_server", new ElementTag(false));
scriptEntry.defaultObject("no_rotate", new ElementTag(false));
scriptEntry.defaultObject("no_pitch", new ElementTag(false));
scriptEntry.defaultObject("yaw_offset", new ElementTag(0f));
scriptEntry.defaultObject("pitch_offset", new ElementTag(0f));
}
@Override
public void execute(final ScriptEntry scriptEntry) {
LocationTag offset = scriptEntry.getObjectTag("offset");
List<EntityTag> entities = (List<EntityTag>) scriptEntry.getObject("entities");
EntityTag target = scriptEntry.getObjectTag("to");
List<PlayerTag> forPlayers = (List<PlayerTag>) scriptEntry.getObject("for");
ElementTag cancel = scriptEntry.getElement("cancel");
ElementTag relative = scriptEntry.getElement("relative");
ElementTag sync_server = scriptEntry.getElement("sync_server");
ElementTag no_rotate = scriptEntry.getElement("no_rotate");
ElementTag no_pitch = scriptEntry.getElement("no_pitch");
ElementTag yaw_offset = scriptEntry.getElement("yaw_offset");
ElementTag pitch_offset = scriptEntry.getElement("pitch_offset");
boolean shouldCancel = cancel.asBoolean();
if (scriptEntry.dbCallShouldDebug()) {
Debug.report(scriptEntry, getName(), db("entities", entities), (shouldCancel ? cancel.debug() : target.debug()), relative, offset,
yaw_offset, pitch_offset, sync_server, no_rotate, no_pitch, (forPlayers == null ? "" : db("for", forPlayers)));
}
BiConsumer<EntityTag, UUID> procPlayer = (entity, player) -> {
if (shouldCancel) {
EntityAttachmentHelper.removeAttachment(entity.getUUID(), player);
}
else {
EntityAttachmentHelper.AttachmentData attachment = new EntityAttachmentHelper.AttachmentData();
attachment.attached = entity;
attachment.to = target;
attachment.positionalOffset = offset == null ? null : offset.clone();
attachment.offsetRelative = relative.asBoolean();
attachment.yawAngleOffset = yaw_offset.asFloat();
attachment.pitchAngleOffset = pitch_offset.asFloat();
attachment.syncServer = sync_server.asBoolean();
attachment.forPlayer = player;
attachment.noRotate = no_rotate.asBoolean();
attachment.noPitch = no_pitch.asBoolean();
EntityAttachmentHelper.registerAttachment(attachment);
}
};
for (EntityTag entity : entities) {
if (!entity.isSpawned() && !entity.isFake && !shouldCancel) {
Debug.echoError("Cannot attach entity '" + entity + "': entity is not spawned.");
continue;
}
if (forPlayers == null) {
procPlayer.accept(entity, null);
}
else {
for (PlayerTag player : forPlayers) {
procPlayer.accept(entity, player.getUUID());
}
}
}
}
}