/**
* @author gabizou - February 7th, 2016
* <p>This will short circuit all other patches such that we control the entities being loaded
* by chunkloading and can throw our bulk entity event. This will bypass Forge's hook for
* individual entity events, but the SpongeModEventManager will still successfully throw the
* appropriate event and cancel the entities otherwise contained.
* @param entities The entities being loaded
* @param callbackInfo The callback info
*/
@Final
@Inject(method = "loadEntities", at = @At("HEAD"), cancellable = true)
private void spongeLoadEntities(
Collection<net.minecraft.entity.Entity> entities, CallbackInfo callbackInfo) {
if (entities.isEmpty()) {
// just return, no entities to load!
callbackInfo.cancel();
return;
}
List<Entity> entityList = new ArrayList<>();
ImmutableList.Builder<EntitySnapshot> snapshotBuilder = ImmutableList.builder();
for (net.minecraft.entity.Entity entity : entities) {
entityList.add((Entity) entity);
snapshotBuilder.add(((Entity) entity).createSnapshot());
}
SpawnCause cause = SpawnCause.builder().type(InternalSpawnTypes.CHUNK_LOAD).build();
List<NamedCause> causes = new ArrayList<>();
causes.add(NamedCause.source(cause));
causes.add(NamedCause.of("World", this));
SpawnEntityEvent.ChunkLoad chunkLoad =
SpongeEventFactory.createSpawnEntityEventChunkLoad(
Cause.of(causes), entityList, snapshotBuilder.build(), this);
SpongeImpl.postEvent(chunkLoad);
if (!chunkLoad.isCancelled()) {
for (Entity successful : chunkLoad.getEntities()) {
this.loadedEntityList.add((net.minecraft.entity.Entity) successful);
this.onEntityAdded((net.minecraft.entity.Entity) successful);
}
}
callbackInfo.cancel();
}
@Inject(method = "trySpawnGolem", at = @At("HEAD"), cancellable = true)
private void checkChunkBeforeTrySpawnGolem(World world, BlockPos pos, CallbackInfo callbackInfo) {
final Chunk chunk = world.getChunkFromBlockCoords(pos);
if (chunk == null || chunk.isEmpty() || !chunk.isTerrainPopulated()) {
callbackInfo.cancel();
}
}
@Inject(method = "playSoundAtEntity", at = @At("HEAD"), cancellable = true)
private void spongePlaySoundAtEntity(
net.minecraft.entity.Entity entity,
String name,
float volume,
float pitch,
CallbackInfo callbackInfo) {
if (((IMixinEntity) entity).isVanished()) {
callbackInfo.cancel();
}
}
@Inject(
method = "onCollideWithPlayer",
at =
@At(
value = "INVOKE",
target =
"Lnet/minecraft/entity/item/EntityItem;getEntityItem()Lnet/minecraft/item/ItemStack;"),
cancellable = true)
public void onPlayerItemPickup(EntityPlayer entityIn, CallbackInfo ci) {
if (!SpongeCommonEventFactory.callPlayerChangeInventoryPickupEvent(
entityIn, this.getEntityItem(), this.delayBeforeCanPickup)) {
ci.cancel();
}
}
/**
* @Author Zidane
*
* <p>Invoke before {@code System.arraycopy(packetIn.getLines(), 0, tileentitysign.signText, 0,
* 4);} (line 1156 in source) to call SignChangeEvent.
*
* @param packetIn Injected packet param
* @param ci Info to provide mixin on how to handle the callback
* @param worldserver Injected world param
* @param blockpos Injected blockpos param
* @param tileentity Injected tilentity param
* @param tileentitysign Injected tileentitysign param
*/
@Inject(
method = "processUpdateSign",
at =
@At(
value = "INVOKE",
target =
"Lnet/minecraft/network/play/client/C12PacketUpdateSign;getLines()[Lnet/minecraft/util/IChatComponent;"),
cancellable = true,
locals = LocalCapture.CAPTURE_FAILSOFT)
public void callSignChangeEvent(
C12PacketUpdateSign packetIn,
CallbackInfo ci,
WorldServer worldserver,
BlockPos blockpos,
TileEntity tileentity,
TileEntitySign tileentitysign) {
ci.cancel();
final Optional<SignData> existingSignData = ((Sign) tileentitysign).getData();
if (!existingSignData.isPresent()) {
// TODO Unsure if this is the best to do here...
throw new RuntimeException("Critical error! Sign data not present on sign!");
}
final SignData changedSignData = existingSignData.get().copy();
for (int i = 0; i < packetIn.getLines().length; i++) {
changedSignData.setLine(i, SpongeTexts.toText(packetIn.getLines()[i]));
}
// I pass changedSignData in here twice to emulate the fact that even-though the current sign
// data doesn't have the lines from the packet
// applied, this is what it "is" right now. If the data shown in the world is desired, it can be
// fetched from Sign.getData
final SignChangeEvent event =
SpongeEventFactory.createSignChange(
Sponge.getGame(),
new Cause(null, this.playerEntity, null),
(Sign) tileentitysign,
changedSignData,
changedSignData);
if (!Sponge.getGame().getEventManager().post(event)) {
((Sign) tileentitysign).offer(event.getNewData());
} else {
// If cancelled, I set the data back that was fetched from the sign. This means that if its a
// new sign, the sign will be empty else
// it will be the text of the sign that was showing in the world
((Sign) tileentitysign).offer(existingSignData.get());
}
tileentitysign.markDirty();
worldserver.markBlockForUpdate(blockpos);
}
@Inject(
method = "randomTick",
at = @At(value = "HEAD"),
locals = LocalCapture.CAPTURE_FAILEXCEPTION,
cancellable = true)
public void callRandomTickEvent(
World world, BlockPos pos, IBlockState state, Random rand, CallbackInfo ci) {
final BlockRandomTickEvent event =
SpongeEventFactory.createBlockRandomTick(
Sponge.getGame(),
null,
new Location<org.spongepowered.api.world.World>(
(org.spongepowered.api.world.World) world,
VecHelper.toVector(pos))); // TODO Fix null Cause
Sponge.getGame().getEventManager().post(event);
if (event.isCancelled()) {
ci.cancel();
}
}
@Inject(
method = "randomTick",
at = @At(value = "HEAD"),
locals = LocalCapture.CAPTURE_FAILEXCEPTION,
cancellable = true)
public void callRandomTickEvent(
net.minecraft.world.World world,
BlockPos pos,
IBlockState state,
Random rand,
CallbackInfo ci) {
BlockSnapshot blockSnapshot = ((World) world).createSnapshot(VecHelper.toVector(pos));
final TickBlockEvent event =
SpongeEventFactory.createTickBlockEvent(Cause.of(NamedCause.source(world)), blockSnapshot);
SpongeImpl.postEvent(event);
if (event.isCancelled()) {
ci.cancel();
}
}
@Inject(
method = "processPlayer",
at =
@At(
value = "FIELD",
target = "net.minecraft.network.NetHandlerPlayServer.hasMoved:Z",
ordinal = 2),
cancellable = true)
public void proccesPlayerMoved(C03PacketPlayer packetIn, CallbackInfo ci) {
if (packetIn.isMoving() || packetIn.getRotating() && !this.playerEntity.isDead) {
Player player = (Player) this.playerEntity;
Vector3d fromrot = player.getRotation();
// If Sponge used the player's current location, the delta might never be triggered which
// could be exploited
Location from = player.getLocation();
if (this.lastMoveLocation != null) {
from = this.lastMoveLocation;
}
Vector3d torot = new Vector3d(packetIn.getPitch(), packetIn.getYaw(), 0);
Location to =
new Location(
player.getWorld(),
packetIn.getPositionX(),
packetIn.getPositionY(),
packetIn.getPositionZ());
// Minecraft sends a 0, 0, 0 position when rotation only update occurs, this needs to be
// recognized and corrected
boolean rotationOnly = !packetIn.isMoving() && packetIn.getRotating();
if (rotationOnly) {
// Correct the to location so it's not misrepresented to plugins, only when player rotates
// without moving
// In this case it's only a rotation update, which isn't related to the to location
from = player.getLocation();
to = from;
}
// Minecraft does the same with rotation when it's only a positional update
boolean positionOnly = packetIn.isMoving() && !packetIn.getRotating();
if (positionOnly) {
// Correct the new rotation to match the old rotation
torot = fromrot;
}
double deltaSquared = to.getPosition().distanceSquared(from.getPosition());
double deltaAngleSquared = fromrot.distanceSquared(torot);
// These magic numbers are sad but help prevent excessive lag from this event.
// eventually it would be nice to not have them
if (deltaSquared > ((1f / 16) * (1f / 16)) || deltaAngleSquared > (.15f * .15f)) {
PlayerMoveEvent event =
SpongeEventFactory.createPlayerMove(Sponge.getGame(), player, from, to, torot);
Sponge.getGame().getEventManager().post(event);
if (event.isCancelled()) {
player.setLocationAndRotation(from, fromrot);
this.lastMoveLocation = from;
ci.cancel();
} else if (!event.getNewLocation().equals(to)) {
player.setLocationAndRotation(event.getNewLocation(), event.getRotation());
this.lastMoveLocation = event.getNewLocation();
ci.cancel();
} else if (!from.equals(player.getLocation()) && this.justTeleported) {
this.lastMoveLocation = player.getLocation();
// Prevent teleports during the move event from causing odd behaviors
this.justTeleported = false;
ci.cancel();
} else {
this.lastMoveLocation = event.getNewLocation();
}
}
}
}
/**
* @author zml
* <p>Purpose: replace the logic used for command blocks to make functional
* @param ci callback
* @param packetIn method param
*/
@Inject(
method = "processVanilla250Packet",
at =
@At(
value = "INVOKE",
shift = At.Shift.AFTER,
target =
"net/minecraft/network/PacketThreadUtil.checkThreadAndEnqueue(Lnet/minecraft/network/Packet;"
+ "Lnet/minecraft/network/INetHandler;Lnet/minecraft/util/IThreadListener;)V"),
cancellable = true)
public void processCommandBlock(C17PacketCustomPayload packetIn, CallbackInfo ci) {
if ("MC|AdvCdm".equals(packetIn.getChannelName())) {
PacketBuffer packetbuffer;
try {
if (!this.serverController.isCommandBlockEnabled()) {
this.playerEntity.addChatMessage(
new ChatComponentTranslation("advMode.notEnabled", new Object[0]));
// Sponge: Check permissions for command block usage TODO: Maybe throw an event instead?
// } else if (this.playerEntity.canCommandSenderUseCommand(2, "") &&
// this.playerEntity.capabilities.isCreativeMode) {
} else {
packetbuffer = packetIn.getBufferData();
try {
byte b0 = packetbuffer.readByte();
CommandBlockLogic commandblocklogic = null;
String permissionCheck = null; // Sponge
if (b0 == 0) {
TileEntity tileentity =
this.playerEntity.worldObj.getTileEntity(
new BlockPos(
packetbuffer.readInt(), packetbuffer.readInt(), packetbuffer.readInt()));
if (tileentity instanceof TileEntityCommandBlock) {
commandblocklogic = ((TileEntityCommandBlock) tileentity).getCommandBlockLogic();
permissionCheck =
"minecraft.commandblock.edit.block."
+ commandblocklogic.getCommandSenderName(); // Sponge
}
} else if (b0 == 1) {
Entity entity = this.playerEntity.worldObj.getEntityByID(packetbuffer.readInt());
if (entity instanceof EntityMinecartCommandBlock) {
commandblocklogic = ((EntityMinecartCommandBlock) entity).getCommandBlockLogic();
permissionCheck =
"minecraft.commandblock.edit.minecart."
+ commandblocklogic.getCommandSenderName(); // Sponge
}
// Sponge begin
} else {
throw new IllegalArgumentException("Unknown command block type!");
}
Player spongePlayer = ((Player) this.playerEntity);
if (permissionCheck == null || !spongePlayer.hasPermission(permissionCheck)) {
spongePlayer.sendMessage(
t("You do not have permission to edit this command block!")
.builder()
.color(TextColors.RED)
.build());
return;
// Sponge end
}
String s1 = packetbuffer.readStringFromBuffer(packetbuffer.readableBytes());
boolean flag = packetbuffer.readBoolean();
if (commandblocklogic != null) {
commandblocklogic.setCommand(s1);
commandblocklogic.setTrackOutput(flag);
if (!flag) {
commandblocklogic.setLastOutput((IChatComponent) null);
}
commandblocklogic.func_145756_e();
this.playerEntity.addChatMessage(
new ChatComponentTranslation("advMode.setCommand.success", new Object[] {s1}));
}
} catch (Exception exception1) {
logger.error("Couldn\'t set command block", exception1);
} finally {
packetbuffer.release();
}
/*} else { // Sponge: Give more accurate no permission message
this.playerEntity.addChatMessage(new ChatComponentTranslation("advMode.notAllowed", new Object[0]));*/
}
} finally {
ci.cancel();
}
}
}