Examples with EntityAccessor org.spongepowered.common.accessor.world.entity.EntityAccessor used on opensource projects

Example 6 with EntityAccessor

use of org.spongepowered.common.accessor.world.entity.EntityAccessor in project SpongeCommon by SpongePowered.

the class ServerGamePacketListenerImplMixin method impl$callMoveEntityEvent.

/**
 * Effectively, hooking into the following code block:
 * <pre>
 *       if (isMovePlayerPacketInvalid(packetIn)) {
 *          this.disconnect(new TranslationTextComponent("multiplayer.disconnect.invalid_player_movement"));
 *       } else {
 *          ServerWorld serverworld = this.server.world(this.player.dimension);
 *          if (!this.player.queuedEndExit) { // <---- Here is where we're injecting
 *             if (this.networkTickCount == 0) {
 *                this.captureCurrentPosition();
 *             }
 * </pre>
 * we can effectively short circuit the method to handle movement code where
 * returning {@code true} will escape the packet being processed further entirely and
 * {@code false} will allow the remaining processing of the method run.
 *
 * @param packetIn The movement packet
 */
@Inject(method = "handleMovePlayer", at = @At(value = "FIELD", opcode = Opcodes.GETFIELD, target = "Lnet/minecraft/server/network/ServerGamePacketListenerImpl;awaitingPositionFromClient:Lnet/minecraft/world/phys/Vec3;"), slice = @Slice(from = @At(value = "FIELD", target = "Lnet/minecraft/server/level/ServerPlayer;wonGame:Z"), to = @At(value = "FIELD", target = "Lnet/minecraft/server/network/ServerGamePacketListenerImpl;tickCount:I", ordinal = 1)), cancellable = true)
private void impl$callMoveEntityEvent(final ServerboundMovePlayerPacket packetIn, final CallbackInfo ci) {
    // If the movement is modified we pretend that the player has queuedEndExit = true
    // so that vanilla wont process that packet further
    final ServerboundMovePlayerPacketAccessor packetInAccessor = (ServerboundMovePlayerPacketAccessor) packetIn;
    // We don't fire an event to avoid confusing plugins.
    if (!packetInAccessor.accessor$hasPos() && !packetInAccessor.accessor$hasRot()) {
        return;
    }
    final boolean goodMovementPacket = this.receivedMovePacketCount - this.knownMovePacketCount <= 5;
    final boolean fireMoveEvent = goodMovementPacket && packetInAccessor.accessor$hasPos() && ShouldFire.MOVE_ENTITY_EVENT;
    final boolean fireRotationEvent = goodMovementPacket && packetInAccessor.accessor$hasRot() && ShouldFire.ROTATE_ENTITY_EVENT;
    final ServerPlayer player = (ServerPlayer) this.player;
    final Vector3d fromRotation = new Vector3d(this.player.yRot, this.player.xRot, 0);
    // Use the position of the last movement with an event or the current player position if never called
    // We need this because we ignore very small position changes as to not spam as many move events.
    final Vector3d fromPosition = player.position();
    Vector3d toPosition = new Vector3d(packetIn.getX(this.player.getX()), packetIn.getY(this.player.getY()), packetIn.getZ(this.player.getZ()));
    Vector3d toRotation = new Vector3d(packetIn.getYRot(this.player.yRot), packetIn.getXRot(this.player.xRot), 0);
    final boolean significantRotation = fromRotation.distanceSquared(toRotation) > (.15f * .15f);
    final Vector3d originalToPosition = toPosition;
    boolean cancelMovement = false;
    boolean cancelRotation = false;
    // Call move & rotate event as needed...
    if (fireMoveEvent) {
        final MoveEntityEvent event = SpongeEventFactory.createMoveEntityEvent(PhaseTracker.getCauseStackManager().currentCause(), (ServerPlayer) this.player, fromPosition, toPosition, toPosition);
        if (SpongeCommon.post(event)) {
            cancelMovement = true;
        } else {
            toPosition = event.destinationPosition();
        }
    }
    if (significantRotation && fireRotationEvent) {
        final RotateEntityEvent event = SpongeEventFactory.createRotateEntityEvent(PhaseTracker.getCauseStackManager().currentCause(), (ServerPlayer) this.player, fromRotation, toRotation);
        if (SpongeCommon.post(event)) {
            cancelRotation = true;
            toRotation = fromRotation;
        } else {
            toRotation = event.toRotation();
        }
    }
    // player position and update the player's relation in the chunk manager.
    if (cancelMovement) {
        if (fromPosition.distanceSquared(toPosition) > 0) {
            // Set the location, as if the player was teleporting
            this.awaitingTeleportTime = this.tickCount;
            this.shadow$teleport(fromPosition.x(), fromPosition.y(), fromPosition.z(), (float) toRotation.x(), (float) toRotation.y());
        } else {
            // If this is only rotation do not teleport back
            this.player.absMoveTo(fromPosition.x(), fromPosition.y(), fromPosition.z(), (float) toRotation.x(), (float) toRotation.y());
        }
        ci.cancel();
        return;
    }
    // Handle event results
    if (!toPosition.equals(originalToPosition)) {
        // Check if we have to say it's a "teleport" vs a standard move
        final double d4 = packetIn.getX(this.player.getX());
        final double d5 = packetIn.getY(this.player.getY());
        final double d6 = packetIn.getZ(this.player.getZ());
        final double d7 = d4 - this.firstGoodX;
        final double d8 = d5 - this.firstGoodY;
        final double d9 = d6 - this.firstGoodZ;
        final double d10 = this.player.getDeltaMovement().lengthSqr();
        final double d11 = d7 * d7 + d8 * d8 + d9 * d9;
        final float f2 = this.player.isFallFlying() ? 300.0F : 100.0F;
        final int i = this.receivedMovePacketCount - this.knownMovePacketCount;
        if (d11 - d10 > (double) (f2 * (float) i) && !this.shadow$isSingleplayerOwner()) {
            // At this point, we need to set the target position so the teleport code forces it
            this.awaitingPositionFromClient = VecHelper.toVanillaVector3d(toPosition);
            ((EntityAccessor) this.player).invoker$setRot((float) toRotation.x(), (float) toRotation.y());
            // And reset the position update so the force set is done.
            this.awaitingTeleportTime = this.tickCount - Constants.Networking.MAGIC_TRIGGER_TELEPORT_CONFIRM_DIFF;
        } else {
            // otherwise, set the data back onto the packet
            packetInAccessor.accessor$hasPos(true);
            packetInAccessor.accessor$x(toPosition.x());
            packetInAccessor.accessor$y(toPosition.y());
            packetInAccessor.accessor$z(toPosition.z());
        }
    }
}

Example 7 with EntityAccessor

use of org.spongepowered.common.accessor.world.entity.EntityAccessor in project SpongeCommon by SpongePowered.

the class CommandSourceStackMixin method impl$setCauseOnConstruction.

@Inject(method = CommandSourceStackMixin.PROTECTED_CTOR_METHOD, at = @At("RETURN"))
private void impl$setCauseOnConstruction(final CommandSource p_i49553_1_, final Vec3 p_i49553_2_, final Vec2 p_i49553_3_, final ServerLevel p_i49553_4_, final int p_i49553_5_, final String p_i49553_6_, final Component p_i49553_7_, final MinecraftServer p_i49553_8_, @Nullable final Entity p_i49553_9_, final boolean p_i49553_10_, final ResultConsumer<CommandSourceStack> p_i49553_11_, final EntityAnchorArgument.Anchor p_i49553_12_, final CallbackInfo ci) {
    this.impl$cause = PhaseTracker.getCauseStackManager().currentCause();
    final EventContext context = this.impl$cause.context();
    context.get(EventContextKeys.LOCATION).ifPresent(x -> {
        this.worldPosition = VecHelper.toVanillaVector3d(x.position());
        this.level = (ServerLevel) x.world();
    });
    context.get(EventContextKeys.ROTATION).ifPresent(x -> this.rotation = new Vec2((float) x.x(), (float) x.y()));
    context.get(EventContextKeys.SUBJECT).ifPresent(x -> {
        if (x instanceof EntityAccessor) {
            this.permissionLevel = ((EntityAccessor) x).invoker$getPermissionLevel();
        } else if (x instanceof MinecraftServer && !((MinecraftServer) x).isSingleplayer()) {
            this.permissionLevel = 4;
        }
    });
}