import cn.nukkit.network.protocol.SetEntityMotionPacket; //导入依赖的package包/类
@Override
public boolean setMotion(Vector3 motion) {
    if (super.setMotion(motion)) {
        if (this.chunk != null) {
            //this.getLevel().addEntityMotion(this.chunk.getX(), this.chunk.getZ(), this.getId(), this.motionX, this.motionY, this.motionZ);  //Send to others
            this.broadcastMotion();
            SetEntityMotionPacket pk = new SetEntityMotionPacket();
            pk.entityRuntimeId = this.id;
            pk.motionX = (float) motion.x;
            pk.motionY = (float) motion.y;
            pk.motionZ = (float) motion.z;
            this.dataPacket(pk);  //Send to self
        }

        if (this.motionY > 0) {
            //todo: check this
            this.startAirTicks = (int) ((-(Math.log(this.getGravity() / (this.getGravity() + this.getDrag() * this.motionY))) / this.getDrag()) * 2 + 5);
        }

        return true;
    }

    return false;
}
 

import cn.nukkit.network.protocol.SetEntityMotionPacket; //导入依赖的package包/类
public void addMotion(double motionX, double motionY, double motionZ) {
    int chunkX = this.getFloorX() >> 16;
    int chunkZ = this.getFloorZ() >> 16;
    SetEntityMotionPacket pk = new SetEntityMotionPacket();
    pk.eid = this.getId();
    pk.motionX = (float) motionX;
    pk.motionY = (float) motionY;
    pk.motionZ = (float) motionZ;
    this.level.addChunkPacket(chunkX, chunkZ, pk);
}
 

import cn.nukkit.network.protocol.SetEntityMotionPacket; //导入依赖的package包/类
public void addMotion(double motionX, double motionY, double motionZ) {
    int chunkX = this.getFloorX() >> 16;
    int chunkZ = this.getFloorZ() >> 16;
    SetEntityMotionPacket pk = new SetEntityMotionPacket();
    pk.entityRuntimeId = this.getId();
    pk.motionX = (float) motionX;
    pk.motionY = (float) motionY;
    pk.motionZ = (float) motionZ;
    this.level.addChunkPacket(chunkX, chunkZ, pk);
}
 

import cn.nukkit.network.protocol.SetEntityMotionPacket; //导入依赖的package包/类
protected void broadcastMotion(){
    SetEntityMotionPacket pk = new SetEntityMotionPacket();
    pk.entityRuntimeId = this.id;
    pk.motionX = (float) this.getMotion().x;
    pk.motionY = (float) this.getMotion().y;
    pk.motionZ = (float) this.getMotion().z;

    this.level.addChunkPacket(this.chunk.getX(), this.chunk.getZ(), pk);
}
 

import cn.nukkit.network.protocol.SetEntityMotionPacket; //导入依赖的package包/类
public void addEntityMotion(int chunkX, int chunkZ, long entityId, double x, double y, double z) {
    SetEntityMotionPacket pk = new SetEntityMotionPacket();
    pk.entityRuntimeId = entityId;
    pk.motionX = (float) x;
    pk.motionY = (float) y;
    pk.motionZ = (float) z;

    this.addChunkPacket(chunkX, chunkZ, pk);
}