I need move entity by use ArrayList int.

zlappedx3 · May 24, 2016

I create Entity and create EntityAI.

I create ArrayList position x z in list and do write read NBT.

entity.java

        public List<Integer> PositionX = new ArrayList<Integer>();
public List<Integer> PositionZ = new ArrayList<Integer>();

        @Override
        public void readEntityFromNBT(NBTTagCompound p_70037_1_){
        super.readEntityFromNBT(p_70037_1_);
        
        NBTTagList tagList = p_70037_1_.getTagList("Position", Constants.NBT.TAG_COMPOUND);
        
    for(int i = 0; i < tagList.tagCount(); i++){
    	
    	NBTTagCompound tag = tagList.getCompoundTagAt(i);
    	
    	int x = tag.getInteger("PositionX");
    	int z = tag.getInteger("PositionZ");
    	
    	PositionX.add(i, x);
    	PositionX.add(i, z);
    }
    }

    @Override
    public void writeEntityToNBT(NBTTagCompound p_70014_1_){
        super.writeEntityToNBT(p_70014_1_);
        
    NBTTagList tagList = new NBTTagList();
    
    for(int i = 0; i < PositionX.size(); i++){
    	
    	int x = PositionX.get(i);
    	int z = PositionZ.get(i);
    	
    	NBTTagCompound tag = new NBTTagCompound();
    	
    	tag.setInteger("PositionX", x);
    	tag.setInteger("PositionZ", z);
    	
    	tagList.appendTag(tag);
    }
    p_70014_1_.setTag("Position", tagList);
    }

in the AI i do it move position in list .get(0)

entityAI.java

     private EntitySoliderMelee entity;
     private int xPosition;
     private double yPosition;
     private int zPosition;
     private double speed;
    
     public AIMoveHuman(EntitySoliderMelee p_i1648_1_, double p_i1648_2_)
     {
         this.entity = p_i1648_1_;
         this.speed = p_i1648_2_;
         this.setMutexBits(1);
     }

     public boolean shouldExecute()
    {
    	this.xPosition = this.entity.PositionX.get(0);
        this.yPosition = this.entity.posY;
        this.zPosition = this.entity.PositionZ.get(0);
        
	return true;
    }

    public void startExecuting()
    {
        this.entity.getNavigator().tryMoveToXYZ(this.xPosition, this.yPosition, this.zPosition, this.speed);
    }

i try run and out game and new run it tell me.

[13:23:39] [server thread/ERROR]: Encountered an unexpected exception

net.minecraft.util.ReportedException: Ticking entity

at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:709) ~[MinecraftServer.class:?]

at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:614) ~[MinecraftServer.class:?]

at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:118) ~[integratedServer.class:?]

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:485) [MinecraftServer.class:?]

at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752) [MinecraftServer$2.class:?]

Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

at java.util.ArrayList.rangeCheck(Unknown Source) ~[?:1.7.0_79]

at java.util.ArrayList.get(Unknown Source) ~[?:1.7.0_79]

at OnerGamer.Entity.Solider.AIMoveHuman.shouldExecute(AIMoveHuman.java:33) ~[AIMoveHuman.class:?]

at net.minecraft.entity.ai.EntityAITasks.onUpdateTasks(EntityAITasks.java:84) ~[EntityAITasks.class:?]

at net.minecraft.entity.EntityLiving.updateAITasks(EntityLiving.java:613) ~[EntityLiving.class:?]

at net.minecraft.entity.EntityLivingBase.onLivingUpdate(EntityLivingBase.java:1983) ~[EntityLivingBase.class:?]

at net.minecraft.entity.EntityLiving.onLivingUpdate(EntityLiving.java:431) ~[EntityLiving.class:?]

at net.minecraft.entity.monster.EntityMob.onLivingUpdate(EntityMob.java:39) ~[EntityMob.class:?]

at net.minecraft.entity.EntityLivingBase.onUpdate(EntityLivingBase.java:1816) ~[EntityLivingBase.class:?]

at net.minecraft.entity.EntityLiving.onUpdate(EntityLiving.java:250) ~[EntityLiving.class:?]

at net.minecraft.entity.monster.EntityMob.onUpdate(EntityMob.java:47) ~[EntityMob.class:?]

at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2298) ~[World.class:?]

at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:684) ~[WorldServer.class:?]

at net.minecraft.world.World.updateEntity(World.java:2258) ~[World.class:?]

at net.minecraft.world.World.updateEntities(World.java:2108) ~[World.class:?]

at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:515) ~[WorldServer.class:?]

at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:703) ~[MinecraftServer.class:?]

... 4 more

[13:23:39] [server thread/ERROR]: This crash report has been saved to: D:\Project\minecraft\mcp\Moba\eclipse\.\crash-reports\crash-2016-05-24_13.23.39-server.txt

[13:23:39] [server thread/INFO]: Stopping server

[13:23:39] [server thread/INFO]: Saving players

[13:23:39] [server thread/INFO]: Saving worlds

[13:23:39] [server thread/INFO]: Saving chunks for level 'New World'/Overworld

[13:23:39] [Client thread/INFO] [sTDOUT]: [net.minecraft.client.Minecraft:displayCrashReport:388]: ---- Minecraft Crash Report ----

// Oh - I know what I did wrong!

Time: 5/24/16 1:23 PM

Description: Ticking entity

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

at java.util.ArrayList.rangeCheck(Unknown Source)

at java.util.ArrayList.get(Unknown Source)

at OnerGamer.Entity.Solider.AIMoveHuman.shouldExecute(AIMoveHuman.java:33)

at net.minecraft.entity.ai.EntityAITasks.onUpdateTasks(EntityAITasks.java:84)

at net.minecraft.entity.EntityLiving.updateAITasks(EntityLiving.java:613)

at net.minecraft.entity.EntityLivingBase.onLivingUpdate(EntityLivingBase.java:1983)

at net.minecraft.entity.EntityLiving.onLivingUpdate(EntityLiving.java:431)

at net.minecraft.entity.monster.EntityMob.onLivingUpdate(EntityMob.java:39)

at net.minecraft.entity.EntityLivingBase.onUpdate(EntityLivingBase.java:1816)

at net.minecraft.entity.EntityLiving.onUpdate(EntityLiving.java:250)

at net.minecraft.entity.monster.EntityMob.onUpdate(EntityMob.java:47)

at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2298)

at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:684)

at net.minecraft.world.World.updateEntity(World.java:2258)

at net.minecraft.world.World.updateEntities(World.java:2108)

at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:515)

at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:703)

at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:614)

at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:118)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:485)

at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752)

A detailed walkthrough of the error, its code path and all known details is as follows:

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-- Head --

Stacktrace: