[1.9] [SOLVED] Custom Entity Falling

[Bektor]

Hi,

 

I have to make a custom EntityBlockFalling to allow it to do what I want it to do.

Now I've got a problem there:

 

I need access to the "private boolean canSetAsBlock;".

So how can I do this without creating my own value, because that would require to also implement the

writeNBTData and readNBTData and fall methods which I don't want because I don't need to modify there stuff

for my own falling entity.

 

My class extends from "EntityFallingBlock" and I'm using Minecraft Forge 1.9-12.16.0.1867.

 

Thx in advance.

Bektor

[Bektor]

  On 4/29/2016 at 4:06 PM, diesieben07 said:

Reflection.

What's that?

[Bektor]

So now I'm getting an error:

My code:

Field canSetAsBlockRef = EntityFallingBlock.class.getDeclaredField("canSetAsBlock");

      if(!canSetAsBlockRef.getBoolean(this)) {
[code]

Error:
[code]
java.lang.IllegalAccessException: Class minecraftplaye.primevalforest.common.entities.EntityModFallingBlock can not access a member of class net.minecraft.entity.item.EntityFallingBlock with modifiers "private"
[19:12:11] [server thread/INFO] [sTDERR]: [minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
[19:12:11] [server thread/INFO] [sTDERR]: [minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at java.lang.reflect.AccessibleObject.slowCheckMemberAccess(Unknown Source)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at java.lang.reflect.AccessibleObject.checkAccess(Unknown Source)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at java.lang.reflect.Field.getBoolean(Unknown Source)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at minecraftplaye.primevalforest.common.entities.EntityModFallingBlock.onUpdate(EntityModFallingBlock.java:78)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2085)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:871)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at net.minecraft.world.World.updateEntity(World.java:2051)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at net.minecraft.world.World.updateEntities(World.java:1882)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:645)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:779)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:683)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:155)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:532)
[minecraftplaye.primevalforest.common.entities.EntityModFallingBlock:onUpdate:116]: 	at java.lang.Thread.run(Unknown Source)

 

So what am I doing wrong?

[Draco18s]

setAccessible()

[Bektor]

Ok, thx.

 

Just a small question, where do I have to put all of this code in so that my field updates when the original value switches from false to true?

 

And can I make this code even better and smoother and more performant?

    private Field canSetAsBlockField;
    private boolean canSetAsBlockRef = false;

        try {
            this.canSetAsBlockField = EntityFallingBlock.class.getDeclaredField("canSetAsBlock");
        } catch (NoSuchFieldException | SecurityException e) {
            e.printStackTrace();
        }
        
        if(this.canSetAsBlockField == null)
            throw new NullPointerException();
        else
            this.canSetAsBlockField.setAccessible(true);
        
        try {
           this.canSetAsBlockRef =  this.canSetAsBlockField.getBoolean(this);
        } catch (IllegalArgumentException | IllegalAccessException e) {
            e.printStackTrace();
        }

[Bektor]

Thx. Now it's working.

 

Oh and I can't put it into a "final static" field becauce of the try-catch blog.

[Bektor]

Thx. With that code its working perfectly in static and final space.