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[1.9] [SOLVED] Custom Entity Falling

Posted April 29, 20169 yr

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

Developer of Primeval Forest.

Quote

April 29, 20169 yr

Author

Reflection.

What's that?

Developer of Primeval Forest.

Quote

April 29, 20169 yr

Author

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?

Developer of Primeval Forest.

Quote

April 29, 20169 yr

setAccessible()

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable. If you think this is the case, JUST REPORT ME. Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

DO NOT PM ME WITH PROBLEMS. No help will be given.

Quote

April 29, 20169 yr

Author

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();
        }

Developer of Primeval Forest.

Quote

April 29, 20169 yr

Author

Thx. Now it's working.

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

Developer of Primeval Forest.

Quote

April 29, 20169 yr

Author

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

Developer of Primeval Forest.

Quote

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[1.9] [SOLVED] Custom Entity Falling

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