Blocks de portail

robin4002

J’ai posté une réponse qui est resté inaperçu :
@‘robin4002’:

Je vois pas de problème en rapport avec ton histoire de portail.
En revanche fait attention, celle classe peut déclencher un NPE …
Normalement tu mets TaClassePrincipale.nomDuBloc et voila.

bin4r1s

A désolé je n’avais pas vu.
Le rapport avec le portail c’est que c’est la classe du bloc ‘structure/container’ du portail.

Je ne comprends plus rien : avec deux classes différentes possédant le même code un bloc sur les deux marche…

Diangle

Je ne comprend pas ton problème xD.

robin4002

Envoie tout tes codes en rapport avec le portail.

bin4r1s

Classe principale (Dragons.java) :

fire_stone = (new BlockDragonsMod(this.fire_stone, Material.rock)).setHardness(20.0F).setResistance(2000.0F).setStepSound(Block.soundTypeStone).setBlockName("fire_stone").setBlockTextureName("dragons:fire_stone");
GameRegistry.registerBlock(fire_stone, "fire_stone");

IDimBlockPortal.java (non, ce n’est pas une interface (I = Ice))

package fr.MrBlockTNT.Dragons.dimension.ice;

import java.util.Random;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.init.Blocks;
import net.minecraft.item.ItemStack;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.world.IBlockAccess;
import net.minecraft.world.World;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import fr.MrBlockTNT.Dragons.block.BlockBase;
import fr.MrBlockTNT.Dragons.core.Dragons;

public class IDimBlockPortal extends BlockBase
{
    public static Block portalMaterial = Dragons.fire_stone;

    public IDimBlockPortal()
    {
        super(Material.portal);
        this.setTickRandomly(true);
        this.setStepSound(Block.soundTypeGlass);
        this.setLightLevel(0.75F);
    }

    @Override
    public void setBlockBoundsBasedOnState(IBlockAccess blockaccess, int x, int y, int z)
    {
        float f;
        float f1;

        if(!blockaccess.getBlock(x - 1, y, z).equals(this) && !blockaccess.getBlock(x + 1, y, z).equals(this))
        {
            f = 0.125F;
            f1 = 0.5F;
            this.setBlockBounds(0.5F - f, 0.0F, 0.5F - f1, 0.5F + f, 1.0F, 0.5F + f1);
        }
        else
        {
            f = 0.5F;
            f1 = 0.125F;
            this.setBlockBounds(0.5F - f, 0.0F, 0.5F - f1, 0.5F + f, 1.0F, 0.5F + f1);
        }
    }

    @Override
    public void setBlockBoundsForItemRender()
    {
        float f1 = 0.125F;
        this.setBlockBounds(0, 0.0F, 0.5F - f1, 1F, 1.0F, 0.5F + f1);
    }

    @Override
    public AxisAlignedBB getCollisionBoundingBoxFromPool(World world, int x, int y, int z)
    {
        return null;
    }

@Override
public void onNeighborBlockChange(World world, int x, int y, int z, Block block)
{
int y2 = y;
while(world.getBlock(x, y2, z).equals(this))
{
y2–;
}
if(!world.getBlock(x, y2, z).equals(this.portalMaterial))
{
world.setBlockToAir(x, y, z);
}
int y3 = y2 + 1;
boolean portalIsGood = false;
if(world.getBlock(x, y3, z + 1).equals(this))
{
portalIsGood = (world.getBlock(x, y2, z).equals(this.portalMaterial) && world.getBlock(x, y2, z + 1).equals(this.portalMaterial) && world.getBlock(x, y2 + 1, z + 2).equals(this.portalMaterial) && world.getBlock(x, y2 + 2, z + 2).equals(this.portalMaterial) && world.getBlock(x, y2 + 3, z + 2).equals(this.portalMaterial) && world.getBlock(x, y2 + 1, z - 1).equals(this.portalMaterial) && world.getBlock(x, y2 + 2, z - 1).equals(this.portalMaterial) && world.getBlock(x, y2 + 3, z - 1).equals(this.portalMaterial) && world.getBlock(x, y2 + 4, z - 1).equals(this.portalMaterial) && world.getBlock(x, y2 + 4, z).equals(this.portalMaterial));
}
else if(world.getBlock(x, y3, z - 1).equals(this))
{
portalIsGood = (world.getBlock(x, y2, z).equals(this.portalMaterial) && world.getBlock(x, y2, z - 1).equals(this.portalMaterial) && world.getBlock(x, y2 + 1, z - 2).equals(this.portalMaterial) && world.getBlock(x, y2 + 2, z - 2).equals(this.portalMaterial) && world.getBlock(x, y2 + 3, z - 2).equals(this.portalMaterial) && world.getBlock(x, y2 + 1, z + 1).equals(this.portalMaterial) && world.getBlock(x, y2 + 2, z + 1).equals(this.portalMaterial) && world.getBlock(x, y2 + 3, z + 1).equals(this.portalMaterial) && world.getBlock(x, y2 + 4, z + 1).equals(this.portalMaterial) && world.getBlock(x, y2 + 4, z).equals(this.portalMaterial));
}
else if(world.getBlock(x + 1, y3, z).equals(this))
{
portalIsGood = (world.getBlock(x, y2, z).equals(this.portalMaterial) && world.getBlock(x + 1, y2, z).equals(this.portalMaterial) && world.getBlock(x + 2, y2 + 1, z).equals(this.portalMaterial) && world.getBlock(x + 2, y2 + 2, z).equals(this.portalMaterial) && world.getBlock(x + 2, y2 + 3, z).equals(this.portalMaterial) && world.getBlock(x - 1, y2 + 1, z).equals(this.portalMaterial) && world.getBlock(x - 1, y2 + 2, z).equals(this.portalMaterial) && world.getBlock(x - 1, y2 + 3, z).equals(this.portalMaterial) && world.getBlock(x + 1, y2 + 4, z).equals(this.portalMaterial) && world.getBlock(x, y2 + 4, z).equals(this.portalMaterial));
}
else if(world.getBlock(x - 1, y3, z).equals(this))
{
portalIsGood = (world.getBlock(x, y2, z).equals(this.portalMaterial) && world.getBlock(x - 1, y2, z).equals(this.portalMaterial) && world.getBlock(x - 2, y2 + 1, z).equals(this.portalMaterial) && world.getBlock(x - 2, y2 + 2, z).equals(this.portalMaterial) && world.getBlock(x - 2, y2 + 3, z).equals(this.portalMaterial) && world.getBlock(x + 1, y2 + 1, z).equals(this.portalMaterial) && world.getBlock(x + 1, y2 + 2, z).equals(this.portalMaterial) && world.getBlock(x + 1, y2 + 3, z).equals(this.portalMaterial) && world.getBlock(x + 1, y2 + 4, z).equals(this.portalMaterial) && world.getBlock(x, y2 + 4, z).equals(this.portalMaterial));
}

if(!portalIsGood)
{
world.setBlockToAir(x, y, z);
}
}

    @Override
    public boolean isOpaqueCube()
    {
        return false;
    }

    @Override
    public boolean renderAsNormalBlock()
    {
        return false;
    }

    @Override
    public int quantityDropped(Random random)
    {
        return 0;
    }

    @Override
    public void onEntityCollidedWithBlock(World world, int x, int y, int z, Entity entity)
    {
        if((entity.ridingEntity == null) && (entity.riddenByEntity == null))
        {
            if(entity.dimension != Dragons.dimensionIdIce)
            {
                if(entity instanceof EntityPlayerMP)
                {
                    EntityPlayerMP player = (EntityPlayerMP)entity;
                    if(player.timeUntilPortal > 0)
                    {
                        player.timeUntilPortal = 10;
                    }
                    else
                    {
                        player.timeUntilPortal = 10;
                        player.mcServer.getConfigurationManager().transferPlayerToDimension(player, Dragons.dimensionIdIce, new IDimTeleporter(player.mcServer.worldServerForDimension(Dragons.dimensionIdIce)));
                    }
                }
                else
                {
                    EntityTeleporter.teleportToDim(entity, Dragons.dimensionIdIce);
                }
            }
            else
            {
                if(entity instanceof EntityPlayerMP)
                {
                    EntityPlayerMP player = (EntityPlayerMP)entity;
                    if(player.timeUntilPortal > 0)
                    {
                        player.timeUntilPortal = 10;
                    }
                    else
                    {
                        player.timeUntilPortal = 10;
                        player.mcServer.getConfigurationManager().transferPlayerToDimension(player, 0, new IDimTeleporter(player.mcServer.worldServerForDimension(0)));
                    }
                }
                else
                {
                    EntityTeleporter.teleportToDim(entity, 0);
                }
            }
        }

    }

    @SideOnly(Side.CLIENT)
    @Override
    public int getRenderBlockPass()
    {
        return 1;
    }

    @SideOnly(Side.CLIENT)
    @Override
    public ItemStack getPickBlock(MovingObjectPosition target, World world, int x, int y, int z)
    {
        return null;
    }

    @Override
    public void breakBlock(World world, int x, int y, int z, Block block, int metadata)
    {
        super.breakBlock(world, x, y, z, block, metadata);
        if(world.getBlock(x, y + 1, z).equals(this))
        {
            world.setBlockToAir(x, y + 1, z);
        }
        if(world.getBlock(x, y - 1, z).equals(this))
        {
            world.setBlockToAir(x, y - 1, z);
        }
        if(world.getBlock(x + 1, y, z).equals(this))
        {
            world.setBlockToAir(x + 1, y, z);
        }
        if(world.getBlock(x - 1, y, z).equals(this))
        {
            world.setBlockToAir(x - 1, y, z);
        }
        if(world.getBlock(x, y, z + 1).equals(this))
        {
            world.setBlockToAir(x, y, z + 1);
        }
        if(world.getBlock(x, y, z - 1).equals(this))
        {
            world.setBlockToAir(x, y, z - 1);
        }
    }
}

robin4002

Heu ? Je ne vois pas où est le problème, ça devrait très bien fonctionner non ?

bin4r1s

Et bien apparemment non

Code de l’activateur ? :
ItemIcePortalOpener.java :

package fr.MrBlockTNT.Dragons.item;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;
import fr.MrBlockTNT.Dragons.core.Dragons;
import fr.MrBlockTNT.Dragons.dimension.ice.IDimBlockPortal;

public class ItemIcePortalOpener extends Item
{
    public ItemIcePortalOpener()
    {
        super();
    }

    public boolean onItemUse(ItemStack stack, EntityPlayer player, World par3World, int x, int y, int z, int side, float hitX, float hitY, float hitZ)
    {
        if(!par3World.isRemote && par3World.getBlock(x, y, z).equals(IDimBlockPortal.portalMaterial))
        {
            if(par3World.getBlock(x, y, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x - 1, y, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x - 2, y + 1, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x - 2, y + 2, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x - 2, y + 3, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x + 1, y + 1, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x + 1, y + 2, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x + 1, y + 3, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x - 1, y + 4, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 4, z).equals(IDimBlockPortal.portalMaterial))
            {
                for(int i = 0; i < 3; i++)
                {
                    par3World.setBlock(x, y + 1 + i, z, Dragons.ice_portal);
                    par3World.setBlock(x - 1, y + 1 + i, z, Dragons.ice_portal);
                }
                if(!player.capabilities.isCreativeMode)
                {
                    stack.stackSize–;
                }
                return true;
            }

            if(par3World.getBlock(x, y, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x + 1, y, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x + 2, y + 1, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x + 2, y + 2, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x + 2, y + 3, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x - 1, y + 1, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x - 1, y + 2, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x - 1, y + 3, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x + 1, y + 4, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 4, z).equals(IDimBlockPortal.portalMaterial))
            {
                for(int i = 0; i < 3; i++)
                {
                    par3World.setBlock(x, y + 1 + i, z, Dragons.ice_portal);
                    par3World.setBlock(x + 1, y + 1 + i, z, Dragons.ice_portal);
                }
                if(!player.capabilities.isCreativeMode)
                {
                    stack.stackSize--;
                }
                return true;
            }

            if(par3World.getBlock(x, y, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y, z - 1).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 1, z - 2).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 2, z - 2).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 3, z - 2).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 1, z + 1).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 2, z + 1).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 3, z + 1).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 4, z - 1).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 4, z).equals(IDimBlockPortal.portalMaterial))
            {
                for(int i = 0; i < 3; i++)
                {
                    par3World.setBlock(x, y + 1 + i, z, Dragons.ice_portal);
                    par3World.setBlock(x, y + 1 + i, z - 1, Dragons.ice_portal);
                }
                if(!player.capabilities.isCreativeMode)
                {
                    stack.stackSize--;
                }
                return true;
            }

            if(par3World.getBlock(x, y, z).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y, z + 1).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 1, z + 2).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 2, z + 2).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 3, z + 2).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 1, z - 1).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 2, z - 1).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 3, z - 1).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 4, z + 1).equals(IDimBlockPortal.portalMaterial) && par3World.getBlock(x, y + 4, z).equals(IDimBlockPortal.portalMaterial))
            {
                for(int i = 0; i < 3; i++)
                {
                    par3World.setBlock(x, y + 1 + i, z, Dragons.ice_portal);
                    par3World.setBlock(x, y + 1 + i, z + 1, Dragons.ice_portal);
                }
                if(!player.capabilities.isCreativeMode)
                {
                    stack.stackSize--;
                }
                return true;
            }
        }
        if(par3World.isRemote)
        {
            par3World.spawnParticle("largesmoke", x, y, z, hitX, hitY, hitZ);
        }
        return false;
    }
}

robin4002

Dans le constructeur de la classe IDimBlockPortal, ajoutes :
System.out.println(portalMaterial.getUnlocalizedName());

ça t’affiche son nom dans la console ou le jeu crash avec un NPE ?

bin4r1s

Ah ! NPE !

Comment le solutionner ?

[12:26:01] [Client thread/ERROR] [FML]: Caught exception from Dragons
java.lang.NullPointerException
at fr.MrBlockTNT.Dragons.dimension.ice.IDimBlockPortal.<init>(IDimBlockPortal.java:30) ~[IDimBlockPortal.class:?]
at fr.MrBlockTNT.Dragons.core.Dragons.PreInit(Dragons.java:137) ~[Dragons.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_11]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_11]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_11]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_11]
at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:513) ~[FMLModContainer.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_11]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_11]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_11]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_11]
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74) ~[guava-15.0.jar:?]
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47) ~[guava-15.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314) ~[guava-15.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296) ~[guava-15.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:267) ~[guava-15.0.jar:?]
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208) ~[LoadController.class:?]
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187) ~[LoadController.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_11]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_11]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_11]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_11]
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74) ~[guava-15.0.jar:?]
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47) ~[guava-15.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314) ~[guava-15.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296) ~[guava-15.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:267) ~[guava-15.0.jar:?]
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118) [LoadController.class:?]
at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:512) [Loader.class:?]
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:239) [FMLClientHandler.class:?]
at net.minecraft.client.Minecraft.startGame(Minecraft.java:522) [Minecraft.class:?]
at net.minecraft.client.Minecraft.run(Minecraft.java:892) [Minecraft.class:?]
at net.minecraft.client.main.Main.main(Main.java:112) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_11]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_11]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_11]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_11]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?]
–-- Minecraft Crash Report ----
// Who set us up the TNT?

Time: 30/08/14 12:26
Description: Initializing game

java.lang.NullPointerException: Initializing game
at fr.MrBlockTNT.Dragons.dimension.ice.IDimBlockPortal.<init>(IDimBlockPortal.java:30)
at fr.MrBlockTNT.Dragons.core.Dragons.PreInit(Dragons.java:137)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:513)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:512)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:239)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:522)
at net.minecraft.client.Minecraft.run(Minecraft.java:892)
at net.minecraft.client.main.Main.main(Main.java:112)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Stacktrace:
at fr.MrBlockTNT.Dragons.dimension.ice.IDimBlockPortal.<init>(IDimBlockPortal.java:30)
at fr.MrBlockTNT.Dragons.core.Dragons.PreInit(Dragons.java:137)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:513)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:512)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:239)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:522)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.run(Minecraft.java:892)
at net.minecraft.client.main.Main.main(Main.java:112)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows Vista (x86) version 6.0
Java Version: 1.8.0_11, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 789954048 bytes (753 MB) / 1046937600 bytes (998 MB) up to 1046937600 bytes (998 MB)
JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v9.03 FML v7.2.211.1121 Minecraft Forge 10.12.2.1121 4 mods loaded, 4 mods active
mcp{9.03} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized
FML{7.2.211.1121} [Forge Mod Loader] (forgeSrc-1.7.2-10.12.2.1121.jar) Unloaded->Constructed->Pre-initialized
Forge{10.12.2.1121} [Minecraft Forge] (forgeSrc-1.7.2-10.12.2.1121.jar) Unloaded->Constructed->Pre-initialized
Dragons{1.0.0} [More Dungeons and Dragons - pre-alpha] (bin) Unloaded->Constructed->Errored
Launched Version: 1.6
LWJGL: 2.9.0
OpenGL: GeForce 9300 GE/PCIe/SSE2/3DNOW! GL version 3.3.0, NVIDIA Corporation
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: ~~ERROR~~ NullPointerException: null
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
Anisotropic Filtering: Off (1)
#@!@# Game crashed! Crash report saved to: #@!@# C:\Minecraft\More Dragons 1.7.2\mod\forge\eclipse\.\crash-reports\crash-2014-08-30_12.26.01-client.txt
Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

robin4002

Bon voila, on a trouvé le problème, portalMaterial est null.
Donc ça veut dire qu’au moment ou tu initialises ton bloc IDimBlockPortal, Dragons.fire_stone est null.
La solution ? Il faut juste initialisé fire_stone avant IDimBlockPortal dans ta classe principale.
Et voila.

bin4r1s

Ah merci :), je teste.

EDIT: ça marche à la perfection, sujet résolu.