Minecraft Forums

Quote from Sonicjumper

It may be just me, but I do not see any underlined parts of your code. I posted your code into Netbeans and I see what you mean. I am not an expert, but you probably should not have an onUpdate method inside an Item class. onUpdate should be mainly for blocks and entities, the same with the explode method. You should try putting those elsewhere in your code. I would try to make an extension of EntityPlayer called PlayerChecker or something and write boolean methods such as getCanExplode() or isHoldingNitro(), then reference to those in your ItemNitro class or mod_**** class.

Edit: A closer look reveals that the "inventory" "worldObj" "posX" "posY" and "posZ" are the variables not able to be accessed. Probably should try what I said above, but not using these in your ItemNitro class.

Quote from Unorthodox

Just a question, but why are you guys still coding for ML? why not forge?

Quote from Dab1998

Is it possible to use multiple textures from one .png, and if so, how? I need to know as I have a large sprite sheet of items and blocks I would like to mod in, but it would be tedious for texture pack creators to retexture each image, and even tedious for me to separate them into their own images. Thanks in advance.

Quote from ZIMDOT

when i start my gamei get a error and theres no errors when i recomile it so idk what to do....

Minecraft has crashed!	
	 ----------------------	
Minecraft has stopped running because it encountered a problem.

--- BEGIN ERROR REPORT 768cd716 --------
Generated 7/27/12 6:55 PM
Minecraft: Minecraft 1.2.5
OS: Windows XP (x86) version 5.1
Java: 1.6.0_31, Sun Microsystems Inc.
VM: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
LWJGL: 2.4.2
OpenGL: RADEON XPRESS 200 Series SW TCL x86/MMX/3DNow!/SSE2 version 1.4.5648 WinXP Release, ATI Technologies Inc.
java.lang.NullPointerException
at fr.a(CraftingManager.java:176)
at ClientRegistry.addRecipe(ClientRegistry.java:20)
at cpw.mods.fml.common.registry.FMLRegistry.addRecipe(FMLRegistry.java:41)
at ModLoader.addRecipe(ModLoader.java:179)
at mod_ZimmiteBlock.load(mod_ZimmiteBlock.java:12)
at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:351)
at cpw.mods.fml.common.Loader.modInit(Loader.java:263)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:604)
at cpw.mods.fml.client.FMLClientHandler.onLoadComplete(FMLClientHandler.java:203)
at net.minecraft.client.Minecraft.a(Minecraft.java:426)
at net.minecraft.client.Minecraft.run(Minecraft.java:735)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 4d3558a8 ----------

Quote from TechGuy543

These tutorials are for beginners who are just starting to mod. It gives them the basics on how to do stuff. There is no point in using FML for a few blocks and items. I am probably going to start Forge tutorials for more advanced things, after 1.3 though.


You need to use Minecraft Forge. I don't have tutorials on these yet but I will eventually. There are plenty of tutorials on it around already. I suggest using Methuselah's tutorials.


You are trying to use something in a recipe which hasn't yet been created. Check for something like this first and if you can't find it post your code in code tags and a spoiler.

package net.minecraft.src;
import java.util.Random;

public class mod_Zimmite extends BaseMod
{
public static final Block Zimmite = new BlockZimmite(769, ModLoader.addOverride("/terrain.png", "/zimmy.png")).setHardness(15F).setResistance(200F).setStepSound(Block.soundStoneFootstep).setBlockName("Zimmite"); // It's recommended to have non-screen names starting with a lower case character just for preference
public void load()
{
}
public mod_Zimmite()
{
ModLoader.registerBlock(Zimmite);
ModLoader.addName(Zimmite, "Zimmite Ore");
ModLoader.addSmelting(Block.planks.blockID, new ItemStack(Zimmite, 1));
}
public void generateSurface(World world, Random random, int chunkX, int chunkZ)
	    {
			    for(int i = 0; i < 7; i++)
			    {
					    int randPosX = chunkX + random.nextInt(16);
					    int randPosY = random.nextInt(20);
					    int randPosZ = chunkZ + random.nextInt(16);
					    (new WorldGenMinable(Zimmite.blockID, 8)).generate(world, random, randPosX, randPosY, randPosZ);
			    }
	    }
public String getVersion()
{
return "1.2.5";
}
}

package net.minecraft.src;
import java.util.Random;
public class BlockZimmite extends Block
{
public BlockZimmite(int i, int j)
{
super(i, j, Material.rock);
}
public int quantityDropped(Random random)
{
return 1;
}
public int idDropped(int i, Random random, int j)
{
return mod_Zimmite.Zimmite.blockID;
}
}

package net.minecraft.src;
public class mod_ItemZimmiteingot extends BaseMod
{
public static final Item Zimmiteingot = new ItemZimmiteingot(770).setItemName("Zimmiteingot");

public void load()
{
  Zimmiteingot.iconIndex = ModLoader.addOverride("/gui/items.png", "zimmiteingot.png");
  ModLoader.addName(Zimmiteingot, "Zimmite Ingot");
  ModLoader.addSmelting(mod_Zimmite.Zimmite.blockID, new ItemStack(Zimmiteingot, 1));
}

public String getVersion()
{
  return "1.2.5";
}
}

package net.minecraft.src;
public class ItemZimmiteingot extends Item
{
public ItemZimmiteingot(int i)
{
  super(i);
  maxStackSize = 64;
}
}

package net.minecraft.src;
public class mod_ZimmiteBlock extends BaseMod
{
public static final Block ZimmiteBlock = new BlockZimmiteBlock(771, 0).setBlockName("ZimmiteBlock").setHardness(3F).setResistance(4F).setLightValue(1F);
public void load()
{
  ZimmiteBlock.blockIndexInTexture = ModLoader.addOverride("/terrain.png", "/zimmiteblock.png");
  ModLoader.registerBlock(ZimmiteBlock);
  ModLoader.addName(ZimmiteBlock, "Zimmite Block");
  ModLoader.addRecipe(new ItemStack(ZimmiteBlock, 1), new Object []
  {"###", "###", "###", Character.valueOf('#'), mod_ItemZimmiteingot.Zimmiteingot.shiftedIndex});
  }
 
  public String getVersion()
  {
    return "1.2.5";
  }
}

package net.minecraft.src;
import java.util.Random;
public class BlockZimmiteBlock extends Block
{
public BlockZimmiteBlock(int i, int j)
{
super(i, j, Material.rock);
}
public int quantityDropped(Random random)
{
return 1;
}
public int idDropped(int i, Random random, int j)
{
return mod_ZimmiteBlock.ZimmiteBlock.blockID;
}
}

Quote from AraXis

This code is all you need. Materials are in EnumToolMaterial, this one is just telling you, what are swords doing and its working perfectly. You dont have to fill something in it.

Quote from ZIMDOT

I have every thing


mod_Zimmite

package net.minecraft.src;
import java.util.Random;

public class mod_Zimmite extends BaseMod
{
public static final Block Zimmite = new BlockZimmite(769, ModLoader.addOverride("/terrain.png", "/zimmy.png")).setHardness(15F).setResistance(200F).setStepSound(Block.soundStoneFootstep).setBlockName("Zimmite"); // It's recommended to have non-screen names starting with a lower case character just for preference
public void load()
{
}
public mod_Zimmite()
{
ModLoader.registerBlock(Zimmite);
ModLoader.addName(Zimmite, "Zimmite Ore");
ModLoader.addSmelting(Block.planks.blockID, new ItemStack(Zimmite, 1));
}
public void generateSurface(World world, Random random, int chunkX, int chunkZ)
	 {
			 for(int i = 0; i < 7; i++)
			 {
					 int randPosX = chunkX + random.nextInt(16);
					 int randPosY = random.nextInt(20);
					 int randPosZ = chunkZ + random.nextInt(16);
					 (new WorldGenMinable(Zimmite.blockID, 8)).generate(world, random, randPosX, randPosY, randPosZ);
			 }
	 }
public String getVersion()
{
return "1.2.5";
}
}

BlockZimmite

package net.minecraft.src;
import java.util.Random;
public class BlockZimmite extends Block
{
public BlockZimmite(int i, int j)
{
super(i, j, Material.rock);
}
public int quantityDropped(Random random)
{
return 1;
}
public int idDropped(int i, Random random, int j)
{
return mod_Zimmite.Zimmite.blockID;
}
}

mod_ItemZimmiteingot

package net.minecraft.src;
public class mod_ItemZimmiteingot extends BaseMod
{
public static final Item Zimmiteingot = new ItemZimmiteingot(770).setItemName("Zimmiteingot");

public void load()
{
Zimmiteingot.iconIndex = ModLoader.addOverride("/gui/items.png", "zimmiteingot.png");
ModLoader.addName(Zimmiteingot, "Zimmite Ingot");
ModLoader.addSmelting(mod_Zimmite.Zimmite.blockID, new ItemStack(Zimmiteingot, 1));
}

public String getVersion()
{
return "1.2.5";
}
}

ItemZimmiteingot

package net.minecraft.src;
public class ItemZimmiteingot extends Item
{
public ItemZimmiteingot(int i)
{
super(i);
maxStackSize = 64;
}
}

mod_ZimmiteBlock

package net.minecraft.src;
public class mod_ZimmiteBlock extends BaseMod
{
public static final Block ZimmiteBlock = new BlockZimmiteBlock(771, 0).setBlockName("ZimmiteBlock").setHardness(3F).setResistance(4F).setLightValue(1F);
public void load()
{
ZimmiteBlock.blockIndexInTexture = ModLoader.addOverride("/terrain.png", "/zimmiteblock.png");
ModLoader.registerBlock(ZimmiteBlock);
ModLoader.addName(ZimmiteBlock, "Zimmite Block");
ModLoader.addRecipe(new ItemStack(ZimmiteBlock, 1), new Object []
{"###", "###", "###", Character.valueOf('#'), mod_ItemZimmiteingot.Zimmiteingot.shiftedIndex});
}

public String getVersion()
{
return "1.2.5";
}
}

BlockZimmiteBlock

package net.minecraft.src;
import java.util.Random;
public class BlockZimmiteBlock extends Block
{
public BlockZimmiteBlock(int i, int j)
{
super(i, j, Material.rock);
}
public int quantityDropped(Random random)
{
return 1;
}
public int idDropped(int i, Random random, int j)
{
return mod_ZimmiteBlock.ZimmiteBlock.blockID;
}
}

Quote from TechGuy543

Merge your mod_ classes into one. Then you won't have a problem.

Quote from MrWillJa

Hey TechGuy are you ever going to make a tutorial on how to make new dimensions?

Quote from ZIMDOT

I dont know how i try once but failed

Quote from MinecraftTheGuys

Why does my Minecraft crash when I make a stair block?

Here is my code:

The mod_MoreBlocks

package net.minecraft.src;

public class mod_Blocks extends BaseMod
{
public static final Block DiamondStairs = new BlockDiamondStairs(125, 0).setBlockName("DiamondStairs").setHardness(5F).setResistance(10F).setStepSound(Block.soundMetalFootstep);

public void load()
{
DiamondStairs.blockIndexInTexture = ModLoader.addOverride("/terrain.png", "/moreblocks/diamondblock.png");
ModLoader.registerBlock(DiamondStairs);
ModLoader.addName(DiamondStairs, "Diamond Stairs");
ModLoader.addRecipe(new ItemStack(DiamondStairs, 1), new Object [] {"# ", "## ", "###", Character.valueOf('#'), Item.diamond});
}
public String getVersion()
{
return "More Blocks, by MinecraftTheGuys [1.2.5]";
}
}

The Block:

package net.minecraft.src;

import java.util.ArrayList;
public class BlockDiamondStairs extends Block
{
public BlockDiamondStairs(int i, int j)
{
super(i, j, Material.rock);
}
public void getCollidingBoundingBoxes(World world, int i, int j, int k, AxisAlignedBB axisalignedbb, ArrayList arraylist)
{
int l = world.getBlockMetadata(i, j, k);
if (l == 0)
{
setBlockBounds(0.0F, 0.0F, 0.0F, 0.5F, 0.5F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
setBlockBounds(0.5F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
} else if (l == 1)
{
setBlockBounds(0.0F, 0.0F, 0.0F, 0.5F, 1.0F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
setBlockBounds(0.5F, 0.0F, 0.0F, 1.0F, 0.5F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
} else if (l == 2)
{
setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.5F, 0.5F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
setBlockBounds(0.0F, 0.0F, 0.5F, 1.0F, 1.0F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
} else if (l == 3)
{
setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 0.5F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
setBlockBounds(0.0F, 0.0F, 0.5F, 1.0F, 0.5F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
}
setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
}
public void onBlockPlacedBy(World world, int i, int j, int k, EntityLiving entityliving)
{
int l = MathHelper.floor_double((double)((entityliving.rotationYaw * 4F) / 360F) + 0.5D) & 3;
if (l == 0)
{
world.setBlockMetadataWithNotify(i, j, k, 2);
} if (l == 1)
{
world.setBlockMetadataWithNotify(i, j, k, 1);
} if (l == 2)
{
world.setBlockMetadataWithNotify(i, j, k, 3);
} if (l == 3)
{
world.setBlockMetadataWithNotify(i, j, k, 0);
}
}
public void setBlockBoundsBasedOnState(IBlockAccess iblockaccess, int i, int j, int k)
{ setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
} public boolean isOpaqueCube()
{ return false;
} public boolean renderAsNormalBlock()
{ return false;
} public int getRenderType()
{
return 10;
}
}

The error:
Why does my Minecraft crash when I make a stair block?

Here is my code:

The mod_MoreBlocks

package net.minecraft.src;

public class mod_Blocks extends BaseMod
{
public static final Block DiamondStairs = new BlockDiamondStairs(125, 0).setBlockName("DiamondStairs").setHardness(5F).setResistance(10F).setStepSound(Block.soundMetalFootstep);

public void load()
{
DiamondStairs.blockIndexInTexture = ModLoader.addOverride("/terrain.png", "/moreblocks/diamondblock.png");
ModLoader.registerBlock(DiamondStairs);
ModLoader.addName(DiamondStairs, "Diamond Stairs");
ModLoader.addRecipe(new ItemStack(DiamondStairs, 1), new Object [] {"# ", "## ", "###", Character.valueOf('#'), Item.diamond});
}
public String getVersion()
{
return "More Blocks, by MinecraftTheGuys [1.2.5]";
}
}

The Block:

package net.minecraft.src;

import java.util.ArrayList;
public class BlockDiamondStairs extends Block
{
public BlockDiamondStairs(int i, int j)
{
super(i, j, Material.rock);
}
public void getCollidingBoundingBoxes(World world, int i, int j, int k, AxisAlignedBB axisalignedbb, ArrayList arraylist)
{
int l = world.getBlockMetadata(i, j, k);
if (l == 0)
{
setBlockBounds(0.0F, 0.0F, 0.0F, 0.5F, 0.5F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
setBlockBounds(0.5F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
} else if (l == 1)
{
setBlockBounds(0.0F, 0.0F, 0.0F, 0.5F, 1.0F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
setBlockBounds(0.5F, 0.0F, 0.0F, 1.0F, 0.5F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
} else if (l == 2)
{
setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.5F, 0.5F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
setBlockBounds(0.0F, 0.0F, 0.5F, 1.0F, 1.0F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
} else if (l == 3)
{
setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 0.5F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
setBlockBounds(0.0F, 0.0F, 0.5F, 1.0F, 0.5F, 1.0F);
super.getCollidingBoundingBoxes(world, i, j, k, axisalignedbb, arraylist);
}
setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
}
public void onBlockPlacedBy(World world, int i, int j, int k, EntityLiving entityliving)
{
int l = MathHelper.floor_double((double)((entityliving.rotationYaw * 4F) / 360F) + 0.5D) & 3;
if (l == 0)
{
world.setBlockMetadataWithNotify(i, j, k, 2);
} if (l == 1)
{
world.setBlockMetadataWithNotify(i, j, k, 1);
} if (l == 2)
{
world.setBlockMetadataWithNotify(i, j, k, 3);
} if (l == 3)
{
world.setBlockMetadataWithNotify(i, j, k, 0);
}
}
public void setBlockBoundsBasedOnState(IBlockAccess iblockaccess, int i, int j, int k)
{ setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
} public boolean isOpaqueCube()
{ return false;
} public boolean renderAsNormalBlock()
{ return false;
} public int getRenderType()
{
return 10;
}
}

The error:

java.lang.StringIndexOutOfBoundsException: String index out of range: 8
at java.lang.String.charAt(Unknown Source)
at net.minecraft.src.CraftingManager.addRecipe(CraftingManager.java:394)
at net.minecraft.src.ModLoader.addRecipe(ModLoader.java:412)
at net.minecraft.src.mod_Blocks.load(mod_Blocks.java:12)
at net.minecraft.src.ModLoader.init(ModLoader.java:856)
at net.minecraft.src.ModLoader.addAllRenderers(ModLoader.java:157)
at net.minecraft.src.RenderManager.<init>(RenderManager.java:85)
at net.minecraft.src.RenderManager.<clinit>(RenderManager.java:12)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:424)
at net.minecraft.client.Minecraft.run(Minecraft.java:786)
at java.lang.Thread.run(Unknown Source)

Please help!

The hole thing is wired because I edited it. :/

Quote from Dan211

I need a method to explode the player, can anyone help please?

worldObj.createExplosion(this, ModLoader.getMinecraftInstance().thePlayer.posX, ModLoader.getMinecraftInstance().posY, ModLoader.getMinecraftInstance().posZ, 3F);

Quote from TechGuy543

Create an explosion in the world at the players position.

worldObj.createExplosion(this, ModLoader.getMinecraftInstance().thePlayer.posX, ModLoader.getMinecraftInstance().posY, ModLoader.getMinecraftInstance().posZ, 3F);

Entity entity;
    World.createExplosion(entity, ModLoader.getMinecraftInstance().thePlayer.posX, ModLoader.getMinecraftInstance().thePlayer.posY, ModLoader.getMinecraftInstance().thePlayer.posZ, 3F);

Quote from Asyncronous

did you figure out what i was talking about??