[Creating Mods] Modding tutorials [21/5/11]

#1725 Feb 19, 2011
smith_61
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Quote from Dadadah »
i wish to chalenge myself....... i just wanna do it the hard way

Okay if you say so. When create the new Item object. put at the end .setItemName("Name");

It might not be itemname might what to check that.

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#1726 Feb 19, 2011
Dadadah
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Quote from smith_61 »
Quote from Dadadah »
i wish to chalenge myself....... i just wanna do it the hard way

Okay if you say so. When create the new Item object. put at the end .setItemName("Name");

It might not be itemname might what to check that.

i did that?

public static Item Darkgem = (new ItemDarkgem(99)).setIconCoord(7, 3).setItemName("Darkgem")
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#1727 Feb 19, 2011
forgottenkane
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Hey, how do I designate a sprite for my item? I wish to make a "coin," and I have done everything needed except getting it it's sprite.

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#1729 Feb 19, 2011
Dadadah
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If setItemName isn't working for you, try the func_20011_a function, simply replace setItemName with func_20011_a I had this problem before..[/quote]
can u tell me how i type it i tried .func_ but that didnt work i also tried func_ but it didnt work either

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#1730 Feb 19, 2011

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Quote from smith_61 »
Quote from CosmicSpore »
Quote from Joshj5hawk »
Hello again everyone. How would I go about getting a block to spawn ONLY on the edge of specific blocks? like I ONLY want say, sand to spawn next to dirt? (not what i'm using it for, just an example =]) any help?

You would have to write your own World Generation file (I hope you're good with Java).

You can use the World.getBlockID(X, Y, Z) function to get a block's type from coordinates.
The game typically uses random coordinates (because most things are randomly generated), so you'll just have to loop until you find a block you need, or until you've done too many tries and you want to quit.
(If block is never found it = endless loop, so don't try to find one forever.)

What he said. Check the blocks around the cords your given and if they match a ceratin block place it. If not don't place it. Or place the required ones next to it then place what you want.

Ah alright guys thanks. Not that great with java, lol, maybe I'll tear apart the original world gen files and see if I can piece something together lol

EDIT: what if I just replaced my blocks in this code and saved as a new world gen?

package net.minecraft.src;
// Decompiled by Jad v1.5.8g. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://www.kpdus.com/jad.html
// Decompiler options: packimports(3) braces deadcode 

import java.util.Random;

public class WorldGenClay extends WorldGenerator
{

    public WorldGenClay(int i)
    {
        clayBlockId = Block.blockClay.blockID;
        numberOfBlocks = i;
    }

    public boolean generate(World world, Random random, int i, int j, int k)
    {
        if(world.getBlockMaterial(i, j, k) != Material.water)
        {
            return false;
        }
        float f = random.nextFloat() * 3.141593F;
        double d = (float)(i + 8) + (MathHelper.sin(f) * (float)numberOfBlocks) / 8F;
        double d1 = (float)(i + 8) - (MathHelper.sin(f) * (float)numberOfBlocks) / 8F;
        double d2 = (float)(k + 8) + (MathHelper.cos(f) * (float)numberOfBlocks) / 8F;
        double d3 = (float)(k + 8) - (MathHelper.cos(f) * (float)numberOfBlocks) / 8F;
        double d4 = j + random.nextInt(3) + 2;
        double d5 = j + random.nextInt(3) + 2;
        for(int l = 0; l <= numberOfBlocks; l++)
        {
            double d6 = d + ((d1 - d) * (double)l) / (double)numberOfBlocks;
            double d7 = d4 + ((d5 - d4) * (double)l) / (double)numberOfBlocks;
            double d8 = d2 + ((d3 - d2) * (double)l) / (double)numberOfBlocks;
            double d9 = (random.nextDouble() * (double)numberOfBlocks) / 16D;
            double d10 = (double)(MathHelper.sin(((float)l * 3.141593F) / (float)numberOfBlocks) + 1.0F) * d9 + 1.0D;
            double d11 = (double)(MathHelper.sin(((float)l * 3.141593F) / (float)numberOfBlocks) + 1.0F) * d9 + 1.0D;
            for(int i1 = (int)(d6 - d10 / 2D); i1 <= (int)(d6 + d10 / 2D); i1++)
            {
                for(int j1 = (int)(d7 - d11 / 2D); j1 <= (int)(d7 + d11 / 2D); j1++)
                {
                    for(int k1 = (int)(d8 - d10 / 2D); k1 <= (int)(d8 + d10 / 2D); k1++)
                    {
                        double d12 = (((double)i1 + 0.5D) - d6) / (d10 / 2D);
                        double d13 = (((double)j1 + 0.5D) - d7) / (d11 / 2D);
                        double d14 = (((double)k1 + 0.5D) - d8) / (d10 / 2D);
                        if(d12 * d12 + d13 * d13 + d14 * d14 >= 1.0D)
                        {
                            continue;
                        }
                        int l1 = world.getBlockId(i1, j1, k1);
                        if(l1 == Block.sand.blockID)
                        {
                            world.setBlock(i1, j1, k1, clayBlockId);
                        }
                    }

                }

            }

        }

        return true;
    }

    private int clayBlockId;
    private int numberOfBlocks;
}

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#1731 Feb 20, 2011

mysticalmage13

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Join Date: 1/14/2011
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I need help... I've really been scratching my head on this one...

Here is my code:

package net.minecraft.src;

public class mod_StoneStairs extends BaseMod
{
	public String Version()
	{
		return "1.2_02";
	}
	
	public static final Block stairCompactStone;
	
	static
	{
		stairCompactStone = (new BlockStairs(93, Block.stone)).setBlockName("stairCompactStone");
	}
	
	public void AddRecipes(CraftingManager recipes)
	{
		recipes.addRecipe(new ItemStack(Block.stairCompactStone, 4), new Object[] {
			"#  ", "## ", "###", Character.valueOf('#'), Block.stone
		});
	}
}

Here is the error report:

*** Minecraft Coder Pack Version 2.8 ***
MCP 2.8 running in C:\MCP
Compiling Minecraft
sources\minecraft\net\minecraft\src\mod_StoneStairs.java:19: cannot find symbol
symbol  : variable stairCompactStone
location: class net.minecraft.src.Block
                recipes.addRecipe(new ItemStack(Block.stairCompactStone, 4), new
 Object[] {
                                                     ^
1 error
*** minecraft_server.jar was not found, skipping
=== MCP 2.8 recompile script finished ===
Press any key to continue . . .

What am i doing wrong?

#1732 Feb 20, 2011

Dadadah

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Quote from mysticalmage13 »

I need help... I've really been scratching my head on this one...

Here is my code:

package net.minecraft.src;

public class mod_StoneStairs extends BaseMod
{
	public String Version()
	{
		return "1.2_02";
	}
	
	public static final Block stairCompactStone;
	
	static
	{
		stairCompactStone = (new BlockStairs(93, Block.stone)).setBlockName("stairCompactStone");
	}
	
	public void AddRecipes(CraftingManager recipes)
	{
		recipes.addRecipe(new ItemStack(Block.stairCompactStone, 4), new Object[] {
			"#  ", "## ", "###", Character.valueOf('#'), Block.stone
		});
	}
}

Here is the error report:

*** Minecraft Coder Pack Version 2.8 ***
MCP 2.8 running in C:\MCP
Compiling Minecraft
sources\minecraft\net\minecraft\src\mod_StoneStairs.java:19: cannot find symbol
symbol  : variable stairCompactStone
location: class net.minecraft.src.Block
                recipes.addRecipe(new ItemStack(Block.stairCompactStone, 4), new
 Object[] {
                                                     ^
1 error
*** minecraft_server.jar was not found, skipping
=== MCP 2.8 recompile script finished ===
Press any key to continue . . .

What am i doing wrong?

If you give me more info i might be able to help you what are you trying to do?
im a semi-noob

#1733 Feb 20, 2011
smith_61
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He gave you all the info you need. See he's trying to use stairCompactStone in the Block class. but thats not where the it resides. It resides in the class he's trying to use it from. So if he removed the Block. it would work.

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#1734 Feb 20, 2011
mysticalmage13
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Quote from smith_61 »
He gave you all the info you need. See he's trying to use stairCompactStone in the Block class. but thats not where the it resides. It resides in the class he's trying to use it from. So if he removed the Block. it would work.

Thanks for the help. So I removed the Block and it recompiled properly and reobfuscated with no problems.

So I applied the mod to minecraft and it crashes the game whenever i try the recipe...

Any idea why? I'm drained trying to understand how to get this mod working.

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#1735 Feb 20, 2011
simo_415
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Did you install the same version of ModLoader and copy all the necessary classes into the JAR? Also what is the error when it crashes?

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#1736 Feb 20, 2011
smith_61
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simo you probably know more about this then i do. For setting time is a negative number night?

Edit. Yep negative number equals night

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#1737 Feb 20, 2011

mysticalmage13

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      Minecraft has crashed!      
      ----------------------      

Minecraft has stopped running because it encountered a problem.

If you wish to report this, please copy this entire text and email it to [email protected].
Please include a description of what you did when the error occured.

Mods loaded: 2
ModLoader Beta 1.2_02v4
mod_StoneStairs 1.2_02

--- BEGIN ERROR REPORT ed5ba21f --------
Generated 2/20/11 4:25 PM

Minecraft: Minecraft Beta 1.2_02
OS: Windows XP (x86) version 5.1
Java: 1.6.0_23, Sun Microsystems Inc.
VM: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
LWJGL: 2.4.2
OpenGL: GeForce 9500 GT/PCI/SSE2 version 3.3.0, NVIDIA Corporation

java.lang.NullPointerException
	at gm.e(SourceFile:110)
	at gm.g(SourceFile:124)
	at al.b(SourceFile:170)
	at ft.a(SourceFile:139)
	at ft.a(SourceFile:64)
	at ll.b(SourceFile:360)
	at net.minecraft.client.Minecraft.run(SourceFile:705)
	at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT d73b34ad ----------

Here is the error report...

#1739 Feb 20, 2011

mysticalmage13

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Quote from Gidding »

You didn't register your block so the game doesn't know about it.
Look in risugami's javadoc about modloader on how to do that.

PS MY 100th post!!! :biggrin.gif:

Thanks for the reply and...

Congratulations on the 100th post :smile.gif:

After trying to figure out how to register a block...
This is a code i came up with:

package net.minecraft.src;

public class mod_StoneStairs extends BaseMod
{
	public String Version()
	{
		return "1.2_02";
	}
	
	public static final Block stairCompactStone;
	
	public static void RegisterBlock(Block stairCompactStone);
	
	public static void AddName(Block stairCompactStone, "Smooth Stone Stairs");
		
	static
	{
		stairCompactStone = (new BlockStairs(93, Block.stone)).setBlockName("stairCompactStone");
	}
	
	public void AddRecipes(CraftingManager recipes)
	{
		recipes.addRecipe(new ItemStack(stairCompactStone, 4), new Object[] {
			"#  ", "## ", "###", Character.valueOf('#'), Block.stone
		});
	}
}

But it gives me this error upon recompiling:

*** Minecraft Coder Pack Version 2.8 ***
MCP 2.8 running in C:\MCP
Compiling Minecraft
sources\minecraft\net\minecraft\src\mod_StoneStairs.java:14: illegal start of ty
pe
        public static void AddName(Block stairCompactStone, "Smooth Stone Stairs
");
                                                            ^
1 error
*** minecraft_server.jar was not found, skipping
=== MCP 2.8 recompile script finished ===
Press any key to continue . . .

I can't figure out what i need to do to fix it? Can you help?

#1741 Feb 20, 2011
Dadadah
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Can someone decipher the code of the house for me?
I dont understand it and i wanna make the house rly good.
Also how do i name my blocks without modloader?
Func_ and itemname arent working...

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#1743 Feb 20, 2011
AlleDingeAndern
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Hey, all! Quick question, I've made the item class, but how can I assign it a custom graphic? I have an "items2.png" file, but how would I assign, say ItemCoord(10,5) to an item?

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#1745 Feb 20, 2011
mysticalmage13
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Quote from Gidding »

Use it like this

public mod_*YOURMOD*()
{
ModLoader.RegisterBlock(*YOURMOD*);
ModLoader.AddName(mineBlock, "*YOURNAME*");
}

That's how you add a name and register it

Oh man! I can't thank you enough... It finally worked... Thanks so much! :smile.gif:)

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#1748 Feb 20, 2011

smith_61

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Quote from Gidding »

Quote from Ade00 »

I keep getting the same error when I go to compile the world generator tutorial code.
The code is

package net.minecraft.src;

    import java.util.Random;

    public class WorldGenExample extends WorldGenerator
    {
        public WorldGenExample()
        {
        }

        public boolean generate(World world, Random random, int i, int j, int k)
        {
            // Gives this a 1 in 10 chance of generating
            if (random.nextInt(10) == 0)
            {
               // Loops 64 times, this could create up to 64 TNT
               for (int z = 0; z < 64; z++)
               {
                  int i1 = i + random.nextInt(8) - random.nextInt(8);
                  int j1 = j + random.nextInt(8) - random.nextInt(8);
                  int k1 = k + random.nextInt(8) - random.nextInt(8);
                  // Checks that there is nothing in the current location and there is grass beneath.
                  if(world.getBlockId(i1, j1, k1) == 0 && world.getBlockId(i1, j1 - 1, k1) == Block.grass.blockID && Block.tnt.canPlaceBlockAt(world, i1, j1, k1))
                  {
                     world.setBlockAndMetadata(i1, j1, k1, Block.tnt.blockID, random.nextInt(4));
                    
                  }
               }
            }   

        }
    }

But I get an this when I run recompile.bat

*** Minecraft Coder Pack Version 2.8 ***
MCP 2.8 running in C:\Users\Ade\Minecraft-mods
Compiling Minecraft
sources\minecraft\net\minecraft\src\WorldGenExample.java:31: missing return stat
ement
        }
        ^
1 error
*** minecraft_server.jar was not found, skipping
=== MCP 2.8 recompile script finished ===
Press any key to continue . . .

Can somebody help?

You clearly forgot to add or delete a bracket you didn't had to put there.
There must be the same amount of } as { in a class file.
If your not from england/america(like me)

A bracket = }
or this = {

I wasn't going to say anything because all this guy did was copy and paste the code. The thing he is missing for the boolean is a return type. a line saying
return something;

#1749 Feb 20, 2011
power5000
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gidding can u take a look at mine its on page 53

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GENERATION 21: The first time you see this, copy it into your sig on any forum and add 1 to the generation.
#1751 Feb 20, 2011
Dadadah
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I have prob, Im trying to make a tool and ive got everything done except i have this error:

[checking net.minecraft.src.Item] sources\minecraft\net\minecraft\src\Item.java:305: cannot find symbol symbol : variable pickaxeDarkgem location: class net.minecraft.src.Item pickaxeDarkgem = (new ItemPickaxe(100, EnumToolMaterial.DARKGEM)).setIconCoord(3, 6).setItemName("pickaxeDarkgem");

The little arrow is right below the , in (3, 6)
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#1752 Feb 20, 2011
smith_61
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Quote from Dadadah »
I have prob, Im trying to make a tool and ive got everything done except i have this error:

[checking net.minecraft.src.Item] sources\minecraft\net\minecraft\src\Item.java:305: cannot find symbol symbol : variable pickaxeDarkgem location: class net.minecraft.src.Item pickaxeDarkgem = (new ItemPickaxe(100, EnumToolMaterial.DARKGEM)).setIconCoord(3, 6).setItemName("pickaxeDarkgem");

^
that is the error

You need to put public static final Item pickaxeDarckgem; with the rest of the declarations
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