How do you patch a minecraft class?

[uyjulian]

Here.

 

 public int getBrightnessForRender(float par1)
    {
    	//Hah, found it too.
    	// ! is not, && is and, and <= is equal or less..
        if (!mod_xray.on && mod_xray.lightmode <= 0 && !mod_xray.cavefinder)
        {
        	//Okay, this ain't part of the mod.
        	
            int var2 = MathHelper.floor_double(this.posX);
            int var3 = MathHelper.floor_double(this.posZ);

            if (this.worldObj.blockExists(var2, 0, var3))
            {
                double var4 = (this.boundingBox.maxY - this.boundingBox.minY) * 0.66D;
                int var6 = MathHelper.floor_double(this.posY - (double)this.yOffset + var4);
                return this.worldObj.getLightBrightnessForSkyBlocks(var2, var6, var3, 0);
            }
            else
            {
                return 0;
                
            //Below is modded.
            }
            
            
        }
        else
        {
            return 1000;
        }
        //END OF MOD
    }

I want to patch a minecraft class with the above code.

 

I searched how and I didn't find an answer.

 

...

[Aquillian]

when you say patch are you offering it as a patch to an allready availble mod or are you trying to patch a core file?

 

also :-

&& = AND

|| = OR

[uyjulian]

  On 1/6/2013 at 1:13 AM, Aquillian said:

when you say patch are you offering it as a patch to an allready availble mod or are you trying to patch a core file?

 

also :-

&& = AND

|| = OR

core file

[uyjulian]

updated topic

[uyjulian]

Updated topic. AGAIN.

[opssemnik]

only way its editing that class, but i know some x ray mods that dosent edit bases classes, you must take a look at the way that you are doing your mod...

[uyjulian]

  On 1/7/2013 at 6:26 PM, opssemnik said:

only way its editing that class, but i know some x ray mods that dosent edit bases classes, you must take a look at the way that you are doing your mod...

 

so no patching?

[opssemnik]

you can only patch java files, only way to edit a class file without decompiling it, its using reflection or asm but u can change what you want(you can onnly detecte obfuscation, change something to public, or to private, or to final, or to non final)

[uyjulian]

so you can't replace a method with another?

 

EDIT: Replaced "function" with "method"

[uyjulian]

  On 1/7/2013 at 10:22 PM, opssemnik said:

you can only patch java files, only way to edit a class file without decompiling it, its using reflection or asm but u can change what you want(you can onnly detecte obfuscation, change something to public, or to private, or to final, or to non final)

is there a tutorial on it?

[vdvman1]

Using asm you can change ANYTHING in a class file at runtime (coremods) but is very hard to understand and use, as compiled java is very different to source java.

Here is the official tutorial for asm itself: http://download.forge.objectweb.org/asm/asm4-guide.pdf

As for setting up the mod side of it i do not understand, so I can't help you there

[uyjulian]

oh.

 

no tutorial on how to apply to mods.

[vdvman1]

Not that I know of, but NEI is open source so you could look at that if you want, you may be able to work it out from that

[uyjulian]

  On 1/8/2013 at 8:06 PM, vdvman1 said:

Not that I know of, but NEI is open source so you could look at that if you want, you may be able to work it out from that

 

For now, that option is what I'm doing.

[uyjulian]

Actually, can i just do extends (classnamehere) then put the function that i want to replace?

[vdvman1]

Doing that will only change that method for anything that uses your new class, so possibly

[uyjulian]

oh.

 

wait...

 

I know, go submit a patch to the minecraftforge github?

[vdvman1]

Only if you think other modders could benefit from it

[uyjulian]

  On 1/8/2013 at 10:48 PM, vdvman1 said:

Only if you think other modders could benefit from it

 

well, other people who are making x-ray mods are...

[uyjulian]

Well, i feel it's too much work... sigh..