C Hacks

You can write Cave Story hacks in C.
But you still need to know assembly.

#DEFINE
int asciiToNumber(int asciiValue) {="offset 421900 | push ebp | mov ebp, esp"
asciiValue=[ebp+8]
}="mov esp,ebp | pop ebp | retn"
"int *pointerToNumber = "="mov eax, "
"char "=
"digit0 = "="movzx edx, byte "
*pointerToNumber=[eax]
"int c = 0"="xor ecx, ecx"
"c += (digit - 0x30) * 1000"="sub edx, 30 | imul edx, edx, ~1000 | add ecx, edx"
"digit = *(pointerToNumber + 1)"="movzx edx, byte [eax + 1]"
"digit = *(pointerToNumber + 2)"="movzx edx, byte [eax + 2]"
"digit = *(pointerToNumber + 3)"="movzx edx, byte [eax + 3]"
"#def #"=
"c += (digit - 0x30) * 100"="sub edx, 30 | imul edx, edx, ~100 | add ecx, edx"
"c += (digit - 0x30) * 10"="sub edx, 30 | imul edx, edx, ~10 | add ecx, edx"
"c += digit - 0x30"="sub edx, 30 | add ecx, edx"
"return c"="mov eax, ecx | retn"
#ENDDEFINE
int asciiToNumber(int asciiValue) {
int c = 0;
int *pointerToNumber = asciiValue;
char digit = *pointerToNumber;
c += (digit - 0x30) * 1000;
digit = *(pointerToNumber + 1);
c += (digit - 0x30) * 100;
digit = *(pointerToNumber + 2);
c += (digit - 0x30) * 10;
digit = *(pointerToNumber + 3);
c += digit - 0x30;
return c;
}

Does anyone have a C to assembly translator?
That would be great. Then I wouldn't have to bother with the define statements.
*I hope this post is in the right forum

 

I think that's called a "compiler"
and from the look of all those defines, are you really writing C at all?
I've thought about making a "library" of Cave Story offsets for use with C it would have been too much work for not enough gain compared to just straight-out writing ASM.

See also http://www.delorie.com/djgpp/v2faq/faq8_20.html maybe? since that would technically be "C to assembly"

 

Since you joined in August, you learned assembly in 3 months?

If we had a C compiler that was built for patching Cave Story, then that would be awesome.
But no such thing exists because I am lazy and I don't know how to write a compiler only an assembler.

Also I think that all the other coders capable of making a compiler on this forum are working on other projects such as Booster's Lab or WTF Story.

 

Join date isn't a synonym for lurking time. It is possible to view these forums without an account, and assembly isn't exclusive to Cave Story.