Pro tips for hooking up the function

[Whiskas]

		int hook_BG_IsWeaponValid(int a1, int a2) {
    
    int v3;
    char v4;
    
    signed int (*sub_80E9758)(int a1);
    *(int *)&sub_80E9758 = 0x80E9758;
    
    int (*sub_80D9E84)(int a1, signed int a2);
    *(int *)&sub_80D9E84 = 0x80D9E84;
    
    int (*sub_80E9270)(int a1);
    *(int *)&sub_80E9270 = 0x80E9270;

    v4 = 1;
    if ( !(unsigned int8_t)sub_80E9758(a2) )
        v4 = 0;
    if ( !(unsigned int8_t)sub_80D9E84(a1 + 1348, a2) )
        v4 = 0;
    v3 = sub_80E9270(a2);
    if ( !*(long *)(v3 + 132) && *(char *)(a1 + 1365) != a2 && *(char *)(a1 + 1366) != a2 && *(long *)(v3 + 876) != a2 )
        v4 = 0;
    
    // printf("Testcall\n");

    return (unsigned int8_t)v4;
} 
	

Sooo for the short functions we can only change types of variables and it will work out anyway? Whoa.

But where did it came from?

		signed int (*sub_80E9758)(int a1);
    *(int *)&sub_80E9758 = 0x80E9758;
    
    int (*sub_80D9E84)(int a1, signed int a2);
    *(int *)&sub_80D9E84 = 0x80D9E84;
    
    int (*sub_80E9270)(int a1);
    *(int *)&sub_80E9270 = 0x80E9270; 
	

My _weapons.gsc file is nothing special. I've only added function deleting machine guns and added precaching every rifle for every team. http://pastebin.com/yKg1RfBb

I've added some prints to your hook function. It compiled properly (Thanks!). Just waiting for the server to become empty so I can implement new libcod.