CodeCallback_FireGrenade

Heres a working version of CodeCallback_FireGrenade for cod2 1.3:

Possible uses: nade explosion timer and preventing people from changing team after throwing a grenade (prevent those filthy teamkills)

libcod.cpp:
after

Code:

---

int codecallback_playercommand = 0;
int codecallback_userinfochanged = 0;

---

add

Code:

---

int codecallback_fire_grenade = 0;

---

after

Code:

---

        #else
                codecallback_playercommand = codscript_load_function((char *)"maps/mp/gametypes/_callbacksetup", (char *)"CodeCallback_PlayerCommand", 0);
                codecallback_userinfochanged = codscript_load_function((char *)"maps/mp/gametypes/_callbacksetup", (char *)"CodeCallback_UserInfoChanged", 0);

---

add

Code:

---

                codecallback_fire_grenade = codscript_load_function((char *)"maps/mp/gametypes/_callbacksetup", (char *)"CodeCallback_FireGrenade", 0);

---

Below that function, add:

Code:

---

cHook *hook_fire_grenade;
int fire_grenade(int player, int a2, int a3, int weapon, int a5)
{
        hook_fire_grenade->unhook();
        int (*sig)(int player, int a2, int a3, int a4, int a5);
        *(int *)&sig = hook_fire_grenade->from;
        int grenade = sig(player, a2, a3, weapon, a5);
        hook_fire_grenade->hook();
        int (*sig2)(int weapon);
        *(int *)&sig2 = 0x80EB9A4; //cod2_1_3
        int weaponname = sig2(weapon);
        char *wname2 = *(char**)weaponname;
        stackPushString(wname2);
        stackPushEntity(grenade);
        short ret = codscript_call_callback_entity(player, codecallback_fire_grenade, 2);
        codscript_callback_finish(ret);
        return grenade;
}

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and in an appropriate spot (somewhere in class cCallOfDuty2Pro) add

Code:

---

                        hook_fire_grenade = new cHook(0x810E68E, (int) fire_grenade);
                        hook_fire_grenade->hook();

---

Values for other cod versions:
cod2_1_0:
hook_fire_grenade: 0x810C1F6
sig2:
0x80E9270

cod2_1_2:
hook_fire_grenade:
0x810E532
sig2:
0x80EB860


Inside your _callbacksetup add this:

Code:

---

CodeCallback_FireGrenade(grenade, name)
{
}

---

This function will be called when a player throws a nade, on the player that is throwing the nade. The grenade-var will be the entity of the grenade, and the name will be a string, like "frag_grenade_american_mp"


Have fun :)

Sidenote on a point that i havent explored yet myself: if the weaponname is exactly 32 chars long, the \0 might be missing, so it could be beneficial to strncpy it with a \0 at the end.