/**
* @brief Creates a mission hook to a certain stack.
*
* Basically a generic approach to hooking.
*
* @param L Lua state.
* @param stack Stack to put the hook in.
* @param pos Position in the stack of the function name.
* @return The hook ID or 0 on error.
*/
static unsigned int hook_generic( lua_State *L, const char* stack, int pos )
{
int i;
const char *func;
/* Last parameter must be function to hook */
func = luaL_checkstring(L,pos);
if (running_mission != NULL) {
/* make sure mission is a player mission */
for (i=0; i<MISSION_MAX; i++)
if (player_missions[i].id == running_mission->id)
break;
if (i>=MISSION_MAX) {
WARN("Mission not in stack trying to hook");
return 0;
}
return hook_addMisn( running_mission->id, func, stack );
}
else if (running_event != NULL) {
return hook_addEvent( running_event->id, func, stack );
}
NLUA_ERROR(L,"No hook target was set.");
return 0;
}
/**
* @brief Creates a mission hook to a certain stack.
*
* Basically a generic approach to hooking.
*
* @param L Lua state.
* @param stack Stack to put the hook in.
* @param ms Milliseconds to delay (pass stack as NULL to set as timer).
* @param pos Position in the stack of the function name.
* @return The hook ID or 0 on error.
*/
static unsigned int hook_generic( lua_State *L, const char* stack, double ms, int pos, ntime_t date )
{
int i;
const char *func;
unsigned int h;
Event_t *running_event;
Mission *running_mission;
/* Last parameter must be function to hook */
func = luaL_checkstring(L,pos);
/* Get stuff. */
running_event = event_getFromLua(L);
running_mission = misn_getFromLua(L);
h = 0;
if (running_mission != NULL) {
/* make sure mission is a player mission */
for (i=0; i<MISSION_MAX; i++)
if (player_missions[i].id == running_mission->id)
break;
if (i>=MISSION_MAX) {
WARN("Mission not in stack trying to hook, forgot to run misn.accept()?");
return 0;
}
if (stack != NULL)
h = hook_addMisn( running_mission->id, func, stack );
else if (date != 0)
h = hook_addDateMisn( running_mission->id, func, date );
else
h = hook_addTimerMisn( running_mission->id, func, ms );
}
else if (running_event != NULL) {
if (stack != NULL)
h = hook_addEvent( running_event->id, func, stack );
else if (date != 0)
h = hook_addDateEvt( running_event->id, func, date );
else
h = hook_addTimerEvt( running_event->id, func, ms );
}
if (h == 0) {
NLUA_ERROR(L,"No hook target was set.");
return 0;
}
/* Check parameter. */
if (!lua_isnil(L,pos+1))
hookL_setarg( L, h, pos+1 );
return h;
}
