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SRB2/src/lua_hooklib.c

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// SONIC ROBO BLAST 2
//-----------------------------------------------------------------------------
// Copyright (C) 2012-2016 by John "JTE" Muniz.
// Copyright (C) 2012-2016 by Sonic Team Junior.
//
// This program is free software distributed under the
// terms of the GNU General Public License, version 2.
// See the 'LICENSE' file for more details.
//-----------------------------------------------------------------------------
/// \file lua_hooklib.c
/// \brief hooks for Lua scripting
#include "doomdef.h"
#ifdef HAVE_BLUA
#include "doomstat.h"
#include "p_mobj.h"
#include "g_game.h"
#include "r_things.h"
#include "b_bot.h"
#include "z_zone.h"
#include "lua_script.h"
#include "lua_libs.h"
#include "lua_hook.h"
#include "lua_hud.h" // hud_running errors
static UINT8 hooksAvailable[(hook_MAX/8)+1];
const char *const hookNames[hook_MAX+1] = {
"NetVars",
"MapChange",
"MapLoad",
"PlayerJoin",
"ThinkFrame",
"MobjSpawn",
"MobjCollide",
"MobjMoveCollide",
"TouchSpecial",
"MobjFuse",
"MobjThinker",
"BossThinker",
"ShouldDamage",
"MobjDamage",
"MobjDeath",
"BossDeath",
"MobjRemoved",
"JumpSpecial",
"AbilitySpecial",
"SpinSpecial",
"JumpSpinSpecial",
"BotTiccmd",
"BotAI",
"LinedefExecute",
"PlayerMsg",
"HurtMsg",
"PlayerSpawn",
"ShieldSpawn",
"ShieldSpecial",
NULL
};
// Hook metadata
struct hook_s
{
struct hook_s *next;
enum hook type;
UINT16 id;
union {
mobjtype_t mt;
char *skinname;
char *funcname;
} s;
boolean error;
};
typedef struct hook_s* hook_p;
#define FMT_HOOKID "hook_%d"
hook_p roothook;
// Takes hook, function, and additional arguments (mobj type to act on, etc.)
static int lib_addHook(lua_State *L)
{
static struct hook_s hook = {NULL, 0, 0, {0}, false};
hook_p hookp, *lastp;
hook.type = luaL_checkoption(L, 1, NULL, hookNames);
lua_remove(L, 1);
luaL_checktype(L, 1, LUA_TFUNCTION);
if (hud_running)
return luaL_error(L, "HUD rendering code should not call this function!");
switch(hook.type)
{
// Take a mobjtype enum which this hook is specifically for.
case hook_MobjSpawn:
case hook_MobjCollide:
case hook_MobjMoveCollide:
case hook_TouchSpecial:
case hook_MobjFuse:
case hook_MobjThinker:
case hook_BossThinker:
case hook_ShouldDamage:
case hook_MobjDamage:
case hook_MobjDeath:
case hook_BossDeath:
case hook_MobjRemoved:
case hook_HurtMsg:
hook.s.mt = MT_NULL;
if (lua_isnumber(L, 2))
hook.s.mt = lua_tonumber(L, 2);
break;
case hook_BotAI:
hook.s.skinname = NULL;
if (lua_isstring(L, 2))
{ // lowercase copy
const char *s = lua_tostring(L, 2);
char *p = hook.s.skinname = ZZ_Alloc(strlen(s)+1);
do {
*p = tolower(*s);
++p;
} while(*(++s));
*p = 0;
}
break;
case hook_LinedefExecute: // Linedef executor functions
{ // uppercase copy
const char *s = luaL_checkstring(L, 2);
char *p = hook.s.funcname = ZZ_Alloc(strlen(s)+1);
do {
*p = toupper(*s);
++p;
} while(*(++s));
*p = 0;
}
break;
default:
break;
}
lua_settop(L, 1); // lua stack contains only the function now.
hooksAvailable[hook.type/8] |= 1<<(hook.type%8);
// iterate the hook metadata structs
// set hook.id to the highest id + 1
// set lastp to the last hook struct's "next" pointer.
lastp = &roothook;
hook.id = 0;
for (hookp = roothook; hookp; hookp = hookp->next)
{
if (hookp->id >= hook.id)
hook.id = hookp->id+1;
lastp = &hookp->next;
}
// allocate a permanent memory struct to stuff hook.
hookp = ZZ_Alloc(sizeof(struct hook_s));
memcpy(hookp, &hook, sizeof(struct hook_s));
// tack it onto the end of the linked list.
*lastp = hookp;
// set the hook function in the registry.
lua_pushfstring(L, FMT_HOOKID, hook.id);
lua_pushvalue(L, 1);
lua_settable(L, LUA_REGISTRYINDEX);
return 0;
}
int LUA_HookLib(lua_State *L)
{
memset(hooksAvailable,0,sizeof(UINT8[(hook_MAX/8)+1]));
roothook = NULL;
lua_register(L, "addHook", lib_addHook);
return 0;
}
boolean LUAh_MobjHook(mobj_t *mo, enum hook which)
{
hook_p hookp;
boolean hooked = false;
if (!gL || !(hooksAvailable[which/8] & (1<<(which%8))))
return false;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == which
&& (hookp->s.mt == MT_NULL || hookp->s.mt == mo->type))
{
if (lua_gettop(gL) == 0)
LUA_PushUserdata(gL, mo, META_MOBJ);
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -2);
if (lua_pcall(gL, 1, 1, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
continue;
}
if (lua_toboolean(gL, -1))
hooked = true;
lua_pop(gL, 1);
}
lua_settop(gL, 0);
return hooked;
}
boolean LUAh_PlayerHook(player_t *plr, enum hook which)
{
hook_p hookp;
boolean hooked = false;
if (!gL || !(hooksAvailable[which/8] & (1<<(which%8))))
return false;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == which)
{
if (lua_gettop(gL) == 0)
LUA_PushUserdata(gL, plr, META_PLAYER);
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -2);
if (lua_pcall(gL, 1, 1, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
continue;
}
if (lua_toboolean(gL, -1))
hooked = true;
lua_pop(gL, 1);
}
lua_settop(gL, 0);
return hooked;
}
// Hook for map change (before load)
void LUAh_MapChange(void)
{
hook_p hookp;
if (!gL || !(hooksAvailable[hook_MapChange/8] & (1<<(hook_MapChange%8))))
return;
lua_settop(gL, 0);
lua_pushinteger(gL, gamemap);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_MapChange)
{
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -2);
LUA_Call(gL, 1);
}
lua_settop(gL, 0);
}
// Hook for map load
void LUAh_MapLoad(void)
{
hook_p hookp;
if (!gL || !(hooksAvailable[hook_MapLoad/8] & (1<<(hook_MapLoad%8))))
return;
lua_settop(gL, 0);
lua_pushinteger(gL, gamemap);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_MapLoad)
{
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -2);
LUA_Call(gL, 1);
}
lua_settop(gL, 0);
}
// Hook for Got_AddPlayer
void LUAh_PlayerJoin(int playernum)
{
hook_p hookp;
if (!gL || !(hooksAvailable[hook_PlayerJoin/8] & (1<<(hook_PlayerJoin%8))))
return;
lua_settop(gL, 0);
lua_pushinteger(gL, playernum);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_PlayerJoin)
{
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -2);
LUA_Call(gL, 1);
}
lua_settop(gL, 0);
}
// Hook for frame (after mobj and player thinkers)
void LUAh_ThinkFrame(void)
{
hook_p hookp;
if (!gL || !(hooksAvailable[hook_ThinkFrame/8] & (1<<(hook_ThinkFrame%8))))
return;
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_ThinkFrame)
{
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
if (lua_pcall(gL, 0, 0, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
}
}
}
// Hook for mobj collisions
UINT8 LUAh_MobjCollideHook(mobj_t *thing1, mobj_t *thing2, enum hook which)
{
hook_p hookp;
UINT8 shouldCollide = 0; // 0 = default, 1 = force yes, 2 = force no.
if (!gL || !(hooksAvailable[which/8] & (1<<(which%8))))
return 0;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == which
&& (hookp->s.mt == MT_NULL || hookp->s.mt == thing1->type))
{
if (lua_gettop(gL) == 0)
{
LUA_PushUserdata(gL, thing1, META_MOBJ);
LUA_PushUserdata(gL, thing2, META_MOBJ);
}
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -3);
lua_pushvalue(gL, -3);
if (lua_pcall(gL, 2, 1, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
continue;
}
if (!lua_isnil(gL, -1))
{ // if nil, leave shouldCollide = 0.
if (lua_toboolean(gL, -1))
shouldCollide = 1; // Force yes
else
shouldCollide = 2; // Force no
}
lua_pop(gL, 1);
}
lua_settop(gL, 0);
return shouldCollide;
}
// Hook for P_TouchSpecialThing by mobj type
boolean LUAh_TouchSpecial(mobj_t *special, mobj_t *toucher)
{
hook_p hookp;
boolean hooked = false;
if (!gL || !(hooksAvailable[hook_TouchSpecial/8] & (1<<(hook_TouchSpecial%8))))
return 0;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_TouchSpecial
&& (hookp->s.mt == MT_NULL || hookp->s.mt == special->type))
{
if (lua_gettop(gL) == 0)
{
LUA_PushUserdata(gL, special, META_MOBJ);
LUA_PushUserdata(gL, toucher, META_MOBJ);
}
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -3);
lua_pushvalue(gL, -3);
if (lua_pcall(gL, 2, 1, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
continue;
}
if (lua_toboolean(gL, -1))
hooked = true;
lua_pop(gL, 1);
}
lua_settop(gL, 0);
return hooked;
}
// Hook for P_DamageMobj by mobj type (Should mobj take damage?)
UINT8 LUAh_ShouldDamage(mobj_t *target, mobj_t *inflictor, mobj_t *source, INT32 damage)
{
hook_p hookp;
UINT8 shouldDamage = 0; // 0 = default, 1 = force yes, 2 = force no.
if (!gL || !(hooksAvailable[hook_ShouldDamage/8] & (1<<(hook_ShouldDamage%8))))
return 0;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_ShouldDamage
&& (hookp->s.mt == MT_NULL || hookp->s.mt == target->type))
{
if (lua_gettop(gL) == 0)
{
LUA_PushUserdata(gL, target, META_MOBJ);
LUA_PushUserdata(gL, inflictor, META_MOBJ);
LUA_PushUserdata(gL, source, META_MOBJ);
lua_pushinteger(gL, damage);
}
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -5);
lua_pushvalue(gL, -5);
lua_pushvalue(gL, -5);
lua_pushvalue(gL, -5);
if (lua_pcall(gL, 4, 1, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
continue;
}
if (!lua_isnil(gL, -1))
{
if (lua_toboolean(gL, -1))
shouldDamage = 1; // Force yes
else
shouldDamage = 2; // Force no
}
lua_pop(gL, 1);
}
lua_settop(gL, 0);
return shouldDamage;
}
// Hook for P_DamageMobj by mobj type (Mobj actually takes damage!)
boolean LUAh_MobjDamage(mobj_t *target, mobj_t *inflictor, mobj_t *source, INT32 damage)
{
hook_p hookp;
boolean hooked = false;
if (!gL || !(hooksAvailable[hook_MobjDamage/8] & (1<<(hook_MobjDamage%8))))
return 0;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_MobjDamage
&& (hookp->s.mt == MT_NULL || hookp->s.mt == target->type))
{
if (lua_gettop(gL) == 0)
{
LUA_PushUserdata(gL, target, META_MOBJ);
LUA_PushUserdata(gL, inflictor, META_MOBJ);
LUA_PushUserdata(gL, source, META_MOBJ);
lua_pushinteger(gL, damage);
}
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -5);
lua_pushvalue(gL, -5);
lua_pushvalue(gL, -5);
lua_pushvalue(gL, -5);
if (lua_pcall(gL, 4, 1, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
continue;
}
if (lua_toboolean(gL, -1))
hooked = true;
lua_pop(gL, 1);
}
lua_settop(gL, 0);
return hooked;
}
// Hook for P_KillMobj by mobj type
boolean LUAh_MobjDeath(mobj_t *target, mobj_t *inflictor, mobj_t *source)
{
hook_p hookp;
boolean hooked = false;
if (!gL || !(hooksAvailable[hook_MobjDeath/8] & (1<<(hook_MobjDeath%8))))
return 0;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_MobjDeath
&& (hookp->s.mt == MT_NULL || hookp->s.mt == target->type))
{
if (lua_gettop(gL) == 0)
{
LUA_PushUserdata(gL, target, META_MOBJ);
LUA_PushUserdata(gL, inflictor, META_MOBJ);
LUA_PushUserdata(gL, source, META_MOBJ);
}
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -4);
lua_pushvalue(gL, -4);
lua_pushvalue(gL, -4);
if (lua_pcall(gL, 3, 1, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
continue;
}
if (lua_toboolean(gL, -1))
hooked = true;
lua_pop(gL, 1);
}
lua_settop(gL, 0);
return hooked;
}
// Hook for B_BuildTiccmd
boolean LUAh_BotTiccmd(player_t *bot, ticcmd_t *cmd)
{
hook_p hookp;
boolean hooked = false;
if (!gL || !(hooksAvailable[hook_BotTiccmd/8] & (1<<(hook_BotTiccmd%8))))
return false;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_BotTiccmd)
{
if (lua_gettop(gL) == 0)
{
LUA_PushUserdata(gL, bot, META_PLAYER);
LUA_PushUserdata(gL, cmd, META_TICCMD);
}
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -3);
lua_pushvalue(gL, -3);
if (lua_pcall(gL, 2, 1, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
continue;
}
if (lua_toboolean(gL, -1))
hooked = true;
lua_pop(gL, 1);
}
lua_settop(gL, 0);
return hooked;
}
// Hook for B_BuildTailsTiccmd by skin name
boolean LUAh_BotAI(mobj_t *sonic, mobj_t *tails, ticcmd_t *cmd)
{
hook_p hookp;
boolean hooked = false;
if (!gL || !(hooksAvailable[hook_BotAI/8] & (1<<(hook_BotAI%8))))
return false;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_BotAI
&& (hookp->s.skinname == NULL || !strcmp(hookp->s.skinname, ((skin_t*)tails->skin)->name)))
{
if (lua_gettop(gL) == 0)
{
LUA_PushUserdata(gL, sonic, META_MOBJ);
LUA_PushUserdata(gL, tails, META_MOBJ);
}
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -3);
lua_pushvalue(gL, -3);
if (lua_pcall(gL, 2, 8, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
continue;
}
// This turns forward, backward, left, right, jump, and spin into a proper ticcmd for tails.
if (lua_istable(gL, 2+1)) {
boolean forward=false, backward=false, left=false, right=false, strafeleft=false, straferight=false, jump=false, spin=false;
#define CHECKFIELD(field) \
lua_getfield(gL, 2+1, #field);\
if (lua_toboolean(gL, -1))\
field = true;\
lua_pop(gL, 1);
CHECKFIELD(forward)
CHECKFIELD(backward)
CHECKFIELD(left)
CHECKFIELD(right)
CHECKFIELD(strafeleft)
CHECKFIELD(straferight)
CHECKFIELD(jump)
CHECKFIELD(spin)
#undef CHECKFIELD
B_KeysToTiccmd(tails, cmd, forward, backward, left, right, strafeleft, straferight, jump, spin);
} else
B_KeysToTiccmd(tails, cmd, lua_toboolean(gL, 2+1), lua_toboolean(gL, 2+2), lua_toboolean(gL, 2+3), lua_toboolean(gL, 2+4), lua_toboolean(gL, 2+5), lua_toboolean(gL, 2+6), lua_toboolean(gL, 2+7), lua_toboolean(gL, 2+8));
lua_pop(gL, 8);
hooked = true;
}
lua_settop(gL, 0);
return hooked;
}
// Hook for linedef executors
boolean LUAh_LinedefExecute(line_t *line, mobj_t *mo, sector_t *sector)
{
hook_p hookp;
boolean hooked = false;
if (!gL || !(hooksAvailable[hook_LinedefExecute/8] & (1<<(hook_LinedefExecute%8))))
return 0;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_LinedefExecute
&& !strcmp(hookp->s.funcname, line->text))
{
if (lua_gettop(gL) == 0)
{
LUA_PushUserdata(gL, line, META_LINE);
LUA_PushUserdata(gL, mo, META_MOBJ);
LUA_PushUserdata(gL, sector, META_SECTOR);
}
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -4);
lua_pushvalue(gL, -4);
lua_pushvalue(gL, -4);
LUA_Call(gL, 3);
hooked = true;
}
lua_settop(gL, 0);
return hooked;
}
// Hook for player chat
boolean LUAh_PlayerMsg(int source, int target, int flags, char *msg)
{
hook_p hookp;
boolean hooked = false;
if (!gL || !(hooksAvailable[hook_PlayerMsg/8] & (1<<(hook_PlayerMsg%8))))
return false;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_PlayerMsg)
{
if (lua_gettop(gL) == 0)
{
LUA_PushUserdata(gL, &players[source], META_PLAYER); // Source player
if (flags & 2 /*HU_CSAY*/) { // csay TODO: make HU_CSAY accessible outside hu_stuff.c
lua_pushinteger(gL, 3); // type
lua_pushnil(gL); // target
} else if (target == -1) { // sayteam
lua_pushinteger(gL, 1); // type
lua_pushnil(gL); // target
} else if (target == 0) { // say
lua_pushinteger(gL, 0); // type
lua_pushnil(gL); // target
} else { // sayto
lua_pushinteger(gL, 2); // type
LUA_PushUserdata(gL, &players[target-1], META_PLAYER); // target
}
lua_pushstring(gL, msg); // msg
}
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -5);
lua_pushvalue(gL, -5);
lua_pushvalue(gL, -5);
lua_pushvalue(gL, -5);
if (lua_pcall(gL, 4, 1, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
continue;
}
if (lua_toboolean(gL, -1))
hooked = true;
lua_pop(gL, 1);
}
lua_settop(gL, 0);
return hooked;
}
// Hook for hurt messages
boolean LUAh_HurtMsg(player_t *player, mobj_t *inflictor, mobj_t *source)
{
hook_p hookp;
boolean hooked = false;
if (!gL || !(hooksAvailable[hook_HurtMsg/8] & (1<<(hook_HurtMsg%8))))
return false;
lua_settop(gL, 0);
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_HurtMsg
&& (hookp->s.mt == MT_NULL || (inflictor && hookp->s.mt == inflictor->type)))
{
if (lua_gettop(gL) == 0)
{
LUA_PushUserdata(gL, player, META_PLAYER);
LUA_PushUserdata(gL, inflictor, META_MOBJ);
LUA_PushUserdata(gL, source, META_MOBJ);
}
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -4);
lua_pushvalue(gL, -4);
lua_pushvalue(gL, -4);
if (lua_pcall(gL, 3, 1, 0)) {
if (!hookp->error || cv_debug & DBG_LUA)
CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
lua_pop(gL, 1);
hookp->error = true;
continue;
}
if (lua_toboolean(gL, -1))
hooked = true;
lua_pop(gL, 1);
}
lua_settop(gL, 0);
return hooked;
}
void LUAh_NetArchiveHook(lua_CFunction archFunc)
{
hook_p hookp;
if (!gL || !(hooksAvailable[hook_NetVars/8] & (1<<(hook_NetVars%8))))
return;
// stack: tables
I_Assert(lua_gettop(gL) > 0);
I_Assert(lua_istable(gL, -1));
// tables becomes an upvalue of archFunc
lua_pushvalue(gL, -1);
lua_pushcclosure(gL, archFunc, 1);
// stack: tables, archFunc
for (hookp = roothook; hookp; hookp = hookp->next)
if (hookp->type == hook_NetVars)
{
lua_pushfstring(gL, FMT_HOOKID, hookp->id);
lua_gettable(gL, LUA_REGISTRYINDEX);
lua_pushvalue(gL, -2); // archFunc
LUA_Call(gL, 1);
}
lua_pop(gL, 1); // pop archFunc
// stack: tables
}
#endif
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