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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "LuaRules.h"
#include "LuaInclude.h"
#include "LuaUtils.h"
#include "LuaObjectRendering.h"
#include "LuaCallInCheck.h"
#include "Sim/Misc/GlobalSynced.h"
#include "Sim/Units/Unit.h"
#include "Sim/Units/UnitDef.h"
#include "Sim/Units/Scripts/CobInstance.h" // for UNPACK{X,Z}
#include "System/Log/ILog.h"
#include "System/FileSystem/VFSModes.h" // for SPRING_VFS_*
#include "System/Threading/SpringThreading.h"
#include <assert.h>
CLuaRules* luaRules = NULL;
static const char* LuaRulesSyncedFilename = "LuaRules/main.lua";
static const char* LuaRulesUnsyncedFilename = "LuaRules/draw.lua";
const int* CLuaRules::currentCobArgs = NULL;
/******************************************************************************/
/******************************************************************************/
static spring::mutex m_singleton;
DECL_LOAD_HANDLER(CLuaRules, luaRules)
DECL_FREE_HANDLER(CLuaRules, luaRules)
/******************************************************************************/
/******************************************************************************/
CLuaRules::CLuaRules()
: CLuaHandleSynced("LuaRules", LUA_HANDLE_ORDER_RULES)
{
currentCobArgs = NULL;
if (!IsValid())
return;
SetFullCtrl(true);
SetFullRead(true);
SetCtrlTeam(CEventClient::AllAccessTeam);
SetReadTeam(CEventClient::AllAccessTeam);
SetReadAllyTeam(CEventClient::AllAccessTeam);
SetSelectTeam(CEventClient::AllAccessTeam);
Init(LuaRulesSyncedFilename, LuaRulesUnsyncedFilename, SPRING_VFS_MOD_BASE);
}
CLuaRules::~CLuaRules()
{
luaRules = NULL;
currentCobArgs = NULL;
}
bool CLuaRules::AddSyncedCode(lua_State* L)
{
lua_getglobal(L, "Script");
LuaPushNamedCFunc(L, "PermitHelperAIs", PermitHelperAIs);
lua_pop(L, 1);
return true;
}
bool CLuaRules::AddUnsyncedCode(lua_State* L)
{
lua_getglobal(L, "Spring");
lua_pushliteral(L, "UnitRendering");
lua_newtable(L);
LuaObjectRendering<LUAOBJ_UNIT>::PushEntries(L);
lua_rawset(L, -3);
lua_pushliteral(L, "FeatureRendering");
lua_newtable(L);
LuaObjectRendering<LUAOBJ_FEATURE>::PushEntries(L);
lua_rawset(L, -3);
lua_pop(L, 1); // Spring
return true;
}
/******************************************************************************/
/******************************************************************************/
int CLuaRules::UnpackCobArg(lua_State* L)
{
if (currentCobArgs == NULL) {
luaL_error(L, "Error in UnpackCobArg(), no current args");
}
const int arg = luaL_checkint(L, 1) - 1;
if ((arg < 0) || (arg >= MAX_LUA_COB_ARGS)) {
luaL_error(L, "Error in UnpackCobArg(), bad index");
}
const int value = currentCobArgs[arg];
lua_pushnumber(L, UNPACKX(value));
lua_pushnumber(L, UNPACKZ(value));
return 2;
}
void CLuaRules::Cob2Lua(const LuaHashString& name, const CUnit* unit,
int& argsCount, int args[MAX_LUA_COB_ARGS])
{
static int callDepth = 0;
if (callDepth >= 16) {
LOG_L(L_WARNING, "CLuaRules::Cob2Lua() call overflow: %s",
name.GetString().c_str());
args[0] = 0; // failure
return;
}
auto L = syncedLuaHandle.L;
LUA_CALL_IN_CHECK(L);
const int top = lua_gettop(L);
if (!lua_checkstack(L, 1 + 3 + argsCount)) {
LOG_L(L_WARNING, "CLuaRules::Cob2Lua() lua_checkstack() error: %s",
name.GetString().c_str());
args[0] = 0; // failure
lua_settop(L, top);
return;
}
if (!name.GetGlobalFunc(L)) {
LOG_L(L_WARNING, "CLuaRules::Cob2Lua() missing function: %s",
name.GetString().c_str());
args[0] = 0; // failure
lua_settop(L, top);
return;
}
lua_pushnumber(L, unit->id);
lua_pushnumber(L, unit->unitDef->id);
lua_pushnumber(L, unit->team);
for (int a = 0; a < argsCount; a++) {
lua_pushnumber(L, args[a]);
}
// call the routine
callDepth++;
const int* oldArgs = currentCobArgs;
currentCobArgs = args;
const bool error = !syncedLuaHandle.RunCallIn(L, name, 3 + argsCount, LUA_MULTRET);
currentCobArgs = oldArgs;
callDepth--;
// bail on error
if (error) {
args[0] = 0; // failure
lua_settop(L, top);
return;
}
// get the results
const int retArgs = std::min(lua_gettop(L) - top, (MAX_LUA_COB_ARGS - 1));
for (int a = 1; a <= retArgs; a++) {
const int index = (a + top);
if (lua_isnumber(L, index)) {
args[a] = lua_toint(L, index);
}
else if (lua_isboolean(L, index)) {
args[a] = lua_toboolean(L, index) ? 1 : 0;
}
else if (lua_istable(L, index)) {
lua_rawgeti(L, index, 1);
lua_rawgeti(L, index, 2);
if (lua_isnumber(L, -2) && lua_isnumber(L, -1)) {
const int x = lua_toint(L, -2);
const int z = lua_toint(L, -1);
args[a] = PACKXZ(x, z);
} else {
args[a] = 0;
}
lua_pop(L, 2);
}
else {
args[a] = 0;
}
}
args[0] = 1; // success
lua_settop(L, top);
return;
}
/******************************************************************************/
/******************************************************************************/
//
// LuaRules Call-Outs
//
int CLuaRules::PermitHelperAIs(lua_State* L)
{
if (!lua_isboolean(L, 1)) {
luaL_error(L, "Incorrect argument to PermitHelperAIs()");
}
gs->noHelperAIs = !lua_toboolean(L, 1);
LOG("LuaRules has %s helper AIs",
(gs->noHelperAIs ? "disabled" : "enabled"));
return 0;
}
/******************************************************************************/
/******************************************************************************/
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