minetest/src/script/cpp_api/s_env.cpp

199 lines
5.5 KiB
C++

/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "cpp_api/s_env.h"
#include "cpp_api/s_internal.h"
#include "common/c_converter.h"
#include "log.h"
#include "environment.h"
#include "mapgen.h"
#include "lua_api/l_env.h"
#include "server.h"
void ScriptApiEnv::environment_OnGenerated(v3s16 minp, v3s16 maxp,
u32 blockseed)
{
SCRIPTAPI_PRECHECKHEADER
// Get core.registered_on_generateds
lua_getglobal(L, "core");
lua_getfield(L, -1, "registered_on_generateds");
// Call callbacks
push_v3s16(L, minp);
push_v3s16(L, maxp);
lua_pushnumber(L, blockseed);
runCallbacks(3, RUN_CALLBACKS_MODE_FIRST);
}
void ScriptApiEnv::environment_Step(float dtime)
{
SCRIPTAPI_PRECHECKHEADER
//infostream<<"scriptapi_environment_step"<<std::endl;
// Get core.registered_globalsteps
lua_getglobal(L, "core");
lua_getfield(L, -1, "registered_globalsteps");
// Call callbacks
lua_pushnumber(L, dtime);
try {
runCallbacks(1, RUN_CALLBACKS_MODE_FIRST);
} catch (LuaError &e) {
getServer()->setAsyncFatalError(e.what());
}
}
void ScriptApiEnv::player_event(ServerActiveObject* player, std::string type)
{
SCRIPTAPI_PRECHECKHEADER
if (player == NULL)
return;
// Get minetest.registered_playerevents
lua_getglobal(L, "minetest");
lua_getfield(L, -1, "registered_playerevents");
// Call callbacks
objectrefGetOrCreate(L, player); // player
lua_pushstring(L,type.c_str()); // event type
try {
runCallbacks(2, RUN_CALLBACKS_MODE_FIRST);
} catch (LuaError &e) {
getServer()->setAsyncFatalError(e.what());
}
}
void ScriptApiEnv::initializeEnvironment(ServerEnvironment *env)
{
SCRIPTAPI_PRECHECKHEADER
verbosestream<<"scriptapi_add_environment"<<std::endl;
setEnv(env);
/*
Add ActiveBlockModifiers to environment
*/
// Get core.registered_abms
lua_getglobal(L, "core");
lua_getfield(L, -1, "registered_abms");
luaL_checktype(L, -1, LUA_TTABLE);
int registered_abms = lua_gettop(L);
if(lua_istable(L, registered_abms)){
int table = lua_gettop(L);
lua_pushnil(L);
while(lua_next(L, table) != 0){
// key at index -2 and value at index -1
int id = lua_tonumber(L, -2);
int current_abm = lua_gettop(L);
std::set<std::string> trigger_contents;
lua_getfield(L, current_abm, "nodenames");
if(lua_istable(L, -1)){
int table = lua_gettop(L);
lua_pushnil(L);
while(lua_next(L, table) != 0){
// key at index -2 and value at index -1
luaL_checktype(L, -1, LUA_TSTRING);
trigger_contents.insert(lua_tostring(L, -1));
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
} else if(lua_isstring(L, -1)){
trigger_contents.insert(lua_tostring(L, -1));
}
lua_pop(L, 1);
std::set<std::string> required_neighbors;
lua_getfield(L, current_abm, "neighbors");
if(lua_istable(L, -1)){
int table = lua_gettop(L);
lua_pushnil(L);
while(lua_next(L, table) != 0){
// key at index -2 and value at index -1
luaL_checktype(L, -1, LUA_TSTRING);
required_neighbors.insert(lua_tostring(L, -1));
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
} else if(lua_isstring(L, -1)){
required_neighbors.insert(lua_tostring(L, -1));
}
lua_pop(L, 1);
float trigger_interval = 10.0;
getfloatfield(L, current_abm, "interval", trigger_interval);
int trigger_chance = 50;
getintfield(L, current_abm, "chance", trigger_chance);
bool simple_catch_up = true;
getboolfield(L, current_abm, "catch_up", simple_catch_up);
LuaABM *abm = new LuaABM(L, id, trigger_contents, required_neighbors,
trigger_interval, trigger_chance, simple_catch_up);
env->addActiveBlockModifier(abm);
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
}
lua_pop(L, 1);
}
void ScriptApiEnv::on_emerge_area_completion(
v3s16 blockpos, int action, ScriptCallbackState *state)
{
Server *server = getServer();
// Note that the order of these locks is important! Envlock must *ALWAYS*
// be acquired before attempting to acquire scriptlock, or else ServerThread
// will try to acquire scriptlock after it already owns envlock, thus
// deadlocking EmergeThread and ServerThread
MutexAutoLock envlock(server->m_env_mutex);
SCRIPTAPI_PRECHECKHEADER
int error_handler = PUSH_ERROR_HANDLER(L);
lua_rawgeti(L, LUA_REGISTRYINDEX, state->callback_ref);
luaL_checktype(L, -1, LUA_TFUNCTION);
push_v3s16(L, blockpos);
lua_pushinteger(L, action);
lua_pushinteger(L, state->refcount);
lua_rawgeti(L, LUA_REGISTRYINDEX, state->args_ref);
setOriginDirect(state->origin.c_str());
try {
PCALL_RES(lua_pcall(L, 4, 0, error_handler));
} catch (LuaError &e) {
server->setAsyncFatalError(e.what());
}
lua_pop(L, 1); // Pop error handler
if (state->refcount == 0) {
luaL_unref(L, LUA_REGISTRYINDEX, state->callback_ref);
luaL_unref(L, LUA_REGISTRYINDEX, state->args_ref);
}
}