minetest/src/script/lua_api/l_vmanip.cpp

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2013-06-25 17:02:02 +02:00
/*
Minetest
Copyright (C) 2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
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 "lua_api/l_base.h"
#include "lua_api/l_vmanip.h"
///////
#include "cpp_api/scriptapi.h"
#include "common/c_converter.h"
#include "server.h"
#include "emerge.h"
#include "common/c_internal.h"
// garbage collector
int LuaVoxelManip::gc_object(lua_State *L)
{
LuaVoxelManip *o = *(LuaVoxelManip **)(lua_touserdata(L, 1));
delete o;
return 0;
}
int LuaVoxelManip::l_read_chunk(lua_State *L)
{
LuaVoxelManip *o = checkobject(L, 1);
v3s16 bp1 = getNodeBlockPos(read_v3s16(L, 2));
v3s16 bp2 = getNodeBlockPos(read_v3s16(L, 3));
sortBoxVerticies(bp1, bp2);
ManualMapVoxelManipulator *vm = o->vm;
vm->initialEmerge(bp1, bp2);
v3s16 emerged_p1 = vm->m_area.MinEdge;
v3s16 emerged_p2 = vm->m_area.MaxEdge;
int volume = vm->m_area.getVolume();
lua_newtable(L);
for (int i = 0; i != volume; i++) {
lua_Number cid = vm->m_data[i].getContent();
lua_pushnumber(L, cid);
lua_rawseti(L, -2, i + 1);
}
push_v3s16(L, emerged_p1);
push_v3s16(L, emerged_p2);
return 3;
}
int LuaVoxelManip::l_write_chunk(lua_State *L)
{
LuaVoxelManip *o = checkobject(L, 1);
if (!lua_istable(L, 2))
return 0;
ManualMapVoxelManipulator *vm = o->vm;
int volume = vm->m_area.getVolume();
for (int i = 0; i != volume; i++) {
lua_rawgeti(L, 2, i + 1);
content_t c = lua_tonumber(L, -1);
vm->m_data[i].setContent(c);
lua_pop(L, 1);
}
vm->blitBackAll(&o->modified_blocks);
return 0;
}
int LuaVoxelManip::l_update_liquids(lua_State *L)
{
LuaVoxelManip *o = checkobject(L, 1);
ManualMapVoxelManipulator *vm = o->vm;
INodeDefManager *ndef = STACK_TO_SERVER(L)->getNodeDefManager();
Map *map = &(get_scriptapi(L)->getEnv()->getMap());
Mapgen mg;
mg.vm = vm;
mg.ndef = ndef;
mg.updateLiquid(&map->m_transforming_liquid,
vm->m_area.MinEdge, vm->m_area.MaxEdge);
return 0;
}
int LuaVoxelManip::l_calc_lighting(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
LuaVoxelManip *o = checkobject(L, 1);
v3s16 p1 = read_v3s16(L, 2);
v3s16 p2 = read_v3s16(L, 3);
sortBoxVerticies(p1, p2);
ManualMapVoxelManipulator *vm = o->vm;
INodeDefManager *ndef = STACK_TO_SERVER(L)->getNodeDefManager();
EmergeManager *emerge = STACK_TO_SERVER(L)->getEmergeManager();
Mapgen mg;
mg.vm = vm;
mg.ndef = ndef;
mg.water_level = emerge->params->water_level;
mg.calcLighting(p1, p2);
return 0;
}
int LuaVoxelManip::l_set_lighting(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
LuaVoxelManip *o = checkobject(L, 1);
v3s16 p1 = read_v3s16(L, 2);
v3s16 p2 = read_v3s16(L, 3);
sortBoxVerticies(p1, p2);
u8 light;
if (!lua_istable(L, 4))
return 0;
light = getintfield_default(L, 4, "day", 0);
light |= getintfield_default(L, 4, "night", 0);
ManualMapVoxelManipulator *vm = o->vm;
Mapgen mg;
mg.vm = vm;
mg.setLighting(p1, p2, light);
return 0;
}
int LuaVoxelManip::l_update_map(lua_State *L)
{
LuaVoxelManip *o = checkobject(L, 1);
// TODO: Optimize this by using Mapgen::calcLighting() instead
std::map<v3s16, MapBlock *> lighting_mblocks;
std::map<v3s16, MapBlock *> *mblocks = &o->modified_blocks;
lighting_mblocks.insert(mblocks->begin(), mblocks->end());
Map *map = &(get_scriptapi(L)->getEnv()->getMap());
map->updateLighting(lighting_mblocks, *mblocks);
MapEditEvent event;
event.type = MEET_OTHER;
for (std::map<v3s16, MapBlock *>::iterator
it = mblocks->begin();
it != mblocks->end(); ++it)
event.modified_blocks.insert(it->first);
map->dispatchEvent(&event);
mblocks->clear();
return 0;
}
LuaVoxelManip::LuaVoxelManip(Map *map)
{
vm = new ManualMapVoxelManipulator(map);
}
LuaVoxelManip::~LuaVoxelManip()
{
delete vm;
}
// LuaVoxelManip()
// Creates an LuaVoxelManip and leaves it on top of stack
int LuaVoxelManip::create_object(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
Map *map = &(get_scriptapi(L)->getEnv()->getMap());
LuaVoxelManip *o = new LuaVoxelManip(map);
*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
luaL_getmetatable(L, className);
lua_setmetatable(L, -2);
return 1;
}
LuaVoxelManip *LuaVoxelManip::checkobject(lua_State *L, int narg)
{
NO_MAP_LOCK_REQUIRED;
luaL_checktype(L, narg, LUA_TUSERDATA);
void *ud = luaL_checkudata(L, narg, className);
if (!ud)
luaL_typerror(L, narg, className);
return *(LuaVoxelManip **)ud; // unbox pointer
}
void LuaVoxelManip::Register(lua_State *L)
{
lua_newtable(L);
int methodtable = lua_gettop(L);
luaL_newmetatable(L, className);
int metatable = lua_gettop(L);
lua_pushliteral(L, "__metatable");
lua_pushvalue(L, methodtable);
lua_settable(L, metatable); // hide metatable from Lua getmetatable()
lua_pushliteral(L, "__index");
lua_pushvalue(L, methodtable);
lua_settable(L, metatable);
lua_pushliteral(L, "__gc");
lua_pushcfunction(L, gc_object);
lua_settable(L, metatable);
lua_pop(L, 1); // drop metatable
luaL_openlib(L, 0, methods, 0); // fill methodtable
lua_pop(L, 1); // drop methodtable
// Can be created from Lua (VoxelManip()
lua_register(L, className, create_object);
}
const char LuaVoxelManip::className[] = "VoxelManip";
const luaL_reg LuaVoxelManip::methods[] = {
luamethod(LuaVoxelManip, read_chunk),
luamethod(LuaVoxelManip, write_chunk),
luamethod(LuaVoxelManip, update_map),
luamethod(LuaVoxelManip, update_liquids),
luamethod(LuaVoxelManip, calc_lighting),
luamethod(LuaVoxelManip, set_lighting),
{0,0}
};
REGISTER_LUA_REF(LuaVoxelManip);