minetest/src/script/lua_api/l_vmanip.cpp

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/*
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_vmanip.h"
#include "lua_api/l_internal.h"
#include "common/c_content.h"
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#include "common/c_converter.h"
#include "emerge.h"
#include "environment.h"
#include "map.h"
#include "mapblock.h"
#include "server.h"
#include "mapgen.h"
#include "voxelalgorithms.h"
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// garbage collector
int LuaVoxelManip::gc_object(lua_State *L)
{
LuaVoxelManip *o = *(LuaVoxelManip **)(lua_touserdata(L, 1));
delete o;
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return 0;
}
int LuaVoxelManip::l_read_from_map(lua_State *L)
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{
MAP_LOCK_REQUIRED;
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LuaVoxelManip *o = checkobject(L, 1);
MMVManip *vm = o->vm;
v3s16 bp1 = getNodeBlockPos(check_v3s16(L, 2));
v3s16 bp2 = getNodeBlockPos(check_v3s16(L, 3));
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sortBoxVerticies(bp1, bp2);
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vm->initialEmerge(bp1, bp2);
push_v3s16(L, vm->m_area.MinEdge);
push_v3s16(L, vm->m_area.MaxEdge);
return 2;
}
int LuaVoxelManip::l_get_data(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
LuaVoxelManip *o = checkobject(L, 1);
bool use_buffer = lua_istable(L, 2);
MMVManip *vm = o->vm;
u32 volume = vm->m_area.getVolume();
if (use_buffer)
lua_pushvalue(L, 2);
else
lua_newtable(L);
for (u32 i = 0; i != volume; i++) {
lua_Integer cid = vm->m_data[i].getContent();
lua_pushinteger(L, cid);
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lua_rawseti(L, -2, i + 1);
}
return 1;
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}
int LuaVoxelManip::l_set_data(lua_State *L)
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{
NO_MAP_LOCK_REQUIRED;
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LuaVoxelManip *o = checkobject(L, 1);
MMVManip *vm = o->vm;
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if (!lua_istable(L, 2))
return 0;
u32 volume = vm->m_area.getVolume();
for (u32 i = 0; i != volume; i++) {
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lua_rawgeti(L, 2, i + 1);
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content_t c = lua_tointeger(L, -1);
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vm->m_data[i].setContent(c);
lua_pop(L, 1);
}
return 0;
}
int LuaVoxelManip::l_write_to_map(lua_State *L)
{
MAP_LOCK_REQUIRED;
LuaVoxelManip *o = checkobject(L, 1);
bool update_light = lua_isboolean(L, 2) ? lua_toboolean(L, 2) : true;
GET_ENV_PTR;
ServerMap *map = &(env->getServerMap());
if (o->is_mapgen_vm || !update_light) {
o->vm->blitBackAll(&(o->modified_blocks));
} else {
voxalgo::blit_back_with_light(map, o->vm,
&(o->modified_blocks));
}
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MapEditEvent event;
event.type = MEET_OTHER;
for (std::map<v3s16, MapBlock *>::iterator it = o->modified_blocks.begin();
it != o->modified_blocks.end(); ++it)
event.modified_blocks.insert(it->first);
map->dispatchEvent(&event);
o->modified_blocks.clear();
return 0;
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}
int LuaVoxelManip::l_get_node_at(lua_State *L)
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{
NO_MAP_LOCK_REQUIRED;
INodeDefManager *ndef = getServer(L)->getNodeDefManager();
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LuaVoxelManip *o = checkobject(L, 1);
v3s16 pos = check_v3s16(L, 2);
pushnode(L, o->vm->getNodeNoExNoEmerge(pos), ndef);
return 1;
}
int LuaVoxelManip::l_set_node_at(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
INodeDefManager *ndef = getServer(L)->getNodeDefManager();
LuaVoxelManip *o = checkobject(L, 1);
v3s16 pos = check_v3s16(L, 2);
MapNode n = readnode(L, 3, ndef);
o->vm->setNodeNoEmerge(pos, n);
return 0;
}
int LuaVoxelManip::l_update_liquids(lua_State *L)
{
GET_ENV_PTR;
LuaVoxelManip *o = checkobject(L, 1);
Map *map = &(env->getMap());
INodeDefManager *ndef = getServer(L)->getNodeDefManager();
MMVManip *vm = o->vm;
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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;
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LuaVoxelManip *o = checkobject(L, 1);
if (!o->is_mapgen_vm)
return 0;
INodeDefManager *ndef = getServer(L)->getNodeDefManager();
EmergeManager *emerge = getServer(L)->getEmergeManager();
MMVManip *vm = o->vm;
v3s16 yblock = v3s16(0, 1, 0) * MAP_BLOCKSIZE;
v3s16 fpmin = vm->m_area.MinEdge;
v3s16 fpmax = vm->m_area.MaxEdge;
v3s16 pmin = lua_istable(L, 2) ? check_v3s16(L, 2) : fpmin + yblock;
v3s16 pmax = lua_istable(L, 3) ? check_v3s16(L, 3) : fpmax - yblock;
bool propagate_shadow = lua_isboolean(L, 4) ? lua_toboolean(L, 4) : true;
sortBoxVerticies(pmin, pmax);
if (!vm->m_area.contains(VoxelArea(pmin, pmax)))
throw LuaError("Specified voxel area out of VoxelManipulator bounds");
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Mapgen mg;
mg.vm = vm;
mg.ndef = ndef;
mg.water_level = emerge->mgparams->water_level;
mg.calcLighting(pmin, pmax, fpmin, fpmax, propagate_shadow);
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return 0;
}
int LuaVoxelManip::l_set_lighting(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
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LuaVoxelManip *o = checkobject(L, 1);
if (!o->is_mapgen_vm)
return 0;
if (!lua_istable(L, 2))
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return 0;
u8 light;
light = (getintfield_default(L, 2, "day", 0) & 0x0F);
light |= (getintfield_default(L, 2, "night", 0) & 0x0F) << 4;
MMVManip *vm = o->vm;
v3s16 yblock = v3s16(0, 1, 0) * MAP_BLOCKSIZE;
v3s16 pmin = lua_istable(L, 3) ? check_v3s16(L, 3) : vm->m_area.MinEdge + yblock;
v3s16 pmax = lua_istable(L, 4) ? check_v3s16(L, 4) : vm->m_area.MaxEdge - yblock;
sortBoxVerticies(pmin, pmax);
if (!vm->m_area.contains(VoxelArea(pmin, pmax)))
throw LuaError("Specified voxel area out of VoxelManipulator bounds");
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Mapgen mg;
mg.vm = vm;
mg.setLighting(light, pmin, pmax);
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return 0;
}
int LuaVoxelManip::l_get_light_data(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
LuaVoxelManip *o = checkobject(L, 1);
MMVManip *vm = o->vm;
u32 volume = vm->m_area.getVolume();
lua_newtable(L);
for (u32 i = 0; i != volume; i++) {
lua_Integer light = vm->m_data[i].param1;
lua_pushinteger(L, light);
lua_rawseti(L, -2, i + 1);
}
return 1;
}
int LuaVoxelManip::l_set_light_data(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
LuaVoxelManip *o = checkobject(L, 1);
MMVManip *vm = o->vm;
if (!lua_istable(L, 2))
return 0;
u32 volume = vm->m_area.getVolume();
for (u32 i = 0; i != volume; i++) {
lua_rawgeti(L, 2, i + 1);
u8 light = lua_tointeger(L, -1);
vm->m_data[i].param1 = light;
lua_pop(L, 1);
}
return 0;
}
int LuaVoxelManip::l_get_param2_data(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
LuaVoxelManip *o = checkobject(L, 1);
bool use_buffer = lua_istable(L, 2);
MMVManip *vm = o->vm;
u32 volume = vm->m_area.getVolume();
if (use_buffer)
lua_pushvalue(L, 2);
else
lua_newtable(L);
for (u32 i = 0; i != volume; i++) {
lua_Integer param2 = vm->m_data[i].param2;
lua_pushinteger(L, param2);
lua_rawseti(L, -2, i + 1);
}
return 1;
}
int LuaVoxelManip::l_set_param2_data(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
LuaVoxelManip *o = checkobject(L, 1);
MMVManip *vm = o->vm;
if (!lua_istable(L, 2))
return 0;
u32 volume = vm->m_area.getVolume();
for (u32 i = 0; i != volume; i++) {
lua_rawgeti(L, 2, i + 1);
u8 param2 = lua_tointeger(L, -1);
vm->m_data[i].param2 = param2;
lua_pop(L, 1);
}
return 0;
}
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int LuaVoxelManip::l_update_map(lua_State *L)
{
return 0;
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}
int LuaVoxelManip::l_was_modified(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
LuaVoxelManip *o = checkobject(L, 1);
MMVManip *vm = o->vm;
lua_pushboolean(L, vm->m_is_dirty);
return 1;
}
int LuaVoxelManip::l_get_emerged_area(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
LuaVoxelManip *o = checkobject(L, 1);
push_v3s16(L, o->vm->m_area.MinEdge);
push_v3s16(L, o->vm->m_area.MaxEdge);
return 2;
}
LuaVoxelManip::LuaVoxelManip(MMVManip *mmvm, bool is_mg_vm) :
is_mapgen_vm(is_mg_vm),
vm(mmvm)
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{
}
LuaVoxelManip::LuaVoxelManip(Map *map) : vm(new MMVManip(map))
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{
}
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LuaVoxelManip::LuaVoxelManip(Map *map, v3s16 p1, v3s16 p2)
{
vm = new MMVManip(map);
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v3s16 bp1 = getNodeBlockPos(p1);
v3s16 bp2 = getNodeBlockPos(p2);
sortBoxVerticies(bp1, bp2);
vm->initialEmerge(bp1, bp2);
}
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LuaVoxelManip::~LuaVoxelManip()
{
if (!is_mapgen_vm)
delete vm;
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}
// LuaVoxelManip()
// Creates an LuaVoxelManip and leaves it on top of stack
int LuaVoxelManip::create_object(lua_State *L)
{
GET_ENV_PTR;
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Map *map = &(env->getMap());
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LuaVoxelManip *o = (lua_istable(L, 1) && lua_istable(L, 2)) ?
new LuaVoxelManip(map, check_v3s16(L, 1), check_v3s16(L, 2)) :
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new LuaVoxelManip(map);
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*(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;
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luaL_checktype(L, narg, LUA_TUSERDATA);
void *ud = luaL_checkudata(L, narg, className);
if (!ud)
luaL_typerror(L, narg, className);
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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())
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lua_register(L, className, create_object);
}
const char LuaVoxelManip::className[] = "VoxelManip";
const luaL_Reg LuaVoxelManip::methods[] = {
luamethod(LuaVoxelManip, read_from_map),
luamethod(LuaVoxelManip, get_data),
luamethod(LuaVoxelManip, set_data),
luamethod(LuaVoxelManip, get_node_at),
luamethod(LuaVoxelManip, set_node_at),
luamethod(LuaVoxelManip, write_to_map),
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luamethod(LuaVoxelManip, update_map),
luamethod(LuaVoxelManip, update_liquids),
luamethod(LuaVoxelManip, calc_lighting),
luamethod(LuaVoxelManip, set_lighting),
luamethod(LuaVoxelManip, get_light_data),
luamethod(LuaVoxelManip, set_light_data),
luamethod(LuaVoxelManip, get_param2_data),
luamethod(LuaVoxelManip, set_param2_data),
luamethod(LuaVoxelManip, was_modified),
luamethod(LuaVoxelManip, get_emerged_area),
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{0,0}
};