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EnvRef:find_nodes_in_area(minp, maxp, nodenames)

This commit is contained in:
Perttu Ahola 2012-04-08 14:37:12 +03:00
parent b58ee690a3
commit e29a5b11e4
2 changed files with 52 additions and 0 deletions
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2
doc/lua_api.txt
View File

@ -668,6 +668,8 @@ methods:
- get_timeofday()
- find_node_near(pos, radius, nodenames) -> pos or nil
^ nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
- find_nodes_in_area(minp, maxp, nodenames) -> list of positions
^ nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
- get_perlin(seeddiff, octaves, persistence, scale)
^ Return world-specific perlin noise (int(worldseed)+seeddiff)
Deprecated:

50
src/scriptapi.cpp
View File

@ -3346,6 +3346,55 @@ private:
return 0;
}
// EnvRef:find_nodes_in_area(minp, maxp, nodenames) -> list of positions
// nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
static int l_find_nodes_in_area(lua_State *L)
{
EnvRef *o = checkobject(L, 1);
ServerEnvironment *env = o->m_env;
if(env == NULL) return 0;
INodeDefManager *ndef = get_server(L)->ndef();
v3s16 minp = read_v3s16(L, 2);
v3s16 maxp = read_v3s16(L, 3);
std::set<content_t> filter;
if(lua_istable(L, 4)){
int table = 4;
lua_pushnil(L);
while(lua_next(L, table) != 0){
// key at index -2 and value at index -1
luaL_checktype(L, -1, LUA_TSTRING);
ndef->getIds(lua_tostring(L, -1), filter);
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
} else if(lua_isstring(L, 4)){
ndef->getIds(lua_tostring(L, 4), filter);
}
// Get the table insert function
lua_getglobal(L, "table");
lua_getfield(L, -1, "insert");
int table_insert = lua_gettop(L);
lua_newtable(L);
int table = lua_gettop(L);
for(s16 x=minp.X; x<=maxp.X; x++)
for(s16 y=minp.Y; y<=maxp.Y; y++)
for(s16 z=minp.Z; z<=maxp.Z; z++)
{
v3s16 p(x,y,z);
content_t c = env->getMap().getNodeNoEx(p).getContent();
if(filter.count(c) != 0){
lua_pushvalue(L, table_insert);
lua_pushvalue(L, table);
push_v3s16(L, p);
if(lua_pcall(L, 2, 0, 0))
script_error(L, "error: %s", lua_tostring(L, -1));
}
}
return 1;
}
// EnvRef:get_perlin(seeddiff, octaves, persistence, scale)
// returns world-specific PerlinNoise
static int l_get_perlin(lua_State *L)
@ -3441,6 +3490,7 @@ const luaL_reg EnvRef::methods[] = {
method(EnvRef, set_timeofday),
method(EnvRef, get_timeofday),
method(EnvRef, find_node_near),
method(EnvRef, find_nodes_in_area),
method(EnvRef, get_perlin),
{0,0}
};