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Add EnvRef:find_node_near(pos, radius, nodenames)

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This commit is contained in:
Perttu Ahola 2012-04-06 22:44:42 +03:00
parent e8660cfd8e
commit 578fc5bb44
2 changed files with 47 additions and 3 deletions
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2
doc/lua_api.txt
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@ -646,6 +646,8 @@ methods:
- get_objects_inside_radius(pos, radius)
- set_timeofday(val): val: 0...1; 0 = midnight, 0.5 = midday
- get_timeofday()
- find_node_near(pos, radius, nodenames) -> pos or nil
^ nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
Deprecated:
- add_rat(pos): Add C++ rat object (no-op)
- add_firefly(pos): Add C++ firefly object (no-op)

48
src/scriptapi.cpp
View File

@ -2889,6 +2889,12 @@ private:
static const char className[];
static const luaL_reg methods[];
static int gc_object(lua_State *L) {
EnvRef *o = *(EnvRef **)(lua_touserdata(L, 1));
delete o;
return 0;
}
static EnvRef *checkobject(lua_State *L, int narg)
{
luaL_checktype(L, narg, LUA_TUSERDATA);
@ -3184,9 +3190,44 @@ private:
return 1;
}
static int gc_object(lua_State *L) {
EnvRef *o = *(EnvRef **)(lua_touserdata(L, 1));
delete o;
// EnvRef:find_node_near(pos, radius, nodenames) -> pos or nil
// nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
static int l_find_node_near(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 pos = read_v3s16(L, 2);
int radius = luaL_checkinteger(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);
}
for(int d=1; d<=radius; d++){
core::list<v3s16> list;
getFacePositions(list, d);
for(core::list<v3s16>::Iterator i = list.begin();
i != list.end(); i++){
v3s16 p = pos + (*i);
content_t c = env->getMap().getNodeNoEx(p).getContent();
if(filter.count(c) != 0){
push_v3s16(L, p);
return 1;
}
}
}
return 0;
}
@ -3264,6 +3305,7 @@ const luaL_reg EnvRef::methods[] = {
method(EnvRef, get_objects_inside_radius),
method(EnvRef, set_timeofday),
method(EnvRef, get_timeofday),
method(EnvRef, find_node_near),
{0,0}
};