Add EnvRef:get_objects_inside_radius(pos, radius)

This commit is contained in:
Perttu Ahola 2011-12-28 18:18:08 +02:00
parent 7937813c98
commit 1c15f53318
5 changed files with 70 additions and 9 deletions

View File

@ -155,6 +155,7 @@
-- - add_firefly(pos)
-- - get_meta(pos) -- Get a NodeMetaRef at that position
-- - get_player_by_name(name) -- Get an ObjectRef to a player
-- - get_objects_inside_radius(pos, radius)
--
-- NodeMetaRef
-- - get_type()

View File

@ -7,12 +7,18 @@
function on_step(dtime)
-- print("experimental on_step")
--[[
print("celeron55 dir: "..dump(
minetest.env:get_player_by_name("celeron55"):get_look_dir()))
print("celeron55 pitch: "..dump(
minetest.env:get_player_by_name("celeron55"):get_look_pitch()))
print("celeron55 yaw: "..dump(
minetest.env:get_player_by_name("celeron55"):get_look_yaw()))
objs = minetest.env:get_objects_inside_radius({x=0,y=0,z=0}, 10)
for k, obj in pairs(objs) do
name = obj:get_player_name()
if name then
print(name.." at "..dump(obj:getpos()))
print(name.." dir: "..dump(obj:get_look_dir()))
print(name.." pitch: "..dump(obj:get_look_pitch()))
print(name.." yaw: "..dump(obj:get_look_yaw()))
else
print("Some object at "..dump(obj:getpos()))
end
end
--]]
end
minetest.register_globalstep(on_step)

View File

@ -752,6 +752,23 @@ void ServerEnvironment::addActiveBlockModifier(ActiveBlockModifier *abm)
m_abms.push_back(ABMWithState(abm));
}
std::set<u16> ServerEnvironment::getObjectsInsideRadius(v3f pos, float radius)
{
std::set<u16> objects;
for(core::map<u16, ServerActiveObject*>::Iterator
i = m_active_objects.getIterator();
i.atEnd()==false; i++)
{
ServerActiveObject* obj = i.getNode()->getValue();
u16 id = i.getNode()->getKey();
v3f objectpos = obj->getBasePosition();
if(objectpos.getDistanceFrom(pos) > radius)
continue;
objects.insert(id);
}
return objects;
}
void ServerEnvironment::clearAllObjects()
{
infostream<<"ServerEnvironment::clearAllObjects(): "

View File

@ -261,18 +261,24 @@ public:
void activateBlock(MapBlock *block, u32 additional_dtime=0);
/*
ActiveBlockModifiers (TODO)
ActiveBlockModifiers
-------------------------------------------
NOTE: Not used currently (TODO: Use or remove)
*/
void addActiveBlockModifier(ActiveBlockModifier *abm);
/* Other stuff */
/*
Other stuff
-------------------------------------------
*/
// Find all active objects inside a radius around a point
std::set<u16> getObjectsInsideRadius(v3f pos, float radius);
// Clear all objects, loading and going through every MapBlock
void clearAllObjects();
// This makes stuff happen
void step(f32 dtime);
private:

View File

@ -2592,6 +2592,36 @@ private:
return 1;
}
// EnvRef:get_objects_inside_radius(pos, radius)
static int l_get_objects_inside_radius(lua_State *L)
{
// Get the table insert function
lua_getglobal(L, "table");
lua_getfield(L, -1, "insert");
int table_insert = lua_gettop(L);
// Get environemnt
EnvRef *o = checkobject(L, 1);
ServerEnvironment *env = o->m_env;
if(env == NULL) return 0;
// Do it
v3f pos = readFloatPos(L, 2);
float radius = luaL_checknumber(L, 3) * BS;
std::set<u16> ids = env->getObjectsInsideRadius(pos, radius);
lua_newtable(L);
int table = lua_gettop(L);
for(std::set<u16>::const_iterator
i = ids.begin(); i != ids.end(); i++){
ServerActiveObject *obj = env->getActiveObject(*i);
// Insert object reference into table
lua_pushvalue(L, table_insert);
lua_pushvalue(L, table);
objectref_get_or_create(L, obj);
if(lua_pcall(L, 2, 0, 0))
script_error(L, "error: %s", lua_tostring(L, -1));
}
return 1;
}
static int gc_object(lua_State *L) {
EnvRef *o = *(EnvRef **)(lua_touserdata(L, 1));
delete o;
@ -2668,6 +2698,7 @@ const luaL_reg EnvRef::methods[] = {
method(EnvRef, add_firefly),
method(EnvRef, get_meta),
method(EnvRef, get_player_by_name),
method(EnvRef, get_objects_inside_radius),
{0,0}
};