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Player attrs: permits to remove an attribute by setting value to nil (#5716)

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* Player attrs: permits to remove an attribute by setting value to nil

When doing player:set_attribute("attr", nil) remove attribute

Also remove a useless check on C++ API part (already done by checkplayer)

Fix #5709
This commit is contained in:
Loïc Blot 2017-05-07 12:13:15 +02:00 committed by GitHub
parent 0d7c37943b
commit c1b3ed4180
4 changed files with 29 additions and 14 deletions
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4
doc/lua_api.txt
View File

@ -3028,7 +3028,9 @@ This is basically a reference to a C++ `ServerActiveObject`
* `0`: player is drowning,
* `1`-`10`: remaining number of bubbles
* `11`: bubbles bar is not shown
* `set_attribute(attribute, value)`: sets an extra attribute with value on player
* `set_attribute(attribute, value)`:
* Sets an extra attribute with value on player.
* If value is nil, remove attribute from player.
* `get_attribute(attribute)`: returns value for extra attribute. Returns nil if no attribute found.
* `set_inventory_formspec(formspec)`
* Redefine player's inventory form

2
games/minimal/mods/default/init.lua
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@ -18,6 +18,8 @@ dofile(minetest.get_modpath("default").."/mapgen.lua")
minetest.register_on_joinplayer(function(player)
local cb = function(player)
minetest.chat_send_player(player:get_player_name(), "This is the [minimal] \"Minimal Development Test\" game. Use [minetest_game] for the real thing.")
player:set_attribute("test_attribute", "test_me")
player:set_attribute("remove_this", nil)
end
minetest.after(2.0, cb, player)
end)

10
src/content_sao.h
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@ -277,6 +277,16 @@ public:
return true;
}
inline void removeExtendedAttribute(const std::string &attr)
{
PlayerAttributes::iterator it = m_extra_attributes.find(attr);
if (it == m_extra_attributes.end())
return;
m_extra_attributes.erase(it);
m_extended_attributes_modified = true;
}
inline const PlayerAttributes &getExtendedAttributes()
{
return m_extra_attributes;

5
src/script/lua_api/l_object.cpp
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@ -1202,9 +1202,10 @@ int ObjectRef::l_set_attribute(lua_State *L)
}
std::string attr = luaL_checkstring(L, 2);
if (lua_isnil(L, 3)) {
co->removeExtendedAttribute(attr);
} else {
std::string value = luaL_checkstring(L, 3);
if (co->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
co->setExtendedAttribute(attr, value);
}
return 1;