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Make supplying empty formspec strings close the formspec (#4737)
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This will only happen if the formname matches or if formname is "".
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orwell96 authored and Zeno- committed Nov 22, 2016
1 parent dbeb322 commit 0d1c959
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Showing 4 changed files with 38 additions and 10 deletions.
4 changes: 4 additions & 0 deletions builtin/game/misc.lua
Original file line number Diff line number Diff line change
Expand Up @@ -239,3 +239,7 @@ else

end

function core.close_formspec(player_name, formname)
return minetest.show_formspec(player_name, formname, "")
end

7 changes: 7 additions & 0 deletions doc/lua_api.txt
Original file line number Diff line number Diff line change
Expand Up @@ -2316,6 +2316,13 @@ and `minetest.auth_reload` call the authetification handler.
* `formname`: name passed to `on_player_receive_fields` callbacks.
It should follow the `"modname:<whatever>"` naming convention
* `formspec`: formspec to display
* `minetest.close_formspec(playername, formname)`
* `playername`: name of player to close formspec
* `formname`: has to exactly match the one given in show_formspec, or the formspec will
not close.
* calling show_formspec(playername, formname, "") is equal to this expression
* to close a formspec regardless of the formname, call
minetest.close_formspec(playername, ""). USE THIS ONLY WHEN ABSOLUTELY NECESSARY!
* `minetest.formspec_escape(string)`: returns a string
* escapes the characters "[", "]", "\", "," and ";", which can not be used in formspecs
* `minetest.explode_table_event(string)`: returns a table
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29 changes: 21 additions & 8 deletions src/game.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -1205,6 +1205,7 @@ static inline void create_formspec_menu(GUIFormSpecMenu **cur_formspec,
(*cur_formspec)->setFormSource(fs_src);
(*cur_formspec)->setTextDest(txt_dest);
}

}

#ifdef __ANDROID__
Expand Down Expand Up @@ -1753,6 +1754,8 @@ class Game {
ChatBackend *chat_backend;

GUIFormSpecMenu *current_formspec;
//default: "". If other than "", empty show_formspec packets will only close the formspec when the formname matches
std::string cur_formname;

EventManager *eventmgr;
QuicktuneShortcutter *quicktune;
Expand Down Expand Up @@ -1841,6 +1844,7 @@ Game::Game() :
soundmaker(NULL),
chat_backend(NULL),
current_formspec(NULL),
cur_formname(""),
eventmgr(NULL),
quicktune(NULL),
gui_chat_console(NULL),
Expand Down Expand Up @@ -3005,6 +3009,7 @@ void Game::openInventory()

create_formspec_menu(&current_formspec, client, gamedef, texture_src,
device, &input->joystick, fs_src, txt_dst, client);
cur_formname = "";

InventoryLocation inventoryloc;
inventoryloc.setCurrentPlayer();
Expand Down Expand Up @@ -3484,14 +3489,21 @@ void Game::processClientEvents(CameraOrientation *cam, float *damage_flash)
player->hurt_tilt_strength = 0;

} else if (event.type == CE_SHOW_FORMSPEC) {
FormspecFormSource *fs_src =
new FormspecFormSource(*(event.show_formspec.formspec));
TextDestPlayerInventory *txt_dst =
new TextDestPlayerInventory(client, *(event.show_formspec.formname));

create_formspec_menu(&current_formspec, client, gamedef,
texture_src, device, &input->joystick,
fs_src, txt_dst, client);
if (*(event.show_formspec.formspec) == "") {
if (current_formspec && ( *(event.show_formspec.formname) == "" || *(event.show_formspec.formname) == cur_formname) ){
current_formspec->quitMenu();
}
} else {
FormspecFormSource *fs_src =
new FormspecFormSource(*(event.show_formspec.formspec));
TextDestPlayerInventory *txt_dst =
new TextDestPlayerInventory(client, *(event.show_formspec.formname));

create_formspec_menu(&current_formspec, client, gamedef,
texture_src, device, &input->joystick,
fs_src, txt_dst, client);
cur_formname = *(event.show_formspec.formname);
}

delete(event.show_formspec.formspec);
delete(event.show_formspec.formname);
Expand Down Expand Up @@ -3955,6 +3967,7 @@ void Game::handlePointingAtNode(GameRunData *runData,

create_formspec_menu(&current_formspec, client, gamedef,
texture_src, device, &input->joystick, fs_src, txt_dst, client);
cur_formname = "";

current_formspec->setFormSpec(meta->getString("formspec"), inventoryloc);
} else {
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8 changes: 6 additions & 2 deletions src/server.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -1647,8 +1647,12 @@ void Server::SendShowFormspecMessage(u16 peer_id, const std::string &formspec,
DSTACK(FUNCTION_NAME);

NetworkPacket pkt(TOCLIENT_SHOW_FORMSPEC, 0 , peer_id);

pkt.putLongString(FORMSPEC_VERSION_STRING + formspec);
if (formspec == "" ){
//the client should close the formspec
pkt.putLongString("");
} else {
pkt.putLongString(FORMSPEC_VERSION_STRING + formspec);
}
pkt << formname;

Send(&pkt);
Expand Down

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