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path: root/builtin/client/chatcommands.lua
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-- Minetest: builtin/client/chatcommands.lua

core.register_on_sending_chat_message(function(message)
	if message:sub(1,2) == ".." then
		return false
	end

	local first_char = message:sub(1,1)
	if first_char == "/" or first_char == "." then
		core.display_chat_message(core.gettext("Issued command: ") .. message)
	end

	if first_char ~= "." then
		return false
	end

	local cmd, param = string.match(message, "^%.([^ ]+) *(.*)")
	param = param or ""

	if not cmd then
		core.display_chat_message("-!- " .. core.gettext("Empty command."))
		return true
	end

	-- Run core.registered_on_chatcommand callbacks.
	if core.run_callbacks(core.registered_on_chatcommand, 5, cmd, param) then
		return true
	end

	local cmd_def = core.registered_chatcommands[cmd]
	if cmd_def then
		core.set_last_run_mod(cmd_def.mod_origin)
		local _, result = cmd_def.func(param)
		if result then
			core.display_chat_message(result)
		end
	else
		core.display_chat_message("-!- " .. core.gettext("Invalid command: ") .. cmd)
	end

	return true
end)

core.register_chatcommand("list_players", {
	description = core.gettext("List online players"),
	func = function(param)
		local player_names = core.get_player_names()
		if not player_names then
			return false, core.gettext("This command is disabled by server.")
		end

		local players = table.concat(player_names, ", ")
		return true, core.gettext("Online players: ") .. players
	end
})

core.register_chatcommand("disconnect", {
	description = core.gettext("Exit to main menu"),
	func = function(param)
		core.disconnect()
	end,
})

core.register_chatcommand("clear_chat_queue", {
	description = core.gettext("Clear the out chat queue"),
	func = function(param)
		core.clear_out_chat_queue()
		return true, core.gettext("The out chat queue is now empty.")
	end,
})

function core.run_server_chatcommand(cmd, param)
	core.send_chat_message("/" .. cmd .. " " .. param)
end
argument */ lua_rawgeti(L, 1, i); /* 2nd argument */ lua_call(L, 2, 1); if (!lua_isnil(L, -1)) return 1; lua_pop(L, 1); /* remove nil result */ } return 0; } static int foreach (lua_State *L) { luaL_checktype(L, 1, LUA_TTABLE); luaL_checktype(L, 2, LUA_TFUNCTION); lua_pushnil(L); /* first key */ while (lua_next(L, 1)) { lua_pushvalue(L, 2); /* function */ lua_pushvalue(L, -3); /* key */ lua_pushvalue(L, -3); /* value */ lua_call(L, 2, 1); if (!lua_isnil(L, -1)) return 1; lua_pop(L, 2); /* remove value and result */ } return 0; } static int maxn (lua_State *L) { lua_Number max = 0; luaL_checktype(L, 1, LUA_TTABLE); lua_pushnil(L); /* first key */ while (lua_next(L, 1)) { lua_pop(L, 1); /* remove value */ if (lua_type(L, -1) == LUA_TNUMBER) { lua_Number v = lua_tonumber(L, -1); if (v > max) max = v; } } lua_pushnumber(L, max); return 1; } static int getn (lua_State *L) { lua_pushinteger(L, aux_getn(L, 1)); return 1; } static int setn (lua_State *L) { luaL_checktype(L, 1, LUA_TTABLE); #ifndef luaL_setn luaL_setn(L, 1, luaL_checkint(L, 2)); #else luaL_error(L, LUA_QL("setn") " is obsolete"); #endif lua_pushvalue(L, 1); return 1; } static int tinsert (lua_State *L) { int e = aux_getn(L, 1) + 1; /* first empty element */ int pos; /* where to insert new element */ switch (lua_gettop(L)) { case 2: { /* called with only 2 arguments */ pos = e; /* insert new element at the end */ break; } case 3: { int i; pos = luaL_checkint(L, 2); /* 2nd argument is the position */ if (pos > e) e = pos; /* `grow' array if necessary */ for (i = e; i > pos; i--) { /* move up elements */ lua_rawgeti(L, 1, i-1); lua_rawseti(L, 1, i); /* t[i] = t[i-1] */ } break; } default: { return luaL_error(L, "wrong number of arguments to " LUA_QL("insert")); } } luaL_setn(L, 1, e); /* new size */ lua_rawseti(L, 1, pos); /* t[pos] = v */ return 0; } static int tremove (lua_State *L) { int e = aux_getn(L, 1); int pos = luaL_optint(L, 2, e); if (!(1 <= pos && pos <= e)) /* position is outside bounds? */ return 0; /* nothing to remove */ luaL_setn(L, 1, e - 1); /* t.n = n-1 */ lua_rawgeti(L, 1, pos); /* result = t[pos] */ for ( ;pos<e; pos++) { lua_rawgeti(L, 1, pos+1); lua_rawseti(L, 1, pos); /* t[pos] = t[pos+1] */ } lua_pushnil(L); lua_rawseti(L, 1, e); /* t[e] = nil */ return 1; } static void addfield (lua_State *L, luaL_Buffer *b, int i) { lua_rawgeti(L, 1, i); if (!lua_isstring(L, -1)) luaL_error(L, "invalid value (%s) at index %d in table for " LUA_QL("concat"), luaL_typename(L, -1), i); luaL_addvalue(b); } static int tconcat (lua_State *L) { luaL_Buffer b; size_t lsep; int i, last; const char *sep = luaL_optlstring(L, 2, "", &lsep); luaL_checktype(L, 1, LUA_TTABLE); i = luaL_optint(L, 3, 1); last = luaL_opt(L, luaL_checkint, 4, luaL_getn(L, 1)); luaL_buffinit(L, &b); for (; i < last; i++) { addfield(L, &b, i); luaL_addlstring(&b, sep, lsep); } if (i == last) /* add last value (if interval was not empty) */ addfield(L, &b, i); luaL_pushresult(&b); return 1; } /* ** {====================================================== ** Quicksort ** (based on `Algorithms in MODULA-3', Robert Sedgewick; ** Addison-Wesley, 1993.) */ static void set2 (lua_State *L, int i, int j) { lua_rawseti(L, 1, i); lua_rawseti(L, 1, j); } static int sort_comp (lua_State *L, int a, int b) { if (!lua_isnil(L, 2)) { /* function? */ int res; lua_pushvalue(L, 2); lua_pushvalue(L, a-1); /* -1 to compensate function */ lua_pushvalue(L, b-2); /* -2 to compensate function and `a' */ lua_call(L, 2, 1); res = lua_toboolean(L, -1); lua_pop(L, 1); return res; } else /* a < b? */ return lua_lessthan(L, a, b); } static void auxsort (lua_State *L, int l, int u) { while (l < u) { /* for tail recursion */ int i, j; /* sort elements a[l], a[(l+u)/2] and a[u] */ lua_rawgeti(L, 1, l); lua_rawgeti(L, 1, u); if (sort_comp(L, -1, -2)) /* a[u] < a[l]? */ set2(L, l, u); /* swap a[l] - a[u] */ else lua_pop(L, 2); if (u-l == 1) break; /* only 2 elements */ i = (l+u)/2; lua_rawgeti(L, 1, i); lua_rawgeti(L, 1, l); if (sort_comp(L, -2, -1)) /* a[i]<a[l]? */ set2(L, i, l); else {