1// SuperTux
2// Copyright (C) 2006 Matthias Braun <matze@braunis.de>
3//
4// This program is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// This program is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with this program. If not, see <http://www.gnu.org/licenses/>.
16
17#include <math.h>
18
19#include "supertux/timer.hpp"
20
21Timer::Timer() :
22 m_period(0),
23 m_cycle_start(0),
24 m_cyclic(false)
25{
26}
27
28void
29Timer::start(float period, bool cyclic)
30{
31 m_period = period;
32 m_cyclic = cyclic;
33 m_cycle_start = g_game_time;
34}
35
36bool
37Timer::check()
38{
39 if (m_period == 0)
40 return false;
41
42 if (g_game_time - m_cycle_start >= m_period) {
43 if (m_cyclic) {
44 m_cycle_start = g_game_time - fmodf(g_game_time - m_cycle_start, m_period);
45 } else {
46 m_period = 0;
47 }
48 return true;
49 }
50
51 return false;
52}
53
54/* EOF */
55