1 /****************************************************************************** 2 * Warmux is a convivial mass murder game. 3 * Copyright (C) 2001-2011 Warmux Team. 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 18 ****************************************************************************** 19 * The stopwatch can be used to messure how much time elapses. 20 *****************************************************************************/ 21 22 #include "game/stopwatch.h" 23 #include <SDL.h> 24 #include <WARMUX_error.h> 25 Stopwatch()26Stopwatch::Stopwatch() 27 { 28 Reset(); 29 } 30 Reset(Double speed_value)31void Stopwatch::Reset(Double speed_value) 32 { 33 speed = speed_value; 34 paused = false; 35 start_time = SDL_GetTicks(); 36 offset_time = 0; 37 } 38 Stop()39void Stopwatch::Stop() 40 { 41 ASSERT(!paused); 42 // Save last valid time 43 offset_time = GetValue(); 44 paused = true; 45 } 46 Resume()47void Stopwatch::Resume() 48 { 49 ASSERT(paused); 50 paused = false; 51 // Start new time segment 52 start_time = SDL_GetTicks(); 53 } 54 SetPause(bool value)55void Stopwatch::SetPause(bool value) 56 { 57 if (paused == value) 58 return; 59 if (paused) { 60 Resume(); 61 } else { 62 Stop(); 63 } 64 } 65 GetValue() const66uint Stopwatch::GetValue() const 67 { 68 if (paused) 69 return offset_time; 70 else 71 return static_cast<long>(speed * (SDL_GetTicks() - start_time)) + offset_time; 72 } 73 SetSpeed(const Double & sp)74void Stopwatch::SetSpeed(const Double& sp) 75 { 76 // Save current time as a new segment is about to start 77 offset_time = GetValue(); 78 // Start new time segment 79 start_time = SDL_GetTicks(); 80 speed = sp; 81 } 82 Resynch(uint value)83void Stopwatch::Resynch(uint value) 84 { 85 offset_time = value; 86 start_time = SDL_GetTicks(); 87 } 88