/
GameTime.cpp
101 lines (76 loc) · 3.35 KB
/
GameTime.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
/*
* Copyright 2011-2017 Arx Libertatis Team (see the AUTHORS file)
*
* This file is part of Arx Libertatis.
*
* Arx Libertatis is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Arx Libertatis is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Arx Libertatis. If not, see <http://www.gnu.org/licenses/>.
*/
/* Based on:
===========================================================================
ARX FATALIS GPL Source Code
Copyright (C) 1999-2010 Arkane Studios SA, a ZeniMax Media company.
This file is part of the Arx Fatalis GPL Source Code ('Arx Fatalis Source Code').
Arx Fatalis Source Code is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
Arx Fatalis Source Code is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with Arx Fatalis Source Code. If not, see
<http://www.gnu.org/licenses/>.
In addition, the Arx Fatalis Source Code is also subject to certain additional terms. You should have received a copy of these
additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Arx
Fatalis Source Code. If not, please request a copy in writing from Arkane Studios at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing Arkane Studios, c/o
ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
// Code: Cyril Meynier
//
// Copyright (c) 1999-2000 ARKANE Studios SA. All rights reserved
#include "core/GameTime.h"
#include "platform/Time.h"
PlatformTime g_platformTime;
GameTime g_gameTime;
void PlatformTime::updateFrame() {
PlatformInstant currentTime = platform::getTime();
if(m_frameStartTime == 0) {
m_frameStartTime = currentTime;
}
arx_assert(currentTime >= m_frameStartTime);
m_lastFrameDuration = currentTime - m_frameStartTime;
// Limit simulation time per frame
m_lastFrameDuration = std::min(m_lastFrameDuration, PlatformDuration(100ms));
m_frameStartTime = currentTime;
}
GameTime::GameTime() {
reset(0);
}
void GameTime::reset(const GameInstant time) {
m_now = time;
m_lastFrameDuration = 0;
m_speed = 1.f;
m_paused = PauseInitial;
}
void GameTime::update(PlatformDuration frameDuration) {
GameDuration delta = frameDuration.value();
arx_assert(delta >= 0);
if(m_speed != 1.f) {
delta -= GameDurationMsf(toMsf(delta) * (1.f - m_speed));
}
arx_assert(delta >= 0);
if(isPaused()) {
delta = 0;
}
m_lastFrameDuration = delta;
m_now += delta;
}