File: fps.cpp

package info (click to toggle)
warmux 1%3A11.04.1%2Brepack2-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bullseye, buster, sid
  • size: 126,388 kB
  • sloc: cpp: 186,040; xml: 8,909; sh: 3,358; makefile: 1,052; ansic: 713
file content (101 lines) | stat: -rw-r--r-- 2,637 bytes parent folder | download | duplicates (4)
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
/******************************************************************************
 *  Warmux is a convivial mass murder game.
 *  Copyright (C) 2001-2011 Warmux Team.
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 ******************************************************************************
 * Calculate frame per second.
 *****************************************************************************/


#include "include/app.h"
#include "graphic/fps.h"
#include "graphic/text.h"
#include "graphic/video.h"
#include "tool/string_tools.h"

const uint FramePerSecond::MIN_NB_VALUES = 4;

FramePerSecond::~FramePerSecond()
{
  delete text;
}

FramePerSecond::FramePerSecond()
  : total_frames(0)
  , nb_valid_values(-1)
  , average(-1)
  , time_in_second(0)
  , text(NULL)
  , display(true)
{
  for (uint i=0; i<=MIN_NB_VALUES; ++i)
    nb_frames.push_back(0);
}

void FramePerSecond::Reset()
{
  total_frames = 0;
  average = -1;
  nb_frames.clear();

  for (uint i=0; i<=MIN_NB_VALUES; ++i)
    nb_frames.push_back(0);

  time_in_second = SDL_GetTicks()+1000;
  nb_valid_values = -1;

  if(text == NULL)
    text = new Text("");
}

void FramePerSecond::Refresh()
{
  uint nv_temps = SDL_GetTicks();

  // Not yet time to compute: exit!
  if (nv_temps <= time_in_second)
    return;

  // Shift position!
  while (time_in_second < nv_temps){
    time_in_second += 1000;
    nb_frames.pop_back();
    nb_frames.push_front(0);
    if (nb_valid_values < (int)nb_frames.size()-1)
      nb_valid_values++;
  }

  // Recompute average
  if (0 < nb_valid_values){
    average = 0;
    std::list<uint>::const_iterator it=nb_frames.begin();
    ++it;
    for (int i=1; i<=nb_valid_values; ++i, ++it)
      average += *it;
    average /= nb_valid_values;
  }
}

void FramePerSecond::Draw()
{
  if( !display )
    return;
  if( average < 0 )
    return;

  text->SetText(Format(_("%.1f fps"), average));
  text->DrawRightTop(Point2i(GetMainWindow().GetWidth()-1,0));
}