Dogcows Code - chaz/yoink/blob - src/Hud.cc

   1
   2 /*******************************************************************************
   3
   4  Copyright (c) 2009, Charles McGarvey
   5  All rights reserved.
   6
   7  Redistribution   and   use  in  source  and  binary  forms,  with  or  without
   8  modification, are permitted provided that the following conditions are met:
   9
  10    * Redistributions  of  source  code  must retain the above copyright notice,
  11      this list of conditions and the following disclaimer.
  12    * Redistributions  in binary form must reproduce the above copyright notice,
  13      this  list of conditions and the following disclaimer in the documentation
  14      and/or other materials provided with the distribution.
  15
  16  THIS  SOFTWARE  IS  PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  17  AND  ANY  EXPRESS  OR  IMPLIED  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19  DISCLAIMED.  IN  NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  20  FOR  ANY  DIRECT,  INDIRECT,  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  DAMAGES  (INCLUDING,  BUT  NOT  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  22  SERVICES;  LOSS  OF  USE,  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  23  CAUSED  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  24  OR  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  25  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26
  27 *******************************************************************************/
  28
  29 #include <Moof/OpenGL.hh>
  30
  31 #include "Hud.hh"
  32
  33 #include <iostream>
  34
  35
  36 ProgressBar::ProgressBar(const Mf::Tilemap& tilemap, Mf::Tilemap::Index index) :
  37         progress_(0.0),
  38         tilemap_(tilemap)
  39 {
  40         tilemap.getTileCoords(index, texCoords_);
  41
  42         Mf::Scalar half = (texCoords_[2] - texCoords_[0]) / 2.0 + texCoords_[0];
  43         midCoords_[0] = half - 0.01;
  44         midCoords_[1] = half + 0.01;
  45 }
  46
  47 void ProgressBar::resize(const Mf::Rectangle& rect)
  48 {
  49         Mf::Scalar height = rect.max[1] - rect.min[1];
  50         Mf::Scalar halfHeight = height / 2.0;
  51
  52         width_ = rect.max[0] - rect.min[0] - height;
  53         // assert width > 0
  54
  55         vertices_[0] = rect.min;
  56         vertices_[1] = Mf::Vector2(rect.min[0] + halfHeight, rect.min[1]);
  57         vertices_[2] = vertices_[1];
  58         vertices_[3] = Mf::Vector2(rect.min[0] + height,     rect.min[1]);
  59         vertices_[4] = Mf::Vector2(rect.min[0] + height,     rect.max[1]);
  60         vertices_[5] = Mf::Vector2(rect.min[0] + halfHeight, rect.max[1]);
  61         vertices_[6] = vertices_[5];
  62         vertices_[7] = Mf::Vector2(rect.min[0],              rect.max[1]);
  63
  64         setProgress(progress_);
  65 }
  66
  67 void ProgressBar::setProgress(Mf::Scalar progress)
  68 {
  69         Mf::Scalar halfHeight = (vertices_[7][1] - vertices_[0][1]) / 2.0;
  70
  71         vertices_[2][0] = vertices_[1][0] + progress * width_;
  72         vertices_[3][0] = vertices_[1][0] + progress * width_ + halfHeight;
  73         vertices_[4][0] = vertices_[1][0] + progress * width_ + halfHeight;
  74         vertices_[5][0] = vertices_[1][0] + progress * width_;
  75
  76         progress_ = progress;
  77 }
  78
  79 void ProgressBar::draw(Mf::Scalar alpha) const
  80 {
  81         if (Mf::isEqual(progress_, 0.0))
  82         {
  83                 // don't draw anything if the progress is 0%
  84                 return;
  85         }
  86
  87         glColor4f(1.0f, 1.0f, 1.0f, 0.85f);
  88         tilemap_.bind();
  89
  90         glBegin(GL_QUADS);
  91                 glTexCoord2(texCoords_[0], texCoords_[1]);
  92                 glVertex2v(vertices_[0].data());
  93                 glTexCoord2(midCoords_[0], texCoords_[3]);
  94                 glVertex2v(vertices_[1].data());
  95                 glTexCoord2(midCoords_[0], texCoords_[5]);
  96                 glVertex2v(vertices_[6].data());
  97                 glTexCoord2(texCoords_[6], texCoords_[7]);
  98                 glVertex2v(vertices_[7].data());
  99
 100                 glTexCoord2(midCoords_[0], texCoords_[1]);
 101                 glVertex2v(vertices_[1].data());
 102                 glTexCoord2(midCoords_[1], texCoords_[3]);
 103                 glVertex2v(vertices_[2].data());
 104                 glTexCoord2(midCoords_[1], texCoords_[5]);
 105                 glVertex2v(vertices_[5].data());
 106                 glTexCoord2(midCoords_[0], texCoords_[7]);
 107                 glVertex2v(vertices_[6].data());
 108
 109                 glTexCoord2(midCoords_[1], texCoords_[1]);
 110                 glVertex2v(vertices_[2].data());
 111                 glTexCoord2(texCoords_[2], texCoords_[3]);
 112                 glVertex2v(vertices_[3].data());
 113                 glTexCoord2(texCoords_[4], texCoords_[5]);
 114                 glVertex2v(vertices_[4].data());
 115                 glTexCoord2(midCoords_[1], texCoords_[7]);
 116                 glVertex2v(vertices_[5].data());
 117         glEnd();
 118 }
 119
 120
 121 Hud::Hud() :
 122         bar1_(Mf::Tilemap("StatusBars"), 0),
 123         bar2_(Mf::Tilemap("StatusBars"), 2),
 124         font_("Font")
 125 {
 126         resize(800, 600);
 127 }
 128
 129
 130 void Hud::resize(int width, int height)
 131 {
 132         cml::matrix_orthographic_RH( projection_,
 133                         0.0,
 134                         Mf::Scalar(width), 0.0, Mf::Scalar(height),
 135                         1.0, -1.0, cml::z_clip_neg_one);
 136
 137         // position the two progress bars at the top-left of the screen
 138         bar1_.resize(Mf::Rectangle(20, height - 51,
 139                                 0.7 * width, height - 3));
 140         bar2_.resize(Mf::Rectangle(20, height - 28,
 141                                 0.7 * width, height - 70));
 142
 143         setBar1Progress(0.05);
 144         setBar2Progress(0.0);
 145 }
 146
 147
 148 void Hud::draw(Mf::Scalar alpha) const
 149 {
 150         glMatrixMode(GL_PROJECTION);
 151         glPushMatrix();
 152         glLoadMatrix(projection_.data());
 153
 154         glMatrixMode(GL_MODELVIEW);
 155         glPushMatrix();
 156         glLoadIdentity();
 157
 158         glDisable(GL_DEPTH_TEST);
 159         glEnable(GL_BLEND);
 160
 161         bar1_.draw();
 162         bar2_.draw();
 163
 164         glDisable(GL_BLEND);
 165         glEnable(GL_DEPTH_TEST);
 166
 167         glMatrixMode(GL_PROJECTION);
 168         glPopMatrix();
 169
 170         glMatrixMode(GL_MODELVIEW);
 171         glPopMatrix();
 172 }
 173
 174
 175 /** vim: set ts=4 sw=4 tw=80: *************************************************/
 176