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/Engine.hh>
  30 #include <Moof/OpenGL.hh>
  31 #include <Moof/Video.hh>
  32
  33 #include "Hud.hh"
  34
  35
  36 ProgressBar::ProgressBar(const Tilemap& tilemap, Tilemap::Index index) :
  37         mProgress(0.0),
  38         mTilemap(tilemap)
  39 {
  40         tilemap.getTileCoords(index, mTexCoords);
  41
  42         Mf::Scalar half = (mTexCoords[2] - mTexCoords[0]) / 2.0 + mTexCoords[0];
  43         mMidCoords[0] = half - 0.01;
  44         mMidCoords[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         mWidth = rect.max[0] - rect.min[0] - height;
  53         // assert width > 0
  54
  55         mVertices[0] = rect.min;
  56         mVertices[1] = Mf::Vector2(rect.min[0] + halfHeight, rect.min[1]);
  57         mVertices[2] = mVertices[1];
  58         mVertices[3] = Mf::Vector2(rect.min[0] + height,     rect.min[1]);
  59         mVertices[4] = Mf::Vector2(rect.min[0] + height,     rect.max[1]);
  60         mVertices[5] = Mf::Vector2(rect.min[0] + halfHeight, rect.max[1]);
  61         mVertices[6] = mVertices[5];
  62         mVertices[7] = Mf::Vector2(rect.min[0],              rect.max[1]);
  63
  64         setProgress(mProgress);
  65 }
  66
  67 void ProgressBar::setProgress(Mf::Scalar progress)
  68 {
  69         Mf::Scalar halfHeight = (mVertices[7][1] - mVertices[0][1]) / 2.0;
  70
  71         mVertices[2][0] = mVertices[1][0] + progress * mWidth;
  72         mVertices[3][0] = mVertices[1][0] + progress * mWidth + halfHeight;
  73         mVertices[4][0] = mVertices[1][0] + progress * mWidth + halfHeight;
  74         mVertices[5][0] = mVertices[1][0] + progress * mWidth;
  75
  76         mProgress = progress;
  77 }
  78
  79 void ProgressBar::draw(Mf::Scalar alpha) const
  80 {
  81         if (Mf::isEqual(mProgress, 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         mTilemap.bind();
  89
  90         glBegin(GL_QUADS);
  91                 glTexCoord2(mTexCoords[0], mTexCoords[1]);
  92                 glVertex2v(mVertices[0].data());
  93                 glTexCoord2(mMidCoords[0], mTexCoords[3]);
  94                 glVertex2v(mVertices[1].data());
  95                 glTexCoord2(mMidCoords[0], mTexCoords[5]);
  96                 glVertex2v(mVertices[6].data());
  97                 glTexCoord2(mTexCoords[6], mTexCoords[7]);
  98                 glVertex2v(mVertices[7].data());
  99
 100                 glTexCoord2(mMidCoords[0], mTexCoords[1]);
 101                 glVertex2v(mVertices[1].data());
 102                 glTexCoord2(mMidCoords[1], mTexCoords[3]);
 103                 glVertex2v(mVertices[2].data());
 104                 glTexCoord2(mMidCoords[1], mTexCoords[5]);
 105                 glVertex2v(mVertices[5].data());
 106                 glTexCoord2(mMidCoords[0], mTexCoords[7]);
 107                 glVertex2v(mVertices[6].data());
 108
 109                 glTexCoord2(mMidCoords[1], mTexCoords[1]);
 110                 glVertex2v(mVertices[2].data());
 111                 glTexCoord2(mTexCoords[2], mTexCoords[3]);
 112                 glVertex2v(mVertices[3].data());
 113                 glTexCoord2(mTexCoords[4], mTexCoords[5]);
 114                 glVertex2v(mVertices[4].data());
 115                 glTexCoord2(mMidCoords[1], mTexCoords[7]);
 116                 glVertex2v(mVertices[5].data());
 117         glEnd();
 118 }
 119
 120
 121 Hud::Hud(GameLayer::State& state) :
 122         mState(state),
 123         mBar1(Tilemap("StatusBars"), 0),
 124         mBar2(Tilemap("StatusBars"), 2),
 125         mFont("Font")
 126 {
 127         Mf::VideoP video = Mf::Engine::getInstance().getVideo();
 128         resize(video->getWidth(), video->getHeight());
 129 }
 130
 131
 132 void Hud::resize(int width, int height)
 133 {
 134         cml::matrix_orthographic_RH(mProjection,
 135                         SCALAR(0.0),
 136                         Mf::Scalar(width), SCALAR(0.0), Mf::Scalar(height),
 137                         SCALAR(1.0), SCALAR(-1.0), cml::z_clip_neg_one);
 138
 139         // position the two progress bars at the top-left of the screen
 140         mBar1.resize(Mf::Rectangle(20, height - 51,
 141                                 0.7 * width, height - 3));
 142         mBar2.resize(Mf::Rectangle(20, height - 28,
 143                                 0.7 * width, height - 70));
 144
 145         setBar1Progress(0.05);
 146         setBar2Progress(0.0);
 147 }
 148
 149
 150 void Hud::update(Mf::Engine& engine, Mf::Scalar t, Mf::Scalar dt)
 151 {
 152         mState.interp.update(t, dt);
 153         setBar1Progress(mState.interp.getState(dt));
 154         setBar2Progress(1.0 - mState.interp.getState(dt));
 155 }
 156
 157 void Hud::draw(Mf::Engine& engine, Mf::Scalar alpha) const
 158 {
 159         glMatrixMode(GL_PROJECTION);
 160         glPushMatrix();
 161         glLoadMatrix(mProjection.data());
 162
 163         glMatrixMode(GL_MODELVIEW);
 164         glPushMatrix();
 165         glLoadIdentity();
 166
 167         glDisable(GL_DEPTH_TEST);
 168         glEnable(GL_BLEND);
 169
 170         mBar1.draw();
 171         mBar2.draw();
 172
 173         glDisable(GL_BLEND);
 174         glEnable(GL_DEPTH_TEST);
 175
 176         glMatrixMode(GL_PROJECTION);
 177         glPopMatrix();
 178
 179         glMatrixMode(GL_MODELVIEW);
 180         glPopMatrix();
 181 }
 182
 183 bool Hud::handleEvent(Mf::Engine& engine, const Mf::Event& event)
 184 {
 185         switch (event.type)
 186         {
 187                 case SDL_KEYUP:
 188                         if (event.key.keysym.sym == SDLK_h)
 189                         {
 190                                 // don't want the hud anymore
 191                                 engine.pop(this);
 192                                 return true;
 193                         }
 194                         break;
 195
 196                 case SDL_VIDEORESIZE:
 197                         resize(event.resize.w, event.resize.h);
 198                         break;
 199         }
 200
 201         return false;
 202 }
 203
 204
 205 /** vim: set ts=4 sw=4 tw=80: *************************************************/
 206