Dogcows Code - chaz/yoink/blob - src/Character.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 <iostream>
  30
  31 #include "Character.hh"
  32 #include "Log.hh"
  33
  34
  35 Character::Character(const std::string& name) :
  36         tilemap_(name),
  37         animation_(name)
  38 {
  39         current.mass = 1.0;
  40         current.inverseMass = 1.0 / current.mass;
  41
  42         // gravity
  43         current.force = Mf::Vector2(0.0, -120.0);
  44
  45         // starting position
  46         current.position = Mf::Vector2(64.0, 64.0);
  47         current.momentum = Mf::Vector2(0.0, 0.0);
  48         current.recalculate();
  49
  50         previous = current;
  51 }
  52
  53
  54 void Character::update(Mf::Scalar t, Mf::Scalar dt)
  55 {
  56         previous = current;
  57
  58         Mf::Vector2 x = current.position - Mf::Vector2(500.0, 200.0);
  59         Mf::Scalar mag = x.length();
  60         Mf::Scalar d = 50.0;
  61
  62         // gravity:
  63         current.force = Mf::Vector2(0.0, -2000.0);
  64         // spring:
  65         //current.force += -15.0 * x - 1.5 * current.velocity;
  66         current.force += -20.0 * (mag - d) * (x / mag) - 2.0 * current.velocity;
  67         // internal:
  68         current.force += userForce;
  69         current.recalculate();
  70         //std::cout << "force: " << current.momentum << std::endl;
  71
  72         Mf::euler<State,Derivative>(current, t, dt);
  73
  74         animation_.update(t, dt);
  75 }
  76
  77
  78 void Character::draw(Mf::Scalar alpha) const
  79 {
  80         State state = cml::lerp(previous, current, alpha);
  81
  82         //glColor3f(1.0f, 1.0f, 1.0f);
  83         tilemap_.bind();
  84
  85         Mf::Tilemap::Index frame = animation_.getFrame();
  86
  87         Mf::Tilemap::Orientation orientation = Mf::Tilemap::NORMAL;
  88
  89         if (current.velocity[0] < 0.0) orientation = Mf::Tilemap::REVERSE;
  90
  91         Mf::Scalar coords[8];
  92         tilemap_.getTileCoords(frame, coords, orientation);
  93
  94         Mf::Scalar s = 16.0;
  95
  96         glBegin(GL_TRIANGLE_FAN);
  97                 glTexCoord2f(coords[0], coords[1]);
  98                 glVertex3(state.position[0]-s, state.position[1]-s, z);
  99                 glTexCoord2f(coords[2], coords[3]);
 100                 glVertex3(state.position[0]+s, state.position[1]-s, z);
 101                 glTexCoord2f(coords[4], coords[5]);
 102                 glVertex3(state.position[0]+s, state.position[1]+s, z);
 103                 glTexCoord2f(coords[6], coords[7]);
 104                 glVertex3(state.position[0]-s, state.position[1]+s, z);
 105         glEnd();
 106
 107         //glColor3f(0.0f, 0.0f, 0.0f);
 108         Mf::Texture::resetBind();
 109
 110         glBegin(GL_TRIANGLES);
 111                 glVertex3(480.0, 190.0, 64.0);
 112                 glVertex3(520.0, 190.0, 64.0);
 113                 glVertex3(500.0, 210.0, 64.0);
 114         glEnd();
 115
 116         //glColor3f(1.0f, 1.0f, 1.0f);
 117 }
 118
 119
 120 Mf::Tilemap& Character::getTilemap()
 121 {
 122         return tilemap_;
 123 }
 124
 125 Mf::Animation& Character::getAnimation()
 126 {
 127         return animation_;
 128 }
 129
 130
 131 /** vim: set ts=4 sw=4 tw=80: *************************************************/
 132