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         updateContainers();
  53 }
  54
  55
  56 void Character::update(Mf::Scalar t, Mf::Scalar dt)
  57 {
  58         previous = current;
  59
  60         Mf::Scalar epsilon = 100.0;
  61
  62         //current.momentum = Mf::Vector2(0.0, -120.0);
  63         current.momentum = -5 * (current.position - Mf::Vector2(500.0, 200.0))
  64                 - 2.0 * current.velocity;
  65         current.recalculate();
  66         std::cout << "force: " << current.momentum << std::endl;
  67
  68         //if (std::abs(current.force[0]) < epsilon && std::abs(current.force[1]) < epsilon &&
  69                 //std::abs(current.velocity[0]) < epsilon && std::abs(current.velocity[1]) < epsilon)
  70         //{
  71                 //current.force = Mf::Vector2(0.0, 0.0);
  72                 //current.velocity = Mf::Vector2(0.0, 0.0);
  73                 //current.momentum = Mf::Vector2(0.0, 0.0);
  74         //}
  75
  76         Mf::integrate<State,Derivative>(current, t, dt);
  77
  78         animation_.update(t, dt);
  79
  80         updateContainers();
  81 }
  82
  83 void Character::updateContainers()
  84 {
  85         aabb_.init(Mf::Vector3(current.position[0]-16.0, current.position[1]-16.0, z),
  86                         Mf::Vector3(current.position[0]+16.0, current.position[1]+16.0, z));
  87         sphere_.point = Mf::Vector3(current.position[0], current.position[1], z);
  88         sphere_.radius = (aabb_.min - sphere_.point).length();
  89 }
  90
  91 void Character::handleEvent(const Mf::Event& event)
  92 {
  93         // really just for heroine...
  94
  95         Mf::Scalar force = 500.0;
  96
  97         Mf::Vector2 left = Mf::Vector2(-force, 0.0);
  98         Mf::Vector2 right = Mf::Vector2(force, 0.0);
  99         Mf::Vector2 down = Mf::Vector2(0.0, -force);
 100         Mf::Vector2 up = Mf::Vector2(0.0, force);
 101
 102         switch (event.type)
 103         {
 104                 case SDL_KEYDOWN:
 105                         if (event.key.keysym.sym == SDLK_a)
 106                         {
 107                                 current.force += left;
 108                         }
 109                         else if (event.key.keysym.sym == SDLK_d)
 110                         {
 111                                 current.force += right;
 112                         }
 113                         else if (event.key.keysym.sym == SDLK_s)
 114                         {
 115                                 current.force += down;
 116                         }
 117                         else if (event.key.keysym.sym == SDLK_w)
 118                         {
 119                                 current.force += up;
 120                         }
 121                         break;
 122
 123                 case SDL_KEYUP:
 124                         if (event.key.keysym.sym == SDLK_a)
 125                         {
 126                                 current.force -= left;
 127                         }
 128                         else if (event.key.keysym.sym == SDLK_d)
 129                         {
 130                                 current.force -= right;
 131                         }
 132                         else if (event.key.keysym.sym == SDLK_s)
 133                         {
 134                                 current.force -= down;
 135                         }
 136                         else if (event.key.keysym.sym == SDLK_w)
 137                         {
 138                                 current.force -= up;
 139                         }
 140                         break;
 141         }
 142
 143         //Mf::logInfo("current force [%f %f]", current.force[0], current.force[1]);
 144         //std::cerr << "current force: " << current.force << std::endl;
 145 }
 146
 147
 148 void Character::draw(Mf::Scalar alpha) const
 149 {
 150         State state = cml::lerp(previous, current, alpha);
 151
 152         glColor3f(1.0f, 1.0f, 1.0f);
 153         tilemap_.bind();
 154
 155         Mf::Tilemap::Index frame = animation_.getFrame();
 156
 157         Mf::Scalar coords[8];
 158         tilemap_.getTileCoords(frame, coords);
 159
 160         Mf::Scalar s = 16.0;
 161
 162         glBegin(GL_TRIANGLE_FAN);
 163                 glTexCoord2f(coords[0], coords[1]);
 164                 glVertex3(state.position[0]-s, state.position[1]-s, z);
 165                 glTexCoord2f(coords[2], coords[3]);
 166                 glVertex3(state.position[0]+s, state.position[1]-s, z);
 167                 glTexCoord2f(coords[4], coords[5]);
 168                 glVertex3(state.position[0]+s, state.position[1]+s, z);
 169                 glTexCoord2f(coords[6], coords[7]);
 170                 glVertex3(state.position[0]-s, state.position[1]+s, z);
 171         glEnd();
 172 }
 173
 174
 175 Mf::Tilemap& Character::getTilemap()
 176 {
 177         return tilemap_;
 178 }
 179
 180 Mf::Animation& Character::getAnimation()
 181 {
 182         return animation_;
 183 }
 184
 185
 186 /** vim: set ts=4 sw=4 tw=80: *************************************************/
 187