1 | /* |
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2 | orxonox - the future of 3D-vertical-scrollers |
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3 | |
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4 | Copyright (C) 2004 orx |
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5 | |
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6 | This program is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | ### File Specific: |
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12 | main-programmer: Benjamin Grauer |
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13 | co-programmer: ... |
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14 | */ |
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15 | |
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16 | //#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_ |
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17 | |
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18 | #include "crosshair.h" |
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19 | #include "event_handler.h" |
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20 | |
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21 | #include "graphics_engine.h" |
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22 | #include "glincl.h" |
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23 | #include "p_node.h" |
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24 | #include "state.h" |
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25 | |
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26 | using namespace std; |
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27 | |
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28 | |
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29 | /** |
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30 | \brief standard constructor |
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31 | */ |
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32 | Crosshair::Crosshair () |
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33 | { |
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34 | this->setClassID(CL_CROSSHAIR, "Crosshair"); |
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35 | this->setName("Crosshair"); |
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36 | |
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37 | EventHandler::getInstance()->subscribe(this, ES_GAME, EV_MOUSE_MOTION); |
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38 | |
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39 | } |
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40 | |
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41 | |
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42 | /** |
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43 | \brief standard deconstructor |
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44 | */ |
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45 | Crosshair::~Crosshair () |
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46 | { |
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47 | // delete what has to be deleted here |
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48 | } |
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49 | |
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50 | void Crosshair::process(const Event &event) |
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51 | { |
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52 | if (event.type == EV_MOUSE_MOTION) |
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53 | { |
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54 | this->position2D[0] = event.x; |
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55 | this->position2D[1] = event.y; |
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56 | } |
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57 | |
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58 | } |
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59 | |
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60 | |
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61 | void Crosshair::draw() const |
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62 | { |
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63 | const PNode* camera = State::getInstance()->getCamera(); //!< \todo MUST be different |
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64 | Vector cameraPos = camera->getAbsCoor(); |
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65 | Vector cameraTargetPos = State::getInstance()->getCameraTarget()->getAbsCoor(); |
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66 | Vector view = cameraTargetPos - cameraPos; |
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67 | Vector up = Vector(0, 1, 0); |
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68 | up = camera->getAbsDir().apply(up); |
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69 | Vector h = up.cross(view); |
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70 | Vector v = h.cross(view); |
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71 | h.normalize(); |
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72 | v.normalize(); |
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73 | |
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74 | float px = (position2D[0]-GraphicsEngine::getInstance()->getResolutionX()/2)*.05; |
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75 | float py = -(position2D[1]-GraphicsEngine::getInstance()->getResolutionY()/2)*.05; |
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76 | |
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77 | |
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78 | |
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79 | glBegin(GL_TRIANGLES); |
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80 | glVertex3f(cameraTargetPos.x - h.x*px - v.x*py, |
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81 | cameraTargetPos.y - h.y*px - v.y*py, |
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82 | cameraTargetPos.z - h.z*px - v.z*py); |
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83 | |
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84 | glVertex3f(cameraTargetPos.x - h.x*(px+1) - v.x*py, |
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85 | cameraTargetPos.y - h.y*(px+1) - v.y*py, |
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86 | cameraTargetPos.z - h.z*(px+1) - v.z*py); |
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87 | |
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88 | glVertex3f(cameraTargetPos.x - h.x*px - v.x*(py+1), |
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89 | cameraTargetPos.y - h.y*px - v.y*(py+1), |
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90 | cameraTargetPos.z - h.z*px - v.z*(py+1)); |
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91 | |
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92 | glEnd(); |
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93 | |
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94 | } |
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