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1 #include "opengl.h"
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2 #include "ship.h"
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3
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4 Ship::Ship()
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5 {
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6 friction = 0.2;
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7 }
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8
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9 void Ship::accelerate(double a)
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10 {
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11 velocity += get_direction() * a;
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12 }
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13
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14 void Ship::accelerate_side(double a)
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15 {
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16 velocity += get_right() * a;
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17 }
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18
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19 void Ship::turn(double yaw, double pitch)
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20 {
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21 Quaternion qyaw(Vector3(0, 1, 0), yaw);
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22 Quaternion qpitch(Vector3(1, 0, 0), pitch);
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23
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24 rot *= qpitch;
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25 rot *= qyaw;
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26 }
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27
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28 void Ship::update(time_sec_t dt)
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29 {
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30 pos += velocity * dt;
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31 velocity -= velocity * friction * dt;
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32 }
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33
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34 const Vector3 &Ship::get_position() const
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35 {
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36 return pos;
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37 }
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38
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39 Vector3 Ship::get_direction() const
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40 {
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41 static const Vector3 dir{0, 0, -1};
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42 return dir.transformed(rot);
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43 }
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44
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45 Vector3 Ship::get_right() const
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46 {
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47 static const Vector3 dir{1, 0, 0};
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48 return dir.transformed(rot);
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49 }
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50
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51 Matrix4x4 Ship::get_matrix() const
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52 {
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53 Matrix3x3 rmat = rot.get_rotation_matrix().transposed();
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54 Matrix4x4 tmat;
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55 tmat.set_translation(pos);
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56
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57 return tmat * Matrix4x4(rmat);
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58 }
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59
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60 void Ship::dbg_draw() const
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61 {
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62 glPushAttrib(GL_POINT_BIT | GL_ENABLE_BIT);
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63
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64 glPointSize(3.0);
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65 glDisable(GL_LIGHTING);
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66
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67 glBegin(GL_LINES);
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68 glColor3f(0, 0, 1);
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69 glVertex3f(pos.x, pos.y, pos.z);
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70
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71 Vector3 end = pos + get_direction();
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72 glVertex3f(end.x, end.y, end.z);
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73 glEnd();
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74
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75 glBegin(GL_POINTS);
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76 glColor3f(1, 0, 0);
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77 glVertex3f(pos.x, pos.y, pos.z);
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78 glEnd();
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79
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80 glMatrixMode(GL_MODELVIEW);
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81 glPushMatrix();
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82 mult_gl_matrix(get_matrix());
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83
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84 glScalef(1, 1, -1);
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85 glColor3f(1, 1, 0);
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86 glutWireCone(0.1, 0.6, 12, 2);
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87
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88 glPopMatrix();
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89
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90 glPopAttrib();
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91 }
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