Hi This my first little game in Pokitto. Im a fresh in C++ So, Wishing your advise!!!!!
Dependencies: PokittoLib
bullet.h@0:eff664bec7e0, 2018-03-17 (annotated)
- Committer:
- 79859899
- Date:
- Sat Mar 17 14:28:40 2018 +0000
- Revision:
- 0:eff664bec7e0
- Child:
- 1:8d5b6cdae9df
Hi This my first little game in Pokitto. ; Im a fresh.; So, Wishing your advise.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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79859899 | 0:eff664bec7e0 | 1 | /**************************************************************************/ |
79859899 | 0:eff664bec7e0 | 2 | /*! |
79859899 | 0:eff664bec7e0 | 3 | @file Bullet.h |
79859899 | 0:eff664bec7e0 | 4 | @author |
79859899 | 0:eff664bec7e0 | 5 | |
79859899 | 0:eff664bec7e0 | 6 | @section |
79859899 | 0:eff664bec7e0 | 7 | |
79859899 | 0:eff664bec7e0 | 8 | */ |
79859899 | 0:eff664bec7e0 | 9 | /**************************************************************************/ |
79859899 | 0:eff664bec7e0 | 10 | #ifndef BULLET_H |
79859899 | 0:eff664bec7e0 | 11 | #define BULLET_H |
79859899 | 0:eff664bec7e0 | 12 | #include "Pokitto.h" |
79859899 | 0:eff664bec7e0 | 13 | |
79859899 | 0:eff664bec7e0 | 14 | |
79859899 | 0:eff664bec7e0 | 15 | const uint8_t bullet_bmp[] = |
79859899 | 0:eff664bec7e0 | 16 | { |
79859899 | 0:eff664bec7e0 | 17 | 4,4, |
79859899 | 0:eff664bec7e0 | 18 | 186,171, |
79859899 | 0:eff664bec7e0 | 19 | 169,154, |
79859899 | 0:eff664bec7e0 | 20 | 169,154, |
79859899 | 0:eff664bec7e0 | 21 | 186,171, |
79859899 | 0:eff664bec7e0 | 22 | }; |
79859899 | 0:eff664bec7e0 | 23 | |
79859899 | 0:eff664bec7e0 | 24 | class bullet { |
79859899 | 0:eff664bec7e0 | 25 | public: |
79859899 | 0:eff664bec7e0 | 26 | bullet(); |
79859899 | 0:eff664bec7e0 | 27 | bullet(int16_t aircraftXaxis, int16_t aircraftYaxis){ |
79859899 | 0:eff664bec7e0 | 28 | axisIncri = 0; |
79859899 | 0:eff664bec7e0 | 29 | randAxis(xaxis, yaxis); |
79859899 | 0:eff664bec7e0 | 30 | oldxaxis = xaxis; |
79859899 | 0:eff664bec7e0 | 31 | oldyaxis = yaxis; |
79859899 | 0:eff664bec7e0 | 32 | gradientB = gradientCal(xaxis, yaxis, aircraftXaxis, aircraftYaxis); |
79859899 | 0:eff664bec7e0 | 33 | if(xaxis >= aircraftXaxis){ |
79859899 | 0:eff664bec7e0 | 34 | leftsign = true; |
79859899 | 0:eff664bec7e0 | 35 | }else{ |
79859899 | 0:eff664bec7e0 | 36 | leftsign = false; |
79859899 | 0:eff664bec7e0 | 37 | } |
79859899 | 0:eff664bec7e0 | 38 | |
79859899 | 0:eff664bec7e0 | 39 | } |
79859899 | 0:eff664bec7e0 | 40 | |
79859899 | 0:eff664bec7e0 | 41 | void renew(int16_t aircraftXaxis, int16_t aircraftYaxis){ |
79859899 | 0:eff664bec7e0 | 42 | if(renewsign) { |
79859899 | 0:eff664bec7e0 | 43 | axisIncri = 0; |
79859899 | 0:eff664bec7e0 | 44 | randAxis(xaxis, yaxis); |
79859899 | 0:eff664bec7e0 | 45 | oldxaxis = xaxis; |
79859899 | 0:eff664bec7e0 | 46 | oldyaxis = yaxis; |
79859899 | 0:eff664bec7e0 | 47 | gradientB = gradientCal(xaxis, yaxis, aircraftXaxis, aircraftYaxis); |
79859899 | 0:eff664bec7e0 | 48 | if(xaxis >= aircraftXaxis){ |
79859899 | 0:eff664bec7e0 | 49 | leftsign = true; |
79859899 | 0:eff664bec7e0 | 50 | }else{ |
79859899 | 0:eff664bec7e0 | 51 | leftsign = false; |
79859899 | 0:eff664bec7e0 | 52 | } |
79859899 | 0:eff664bec7e0 | 53 | renewsign = false; |
79859899 | 0:eff664bec7e0 | 54 | } |
79859899 | 0:eff664bec7e0 | 55 | } |
79859899 | 0:eff664bec7e0 | 56 | |
79859899 | 0:eff664bec7e0 | 57 | void move() { |
79859899 | 0:eff664bec7e0 | 58 | if(leftsign){ |
79859899 | 0:eff664bec7e0 | 59 | yaxis = BackAxis(--axisIncri, gradientB) + oldyaxis; |
79859899 | 0:eff664bec7e0 | 60 | xaxis = axisIncri + oldxaxis; |
79859899 | 0:eff664bec7e0 | 61 | }else{ |
79859899 | 0:eff664bec7e0 | 62 | yaxis = BackAxis(++axisIncri, gradientB) + oldyaxis; |
79859899 | 0:eff664bec7e0 | 63 | xaxis = axisIncri + oldxaxis; |
79859899 | 0:eff664bec7e0 | 64 | } |
79859899 | 0:eff664bec7e0 | 65 | if(abs(oldxaxis - xaxis) > 110){ |
79859899 | 0:eff664bec7e0 | 66 | renewsign = true; |
79859899 | 0:eff664bec7e0 | 67 | } |
79859899 | 0:eff664bec7e0 | 68 | |
79859899 | 0:eff664bec7e0 | 69 | } |
79859899 | 0:eff664bec7e0 | 70 | |
79859899 | 0:eff664bec7e0 | 71 | void display(){ |
79859899 | 0:eff664bec7e0 | 72 | Pokitto::Display::drawBitmap(xaxis,yaxis,bullet_bmp); |
79859899 | 0:eff664bec7e0 | 73 | } |
79859899 | 0:eff664bec7e0 | 74 | |
79859899 | 0:eff664bec7e0 | 75 | int16_t getxaxix(){ |
79859899 | 0:eff664bec7e0 | 76 | return xaxis; |
79859899 | 0:eff664bec7e0 | 77 | } |
79859899 | 0:eff664bec7e0 | 78 | |
79859899 | 0:eff664bec7e0 | 79 | int16_t getyaxix(){ |
79859899 | 0:eff664bec7e0 | 80 | return yaxis; |
79859899 | 0:eff664bec7e0 | 81 | } |
79859899 | 0:eff664bec7e0 | 82 | |
79859899 | 0:eff664bec7e0 | 83 | private: |
79859899 | 0:eff664bec7e0 | 84 | int16_t xaxis, yaxis, oldxaxis, oldyaxis, axisInc, axisIncri; |
79859899 | 0:eff664bec7e0 | 85 | bool leftsign, renewsign; |
79859899 | 0:eff664bec7e0 | 86 | float gradientB; |
79859899 | 0:eff664bec7e0 | 87 | void randAxis(int16_t&, int16_t&); // giving bullet a random axis outside screen. |
79859899 | 0:eff664bec7e0 | 88 | float gradientCal(int16_t, int16_t, int16_t, int16_t); // calculates gradient between bullet and aircraft. |
79859899 | 0:eff664bec7e0 | 89 | int16_t BackAxis(int16_t, float); // calculates a axis in axiscenter by gradient. |
79859899 | 0:eff664bec7e0 | 90 | }; |
79859899 | 0:eff664bec7e0 | 91 | |
79859899 | 0:eff664bec7e0 | 92 | void bullet::randAxis(int16_t &xaxis, int16_t &yaxis){ |
79859899 | 0:eff664bec7e0 | 93 | xaxis = rand()%126 - 8; |
79859899 | 0:eff664bec7e0 | 94 | if((xaxis<=-4)||(xaxis>=113)){ |
79859899 | 0:eff664bec7e0 | 95 | yaxis = rand()%96 -4; |
79859899 | 0:eff664bec7e0 | 96 | }else{ |
79859899 | 0:eff664bec7e0 | 97 | if(rand()%2){ |
79859899 | 0:eff664bec7e0 | 98 | yaxis = -4; |
79859899 | 0:eff664bec7e0 | 99 | }else{ |
79859899 | 0:eff664bec7e0 | 100 | yaxis = 91; |
79859899 | 0:eff664bec7e0 | 101 | } |
79859899 | 0:eff664bec7e0 | 102 | } |
79859899 | 0:eff664bec7e0 | 103 | } |
79859899 | 0:eff664bec7e0 | 104 | float bullet::gradientCal(int16_t x1, int16_t y1, int16_t x2, int16_t y2){ |
79859899 | 0:eff664bec7e0 | 105 | float i = (static_cast<float>(x1 - x2)) / (y1 - y2); |
79859899 | 0:eff664bec7e0 | 106 | // In order to avoid the fastest bullet appearing, because sometime the gradient can be a tiny number. |
79859899 | 0:eff664bec7e0 | 107 | if(i <= 0.3 && i >= 0){ |
79859899 | 0:eff664bec7e0 | 108 | return 0.5; |
79859899 | 0:eff664bec7e0 | 109 | }else if (i >= -0.3 && i < 0){ |
79859899 | 0:eff664bec7e0 | 110 | return -0.5; |
79859899 | 0:eff664bec7e0 | 111 | }else{ |
79859899 | 0:eff664bec7e0 | 112 | return (static_cast<float>(x1 - x2)) / (y1 - y2); |
79859899 | 0:eff664bec7e0 | 113 | } |
79859899 | 0:eff664bec7e0 | 114 | } |
79859899 | 0:eff664bec7e0 | 115 | |
79859899 | 0:eff664bec7e0 | 116 | int16_t bullet::BackAxis(int16_t axis, float gradient){ |
79859899 | 0:eff664bec7e0 | 117 | return axis / gradient; |
79859899 | 0:eff664bec7e0 | 118 | } |
79859899 | 0:eff664bec7e0 | 119 | #endif |