Louis Wray / Mbed 2 deprecated L2_2645_project

A project that creates falling asteroids at random positions along the top of the screen for a space ship at the bottom to shoot, using a Nokia N5110 LCD, joystick and pushbuttons

Dependencies:   DebounceIn N5110 PowerControl mbed

main.cpp@4:51f8b719f671, 2015-05-11 (annotated)

Committer:
wray2303
Date:
Mon May 11 14:40:23 2015 +0000
Revision:
4:51f8b719f671
Parent:
3:39c95d65bee5 
final program bugs fixed

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wray2303 0:6eba0e66ce01 1 /**
wray2303 0:6eba0e66ce01 2 @file main.cpp
wray2303 0:6eba0e66ce01 3
wray2303 0:6eba0e66ce01 4 @brief Program implementation
wray2303 0:6eba0e66ce01 5
wray2303 0:6eba0e66ce01 6 @author Louis Wray
wray2303 0:6eba0e66ce01 7
wray2303 0:6eba0e66ce01 8 @date 14th April 2015
wray2303 0:6eba0e66ce01 9 */
wray2303 0:6eba0e66ce01 10
wray2303 0:6eba0e66ce01 11 #include "main.h"
wray2303 0:6eba0e66ce01 12
wray2303 0:6eba0e66ce01 13 /// timer to regularly read the joystick
wray2303 0:6eba0e66ce01 14 Ticker pollJoystick;
wray2303 0:6eba0e66ce01 15 /// timer to regularly call the read bullet function
wray2303 0:6eba0e66ce01 16 Ticker readShoot;
wray2303 0:6eba0e66ce01 17 /// timer to regularly call new asteroids
wray2303 0:6eba0e66ce01 18 Ticker readTheAsteroid;
wray2303 3:39c95d65bee5 19 /// timer to create the asteroids
wray2303 0:6eba0e66ce01 20 Timer shootSoundtimer;
wray2303 3:39c95d65bee5 21 ///timeout used to stop button skip
wray2303 3:39c95d65bee5 22 Timeout EndGame;
wray2303 0:6eba0e66ce01 23
wray2303 0:6eba0e66ce01 24 /**
wray2303 0:6eba0e66ce01 25 create enumerated type (0,1,2,3 etc. for direction)
wray2303 0:6eba0e66ce01 26 */
wray2303 0:6eba0e66ce01 27 enum DirectionName {
wray2303 0:6eba0e66ce01 28 UP,
wray2303 0:6eba0e66ce01 29 DOWN,
wray2303 0:6eba0e66ce01 30 LEFT,
wray2303 0:6eba0e66ce01 31 RIGHT,
wray2303 0:6eba0e66ce01 32 CENTRE,
wray2303 0:6eba0e66ce01 33 UNKNOWN
wray2303 0:6eba0e66ce01 34 };
wray2303 0:6eba0e66ce01 35
wray2303 0:6eba0e66ce01 36 /**
wray2303 0:6eba0e66ce01 37 struct for Joystick
wray2303 0:6eba0e66ce01 38 */
wray2303 0:6eba0e66ce01 39 typedef struct JoyStick Joystick;
wray2303 0:6eba0e66ce01 40 struct JoyStick {
wray2303 0:6eba0e66ce01 41 float x; /// current x value
wray2303 0:6eba0e66ce01 42 float x0; /// 'centred' x value
wray2303 0:6eba0e66ce01 43 float y; /// current y value
wray2303 0:6eba0e66ce01 44 float y0; /// 'centred' y value
wray2303 0:6eba0e66ce01 45 int button; /// button state (assume pull-down used, so 1 = pressed, 0 = unpressed)
wray2303 0:6eba0e66ce01 46 DirectionName direction; /// current direction
wray2303 0:6eba0e66ce01 47 };
wray2303 0:6eba0e66ce01 48 /// create struct variable
wray2303 0:6eba0e66ce01 49 Joystick joystick;
wray2303 0:6eba0e66ce01 50
wray2303 0:6eba0e66ce01 51 int printFlag =0; /**< flag for calling joystick value printing */
wray2303 0:6eba0e66ce01 52 int state = 0; /**< integer value for what state the game is in.
wray2303 0:6eba0e66ce01 53 for use of the switch statement */
wray2303 0:6eba0e66ce01 54 int GenAsteroidFlag = 0; /// asteroid generation flag
wray2303 0:6eba0e66ce01 55 int AsteroidCreatedFlag = 0; /// flag to note asteroid is created
wray2303 0:6eba0e66ce01 56 int BulletExistsFlag = 0; /// flag to note bullet has been fired and is on screen
wray2303 2:8d28a2f491eb 57 int PauseNumber = 0; /// pause flag
wray2303 2:8d28a2f491eb 58 int HighScore = 0; /// integer set for highscore
wray2303 0:6eba0e66ce01 59
wray2303 0:6eba0e66ce01 60 int main()
wray2303 0:6eba0e66ce01 61 {
wray2303 0:6eba0e66ce01 62 asteroid.nscore = 0;
wray2303 0:6eba0e66ce01 63 srand(15000*randomPin); /// seeding random function
wray2303 0:6eba0e66ce01 64 calibrateJoystick(); /// set's centred values of joystick
wray2303 3:39c95d65bee5 65 pollJoystick.attach(&updateJoystick,1/50.0); /// read joystick 50 times per second
wray2303 0:6eba0e66ce01 66 ship.SetValues(42,39); /// initialise ships starting x,y coordinates
wray2303 0:6eba0e66ce01 67
wray2303 0:6eba0e66ce01 68 PHY_PowerDown(); /// power down ethernet connection
wray2303 0:6eba0e66ce01 69
wray2303 0:6eba0e66ce01 70 while(1) {
wray2303 0:6eba0e66ce01 71
wray2303 0:6eba0e66ce01 72 switch(state) { /// switch statement this enables the game to switch between states giving a start state
wray2303 0:6eba0e66ce01 73 /// a game play state and subsequently a game over state giving choice to start again.
wray2303 0:6eba0e66ce01 74
wray2303 0:6eba0e66ce01 75 case 0:
wray2303 0:6eba0e66ce01 76 startUpDisplay(); /// call start up display function
wray2303 0:6eba0e66ce01 77 state=1;
wray2303 0:6eba0e66ce01 78 break;
wray2303 0:6eba0e66ce01 79
wray2303 0:6eba0e66ce01 80 case 1:
wray2303 0:6eba0e66ce01 81 Game(); /// game play
wray2303 0:6eba0e66ce01 82 break;
wray2303 0:6eba0e66ce01 83
wray2303 0:6eba0e66ce01 84 case 2:
wray2303 2:8d28a2f491eb 85 lcd.clear(); /// clears display
wray2303 2:8d28a2f491eb 86 PauseDisplay(); /// applies pause screen
wray2303 0:6eba0e66ce01 87 break;
wray2303 0:6eba0e66ce01 88
wray2303 0:6eba0e66ce01 89 case 3:
wray2303 0:6eba0e66ce01 90 EndDisplay(); /// end of game display
wray2303 0:6eba0e66ce01 91 break;
wray2303 0:6eba0e66ce01 92 }
wray2303 0:6eba0e66ce01 93
wray2303 0:6eba0e66ce01 94 Sleep(); /// sleep function when nothings happening mbed can sleep and save power consumption
wray2303 0:6eba0e66ce01 95 }
wray2303 0:6eba0e66ce01 96 }
wray2303 0:6eba0e66ce01 97
wray2303 2:8d28a2f491eb 98
wray2303 2:8d28a2f491eb 99 void Read()
wray2303 2:8d28a2f491eb 100 {
wray2303 2:8d28a2f491eb 101 FILE *fp = fopen("/local/HSCORES.txt","r"); /// open file or create then open if not already made. and read value
wray2303 2:8d28a2f491eb 102 fscanf(fp, "%i", &HighScore); /// look in the local file system
wray2303 2:8d28a2f491eb 103 fclose(fp); /// close file
wray2303 2:8d28a2f491eb 104 }
wray2303 2:8d28a2f491eb 105
wray2303 2:8d28a2f491eb 106 void Write()
wray2303 2:8d28a2f491eb 107 {
wray2303 2:8d28a2f491eb 108 FILE *fp = fopen("/local/HSCORES.txt","w"); /// open file or create then open if not already made. make ready for writing to the file
wray2303 2:8d28a2f491eb 109 fprintf(fp, "%i\r\n", HighScore); /// print value to the local file
wray2303 2:8d28a2f491eb 110 fclose(fp); /// close file
wray2303 2:8d28a2f491eb 111 }
wray2303 2:8d28a2f491eb 112
wray2303 2:8d28a2f491eb 113
wray2303 0:6eba0e66ce01 114 void startUpDisplay()
wray2303 0:6eba0e66ce01 115 {
wray2303 0:6eba0e66ce01 116 lcd.init(); /// initialise the display
wray2303 0:6eba0e66ce01 117 lcd.clear();
wray2303 0:6eba0e66ce01 118 lcd.printString("Space-Teroid",6,1); /// opening message
wray2303 0:6eba0e66ce01 119 lcd.printString("Press S5 to",12,3);
wray2303 0:6eba0e66ce01 120 lcd.printString("Play",30,4);
wray2303 0:6eba0e66ce01 121 lcd.drawLine(0,0,0,47,1); /// draw outline
wray2303 0:6eba0e66ce01 122 lcd.drawLine(83,0,83,47,1);
wray2303 0:6eba0e66ce01 123 lcd.drawLine(0,0,83,0,1);
wray2303 0:6eba0e66ce01 124 lcd.drawLine(0,47,83,47,1);
wray2303 0:6eba0e66ce01 125 lcd.refresh(); /// refesh LCD to create this display
wray2303 0:6eba0e66ce01 126
wray2303 0:6eba0e66ce01 127 while(!buttonP) { /// while the pause flag or pause button has not been set or used , the mbed will sleep saving power and allowing
wray2303 0:6eba0e66ce01 128 /// the user to start when they are ready
wray2303 0:6eba0e66ce01 129 sleep();
wray2303 0:6eba0e66ce01 130 }
wray2303 0:6eba0e66ce01 131 GenAsteroidFlag = 1;
wray2303 0:6eba0e66ce01 132 lcd.clear(); /// when flag has been set while loop has been broken and start up display will be escaped
wray2303 0:6eba0e66ce01 133 ship.shape(); /// the ships shape is drawn and and the game can begin
wray2303 0:6eba0e66ce01 134 }
wray2303 0:6eba0e66ce01 135
wray2303 2:8d28a2f491eb 136
wray2303 0:6eba0e66ce01 137 void Game()
wray2303 0:6eba0e66ce01 138 {
wray2303 0:6eba0e66ce01 139 lcd.drawLine(0,0,0,47,1); /// draw outline repeatedly when asteroid is falling
wray2303 0:6eba0e66ce01 140 lcd.drawLine(83,0,83,47,1);
wray2303 0:6eba0e66ce01 141 lcd.drawLine(0,0,83,0,1);
wray2303 0:6eba0e66ce01 142 lcd.drawLine(0,47,83,47,1);
wray2303 2:8d28a2f491eb 143
wray2303 0:6eba0e66ce01 144 if (printFlag) { /// if print flag set, clear flag and use joysticks horizontal position
wray2303 0:6eba0e66ce01 145 printFlag = 0;
wray2303 0:6eba0e66ce01 146
wray2303 0:6eba0e66ce01 147 if (joystick.direction == LEFT && ship.xs>=7) { /// 7 represents the left most boundary
wray2303 0:6eba0e66ce01 148 ship.ShipLeft(); /// if joystick moves left, call ship moving left function
wray2303 0:6eba0e66ce01 149 }
wray2303 0:6eba0e66ce01 150 if (joystick.direction == RIGHT && ship.xs<=76) { /// 76 represents the right most boundary
wray2303 0:6eba0e66ce01 151 ship.ShipRight(); /// if joystick moves right, call the ship moving right function
wray2303 0:6eba0e66ce01 152 } else {} /// else do nothing
wray2303 0:6eba0e66ce01 153 }
wray2303 0:6eba0e66ce01 154
wray2303 0:6eba0e66ce01 155 if(button) {
wray2303 0:6eba0e66ce01 156 AsteroidCreatedFlag = 0;
wray2303 0:6eba0e66ce01 157 GenAsteroidFlag = 0;
wray2303 0:6eba0e66ce01 158 asteroid.destroyAsteroid();
wray2303 0:6eba0e66ce01 159 readTheAsteroid.detach();
wray2303 0:6eba0e66ce01 160 PWM1 = 0;
wray2303 0:6eba0e66ce01 161 state = 2;
wray2303 0:6eba0e66ce01 162
wray2303 0:6eba0e66ce01 163 } else {}
wray2303 0:6eba0e66ce01 164
wray2303 0:6eba0e66ce01 165 if(BulletExistsFlag==0) { /// check if there is already a bullet on the screen, a rule of the game one bullet at a time!
wray2303 0:6eba0e66ce01 166 if(buttonS) { /// if shoot button is pressed
wray2303 0:6eba0e66ce01 167
wray2303 0:6eba0e66ce01 168 shootSoundtimer.start(); /// start timer for shooting sound
wray2303 0:6eba0e66ce01 169 PWM1.period(2e-3); /// set the period of the PWM
wray2303 0:6eba0e66ce01 170 PWM1 = 0.5; /// set the duty cycle
wray2303 0:6eba0e66ce01 171 BulletExistsFlag=1; /// bullet exists flag set
wray2303 0:6eba0e66ce01 172 bullet.SetValues(ship.xs,ship.ys-1); /// set the bullets values according to where the ship is
wray2303 0:6eba0e66ce01 173
wray2303 0:6eba0e66ce01 174 bullet.collision(); /// chec for bullet collision
wray2303 0:6eba0e66ce01 175 if(bullet.collision()==true) {
wray2303 0:6eba0e66ce01 176 readShoot.detach();
wray2303 0:6eba0e66ce01 177 bullet.clearBullet();
wray2303 0:6eba0e66ce01 178 BulletExistsFlag=0;
wray2303 0:6eba0e66ce01 179 /** if bullet colision happens during sound being made then
wray2303 2:8d28a2f491eb 180 *buzzer doesnt stop, thisis because of the interrupt the button makes
wray2303 2:8d28a2f491eb 181 *here we reset the buzzer manually */
wray2303 0:6eba0e66ce01 182 shootSoundtimer.stop(); /// stop the timer
wray2303 0:6eba0e66ce01 183 shootSoundtimer.reset(); /// reset the timer
wray2303 0:6eba0e66ce01 184 PWM1 = 0.0; /// turn of the PWM
wray2303 0:6eba0e66ce01 185 }
wray2303 0:6eba0e66ce01 186
wray2303 0:6eba0e66ce01 187 else if(bullet.collision()==false) { /// if bullet co-ordinates are not off the screen
wray2303 0:6eba0e66ce01 188 bullet.createBullet(); /// create the bullet
wray2303 2:8d28a2f491eb 189 readShoot.attach(&ReadBullet,0.045); /// set ticker to read the position of the bullet
wray2303 0:6eba0e66ce01 190 } else {}
wray2303 0:6eba0e66ce01 191
wray2303 0:6eba0e66ce01 192 if(AsteroidCreatedFlag==1) { /// check if an asteroid has been created
wray2303 2:8d28a2f491eb 193 readTheAsteroid.attach(&ReadAsteroid,0.045); /// set ticker for asteroid movement
wray2303 0:6eba0e66ce01 194 } else {}
wray2303 0:6eba0e66ce01 195 } else {}
wray2303 0:6eba0e66ce01 196 }
wray2303 0:6eba0e66ce01 197
wray2303 0:6eba0e66ce01 198 if(GenAsteroidFlag == 1) { /// check if an asteroid is to be generated
wray2303 0:6eba0e66ce01 199 int A = rand() % 75 + 6; /// returns random value between 6 and 7
wray2303 0:6eba0e66ce01 200 asteroid.SetAsteroidValue(A,0); /// set asteroid position according to randomly generated value
wray2303 0:6eba0e66ce01 201 asteroid.createAsteroid(); /// create asteroid
wray2303 0:6eba0e66ce01 202 AsteroidCreatedFlag = 1; /// set flag to state an asteroid has been created and is on screen
wray2303 0:6eba0e66ce01 203 GenAsteroidFlag=0; /// reset Generate asteroid flag so no more asteroid are created
wray2303 0:6eba0e66ce01 204 if(AsteroidCreatedFlag==1) { /// if asteroid has been created
wray2303 2:8d28a2f491eb 205 readTheAsteroid.attach(&ReadAsteroid,0.045); /// set ticker to read and move asteroid
wray2303 0:6eba0e66ce01 206 } else {}
wray2303 2:8d28a2f491eb 207 } else {}
wray2303 2:8d28a2f491eb 208 }
wray2303 0:6eba0e66ce01 209
wray2303 0:6eba0e66ce01 210
wray2303 0:6eba0e66ce01 211 void ReadAsteroid()
wray2303 0:6eba0e66ce01 212 {
wray2303 0:6eba0e66ce01 213 bullet.collision(); /// check if the bullet has made a collision this must mean an asteroid has been shot
wray2303 0:6eba0e66ce01 214 if(bullet.collision()==false) { /// if no collision and the asteroid y position is less than the end of the screen move the asteroid
wray2303 0:6eba0e66ce01 215 asteroid.ya=asteroid.ya+1; /// move asteroids y position down the screen
wray2303 0:6eba0e66ce01 216 asteroid.erasePrevAsteroid(); /// erase the previous asteroid
wray2303 0:6eba0e66ce01 217 asteroid.createAsteroid(); /// create the asteroid in its new position
wray2303 0:6eba0e66ce01 218 } else {}
wray2303 0:6eba0e66ce01 219
wray2303 0:6eba0e66ce01 220 ////////// using a double check seems to make the game run smoother //////////////
wray2303 0:6eba0e66ce01 221 bullet.collision(); /// check if the bullet has made a collision this must mean an asteroid has been shot
wray2303 0:6eba0e66ce01 222 if(bullet.collision()==true) { /// if a collision is made
wray2303 0:6eba0e66ce01 223 BulletExistsFlag=0; /// reset the bullet exists flag
wray2303 0:6eba0e66ce01 224 readShoot.detach();
wray2303 0:6eba0e66ce01 225 readTheAsteroid.detach(); /// detach the read asteroid function from the ticker
wray2303 0:6eba0e66ce01 226 bullet.clearBullet(); /// clear the bullet from the screen
wray2303 0:6eba0e66ce01 227 AsteroidCreatedFlag=0; /// reset Asteroid created Flag to state there is no longer an asteroid on screen
wray2303 0:6eba0e66ce01 228 GenAsteroidFlag=1; /// set the Generate asteroid flag
wray2303 0:6eba0e66ce01 229 asteroid.destroyAsteroid(); /// destroy on screen asteroid
wray2303 2:8d28a2f491eb 230
wray2303 2:8d28a2f491eb 231 /** if bullet colision happens during sound being made then
wray2303 2:8d28a2f491eb 232 buzzer doesnt stop, thisis because of the interrupt the button makes
wray2303 2:8d28a2f491eb 233 here we reset the buzzer manually*/
wray2303 2:8d28a2f491eb 234 shootSoundtimer.stop(); /// stop the timer
wray2303 2:8d28a2f491eb 235 shootSoundtimer.reset(); /// reset the timer
wray2303 2:8d28a2f491eb 236 PWM1 = 0.0; /// turn of the PWM
wray2303 0:6eba0e66ce01 237 } else {}
wray2303 0:6eba0e66ce01 238
wray2303 0:6eba0e66ce01 239 asteroid.armageddon(); /// check if asteroid has reached the bottom of the screen
wray2303 0:6eba0e66ce01 240 if(asteroid.armageddon() == true) { /// if asteroid has it the bottom of the screen ... RUN!!!
wray2303 0:6eba0e66ce01 241 /// armageddon takes place and the game is over
wray2303 0:6eba0e66ce01 242 bullet.clearBullet(); /// clear the existing bullet
wray2303 0:6eba0e66ce01 243 readTheAsteroid.detach(); /// detach the read asteroid function
wray2303 0:6eba0e66ce01 244 asteroid.destroyAsteroid(); /// destroy asteroid in place
wray2303 3:39c95d65bee5 245 EndGame.attach(&endState,0.3);
wray2303 0:6eba0e66ce01 246 } else {}
wray2303 0:6eba0e66ce01 247
wray2303 2:8d28a2f491eb 248 lcd.drawLine(0,0,83,0,1); /// keep re-drawing top line as this is damaged while asteroid moves accross it
wray2303 0:6eba0e66ce01 249 }
wray2303 0:6eba0e66ce01 250
wray2303 2:8d28a2f491eb 251
wray2303 0:6eba0e66ce01 252 void ReadBullet()
wray2303 0:6eba0e66ce01 253 {
wray2303 2:8d28a2f491eb 254 if(shootSoundtimer.read() > 0.1) { /// check when the sound timer reaches 0.1 sec
wray2303 0:6eba0e66ce01 255 shootSoundtimer.stop(); /// stop the timer
wray2303 0:6eba0e66ce01 256 shootSoundtimer.reset(); /// reset the timer
wray2303 0:6eba0e66ce01 257 PWM1 = 0.0; /// turn of the PWM
wray2303 0:6eba0e66ce01 258 } else {}
wray2303 0:6eba0e66ce01 259
wray2303 0:6eba0e66ce01 260 if(button) {
wray2303 0:6eba0e66ce01 261 AsteroidCreatedFlag = 0;
wray2303 0:6eba0e66ce01 262 GenAsteroidFlag = 0;
wray2303 0:6eba0e66ce01 263 asteroid.destroyAsteroid();
wray2303 0:6eba0e66ce01 264 readTheAsteroid.detach();
wray2303 0:6eba0e66ce01 265 PWM1 = 0;
wray2303 0:6eba0e66ce01 266 state = 2;
wray2303 0:6eba0e66ce01 267
wray2303 0:6eba0e66ce01 268 } else {}
wray2303 0:6eba0e66ce01 269 bullet.collision(); /// check if the bullet has collided with anything
wray2303 0:6eba0e66ce01 270 bullet.offScreen(); /// check if the bullet is off screen
wray2303 0:6eba0e66ce01 271 if (bullet.collision() == true||bullet.offScreen()==true) { /// if a collision is made or the bullet goes off the screen
wray2303 0:6eba0e66ce01 272 BulletExistsFlag=0;
wray2303 0:6eba0e66ce01 273 bullet.clearBullet(); /// clear the bullet
wray2303 0:6eba0e66ce01 274 readShoot.detach(); /// detach the ticker
wray2303 0:6eba0e66ce01 275
wray2303 0:6eba0e66ce01 276 /** if bullet colision happens during sound being made then
wray2303 0:6eba0e66ce01 277 buzzer doesnt stop, thisis because of the interrupt the button makes
wray2303 0:6eba0e66ce01 278 here we reset the buzzer manually*/
wray2303 0:6eba0e66ce01 279 shootSoundtimer.stop(); /// stop the timer
wray2303 0:6eba0e66ce01 280 shootSoundtimer.reset(); /// reset the timer
wray2303 0:6eba0e66ce01 281 PWM1 = 0.0; /// turn of the PWM
wray2303 0:6eba0e66ce01 282 } else {}
wray2303 0:6eba0e66ce01 283
wray2303 0:6eba0e66ce01 284 bullet.y=bullet.y-1; /// move the bullet up i.e. move its y coordinate
wray2303 0:6eba0e66ce01 285 bullet.createBullet(); /// draw new bullet
wray2303 0:6eba0e66ce01 286 bullet.erasePrevBullet(); /// erase previous position
wray2303 0:6eba0e66ce01 287
wray2303 0:6eba0e66ce01 288 ////////// double check this seems to help rid some bugs ////////////
wray2303 0:6eba0e66ce01 289 bullet.offScreen(); /// check if the bullet is off screen
wray2303 0:6eba0e66ce01 290 bullet.collision(); /// check if the bullet has collided with anything
wray2303 0:6eba0e66ce01 291 if (bullet.collision() == true||bullet.offScreen()==true) { /// if a collision is made or the bullet goes off the screen
wray2303 0:6eba0e66ce01 292 BulletExistsFlag=0;
wray2303 0:6eba0e66ce01 293 bullet.clearBullet(); /// clear the bullet
wray2303 0:6eba0e66ce01 294 readShoot.detach(); /// detach the ticker
wray2303 0:6eba0e66ce01 295 } else {}
wray2303 0:6eba0e66ce01 296
wray2303 0:6eba0e66ce01 297 if (printFlag) { /// here we are checking the position of the joystick, so the user can move while the bullet is shooting else where
wray2303 0:6eba0e66ce01 298 printFlag = 0;
wray2303 0:6eba0e66ce01 299 if (joystick.direction == LEFT && ship.xs>=7) {
wray2303 0:6eba0e66ce01 300 ship.ShipLeft();
wray2303 0:6eba0e66ce01 301 }
wray2303 0:6eba0e66ce01 302 if (joystick.direction == RIGHT && ship.xs<=76) {
wray2303 0:6eba0e66ce01 303 ship.ShipRight();
wray2303 0:6eba0e66ce01 304 } else {}
wray2303 0:6eba0e66ce01 305 }
wray2303 0:6eba0e66ce01 306 }
wray2303 0:6eba0e66ce01 307
wray2303 2:8d28a2f491eb 308
wray2303 0:6eba0e66ce01 309 void EndDisplay()
wray2303 0:6eba0e66ce01 310 {
wray2303 0:6eba0e66ce01 311 lcd.clear(); /// clear entire display to make way for end screen
wray2303 0:6eba0e66ce01 312 asteroid.nscore = asteroid.nscore-PauseNumber; /// takes points off for the asteroid destroyed when pausing game and destroy asteroid command sent
wray2303 3:39c95d65bee5 313 asteroid.nscore = asteroid.nscore-1;
wray2303 0:6eba0e66ce01 314 char buffer[14]; /// set buffer to 14, screen 84 pixels long , 6 pixel per char , 84/6 = 14
wray2303 0:6eba0e66ce01 315 int score = sprintf(buffer,"Score: %d",asteroid.nscore); /// print formatted data to buffer
wray2303 0:6eba0e66ce01 316 if (score <= 14) { /// if string will fit on display
wray2303 2:8d28a2f491eb 317 lcd.printString(buffer,20,5); /// display on screen
wray2303 0:6eba0e66ce01 318 }
wray2303 0:6eba0e66ce01 319
wray2303 2:8d28a2f491eb 320 Read(); /// read file to compare values
wray2303 2:8d28a2f491eb 321 if(asteroid.nscore>HighScore) { /// compare current score against highscore
wray2303 2:8d28a2f491eb 322 HighScore = asteroid.nscore; /// if current score is larger than highscore = current score
wray2303 2:8d28a2f491eb 323 Write(); /// write this to file
wray2303 2:8d28a2f491eb 324 }
wray2303 2:8d28a2f491eb 325 Read(); /// read the file to then print to lcd
wray2303 2:8d28a2f491eb 326 char buffer1[14]; /// set buffer to 14, screen 84 pixels long , 6 pixel per char , 84/6 = 14
wray2303 2:8d28a2f491eb 327 int Hscore = sprintf(buffer1,"HighScore:%d",HighScore); /// print formatted data to buffer
wray2303 0:6eba0e66ce01 328
wray2303 2:8d28a2f491eb 329 if (Hscore <= 14) { /// if string will fit on display
wray2303 2:8d28a2f491eb 330 lcd.printString(buffer1,7,4); /// display on screen
wray2303 2:8d28a2f491eb 331 }
wray2303 2:8d28a2f491eb 332 lcd.printString("game over !",12,0); /// closing message
wray2303 3:39c95d65bee5 333 lcd.printString("Press S5 to",10,1);
wray2303 2:8d28a2f491eb 334 lcd.printString("Play again",12,2);
wray2303 0:6eba0e66ce01 335 lcd.drawLine(0,0,0,47,1); /// draw outline
wray2303 0:6eba0e66ce01 336 lcd.drawLine(83,0,83,47,1);
wray2303 0:6eba0e66ce01 337 lcd.drawLine(0,0,83,0,1);
wray2303 0:6eba0e66ce01 338 lcd.drawLine(0,47,83,47,1);
wray2303 0:6eba0e66ce01 339 lcd.refresh(); /// refesh LCD to create this display
wray2303 0:6eba0e66ce01 340
wray2303 3:39c95d65bee5 341 while(!buttonP) { /// while button b has not been pressed sleep (save power)
wray2303 0:6eba0e66ce01 342 Sleep();
wray2303 0:6eba0e66ce01 343 }
wray2303 0:6eba0e66ce01 344 /// when button s pressed
wray2303 0:6eba0e66ce01 345 state = 0; /// set the state to 0 (intital game display
wray2303 0:6eba0e66ce01 346 asteroid.nscore=0; /// reset the score
wray2303 0:6eba0e66ce01 347 }
wray2303 0:6eba0e66ce01 348
wray2303 2:8d28a2f491eb 349
wray2303 0:6eba0e66ce01 350 void PauseDisplay()
wray2303 0:6eba0e66ce01 351 {
wray2303 0:6eba0e66ce01 352 lcd.printString("PAUSE",28,1); /// print pause display message
wray2303 0:6eba0e66ce01 353 lcd.printString("press S5 to",11,3);
wray2303 0:6eba0e66ce01 354 lcd.printString("resume",24,4);
wray2303 0:6eba0e66ce01 355 lcd.drawLine(0,0,0,47,1); /// draw outline
wray2303 0:6eba0e66ce01 356 lcd.drawLine(83,0,83,47,1);
wray2303 0:6eba0e66ce01 357 lcd.drawLine(0,0,83,0,1);
wray2303 0:6eba0e66ce01 358 lcd.drawLine(0,47,83,47,1);
wray2303 0:6eba0e66ce01 359 lcd.refresh();
wray2303 0:6eba0e66ce01 360 while(!buttonP) { /// while button P is not pressed Sleep() to save power
wray2303 0:6eba0e66ce01 361 Sleep();
wray2303 0:6eba0e66ce01 362 if(buttonP) { /// if button P is pressed
wray2303 0:6eba0e66ce01 363 lcd.clear(); /// clear LCD
wray2303 0:6eba0e66ce01 364 ship.shape(); /// draw the ship back on in position it was left
wray2303 0:6eba0e66ce01 365 GenAsteroidFlag = 1; /// reset the Generate asteroid flag
wray2303 0:6eba0e66ce01 366 PauseNumber = PauseNumber+1; /// increment pause amount counter
wray2303 0:6eba0e66ce01 367 state=1; /// state = 1 means back to the game in the switch statement
wray2303 0:6eba0e66ce01 368 }
wray2303 0:6eba0e66ce01 369 }
wray2303 0:6eba0e66ce01 370 }
wray2303 0:6eba0e66ce01 371
wray2303 3:39c95d65bee5 372 void endState()
wray2303 3:39c95d65bee5 373 {
wray2303 3:39c95d65bee5 374 state = 3;
wray2303 3:39c95d65bee5 375 }
wray2303 3:39c95d65bee5 376
wray2303 2:8d28a2f491eb 377
wray2303 0:6eba0e66ce01 378 void calibrateJoystick()
wray2303 0:6eba0e66ce01 379 {
wray2303 0:6eba0e66ce01 380 button.mode(PullDown);
wray2303 0:6eba0e66ce01 381 /// must not move during calibration
wray2303 0:6eba0e66ce01 382 joystick.x0 = xPot; /// initial positions in the range 0.0 to 1.0 (0.5 if centred exactly)
wray2303 0:6eba0e66ce01 383 joystick.y0 = yPot;
wray2303 0:6eba0e66ce01 384 }
wray2303 0:6eba0e66ce01 385
wray2303 2:8d28a2f491eb 386
wray2303 0:6eba0e66ce01 387 void updateJoystick()
wray2303 0:6eba0e66ce01 388 {
wray2303 0:6eba0e66ce01 389 /// reading the joystick position 0.0 is centered returns a value in the range -0.5 and 0.5
wray2303 0:6eba0e66ce01 390 joystick.x = xPot - joystick.x0;
wray2303 0:6eba0e66ce01 391 joystick.y = yPot - joystick.y0;
wray2303 0:6eba0e66ce01 392 /// read button state
wray2303 0:6eba0e66ce01 393 joystick.button = button;
wray2303 0:6eba0e66ce01 394
wray2303 0:6eba0e66ce01 395 /// calculate direction depending on x,y values
wray2303 0:6eba0e66ce01 396 /// tolerance allows a little lee-way in case joystick not exactly in the stated direction
wray2303 0:6eba0e66ce01 397 if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
wray2303 0:6eba0e66ce01 398 joystick.direction = CENTRE;
wray2303 0:6eba0e66ce01 399 } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
wray2303 0:6eba0e66ce01 400 joystick.direction = UP;
wray2303 0:6eba0e66ce01 401 } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
wray2303 0:6eba0e66ce01 402 joystick.direction = DOWN;
wray2303 0:6eba0e66ce01 403 } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
wray2303 0:6eba0e66ce01 404 joystick.direction = RIGHT;
wray2303 0:6eba0e66ce01 405 } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
wray2303 0:6eba0e66ce01 406 joystick.direction = LEFT;
wray2303 0:6eba0e66ce01 407 } else {
wray2303 0:6eba0e66ce01 408 joystick.direction = UNKNOWN;
wray2303 0:6eba0e66ce01 409 }
wray2303 0:6eba0e66ce01 410 /// set flag for use of the joystick position
wray2303 0:6eba0e66ce01 411 printFlag = 1;
wray2303 0:6eba0e66ce01 412 }