renhao dai / Mbed 2 deprecated Joystick_snake_game

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Dependencies:   N5110 mbed

main.cpp@10:67e13dfaa10d, 2015-05-10 (annotated)

Committer:
el14rd
Date:
Sun May 10 20:48:51 2015 +0000
Revision:
10:67e13dfaa10d
Parent:
9:c8ea9b4af873 
Final version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el14rd 10:67e13dfaa10d 1 /**
el14rd 10:67e13dfaa10d 2 @file main.cpp
el14rd 10:67e13dfaa10d 3 @brief Program implementation
el14rd 10:67e13dfaa10d 4 @brief cpp file containing total program include main function, functions prototypes, defines and global variables.
el14rd 10:67e13dfaa10d 5 @brief hand-held joystick snake gmae
el14rd 10:67e13dfaa10d 6 @author Renhao Dai
el14rd 10:67e13dfaa10d 7 @date MAY 2015
el14rd 10:67e13dfaa10d 8 */
eencae 0:026fa541af7a 9 #include "mbed.h"
el14rd 1:f682aeb462f1 10 #include "N5110.h"
eencae 0:026fa541af7a 11 #define DIRECTION_TOLERANCE 0.05
eencae 0:026fa541af7a 12
el14rd 10:67e13dfaa10d 13 /**
el14rd 10:67e13dfaa10d 14 @namespace lcd
el14rd 10:67e13dfaa10d 15 @brief GPIO output for LCD
el14rd 10:67e13dfaa10d 16 */ //pins in
el14rd 1:f682aeb462f1 17 N5110 lcd(p7,p8,p9,p10,p11,p13,p26);
el14rd 10:67e13dfaa10d 18 PwmOut blacklight(p26);
el14rd 10:67e13dfaa10d 19
el14rd 10:67e13dfaa10d 20 /**
el14rd 10:67e13dfaa10d 21 @namespace joystick
el14rd 10:67e13dfaa10d 22 @brief GPIO input for joystick
el14rd 10:67e13dfaa10d 23 */
el14rd 8:b01f638d23b4 24 InterruptIn button(p17);
el14rd 9:c8ea9b4af873 25 AnalogIn xPot(p15); // connections for joystick
el14rd 1:f682aeb462f1 26 AnalogIn yPot(p16);
el14rd 10:67e13dfaa10d 27
el14rd 10:67e13dfaa10d 28 /**
el14rd 10:67e13dfaa10d 29 @namespace buttonA
el14rd 10:67e13dfaa10d 30 @brief GPIO input for button
el14rd 10:67e13dfaa10d 31 */
el14rd 10:67e13dfaa10d 32 DigitalIn buttonA(p19);
el14rd 10:67e13dfaa10d 33
el14rd 10:67e13dfaa10d 34 /**
el14rd 10:67e13dfaa10d 35 @namespace pot
el14rd 10:67e13dfaa10d 36 @brief GPIO input for potentiometer
el14rd 10:67e13dfaa10d 37 */
el14rd 10:67e13dfaa10d 38 AnalogIn pot(p20);
el14rd 10:67e13dfaa10d 39
el14rd 10:67e13dfaa10d 40 /**
el14rd 10:67e13dfaa10d 41 @namespace buzzer
el14rd 10:67e13dfaa10d 42 @brief GPIO output for buzzer
el14rd 10:67e13dfaa10d 43 */
el14rd 4:41acda9d68c7 44 PwmOut buzzer(p21);
el14rd 10:67e13dfaa10d 45
el14rd 10:67e13dfaa10d 46 /**
el14rd 10:67e13dfaa10d 47 @namespace led
el14rd 10:67e13dfaa10d 48 @brief GPIO output for LED
el14rd 10:67e13dfaa10d 49 */
el14rd 4:41acda9d68c7 50 PwmOut led1(p24);
el14rd 4:41acda9d68c7 51 PwmOut led2(p23);
el14rd 8:b01f638d23b4 52 BusOut leds(LED4,LED3,LED2,LED1);
el14rd 4:41acda9d68c7 53
el14rd 10:67e13dfaa10d 54 float ain; /*!< variable in potentiometer */
el14rd 10:67e13dfaa10d 55 int i; /*!< variable in coordinate of snake */
el14rd 1:f682aeb462f1 56 int j;
el14rd 10:67e13dfaa10d 57 int X; /*!< variable in coordinate of nut */
el14rd 2:d7b17623ba26 58 int Y;
el14rd 10:67e13dfaa10d 59 char buffer[14]; /*!< array for character */
el14rd 1:f682aeb462f1 60
el14rd 10:67e13dfaa10d 61 int snakeX[100]; /*!< array for x axis coordinate */
el14rd 10:67e13dfaa10d 62 int snakeY[100]; /*!< array for y axis coordinate */
eencae 0:026fa541af7a 63
eencae 0:026fa541af7a 64 // timer to regularly read the joystick
eencae 0:026fa541af7a 65 Ticker pollJoystick;
eencae 0:026fa541af7a 66 // Serial for debug
eencae 0:026fa541af7a 67 Serial serial(USBTX,USBRX);
eencae 0:026fa541af7a 68
eencae 0:026fa541af7a 69 // create enumerated type (0,1,2,3 etc. for direction)
eencae 0:026fa541af7a 70 // could be extended for diagonals etc.
eencae 0:026fa541af7a 71 enum DirectionName {
eencae 0:026fa541af7a 72 UP,
eencae 0:026fa541af7a 73 DOWN,
eencae 0:026fa541af7a 74 LEFT,
eencae 0:026fa541af7a 75 RIGHT,
eencae 0:026fa541af7a 76 CENTRE,
eencae 0:026fa541af7a 77 UNKNOWN
eencae 0:026fa541af7a 78 };
eencae 0:026fa541af7a 79
el14rd 10:67e13dfaa10d 80 /// struct for Joystick
eencae 0:026fa541af7a 81 typedef struct JoyStick Joystick;
eencae 0:026fa541af7a 82 struct JoyStick {
el14rd 10:67e13dfaa10d 83 float x; /// current x value
el14rd 10:67e13dfaa10d 84 float x0; /// 'centred' x value
el14rd 10:67e13dfaa10d 85 float y; /// current y value
el14rd 10:67e13dfaa10d 86 float y0; /// 'centred' y value
el14rd 10:67e13dfaa10d 87 int button; /// button state (assume pull-down used, so 1 = pressed, 0 = unpressed)
el14rd 10:67e13dfaa10d 88 DirectionName direction; /// current direction
eencae 0:026fa541af7a 89 };
el14rd 10:67e13dfaa10d 90 /// create struct variable
eencae 0:026fa541af7a 91 Joystick joystick;
eencae 0:026fa541af7a 92
el14rd 10:67e13dfaa10d 93 int pause = 0; /*!< pause flag set in ISR */
el14rd 10:67e13dfaa10d 94 int buttonFlag = 0; /*!< button flag set in ISR */
el14rd 10:67e13dfaa10d 95 int printFlag = 0; /*!< print flag set in ISR */
el14rd 10:67e13dfaa10d 96 int nutFlag =1; /*!< nut flag set in ISR */
el14rd 10:67e13dfaa10d 97 int lifeFlag =0; /*!< lifet flag set in ISR */
el14rd 10:67e13dfaa10d 98 float frequency[]= {659,554,659,554,550,494,554,587,494,659,554,440}; /*!< array for the tone frequency */
el14rd 10:67e13dfaa10d 99 float beat[]= {1,1,1,1,1,0.5,0.5,1,1,1,1,2}; /*!< array for time span */
el14rd 1:f682aeb462f1 100
el14rd 10:67e13dfaa10d 101 /// struct for nut
el14rd 1:f682aeb462f1 102 typedef struct Nut Nut;
el14rd 1:f682aeb462f1 103 struct Nut {
el14rd 10:67e13dfaa10d 104 int X; /// coordinate in x axis
el14rd 10:67e13dfaa10d 105 int Y; /// coordinate in y axis
el14rd 1:f682aeb462f1 106 };
el14rd 10:67e13dfaa10d 107 /// create struct variable
el14rd 1:f682aeb462f1 108 Nut nut;
eencae 0:026fa541af7a 109
el14rd 10:67e13dfaa10d 110 /// struct for snake
el14rd 1:f682aeb462f1 111 typedef struct Snake Snake;
el14rd 1:f682aeb462f1 112 struct Snake {
el14rd 10:67e13dfaa10d 113 int snakeX[100]; /// array in x axis
el14rd 10:67e13dfaa10d 114 int snakeY[100]; /// array in y axis
el14rd 10:67e13dfaa10d 115 int node; /// number of node
el14rd 10:67e13dfaa10d 116 DirectionName direction; /// direction virable
el14rd 1:f682aeb462f1 117 };
el14rd 10:67e13dfaa10d 118 /// create struct variable
el14rd 1:f682aeb462f1 119 Snake snake;
eencae 0:026fa541af7a 120
el14rd 10:67e13dfaa10d 121 /// definition for snake direction
el14rd 1:f682aeb462f1 122 DirectionName snakeDirection;
el14rd 1:f682aeb462f1 123
el14rd 10:67e13dfaa10d 124
el14rd 2:d7b17623ba26 125 void initNut()
el14rd 10:67e13dfaa10d 126 { ///set the coordinate of nut randomly
el14rd 3:04ff8cd27dd1 127 nut.X=rand()%84;
el14rd 3:04ff8cd27dd1 128 nut.Y=rand()%48;
el14rd 8:b01f638d23b4 129 }
el14rd 8:b01f638d23b4 130
el14rd 2:d7b17623ba26 131 void drawNut()
el14rd 10:67e13dfaa10d 132 { ///draw nut
el14rd 8:b01f638d23b4 133 if(nutFlag==1) {
el14rd 8:b01f638d23b4 134 lcd.drawCircle(nut.X,nut.Y,1,1);
el14rd 3:04ff8cd27dd1 135 }
el14rd 2:d7b17623ba26 136 }
eencae 0:026fa541af7a 137
el14rd 1:f682aeb462f1 138 void moveSnake()
el14rd 1:f682aeb462f1 139 {
el14rd 8:b01f638d23b4 140
el14rd 8:b01f638d23b4 141 if(joystick.direction == CENTRE) {
el14rd 10:67e13dfaa10d 142 ///does not make any changes
el14rd 4:41acda9d68c7 143 joystick.direction = CENTRE;
el14rd 10:67e13dfaa10d 144 } else if(joystick.direction == UNKNOWN) {
el14rd 10:67e13dfaa10d 145 //does not make any changes
el14rd 8:b01f638d23b4 146 joystick.direction = UNKNOWN;
el14rd 10:67e13dfaa10d 147
el14rd 8:b01f638d23b4 148 } else if(joystick.direction != UNKNOWN&&joystick.direction != CENTRE) {
el14rd 2:d7b17623ba26 149
el14rd 4:41acda9d68c7 150 if((joystick.direction == DOWN)&&(snake.direction!=LEFT)) {
el14rd 10:67e13dfaa10d 151 ///sent rightward direction to snake.direction
el14rd 2:d7b17623ba26 152 snake.direction= RIGHT;
el14rd 8:b01f638d23b4 153
el14rd 4:41acda9d68c7 154 } else if((joystick.direction == UP)&&(snake.direction!=RIGHT)) {
el14rd 10:67e13dfaa10d 155 ///sent leftward direction to snake.direction
el14rd 2:d7b17623ba26 156 snake.direction=LEFT;
el14rd 10:67e13dfaa10d 157
el14rd 4:41acda9d68c7 158 } else if((joystick.direction == LEFT)&&(snake.direction!=DOWN)) {
el14rd 10:67e13dfaa10d 159 ///sent upward direction to snake.direction
el14rd 5:d8a06e7c54fb 160 snake.direction=UP;
el14rd 10:67e13dfaa10d 161
el14rd 4:41acda9d68c7 162 } else if((joystick.direction == RIGHT)&&(snake.direction!=UP)) {
el14rd 10:67e13dfaa10d 163 ///sent downward direction to snake.direction
el14rd 5:d8a06e7c54fb 164 snake.direction=DOWN;
el14rd 10:67e13dfaa10d 165
eencae 0:026fa541af7a 166 }
eencae 0:026fa541af7a 167
eencae 0:026fa541af7a 168 }
el14rd 8:b01f638d23b4 169
el14rd 2:d7b17623ba26 170 }
el14rd 2:d7b17623ba26 171
el14rd 2:d7b17623ba26 172 void initSnake()
el14rd 2:d7b17623ba26 173 {
el14rd 10:67e13dfaa10d 174 ///define initial coordinate of snake
el14rd 10:67e13dfaa10d 175 snake.snakeX[0] = 16; ///coordinate of head
el14rd 2:d7b17623ba26 176 snake.snakeY[0] = 10;
el14rd 5:d8a06e7c54fb 177 snake.snakeX[1] = 14;
el14rd 2:d7b17623ba26 178 snake.snakeY[1] = 10;
el14rd 4:41acda9d68c7 179 snake.snakeX[2] = 12;
el14rd 2:d7b17623ba26 180 snake.snakeY[2] = 10;
el14rd 5:d8a06e7c54fb 181 snake.snakeX[3] = 10;
el14rd 2:d7b17623ba26 182 snake.snakeY[3] = 10;
el14rd 10:67e13dfaa10d 183 snake.node = 5; ///node of snake
el14rd 10:67e13dfaa10d 184 snake.direction = RIGHT;///initialize the direction of snake
el14rd 8:b01f638d23b4 185
el14rd 5:d8a06e7c54fb 186 }
el14rd 8:b01f638d23b4 187
el14rd 8:b01f638d23b4 188
el14rd 1:f682aeb462f1 189 void drawSnake()
el14rd 8:b01f638d23b4 190 {
el14rd 10:67e13dfaa10d 191 ///each node is a circle with 1 pixel radius
el14rd 8:b01f638d23b4 192 for(i=0; i<snake.node-1; i++) {
el14rd 5:d8a06e7c54fb 193 lcd.drawCircle(snake.snakeX[i],snake.snakeY[i],1,1);
el14rd 8:b01f638d23b4 194 }
el14rd 8:b01f638d23b4 195
el14rd 1:f682aeb462f1 196 }
el14rd 1:f682aeb462f1 197
el14rd 1:f682aeb462f1 198 void startGmae()
el14rd 1:f682aeb462f1 199 {
el14rd 10:67e13dfaa10d 200 ///occasion that snake eats nut
el14rd 10:67e13dfaa10d 201 if((snake.snakeX[0]==nut.X)&&(snake.snakeY[0]==nut.Y)) {
el14rd 8:b01f638d23b4 202 snake.node+=1;
el14rd 10:67e13dfaa10d 203 nutFlag=0; /// new nut appear
el14rd 10:67e13dfaa10d 204 buzzer.period(1/frequency[1]); /// set PWM period
el14rd 10:67e13dfaa10d 205 buzzer=0.1; /// set duty cycle
el14rd 3:04ff8cd27dd1 206 }
el14rd 8:b01f638d23b4 207
el14rd 8:b01f638d23b4 208 if((snake.snakeX[0]!=nut.X)||(snake.snakeY[0]!=nut.Y)) {
el14rd 10:67e13dfaa10d 209 ///if snake gets nut, play a beep
el14rd 8:b01f638d23b4 210 buzzer=0;
el14rd 8:b01f638d23b4 211 }
el14rd 8:b01f638d23b4 212
el14rd 10:67e13dfaa10d 213 if(nutFlag==0) {
el14rd 10:67e13dfaa10d 214 ///reset nut randomly
el14rd 1:f682aeb462f1 215 nut.X = rand()%83;
el14rd 1:f682aeb462f1 216 nut.Y = rand()%47;
el14rd 3:04ff8cd27dd1 217 nutFlag = 1;
el14rd 1:f682aeb462f1 218 }
el14rd 2:d7b17623ba26 219
el14rd 8:b01f638d23b4 220
el14rd 10:67e13dfaa10d 221 for(i=3; i<snake.node; i++) {
el14rd 10:67e13dfaa10d 222 ///if snake collide itself snake die
el14rd 8:b01f638d23b4 223 if(snake.snakeX[i]==snake.snakeX[0] && snake.snakeY[i]==snake.snakeY[0]) {
el14rd 8:b01f638d23b4 224 lifeFlag=1;
el14rd 7:69ae0585d11a 225 }
el14rd 8:b01f638d23b4 226 }
el14rd 8:b01f638d23b4 227
el14rd 8:b01f638d23b4 228
el14rd 10:67e13dfaa10d 229 for(i=snake.node-1; i>0; i--) {
el14rd 10:67e13dfaa10d 230 ///move snake
el14rd 8:b01f638d23b4 231 if(snake.snakeX[0]>1||snake.snakeX[0]<83||snake.snakeY[0]>1||snake.snakeY[0]<47) {
el14rd 8:b01f638d23b4 232 snake.snakeX[i]=snake.snakeX[i-1];
el14rd 8:b01f638d23b4 233 snake.snakeY[i]=snake.snakeY[i-1];
el14rd 8:b01f638d23b4 234 } else {
el14rd 8:b01f638d23b4 235 snake.snakeX[i]=snake.snakeX[i];
el14rd 8:b01f638d23b4 236 snake.snakeY[i]=snake.snakeY[i];
el14rd 8:b01f638d23b4 237 }
el14rd 8:b01f638d23b4 238 }
el14rd 8:b01f638d23b4 239
el14rd 1:f682aeb462f1 240
el14rd 1:f682aeb462f1 241 if(snake.snakeX[0]<1||snake.snakeX[0]>83||snake.snakeY[0]<1||snake.snakeY[0]>47) {
el14rd 10:67e13dfaa10d 242 /// snake collide the corrider snake die
el14rd 10:67e13dfaa10d 243 lifeFlag=1;
el14rd 1:f682aeb462f1 244 }
el14rd 8:b01f638d23b4 245
el14rd 1:f682aeb462f1 246 }
el14rd 1:f682aeb462f1 247
el14rd 8:b01f638d23b4 248 void printScore()
el14rd 10:67e13dfaa10d 249 { ///print characters on map at coordiante 0,0
el14rd 6:290173d4a22d 250 lcd.printString("Your Score is",0,0);
el14rd 10:67e13dfaa10d 251 ///print score
el14rd 10:67e13dfaa10d 252 int score=snake.node-4;
el14rd 6:290173d4a22d 253 int length = sprintf(buffer," SCORE=%2d ",score);
el14rd 8:b01f638d23b4 254 lcd.printString(buffer,0,2 );
el14rd 10:67e13dfaa10d 255 ///print characters on map at coordiante 0,4
el14rd 6:290173d4a22d 256 lcd.printString("Press to start",0,4);
el14rd 8:b01f638d23b4 257 }
el14rd 7:69ae0585d11a 258
el14rd 8:b01f638d23b4 259 void buttonPressed()
el14rd 10:67e13dfaa10d 260 { ///button Flag set
el14rd 8:b01f638d23b4 261 buttonFlag =1;
el14rd 7:69ae0585d11a 262 }
el14rd 7:69ae0585d11a 263
el14rd 8:b01f638d23b4 264 void snakeModel()
el14rd 10:67e13dfaa10d 265 { ///set moving snake model
el14rd 8:b01f638d23b4 266 for(int i=0; i<25; i+=5) {
el14rd 8:b01f638d23b4 267 lcd.clear();
el14rd 8:b01f638d23b4 268 lcd.printString("Press to start",1,1);
el14rd 8:b01f638d23b4 269
el14rd 8:b01f638d23b4 270 lcd.drawRect(44-i,21,1,1,1);
el14rd 8:b01f638d23b4 271 lcd.drawRect(46-i,21,1,1,1);
el14rd 8:b01f638d23b4 272 lcd.drawRect(48-i,21,1,1,1);
el14rd 8:b01f638d23b4 273
el14rd 8:b01f638d23b4 274 lcd.drawRect(42-i,23,1,1,1);
el14rd 8:b01f638d23b4 275 lcd.drawRect(44-i,23,1,1,1);
el14rd 8:b01f638d23b4 276 lcd.drawRect(46-i,23,1,1,1);
el14rd 8:b01f638d23b4 277 lcd.drawRect(48-i,23,1,1,1);
el14rd 8:b01f638d23b4 278
el14rd 8:b01f638d23b4 279 lcd.drawRect(40-i,25,1,1,1);
el14rd 8:b01f638d23b4 280 lcd.drawRect(42-i,25,1,1,1);
el14rd 8:b01f638d23b4 281 lcd.drawRect(44-i,25,1,1,1);
el14rd 8:b01f638d23b4 282 lcd.drawRect(46-i,25,1,1,1);
el14rd 8:b01f638d23b4 283 lcd.drawRect(48-i,25,1,1,1);
el14rd 8:b01f638d23b4 284 lcd.drawRect(50-i,25,1,1,1);
el14rd 8:b01f638d23b4 285
el14rd 8:b01f638d23b4 286 lcd.drawRect(40-i,27,1,1,1);
el14rd 8:b01f638d23b4 287 lcd.drawRect(42-i,27,1,1,1);
el14rd 8:b01f638d23b4 288 lcd.drawRect(44-i,27,1,1,1);
el14rd 8:b01f638d23b4 289 lcd.drawRect(46-i,27,1,1,1);
el14rd 8:b01f638d23b4 290 lcd.drawRect(48-i,27,1,1,1);
el14rd 10:67e13dfaa10d 291 lcd.drawRect(50-i,27,1,1,1); ///head
el14rd 8:b01f638d23b4 292
el14rd 10:67e13dfaa10d 293 lcd.drawRect(38-i,29,1,1,0); ///tougue
el14rd 8:b01f638d23b4 294 lcd.drawRect(40-i,31,1,1,0);
el14rd 8:b01f638d23b4 295
el14rd 8:b01f638d23b4 296 lcd.drawRect(46-i,29,1,1,1);
el14rd 8:b01f638d23b4 297 lcd.drawRect(48-i,29,1,1,1);
el14rd 8:b01f638d23b4 298 lcd.drawRect(50-i,29,1,1,1);
el14rd 8:b01f638d23b4 299
el14rd 8:b01f638d23b4 300 lcd.drawRect(46-i,31,1,1,1);
el14rd 8:b01f638d23b4 301 lcd.drawRect(48-i,31,1,1,1);
el14rd 8:b01f638d23b4 302 lcd.drawRect(50-i,31,1,1,1);
el14rd 8:b01f638d23b4 303
el14rd 8:b01f638d23b4 304 lcd.drawRect(44-i,33,1,1,1);
el14rd 8:b01f638d23b4 305 lcd.drawRect(46-i,33,1,1,1);
el14rd 8:b01f638d23b4 306 lcd.drawRect(48-i,33,1,1,1);
el14rd 8:b01f638d23b4 307
el14rd 8:b01f638d23b4 308 lcd.drawRect(44-i,35,1,1,1);
el14rd 8:b01f638d23b4 309 lcd.drawRect(46-i,35,1,1,1);
el14rd 8:b01f638d23b4 310 lcd.drawRect(48-i,35,1,1,1);
el14rd 8:b01f638d23b4 311
el14rd 8:b01f638d23b4 312 lcd.drawRect(42-i,37,1,1,1);
el14rd 8:b01f638d23b4 313 lcd.drawRect(44-i,37,1,1,1);
el14rd 8:b01f638d23b4 314 lcd.drawRect(46-i,37,1,1,1);
el14rd 6:290173d4a22d 315
el14rd 8:b01f638d23b4 316 lcd.drawRect(42-i,39,1,1,1);
el14rd 8:b01f638d23b4 317 lcd.drawRect(44-i,39,1,1,1);
el14rd 8:b01f638d23b4 318 lcd.drawRect(46-i,39,1,1,1);
el14rd 8:b01f638d23b4 319
el14rd 8:b01f638d23b4 320 lcd.drawRect(44-i,41,1,1,1);
el14rd 8:b01f638d23b4 321 lcd.drawRect(46-i,41,1,1,1);
el14rd 8:b01f638d23b4 322 lcd.drawRect(48-i,41,1,1,1);
el14rd 10:67e13dfaa10d 323 lcd.drawRect(50-i,41,1,1,1);///neck
el14rd 8:b01f638d23b4 324
el14rd 10:67e13dfaa10d 325 lcd.drawRect(80-i,41,1,1,1);///tail
el14rd 8:b01f638d23b4 326 lcd.drawRect(82-i,41,1,1,1);
el14rd 8:b01f638d23b4 327 lcd.drawRect(84-i,41,1,1,1);
el14rd 8:b01f638d23b4 328
el14rd 8:b01f638d23b4 329 lcd.drawRect(82-i,39,1,1,1);
el14rd 8:b01f638d23b4 330 lcd.drawRect(84-i,39,1,1,1);
el14rd 8:b01f638d23b4 331
el14rd 8:b01f638d23b4 332 lcd.drawRect(82-i,37,1,1,1);
el14rd 8:b01f638d23b4 333
el14rd 10:67e13dfaa10d 334 lcd.drawRect(80-i,35,1,1,1);///tail
el14rd 8:b01f638d23b4 335
el14rd 8:b01f638d23b4 336 lcd.drawRect(46-i,43,1,1,1);
el14rd 8:b01f638d23b4 337 lcd.drawRect(48-i,43,1,1,1);
el14rd 8:b01f638d23b4 338 lcd.drawRect(50-i,43,1,1,1);
el14rd 8:b01f638d23b4 339 lcd.drawRect(52-i,43,1,1,1);
el14rd 8:b01f638d23b4 340 lcd.drawRect(54-i,43,1,1,1);
el14rd 8:b01f638d23b4 341 lcd.drawRect(56-i,43,1,1,1);
el14rd 8:b01f638d23b4 342 lcd.drawRect(58-i,43,1,1,1);
el14rd 8:b01f638d23b4 343 lcd.drawRect(60-i,43,1,1,1);
el14rd 8:b01f638d23b4 344 lcd.drawRect(62-i,43,1,1,1);
el14rd 8:b01f638d23b4 345 lcd.drawRect(64-i,43,1,1,1);
el14rd 8:b01f638d23b4 346 lcd.drawRect(66-i,43,1,1,1);
el14rd 8:b01f638d23b4 347 lcd.drawRect(68-i,43,1,1,1);
el14rd 8:b01f638d23b4 348 lcd.drawRect(70-i,43,1,1,1);
el14rd 8:b01f638d23b4 349 lcd.drawRect(72-i,43,1,1,1);
el14rd 8:b01f638d23b4 350 lcd.drawRect(74-i,43,1,1,1);
el14rd 8:b01f638d23b4 351 lcd.drawRect(76-i,43,1,1,1);
el14rd 8:b01f638d23b4 352 lcd.drawRect(78-i,43,1,1,1);
el14rd 8:b01f638d23b4 353 lcd.drawRect(80-i,43,1,1,1);
el14rd 8:b01f638d23b4 354 lcd.drawRect(82-i,43,1,1,1);
el14rd 8:b01f638d23b4 355
el14rd 8:b01f638d23b4 356 lcd.drawRect(48-i,45,1,1,1);
el14rd 8:b01f638d23b4 357 lcd.drawRect(50-i,45,1,1,1);
el14rd 8:b01f638d23b4 358 lcd.drawRect(52-i,45,1,1,1);
el14rd 8:b01f638d23b4 359 lcd.drawRect(54-i,45,1,1,1);
el14rd 8:b01f638d23b4 360 lcd.drawRect(56-i,45,1,1,1);
el14rd 8:b01f638d23b4 361 lcd.drawRect(58-i,45,1,1,1);
el14rd 8:b01f638d23b4 362 lcd.drawRect(60-i,45,1,1,1);
el14rd 8:b01f638d23b4 363 lcd.drawRect(62-i,45,1,1,1);
el14rd 8:b01f638d23b4 364 lcd.drawRect(64-i,45,1,1,1);
el14rd 8:b01f638d23b4 365 lcd.drawRect(66-i,45,1,1,1);
el14rd 8:b01f638d23b4 366 lcd.drawRect(68-i,45,1,1,1);
el14rd 8:b01f638d23b4 367 lcd.drawRect(70-i,45,1,1,1);
el14rd 8:b01f638d23b4 368 lcd.drawRect(72-i,45,1,1,1);
el14rd 8:b01f638d23b4 369 lcd.drawRect(74-i,45,1,1,1);
el14rd 8:b01f638d23b4 370 lcd.drawRect(76-i,45,1,1,1);
el14rd 8:b01f638d23b4 371 lcd.drawRect(78-i,45,1,1,1);
el14rd 8:b01f638d23b4 372 lcd.drawRect(80-i,45,1,1,1);
el14rd 7:69ae0585d11a 373 wait(0.5);
el14rd 8:b01f638d23b4 374 //lcd.refresh();
el14rd 7:69ae0585d11a 375 }
el14rd 8:b01f638d23b4 376
el14rd 8:b01f638d23b4 377 }
el14rd 1:f682aeb462f1 378
el14rd 10:67e13dfaa10d 379 /// read default positions of the joystick to calibrate later readings
eencae 0:026fa541af7a 380 void calibrateJoystick()
eencae 0:026fa541af7a 381 {
el14rd 10:67e13dfaa10d 382 button.mode(PullDown); ///must not move during calibration
el14rd 10:67e13dfaa10d 383 joystick.x0 = xPot; ///initial positions in the range 0.0 to 1.0 (0.5 if centred exactly)
eencae 0:026fa541af7a 384 joystick.y0 = yPot;
eencae 0:026fa541af7a 385 }
el14rd 1:f682aeb462f1 386
el14rd 2:d7b17623ba26 387
eencae 0:026fa541af7a 388 void updateJoystick()
eencae 0:026fa541af7a 389 {
el14rd 10:67e13dfaa10d 390 /// read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred)
eencae 0:026fa541af7a 391 joystick.x = xPot - joystick.x0;
eencae 0:026fa541af7a 392 joystick.y = yPot - joystick.y0;
el14rd 10:67e13dfaa10d 393 /// read button state
eencae 0:026fa541af7a 394 joystick.button = button;
el14rd 10:67e13dfaa10d 395 /// calculate direction depending on x,y values
el14rd 10:67e13dfaa10d 396 /// tolerance allows a little lee-way in case joystick not exactly in the stated direction
eencae 0:026fa541af7a 397 if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
eencae 0:026fa541af7a 398 joystick.direction = CENTRE;
eencae 0:026fa541af7a 399 } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
eencae 0:026fa541af7a 400 joystick.direction = UP;
eencae 0:026fa541af7a 401 } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
eencae 0:026fa541af7a 402 joystick.direction = DOWN;
eencae 0:026fa541af7a 403 } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
eencae 0:026fa541af7a 404 joystick.direction = RIGHT;
eencae 0:026fa541af7a 405 } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
eencae 0:026fa541af7a 406 joystick.direction = LEFT;
eencae 0:026fa541af7a 407 } else {
eencae 0:026fa541af7a 408 joystick.direction = UNKNOWN;
eencae 0:026fa541af7a 409 }
el14rd 10:67e13dfaa10d 410 /// set flag for printing
eencae 0:026fa541af7a 411 printFlag = 1;
el14rd 1:f682aeb462f1 412 }
el14rd 1:f682aeb462f1 413
el14rd 1:f682aeb462f1 414 void updateSnake()
el14rd 1:f682aeb462f1 415 {
el14rd 10:67e13dfaa10d 416 /// get direction of joystick and update snake
el14rd 4:41acda9d68c7 417 if (snake.direction == LEFT) {
el14rd 7:69ae0585d11a 418 snake.snakeX[0]-=1;
el14rd 10:67e13dfaa10d 419 ///will stop at the top edge
el14rd 4:41acda9d68c7 420 if(snake.snakeX[0]<1) {
el14rd 4:41acda9d68c7 421 snake.snakeX[0]=1;
el14rd 10:67e13dfaa10d 422 }
el14rd 1:f682aeb462f1 423 }
el14rd 4:41acda9d68c7 424 if (snake.direction == RIGHT) {
el14rd 7:69ae0585d11a 425 snake.snakeX[0]+=1;
el14rd 10:67e13dfaa10d 426 ///will stop at the bottom edge
el14rd 4:41acda9d68c7 427 if(snake.snakeX[0]>83) {
el14rd 4:41acda9d68c7 428 snake.snakeX[0]=83;
el14rd 10:67e13dfaa10d 429 }
el14rd 1:f682aeb462f1 430 }
el14rd 4:41acda9d68c7 431 if (snake.direction == UP) {
el14rd 7:69ae0585d11a 432 snake.snakeY[0]-=1;
el14rd 10:67e13dfaa10d 433 ///will stop at the left edge
el14rd 4:41acda9d68c7 434 if(snake.snakeY[0]>47) {
el14rd 4:41acda9d68c7 435 snake.snakeY[0]=47;
el14rd 10:67e13dfaa10d 436 }
el14rd 1:f682aeb462f1 437 }
el14rd 4:41acda9d68c7 438 if (snake.direction == DOWN) {
el14rd 7:69ae0585d11a 439 snake.snakeY[0]+=1;
el14rd 10:67e13dfaa10d 440 ///will stop at the right edge
el14rd 4:41acda9d68c7 441 if(snake.snakeY[0]<1) {
el14rd 4:41acda9d68c7 442 snake.snakeY[0]=1;
el14rd 10:67e13dfaa10d 443 }
el14rd 1:f682aeb462f1 444 }
el14rd 8:b01f638d23b4 445 if(snake.direction == CENTRE) {
el14rd 4:41acda9d68c7 446 snake.snakeX[0]+=1;
el14rd 8:b01f638d23b4 447 }
el14rd 8:b01f638d23b4 448 if(snake.direction == UNKNOWN) {
el14rd 5:d8a06e7c54fb 449 snake.snakeX[0]+=1;
el14rd 8:b01f638d23b4 450 }
el14rd 1:f682aeb462f1 451 }
el14rd 1:f682aeb462f1 452
el14rd 1:f682aeb462f1 453
el14rd 10:67e13dfaa10d 454 ///main code
el14rd 1:f682aeb462f1 455 int main()
el14rd 1:f682aeb462f1 456 {
el14rd 10:67e13dfaa10d 457 /// function prototypes
el14rd 10:67e13dfaa10d 458 lcd.init(); /// initialize the lcd
el14rd 10:67e13dfaa10d 459 lcd.setBrightness(0.5); /// put LED backlight on 50%
el14rd 10:67e13dfaa10d 460 calibrateJoystick(); /// get centred values of joystick
el14rd 10:67e13dfaa10d 461 pollJoystick.attach(&updateJoystick,1.0/10.0); /// read joystick 10 times per second
el14rd 10:67e13dfaa10d 462 lcd.refresh(); /// refresh the screen
el14rd 10:67e13dfaa10d 463 initNut(); /// create a nut
el14rd 10:67e13dfaa10d 464 initSnake(); /// create a snake
el14rd 10:67e13dfaa10d 465 button.rise(&buttonPressed); ///event generated on rising edge
el14rd 10:67e13dfaa10d 466 buttonA.mode(PullDown); ///
el14rd 10:67e13dfaa10d 467
el14rd 10:67e13dfaa10d 468 ///infinite while loop to execute the game
el14rd 1:f682aeb462f1 469 while(1) {
el14rd 10:67e13dfaa10d 470
el14rd 10:67e13dfaa10d 471 if(buttonFlag==0) { ///joystick button unpressed
el14rd 8:b01f638d23b4 472 lcd.printString("Press to start",1,1);
el14rd 8:b01f638d23b4 473 snakeModel();
el14rd 10:67e13dfaa10d 474 led1=1; ///red LED illuminate
el14rd 8:b01f638d23b4 475 } else {
el14rd 10:67e13dfaa10d 476
el14rd 10:67e13dfaa10d 477 led1=0; ///red LED off
el14rd 10:67e13dfaa10d 478 led2=1; ///green LED on
el14rd 10:67e13dfaa10d 479 leds = 0; /// all status LED off
el14rd 8:b01f638d23b4 480
el14rd 10:67e13dfaa10d 481 if(buttonA) { ///if button pressed, toggle pause
el14rd 8:b01f638d23b4 482 wait_ms(50);
el14rd 10:67e13dfaa10d 483 pause = !pause; ///pause the game
el14rd 8:b01f638d23b4 484 leds = 15;
el14rd 10:67e13dfaa10d 485 led2=0; /// green LED off
el14rd 10:67e13dfaa10d 486 led1=1; /// red LED on
el14rd 8:b01f638d23b4 487 }
el14rd 8:b01f638d23b4 488
el14rd 10:67e13dfaa10d 489 while(pause) {///if pause==1
el14rd 8:b01f638d23b4 490 leds = 3;
el14rd 10:67e13dfaa10d 491 if(buttonA) { /// if button pressed, toggle pause
el14rd 8:b01f638d23b4 492 wait_ms(50);
el14rd 10:67e13dfaa10d 493 pause = 0; ///set pause to 0
el14rd 10:67e13dfaa10d 494 leds = 1; /// one status LED on
el14rd 10:67e13dfaa10d 495 led2=1; /// green LED on
el14rd 10:67e13dfaa10d 496 led1=0; /// red LED off
el14rd 8:b01f638d23b4 497
el14rd 8:b01f638d23b4 498 }
el14rd 8:b01f638d23b4 499 }
el14rd 8:b01f638d23b4 500 }
el14rd 1:f682aeb462f1 501 lcd.clear();
el14rd 5:d8a06e7c54fb 502 lifeFlag=0;
el14rd 1:f682aeb462f1 503 updateSnake();
el14rd 1:f682aeb462f1 504 drawSnake();
el14rd 2:d7b17623ba26 505 drawNut();
el14rd 1:f682aeb462f1 506 moveSnake();
el14rd 1:f682aeb462f1 507 startGmae();
el14rd 8:b01f638d23b4 508 lcd.refresh();
el14rd 8:b01f638d23b4 509 wait(0.08);
el14rd 10:67e13dfaa10d 510 if(lifeFlag==1) { ///snake die
el14rd 10:67e13dfaa10d 511 led1=1;
el14rd 10:67e13dfaa10d 512 led2=0;
el14rd 8:b01f638d23b4 513 lcd.clear();
el14rd 8:b01f638d23b4 514 lcd.refresh();
el14rd 8:b01f638d23b4 515 printScore();
el14rd 8:b01f638d23b4 516 for(int i=0; i<=11; i++) {
el14rd 10:67e13dfaa10d 517 buzzer.period(1/(frequency[i])); /// set PWM period
el14rd 10:67e13dfaa10d 518 buzzer=0.1; /// set duty cycle
el14rd 8:b01f638d23b4 519 wait(0.5*beat[i]);
el14rd 8:b01f638d23b4 520 }
el14rd 10:67e13dfaa10d 521 buzzer=0; ///close buzzer
el14rd 8:b01f638d23b4 522 }
el14rd 10:67e13dfaa10d 523
el14rd 10:67e13dfaa10d 524 ain = pot.read(); /// read value of potentiometer
el14rd 9:c8ea9b4af873 525 lcd.setBrightness(ain);
el14rd 10:67e13dfaa10d 526 lcd.refresh();
el14rd 8:b01f638d23b4 527 }
el14rd 1:f682aeb462f1 528 }
el14rd 1:f682aeb462f1 529