renhao dai / Mbed 2 deprecated Joystick_snake_game

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Dependencies:   N5110 mbed

main.cpp@3:04ff8cd27dd1, 2015-04-30 (annotated)

Committer:
el14rd
Date:
Thu Apr 30 20:34:29 2015 +0000
Revision:
3:04ff8cd27dd1
Parent:
2:d7b17623ba26
Child:
4:41acda9d68c7
snake move version 2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
eencae 0:026fa541af7a 1 #include "mbed.h"
el14rd 1:f682aeb462f1 2 #include "N5110.h"
eencae 0:026fa541af7a 3 #define DIRECTION_TOLERANCE 0.05
eencae 0:026fa541af7a 4
el14rd 1:f682aeb462f1 5
el14rd 1:f682aeb462f1 6 //pins in
el14rd 1:f682aeb462f1 7 N5110 lcd(p7,p8,p9,p10,p11,p13,p26);
el14rd 1:f682aeb462f1 8
eencae 0:026fa541af7a 9 // connections for joystick
el14rd 1:f682aeb462f1 10 DigitalIn button(p19);
el14rd 1:f682aeb462f1 11 AnalogIn xPot(p15);
el14rd 1:f682aeb462f1 12 AnalogIn yPot(p16);
el14rd 2:d7b17623ba26 13 //InterruptIn button(p19);
el14rd 1:f682aeb462f1 14 int i;
el14rd 1:f682aeb462f1 15 int j;
el14rd 2:d7b17623ba26 16 int X;
el14rd 2:d7b17623ba26 17 int Y;
el14rd 1:f682aeb462f1 18
el14rd 1:f682aeb462f1 19 int snakeX[100];
el14rd 1:f682aeb462f1 20 int snakeY[100];
eencae 0:026fa541af7a 21
eencae 0:026fa541af7a 22 // timer to regularly read the joystick
eencae 0:026fa541af7a 23 Ticker pollJoystick;
eencae 0:026fa541af7a 24 // Serial for debug
eencae 0:026fa541af7a 25 Serial serial(USBTX,USBRX);
eencae 0:026fa541af7a 26
eencae 0:026fa541af7a 27 // create enumerated type (0,1,2,3 etc. for direction)
eencae 0:026fa541af7a 28 // could be extended for diagonals etc.
eencae 0:026fa541af7a 29 enum DirectionName {
eencae 0:026fa541af7a 30 UP,
eencae 0:026fa541af7a 31 DOWN,
eencae 0:026fa541af7a 32 LEFT,
eencae 0:026fa541af7a 33 RIGHT,
eencae 0:026fa541af7a 34 CENTRE,
eencae 0:026fa541af7a 35 UNKNOWN
eencae 0:026fa541af7a 36 };
eencae 0:026fa541af7a 37
eencae 0:026fa541af7a 38 // struct for Joystick
eencae 0:026fa541af7a 39 typedef struct JoyStick Joystick;
eencae 0:026fa541af7a 40 struct JoyStick {
eencae 0:026fa541af7a 41 float x; // current x value
eencae 0:026fa541af7a 42 float x0; // 'centred' x value
eencae 0:026fa541af7a 43 float y; // current y value
eencae 0:026fa541af7a 44 float y0; // 'centred' y value
eencae 0:026fa541af7a 45 int button; // button state (assume pull-down used, so 1 = pressed, 0 = unpressed)
eencae 0:026fa541af7a 46 DirectionName direction; // current direction
eencae 0:026fa541af7a 47 };
eencae 0:026fa541af7a 48 // create struct variable
eencae 0:026fa541af7a 49 Joystick joystick;
eencae 0:026fa541af7a 50
eencae 0:026fa541af7a 51 int printFlag = 0;
el14rd 3:04ff8cd27dd1 52 int nutFlag =1;
el14rd 2:d7b17623ba26 53 //int buttonFlag = 0;
eencae 0:026fa541af7a 54 // function prototypes
el14rd 1:f682aeb462f1 55 //void setPixel(int x, int y);
el14rd 1:f682aeb462f1 56 //void clearPixel(int x, int y);
el14rd 1:f682aeb462f1 57
eencae 0:026fa541af7a 58
el14rd 1:f682aeb462f1 59 typedef struct Nut Nut;
el14rd 1:f682aeb462f1 60 struct Nut {
el14rd 1:f682aeb462f1 61 int X;
el14rd 1:f682aeb462f1 62 int Y;
el14rd 1:f682aeb462f1 63 int yes;
el14rd 1:f682aeb462f1 64 };
el14rd 1:f682aeb462f1 65 Nut nut;
eencae 0:026fa541af7a 66
el14rd 1:f682aeb462f1 67 typedef struct Snake Snake;
el14rd 1:f682aeb462f1 68 struct Snake {
el14rd 1:f682aeb462f1 69 int snakeX[100];
el14rd 1:f682aeb462f1 70 int snakeY[100];
el14rd 1:f682aeb462f1 71 int node;
el14rd 1:f682aeb462f1 72 int life;
el14rd 1:f682aeb462f1 73 DirectionName direction;
el14rd 1:f682aeb462f1 74 };
el14rd 1:f682aeb462f1 75 Snake snake;
eencae 0:026fa541af7a 76
el14rd 1:f682aeb462f1 77 DirectionName snakeDirection;
el14rd 1:f682aeb462f1 78
el14rd 2:d7b17623ba26 79 void initNut()
el14rd 2:d7b17623ba26 80 {
el14rd 3:04ff8cd27dd1 81 nut.X=rand()%84;
el14rd 3:04ff8cd27dd1 82 nut.Y=rand()%48;
el14rd 3:04ff8cd27dd1 83 //nutFlag=1;
el14rd 2:d7b17623ba26 84 }
el14rd 3:04ff8cd27dd1 85
el14rd 2:d7b17623ba26 86 void drawNut()
el14rd 2:d7b17623ba26 87 {
el14rd 3:04ff8cd27dd1 88 //int X = rand()%84;
el14rd 3:04ff8cd27dd1 89 //int Y = rand()%48;
el14rd 3:04ff8cd27dd1 90 if(nutFlag==1){
el14rd 3:04ff8cd27dd1 91 lcd.drawCircle(nut.X,nut.Y,2,1);
el14rd 3:04ff8cd27dd1 92 }
el14rd 2:d7b17623ba26 93 }
eencae 0:026fa541af7a 94
el14rd 1:f682aeb462f1 95 void moveSnake()
el14rd 1:f682aeb462f1 96 {
el14rd 3:04ff8cd27dd1 97
el14rd 3:04ff8cd27dd1 98 if(joystick.direction == UNKNOWN||joystick.direction == CENTRE){
el14rd 3:04ff8cd27dd1 99 snake.snakeX[0]+=1;
el14rd 3:04ff8cd27dd1 100 }
el14rd 2:d7b17623ba26 101
el14rd 3:04ff8cd27dd1 102 else if(joystick.direction != UNKNOWN&&joystick.direction != CENTRE) {
el14rd 2:d7b17623ba26 103
el14rd 3:04ff8cd27dd1 104 if(joystick.direction == DOWN&&snake.direction!=LEFT) {
el14rd 2:d7b17623ba26 105 snake.direction= RIGHT;
el14rd 2:d7b17623ba26 106 snake.snakeX[0]+=1;
el14rd 3:04ff8cd27dd1 107
el14rd 3:04ff8cd27dd1 108 } else if(joystick.direction == UP&&snake.direction!=RIGHT) {
el14rd 2:d7b17623ba26 109 snake.direction=LEFT;
el14rd 2:d7b17623ba26 110 snake.snakeX[0]-=1;
el14rd 3:04ff8cd27dd1 111 } else if(joystick.direction == LEFT&&snake.direction!=DOWN) {
el14rd 2:d7b17623ba26 112 snake.direction=DOWN;
el14rd 1:f682aeb462f1 113 snake.snakeY[0]-=1;
el14rd 3:04ff8cd27dd1 114 } else if(joystick.direction == RIGHT&&snake.direction!=UP) {
el14rd 2:d7b17623ba26 115 snake.direction=UP;
el14rd 1:f682aeb462f1 116 snake.snakeY[0]+=1;
eencae 0:026fa541af7a 117 }
eencae 0:026fa541af7a 118
eencae 0:026fa541af7a 119 }
el14rd 3:04ff8cd27dd1 120
el14rd 2:d7b17623ba26 121 }
el14rd 2:d7b17623ba26 122
el14rd 2:d7b17623ba26 123 void initSnake()
el14rd 2:d7b17623ba26 124 {
el14rd 2:d7b17623ba26 125
el14rd 2:d7b17623ba26 126 snake.snakeX[0] = 10; //coordinate of head
el14rd 2:d7b17623ba26 127 snake.snakeY[0] = 10;
el14rd 2:d7b17623ba26 128 snake.snakeX[1] = 12;
el14rd 2:d7b17623ba26 129 snake.snakeY[1] = 10;
el14rd 2:d7b17623ba26 130 snake.snakeX[2] = 14;
el14rd 2:d7b17623ba26 131 snake.snakeY[2] = 10;
el14rd 2:d7b17623ba26 132 snake.snakeX[3] = 16;
el14rd 2:d7b17623ba26 133 snake.snakeY[3] = 10;
el14rd 2:d7b17623ba26 134 snake.node = 4; //node of snake
el14rd 2:d7b17623ba26 135
eencae 0:026fa541af7a 136 }
eencae 0:026fa541af7a 137
el14rd 1:f682aeb462f1 138 void drawSnake()
el14rd 1:f682aeb462f1 139 {
el14rd 1:f682aeb462f1 140
el14rd 2:d7b17623ba26 141 for(i=0; i<snake.node; i++) {
el14rd 1:f682aeb462f1 142
el14rd 2:d7b17623ba26 143 lcd.drawRect(snake.snakeX[i],snake.snakeY[i],1,1,1);
el14rd 2:d7b17623ba26 144 //lcd.setPixel(snake.snakeX[i],snake.snakeY[i]);
el14rd 1:f682aeb462f1 145 }
el14rd 1:f682aeb462f1 146 }
el14rd 1:f682aeb462f1 147
el14rd 1:f682aeb462f1 148 /*
el14rd 1:f682aeb462f1 149 */
el14rd 1:f682aeb462f1 150
el14rd 1:f682aeb462f1 151 void startGmae()
el14rd 1:f682aeb462f1 152 {
el14rd 2:d7b17623ba26 153 //lcd.drawRect(snake.snakeX[0]+10,snake.snakeY[0]+10,10,10,1);
el14rd 3:04ff8cd27dd1 154 //nutFlag = 1;
el14rd 1:f682aeb462f1 155 snake.life = 0;
el14rd 2:d7b17623ba26 156 //snake.direction=LEFT;
el14rd 1:f682aeb462f1 157
el14rd 1:f682aeb462f1 158 //if(joystick.direction == UNKNOWN)
el14rd 1:f682aeb462f1 159 //{
el14rd 3:04ff8cd27dd1 160 if(snake.snakeX[0]==nut.X && snake.snakeY[0]==nut.Y) { // if snake got nut
el14rd 3:04ff8cd27dd1 161 snake.node++;
el14rd 3:04ff8cd27dd1 162 nutFlag=0; // new nut appear
el14rd 3:04ff8cd27dd1 163 }
el14rd 3:04ff8cd27dd1 164
el14rd 3:04ff8cd27dd1 165 if(nutFlag==0) { //set nut randomly
el14rd 1:f682aeb462f1 166 nut.X = rand()%83;
el14rd 1:f682aeb462f1 167 nut.Y = rand()%47;
el14rd 3:04ff8cd27dd1 168 nutFlag = 1;
el14rd 1:f682aeb462f1 169 }
el14rd 2:d7b17623ba26 170
el14rd 1:f682aeb462f1 171
el14rd 1:f682aeb462f1 172 for(i=3; i<snake.node; i++) { //if snake collide itself snake die
el14rd 1:f682aeb462f1 173 if(snake.snakeX[i]==snake.snakeX[0] && snake.snakeY[i]==snake.snakeY[0]) {
el14rd 1:f682aeb462f1 174 snake.life=1;
el14rd 1:f682aeb462f1 175 // break;
el14rd 1:f682aeb462f1 176 }
el14rd 1:f682aeb462f1 177 }
el14rd 1:f682aeb462f1 178
el14rd 1:f682aeb462f1 179 for(i=snake.node-1; i>0; i--) { //move snake
el14rd 1:f682aeb462f1 180 snake.snakeX[i]=snake.snakeX[i-1];
el14rd 1:f682aeb462f1 181 snake.snakeY[i]=snake.snakeY[i-1];
el14rd 1:f682aeb462f1 182 }
el14rd 1:f682aeb462f1 183
el14rd 1:f682aeb462f1 184 if(snake.snakeX[0]<1||snake.snakeX[0]>83||snake.snakeY[0]<1||snake.snakeY[0]>47) {
el14rd 1:f682aeb462f1 185 snake.life=1; // snake collide the corrider snake die
el14rd 1:f682aeb462f1 186 //break;
el14rd 1:f682aeb462f1 187 }
el14rd 1:f682aeb462f1 188
el14rd 1:f682aeb462f1 189
el14rd 1:f682aeb462f1 190 if(snake.life==1) {
el14rd 1:f682aeb462f1 191 //break;
el14rd 1:f682aeb462f1 192 }
el14rd 3:04ff8cd27dd1 193
el14rd 1:f682aeb462f1 194 //}
el14rd 1:f682aeb462f1 195
el14rd 1:f682aeb462f1 196 }
el14rd 1:f682aeb462f1 197
el14rd 1:f682aeb462f1 198
el14rd 1:f682aeb462f1 199 //while(joystick.direction == UNKNOWN) {
el14rd 1:f682aeb462f1 200
el14rd 1:f682aeb462f1 201
el14rd 1:f682aeb462f1 202 //switch(snake.direction)
el14rd 1:f682aeb462f1 203 //{
el14rd 1:f682aeb462f1 204 // case RIGHT:snake.X[0]+=1;
el14rd 1:f682aeb462f1 205 // break;    
el14rd 1:f682aeb462f1 206 // case LEFT:snake.X[0]-=1;
el14rd 1:f682aeb462f1 207 // break;     
el14rd 1:f682aeb462f1 208 // case UP:snake.Y[0]-=1;
el14rd 1:f682aeb462f1 209 // break;
el14rd 1:f682aeb462f1 210 // case DOWN:snake.Y[0]+=1;
el14rd 1:f682aeb462f1 211 // break;
el14rd 1:f682aeb462f1 212 // }
el14rd 1:f682aeb462f1 213
el14rd 1:f682aeb462f1 214 //end of while(joystick.direction = UNKNOWN)
el14rd 1:f682aeb462f1 215
el14rd 1:f682aeb462f1 216
el14rd 1:f682aeb462f1 217 // if(joystick.direction == UP&&snake.direction!=DOWN) {
el14rd 1:f682aeb462f1 218 // snake.direction=UP;
el14rd 1:f682aeb462f1 219 // } else if(joystick.direction == RIGHT&&snake.direction!=LEFT) {
el14rd 1:f682aeb462f1 220 // snake.direction= RIGHT;
el14rd 1:f682aeb462f1 221 // } else if(joystick.direction == LEFT&&snake.direction!=RIGHT) {
el14rd 1:f682aeb462f1 222 // snake.direction=LEFT;
el14rd 1:f682aeb462f1 223 // } else(joystick.direction == DOWN&&snake.direction!=UP) {
el14rd 1:f682aeb462f1 224 // snake.direction=DOWN;
el14rd 1:f682aeb462f1 225 // }
el14rd 1:f682aeb462f1 226
el14rd 1:f682aeb462f1 227
el14rd 1:f682aeb462f1 228
eencae 0:026fa541af7a 229 // read default positions of the joystick to calibrate later readings
eencae 0:026fa541af7a 230 void calibrateJoystick()
eencae 0:026fa541af7a 231 {
eencae 0:026fa541af7a 232 button.mode(PullDown);
eencae 0:026fa541af7a 233 // must not move during calibration
eencae 0:026fa541af7a 234 joystick.x0 = xPot; // initial positions in the range 0.0 to 1.0 (0.5 if centred exactly)
eencae 0:026fa541af7a 235 joystick.y0 = yPot;
eencae 0:026fa541af7a 236 }
el14rd 1:f682aeb462f1 237
el14rd 2:d7b17623ba26 238
eencae 0:026fa541af7a 239 void updateJoystick()
eencae 0:026fa541af7a 240 {
eencae 0:026fa541af7a 241 // read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred)
eencae 0:026fa541af7a 242 joystick.x = xPot - joystick.x0;
eencae 0:026fa541af7a 243 joystick.y = yPot - joystick.y0;
eencae 0:026fa541af7a 244 // read button state
eencae 0:026fa541af7a 245 joystick.button = button;
eencae 0:026fa541af7a 246
eencae 0:026fa541af7a 247 // calculate direction depending on x,y values
eencae 0:026fa541af7a 248 // tolerance allows a little lee-way in case joystick not exactly in the stated direction
eencae 0:026fa541af7a 249 if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
eencae 0:026fa541af7a 250 joystick.direction = CENTRE;
eencae 0:026fa541af7a 251 } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
eencae 0:026fa541af7a 252 joystick.direction = UP;
el14rd 1:f682aeb462f1 253 //snake.direction = UP;
eencae 0:026fa541af7a 254 } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
eencae 0:026fa541af7a 255 joystick.direction = DOWN;
eencae 0:026fa541af7a 256 } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
eencae 0:026fa541af7a 257 joystick.direction = RIGHT;
eencae 0:026fa541af7a 258 } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
eencae 0:026fa541af7a 259 joystick.direction = LEFT;
eencae 0:026fa541af7a 260 } else {
eencae 0:026fa541af7a 261 joystick.direction = UNKNOWN;
eencae 0:026fa541af7a 262 }
eencae 0:026fa541af7a 263 // set flag for printing
eencae 0:026fa541af7a 264 printFlag = 1;
el14rd 1:f682aeb462f1 265 }
el14rd 1:f682aeb462f1 266
el14rd 1:f682aeb462f1 267 void updateSnake()
el14rd 1:f682aeb462f1 268 {
el14rd 1:f682aeb462f1 269 // get direction of joystick and update snake
el14rd 1:f682aeb462f1 270 if (joystick.direction == UP) {
el14rd 2:d7b17623ba26 271 snake.snakeX[0]--;
el14rd 1:f682aeb462f1 272 if(snake.snakeY[0]<1) {
el14rd 1:f682aeb462f1 273 snake.snakeY[0]=1;
el14rd 1:f682aeb462f1 274 }//will stop at the top edge
el14rd 1:f682aeb462f1 275
el14rd 1:f682aeb462f1 276 }
el14rd 1:f682aeb462f1 277 if (joystick.direction == DOWN) {
el14rd 2:d7b17623ba26 278 snake.snakeX[0]++;
el14rd 1:f682aeb462f1 279 if(snake.snakeY[0]>43) {
el14rd 1:f682aeb462f1 280 snake.snakeY[0]=43;
el14rd 1:f682aeb462f1 281 }//will stop at the bottom edge
el14rd 1:f682aeb462f1 282 }
el14rd 1:f682aeb462f1 283 if (joystick.direction == LEFT) {
el14rd 2:d7b17623ba26 284 snake.snakeY[0]--;
el14rd 1:f682aeb462f1 285 if(snake.snakeX[0]<1) {
el14rd 1:f682aeb462f1 286 snake.snakeX[0]=1;
el14rd 1:f682aeb462f1 287 }//will stop at the left edge
el14rd 1:f682aeb462f1 288
el14rd 1:f682aeb462f1 289 }
el14rd 1:f682aeb462f1 290 if (joystick.direction == RIGHT) {
el14rd 2:d7b17623ba26 291 snake.snakeY[0]++;
el14rd 1:f682aeb462f1 292 if(snake.snakeX[0]>87) {
el14rd 1:f682aeb462f1 293 snake.snakeX[0]=87;
el14rd 1:f682aeb462f1 294 }//will stop at the right edge
el14rd 1:f682aeb462f1 295
el14rd 1:f682aeb462f1 296 }
el14rd 1:f682aeb462f1 297
el14rd 1:f682aeb462f1 298 }
el14rd 1:f682aeb462f1 299
el14rd 1:f682aeb462f1 300
el14rd 2:d7b17623ba26 301
el14rd 1:f682aeb462f1 302 //main code
el14rd 1:f682aeb462f1 303 int main()
el14rd 1:f682aeb462f1 304 {
el14rd 1:f682aeb462f1 305 lcd.init();
el14rd 1:f682aeb462f1 306 lcd.setBrightness(0.5); // put LED backlight on 50%
el14rd 1:f682aeb462f1 307 lcd.printString("press to start",0,0);
el14rd 1:f682aeb462f1 308 calibrateJoystick(); // get centred values of joystick
el14rd 1:f682aeb462f1 309 pollJoystick.attach(&updateJoystick,1.0/10.0); // read joystick 10 times per second
el14rd 1:f682aeb462f1 310 lcd.refresh();
el14rd 2:d7b17623ba26 311 initNut();
el14rd 2:d7b17623ba26 312 initSnake();
el14rd 1:f682aeb462f1 313
el14rd 1:f682aeb462f1 314 //infinite while loop
el14rd 1:f682aeb462f1 315 while(1) {
el14rd 1:f682aeb462f1 316 lcd.clear();
el14rd 1:f682aeb462f1 317 updateSnake();
el14rd 1:f682aeb462f1 318 drawSnake();
el14rd 2:d7b17623ba26 319 drawNut();
el14rd 1:f682aeb462f1 320 moveSnake();
el14rd 1:f682aeb462f1 321 startGmae();
el14rd 1:f682aeb462f1 322 lcd.refresh();
el14rd 3:04ff8cd27dd1 323
el14rd 3:04ff8cd27dd1 324 wait(0.1);
el14rd 2:d7b17623ba26 325
el14rd 1:f682aeb462f1 326 }
el14rd 2:d7b17623ba26 327 //wait(0.5);
el14rd 2:d7b17623ba26 328 //if(snake.life==1) {
el14rd 2:d7b17623ba26 329 // lcd.printString("lost",24,42);
el14rd 2:d7b17623ba26 330 // break;
el14rd 2:d7b17623ba26 331
el14rd 1:f682aeb462f1 332
el14rd 1:f682aeb462f1 333 }
el14rd 1:f682aeb462f1 334