ELEC2645 (2015/16)
My ELEC2645 project. Nikollao Sulollari. 200804685
Dependencies: N5110 SoftPWM mbed
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Treasure_Hunt
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ELEC2645 (2015/16)
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main.cpp
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00001 /** 00002 @file main.cpp 00003 @brief Game implementation 00004 00005 */ 00006 #include "main.h" 00007 #include "stdlib.h" 00008 00009 int main(void) 00010 { 00011 lcd.init(); ///initialise LED 00012 init_K64F(); ///init K64F 00013 init_serial(); ///initiate connection with PC port 00014 init_game(); ///initialize game 00015 led_output = fsm [fsm_state ]; ///set FSM to turn on LEDs 00016 calibrateJoystick(); ///calibrate joystick 00017 00018 game_ticker.attach(&game_timer_isr,0.2); ///attach ticker for the menu different from the main ticker 00019 menu(); 00020 game_ticker.detach(); 00021 //timer.start(); 00022 00023 ticker.attach(&timer_isr,game_speed ); ///attach ticker with ISR. Speed is selected by the user 00024 reset = level ; ///set reset = level to check later if level has increased 00025 g_button1_flag = 0; 00026 timer.start(); 00027 while (1) { 00028 00029 if (g_timer_flag ) {///if timer flag is UP 00030 00031 g_timer_flag = 0; ///reset flag 00032 lcd.clear(); 00033 if (reset < level ) { ///if level has increased 00034 g_button1_flag = 0; ///reset weapon button 00035 reset = level ; ///update reset 00036 rectY = 0; ///set enemies to default position 00037 circleX = 0; 00038 } 00039 guidance(); ///get guidance 00040 hero(); ///call hero 00041 enemies(); ///generate enemies 00042 obstacles(); ///generate obstacles 00043 //float count_time = timer.read(); 00044 00045 if (g_button1_flag ) { ///the blue LED indicates if the weapon is ready to use or not 00046 blue_led = 0; 00047 } else { 00048 blue_led = 1; 00049 } 00050 00051 checkOverlap(); ///check is hero has overlapped with enemies or obstacles 00052 updateJoystick(); ///update joystick 00053 lcd.refresh(); 00054 } 00055 sleep();///use sleep and timer triggered interrupt to save power 00056 } 00057 } 00058 00059 00060 //mbed functions 00061 00062 00063 void init_serial() 00064 { 00065 // set to highest baud - ensure terminal software matches 00066 pc.baud(115200); 00067 } 00068 00069 void init_K64F() 00070 { 00071 // on-board LEDs are active-low, so set pin high to turn them off. 00072 r_led = 1; 00073 g_led = 1; 00074 b_led = 1; 00075 00076 blue_led = 1; 00077 00078 // since the on-board switches have external pull-ups, we should disable the internal pull-down 00079 // resistors that are enabled by default using InterruptIn 00080 sw2.mode(PullNone); 00081 sw3.mode(PullNone); 00082 00083 button.rise(&button_isr); ///assign rise with ISR 00084 button1.rise(&button1_isr); 00085 button.mode(PullDown); ///use PullDown mode 00086 button1.mode(PullDown); 00087 } 00088 00089 00090 ///ISR functions 00091 void timer_isr () 00092 { 00093 g_timer_flag = 1; 00094 } 00095 00096 void game_timer_isr() 00097 { 00098 g_game_timer_flag = 1; 00099 } 00100 00101 void sw2_isr() 00102 { 00103 g_sw2_flag = 1; 00104 } 00105 00106 void sw3_isr() 00107 { 00108 g_sw3_flag = 1; 00109 } 00110 00111 void button_isr() 00112 { 00113 g_button_flag =1; 00114 } 00115 00116 void button1_isr() 00117 { 00118 00119 g_button1_flag =1; 00120 } 00121 00122 void timeout_isr() 00123 { 00124 if (button) { 00125 pc.printf("timeout \n"); 00126 } 00127 } 00128 00129 ///game functions 00130 00131 void enemies() 00132 { 00133 /// generate enemies in the screen depending on the level of difficulty 00134 if (level == 0) { ///generate enemies at level 0 00135 00136 enemyRect(); 00137 if (g_button1_flag == 0) { 00138 enemyCircle(); 00139 } 00140 } else if (level == 1) {///generate enemies at level 1 00141 00142 enemyRect(); 00143 if (g_button1_flag == 0) { 00144 enemyCircle(); 00145 } 00146 } else if (level == 2) {///generate enemies at level 2 00147 00148 enemyRocket(); 00149 if (g_button1_flag == 0) { 00150 enemyCircle(); 00151 } 00152 } else if (level == 3) {///generate enemies at level 3 00153 00154 enemyRect(); 00155 if (g_button1_flag == 0) { 00156 enemyCircle(); 00157 } 00158 } else if (level == 4) {///generate enemies at level 4 00159 00160 enemyRect(); 00161 if (g_button1_flag == 0) { 00162 enemyCircle(); 00163 } 00164 } else if (level == 5) {///generate enemies at level 5 00165 enemyRocket(); 00166 if (g_button1_flag == 0) { 00167 enemyCircle(); 00168 } 00169 } else if (level == 6) {///generate enemies at level 6 00170 enemyRocket(); 00171 if (g_button1_flag == 0) { 00172 enemyCircle(); 00173 } 00174 } else if (level == 7) {///generate enemies at level 7 00175 enemyRocket(); 00176 enemyCircle(); 00177 if (g_button1_flag == 1) {///if button1 is pressed don't allow to use at level 7 00178 g_button1_flag = 0; 00179 lcd.clear(); 00180 lcd.printString("Can't use now!",0,0); 00181 lcd.refresh(); 00182 wait(1); 00183 lcd.clear(); 00184 } 00185 } 00186 00187 } 00188 00189 void enemyRect() 00190 { 00191 ///generate rectangular shape enemy 00192 lcd.drawRect(rectX ,rectY ,5,4,1); 00193 00194 rectX = rectX + rand()%4 - 2; 00195 rectY ++; ///enemy moving towards hero 00196 00197 if (rectY > 50) {///set boundaries for enemy position 00198 rectY = 0; 00199 } 00200 if (rectX > 75 || rectX < 25) { 00201 rectX = 40+rand()%6 - 3; 00202 } 00203 } 00204 00205 void enemyRocket() { ///generate a "rocket-like" enemy 00206 00207 lcd.drawRect(rectX ,rectY ,2,7,1); 00208 lcd.drawCircle(rectX +1,rectY +1,2,1); 00209 lcd.drawLine(rectX -2,rectY +2,rectX ,rectY -1,1); 00210 lcd.drawLine(rectX +2,rectY +2,rectX ,rectY -1,1); 00211 00212 rectX = rectX + rand()%4 - 2; 00213 rectY ++; ///enemy moving towards hero 00214 00215 if (rectY > 50) {///set boundaries for position of enemy 00216 rectY = 0; 00217 } 00218 if (rectX > 75 || rectX < 10) { 00219 rectX = 40+rand()%6 - 3; 00220 } 00221 } 00222 00223 void enemyCircle() 00224 { 00225 ///generate circle shape enemy 00226 lcd.drawCircle(circleX ,circleY ,4,1); 00227 circleY = circleY + rand() %4 - 2; 00228 00229 if (circleY <= 10) { ///set the boundaries of the enemy 00230 circleY = 20; 00231 } 00232 if (circleY >= 35) { 00233 circleY = 35; 00234 } 00235 if (circleX > 84) { 00236 circleX = 0; 00237 } 00238 circleX ++; ///enemy moving towards hero 00239 } 00240 void hero() 00241 { 00242 ///cotrol hero 00243 if (joystick.direction == RIGHT) { ///joystick direction points to the right 00244 heroX --; 00245 } else if (joystick.direction == LEFT) {///joystick direction points to the left 00246 heroX ++; 00247 } else { 00248 heroX = heroX ; 00249 } 00250 00251 if (joystick.direction == UP) {///joystick direction points to the top 00252 heroY --; 00253 } else if (joystick.direction == DOWN) {///joystick direction points down 00254 heroY ++; 00255 } else { 00256 heroY = heroY ; ///joystick is centred 00257 } 00258 00259 if (joystick.direction == UP_LEFT) { ///joystick direction points up and left 00260 heroY --; 00261 heroX ++; 00262 } else if (joystick.direction == UP_RIGHT) { ///joystick direction points up and right 00263 heroY --; 00264 heroX --; 00265 } else if (joystick.direction == DOWN_RIGHT) {///joystick direction points down and right 00266 heroY ++; 00267 heroX --; 00268 } else if (joystick.direction == DOWN_LEFT) {///joystick direction points down and left 00269 heroY ++; 00270 heroX ++; 00271 } 00272 00273 ///set x-axis boundaries so hero does not go out of screen 00274 if (heroX > 40) { 00275 heroX = -40; 00276 } 00277 if (heroX < -45) { 00278 heroX = 35; 00279 } 00280 if (heroY < -45) { ///if hero has reached the top of the screen 00281 heroY = 0; ///hero goes back to the bottom of the screen 00282 g_button1_flag = 0; 00283 level ++; ///increase level of the game 00284 } 00285 00286 if (heroY >= 0) {/// hero cannot go to previous level 00287 heroY = 0; 00288 } 00289 ///draw hero 00290 lcd.drawLine(40+heroX , 47+heroY , 48+heroX , 43+heroY ,1); ///variables heroX and heroY are used to control the direction of the hero 00291 lcd.drawLine(40+heroX , 43+heroY ,48+heroX , 47+heroY ,1); 00292 lcd.drawLine(44+heroX , 45+heroY ,44+heroX , 41+heroY ,1); 00293 lcd.drawCircle(44+heroX , 39+heroY ,2,0); 00294 } 00295 00296 void init_game() 00297 { 00298 ///initialise game 00299 srand(time(NULL)); /// generate random numbers 00300 rectY = 0; /// init rectX, rectY 00301 rectX = rand() %40 + 20; 00302 circleY = rand() %20 + 10; /// init circleX, circleY 00303 circleX = 0; 00304 00305 lcd.setBrightness(0.5); // put LED backlight on 50% 00306 lcd.printString("Welcome to",11,1); 00307 lcd.printString("Treasure Hunt!",1,3); 00308 lcd.refresh(); 00309 //timeout.attach(&timeout_isr,3); 00310 // sleep(); 00311 wait(3); ///small delay prints welcome message 00312 lcd.clear(); 00313 00314 } 00315 void guidance() 00316 { 00317 if (level < 7) { 00318 lcd.drawLine(42,0,40,2,1); 00319 lcd.drawLine(42,0,44,2,1); 00320 lcd.drawLine(42,0,42,3,1); 00321 } 00322 /// function acts as guidance towards the treasure 00323 else if (level == 7) { 00324 00325 lcd.printString("F",42,0); /// print the treasure icon 00326 } else if (level == 8) { 00327 00328 timer.stop(); ///stop timer 00329 timer.reset(); 00330 float win_time = timer.read();///value reads the time taken to win the game 00331 char win[80]; ///create an array of chars 00332 sprintf(win,"Time:%.2f sec",win_time); ///create string 00333 ticker.detach(); 00334 game_ticker.attach(&game_timer_isr,0.2); 00335 lcd.clear(); 00336 lcd.printString("Well done!",0,0); 00337 lcd.refresh(); 00338 wait(2); 00339 lcd.clear(); 00340 lcd.printString(win,0,0); ///print the time taken to win the game on screen 00341 wait(3); 00342 lcd.clear(); 00343 lcd.printString("Play again!",0,0); ///provide play again option 00344 lcd.drawCircle(70,4,2,1); 00345 lcd.refresh(); 00346 g_button_flag = 0; 00347 00348 while(1) { 00349 if (g_button1_flag ) { ///if button1 is pressed 00350 ///reset 00351 g_button1_flag = 0; 00352 level = 0; 00353 lcd.clear(); 00354 main(); 00355 r_led = 0; 00356 lcd.refresh(); 00357 } 00358 sleep(); 00359 } 00360 } 00361 } 00362 00363 void obstacles() 00364 { 00365 /// place obstacles in the screen 00366 /// as level difficulty increases, more obstacles are added 00367 00368 if (level == 0) { ///obstacles are located in the ground and they change from one level to another 00369 00370 lcd.drawRect(10,15,2,2,1); 00371 lcd.drawRect(74,15,2,2,1); 00372 } else if (level == 1) { 00373 00374 lcd.drawRect(10,15,2,2,1); 00375 lcd.drawRect(74,15,2,2,1); 00376 lcd.drawRect(10,28,2,2,1); 00377 lcd.drawRect(74,28,2,2,1); 00378 } else if (level == 2) { 00379 00380 lcd.drawCircle(25,25,5,0); 00381 lcd.drawCircle(65,25,5,0); 00382 lcd.drawCircle(45,11,3,1); 00383 lcd.drawCircle(25,25,3,1); 00384 lcd.drawCircle(65,25,3,1); 00385 lcd.drawRect(80,2,2,42,1); 00386 lcd.drawRect(2,2,2,42,1); 00387 00388 } else if (level == 3) { 00389 00390 lcd.drawRect(5,12,2,2,1); 00391 lcd.drawRect(79,12,2,2,1); 00392 lcd.drawRect(5,30,2,2,1); 00393 lcd.drawRect(79,30,2,2,1); 00394 lcd.drawRect(28,12,2,2,1); 00395 lcd.drawRect(52,12,2,2,1); 00396 lcd.drawRect(28,30,2,2,1); 00397 lcd.drawRect(52,30,2,2,1); 00398 } else if (level == 4) { 00399 00400 lcd.drawRect(5+rand() %4 - 2 ,12+rand() %4 - 2,2,2,1); ///make obstacles moveable by adding a small random variance in position 00401 lcd.drawRect(79 + rand() %4 - 2,12 + rand() %4 - 2,2,2,1); 00402 lcd.drawRect(5+ rand() %4 - 2,30+rand() %4 - 2 ,2,2,1); 00403 lcd.drawRect(79 + rand() %4 - 2,30+rand() %4 - 2,2,2,1); 00404 lcd.drawRect(28 + rand() %4 - 2,12+ rand() %4,2,2,1); 00405 lcd.drawRect(52+rand() %4 - 2,12 + rand() %4 - 2,2,2,1); 00406 lcd.drawRect(28+rand() %4 - 2,30 + rand() %4 - 2,2,2,1); 00407 lcd.drawRect(52 + rand() %4 - 2,30+ rand() %4,2,2,1); 00408 } 00409 if (objectX == 0) { ///check position of obstacle 00410 state = 0; ///assign states to the position of the obstacle 00411 } else if (objectX == 60) { 00412 state = 1; 00413 } else { 00414 state = state ; 00415 } 00416 if (state == 0) { ///if state is 0 increase position on x-axis 00417 objectX ++; 00418 } else { 00419 objectX --; ///else if state is 1 decrease position on x-axis 00420 } 00421 00422 if (objectX1 == 68) { 00423 00424 state1 = 1; 00425 } else if (objectX1 == 10) { 00426 state1 = 0; 00427 } 00428 if (state1 == 1) { 00429 objectX1 --; 00430 } else if (state1 == 0) { 00431 objectX1 ++; 00432 } 00433 objectY = objectY + rand() %4 - 2; ///set poistion of obstacle on y-axis to be valuable 00434 ///keep moving object within boundaries 00435 if (objectY <= 10) { 00436 objectY = 10; 00437 } 00438 if (objectY >= 37) { 00439 objectY = 37; 00440 } 00441 if ( level == 5) { 00442 00443 lcd.drawLine(15,10,15,37,1); 00444 lcd.drawLine(71,10,71,37,1); 00445 00446 lcd.drawRect(11+objectX ,objectY ,2,2,1); ///draw obstacle 00447 00448 lcd.drawRect(80,10,2,2,1); 00449 lcd.drawRect(5,10,2,2,1); 00450 lcd.drawRect(80,20,2,2,1); 00451 lcd.drawRect(5,20,2,2,1); 00452 lcd.drawRect(80,30,2,2,1); 00453 lcd.drawRect(5,30,2,2,1); 00454 00455 } else if (level == 6) { 00456 00457 lcd.drawLine(15,10,15,37,1); ///draw boundaries 00458 lcd.drawLine(71,10,71,37,1); 00459 00460 lcd.drawRect(11+objectX ,objectY ,2,2,1); /// draw moving obstacles on screen 00461 lcd.drawRect(objectX1 ,10+objectY ,2,2,1); 00462 lcd.drawRect(80,10,2,2,1); ///draw stable obstacles 00463 lcd.drawRect(5,10,2,2,1); 00464 lcd.drawRect(80,20,2,2,1); 00465 lcd.drawRect(5,20,2,2,1); 00466 lcd.drawRect(80,30,2,2,1); 00467 lcd.drawRect(5,30,2,2,1); 00468 } else if (level == 7) { 00469 lcd.printString("??",65,0); 00470 00471 lcd.drawRect(1,23,82,2,1); 00472 if (button && heroX <-30) { 00473 g_button_flag = 0; 00474 heroX = -30; 00475 heroY = -30; 00476 } 00477 00478 pc.printf("x = %d , y = %d \n",heroX ,heroY ); 00479 } 00480 } 00481 00482 00483 void calibrateJoystick() 00484 { 00485 // must not move during calibration 00486 joystick.x0 = xPot; // initial positions in the range 0.0 to 1.0 (0.5 if centred exactly) 00487 joystick.y0 = yPot; 00488 } 00489 void updateJoystick() 00490 { 00491 // read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred) 00492 joystick.x = xPot - joystick.x0; 00493 joystick.y = yPot - joystick.y0; 00494 // read button state 00495 joystick.button = button; 00496 00497 // calculate direction depending on x,y values 00498 // tolerance allows a little lee-way in case joystick not exactly in the stated direction 00499 if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) { 00500 joystick.direction = CENTRE; 00501 } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) { 00502 joystick.direction = UP; 00503 } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) { 00504 joystick.direction = DOWN; 00505 } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) { 00506 joystick.direction = RIGHT; 00507 } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) { 00508 joystick.direction = LEFT; 00509 } else if (joystick.y > DIRECTION_TOLERANCE && joystick.x < DIRECTION_TOLERANCE) { 00510 joystick.direction = UP_LEFT; 00511 } else if (joystick.y > DIRECTION_TOLERANCE && joystick.x > DIRECTION_TOLERANCE) { 00512 joystick.direction = UP_RIGHT; 00513 } else if (joystick.y < DIRECTION_TOLERANCE && joystick.x < DIRECTION_TOLERANCE) { 00514 joystick.direction = DOWN_LEFT; 00515 } else if (joystick.y < DIRECTION_TOLERANCE && joystick.x > DIRECTION_TOLERANCE) { 00516 joystick.direction = DOWN_RIGHT; 00517 } 00518 } 00519 00520 void menu() 00521 { 00522 while(1) { 00523 if (g_game_timer_flag ) { 00524 g_game_timer_flag = 0; 00525 00526 updateJoystick(); 00527 lcd.clear(); 00528 00529 lcd.printString("Start Game",0,0); ///print the main 00530 lcd.printString("Settings",0,2); 00531 lcd.printString("Exit",0,4); 00532 //lcd.drawCircle(70,4,2,1); 00533 lcd.refresh(); 00534 switch (joystick.direction) { ///check the direction of joystick 00535 case UP: 00536 option --; 00537 break; 00538 case DOWN: 00539 option ++; 00540 break; 00541 } 00542 if (option < 0) { /// if the last (down) option is set for selection and user presses joystick down, selector moves at the top 00543 option = 2; 00544 } 00545 if (option > 2) { /// if the first (up) option is set for selection and user presses joystick up, selector moves at the bottom 00546 option = 0; 00547 } 00548 00549 if (option == 0) { ///selection in menu depends on the value of int option 00550 lcd.drawCircle(70,4,2,1); 00551 } else if (option == 1) { 00552 lcd.drawCircle(55,20,2,1); 00553 } else if (option == 2) { 00554 lcd.drawCircle(35,35,2,1); 00555 } 00556 00557 if(g_button_flag ) { /// if button is pressed 00558 00559 g_button_flag = 0; ///reset flag 00560 00561 if (option == 0) { ///break the while loop, start game 00562 break; 00563 } 00564 00565 else if (option == 1) { ///enter settings menu 00566 00567 option = 0; 00568 00569 while(1) { 00570 if (g_game_timer_flag ) { 00571 g_game_timer_flag = 0; 00572 00573 updateJoystick(); ///update joystick position 00574 lcd.clear(); 00575 if (normal ) { 00576 if (sound ) { 00577 lcd.printString("Game speed",0,0); ///print settings menu 00578 lcd.printString("Lcd:Inverse",0,1); 00579 lcd.printString("Sound:ON",0,2); 00580 lcd.printString("Back",0,4); 00581 } else { 00582 lcd.printString("Game speed",0,0); ///print settings menu 00583 lcd.printString("Lcd:Inverse",0,1); 00584 lcd.printString("Sound:OFF",0,2); 00585 lcd.printString("Back",0,4); 00586 } 00587 } else { 00588 if (sound ) { 00589 lcd.printString("Game speed",0,0); ///print settings menu 00590 lcd.printString("Lcd:Normal",0,1); 00591 lcd.printString("Sound:ON",0,2); 00592 lcd.printString("Back",0,4); 00593 } else { 00594 lcd.printString("Game speed",0,0); ///print settings menu 00595 lcd.printString("Lcd:Normal",0,1); 00596 lcd.printString("Sound:OFF",0,2); 00597 lcd.printString("Back",0,4); 00598 } 00599 } 00600 switch (joystick.direction) { 00601 case UP: 00602 option --; 00603 break; 00604 case DOWN: 00605 option ++; 00606 break; 00607 case CENTRE: 00608 option = option ; 00609 break; 00610 } 00611 if (option < 0) { ///if selector is on the top of the screen and UP is pressed, selector goes to the bottom 00612 option = 3; 00613 } 00614 if (option > 3) { ///if selector is on the bottom of the screen and DOWN is pressed, selector goes to the top 00615 option = 0; 00616 } 00617 00618 /// menu selection depends on the position of the Joystick 00619 if (option == 0) { 00620 lcd.drawCircle(70,4,2,1); 00621 } else if (option == 1) { 00622 lcd.drawCircle(70,12,2,1); 00623 } else if (option == 2) { 00624 lcd.drawCircle(70,20,2,1); 00625 } else { 00626 lcd.drawCircle(35,36,2,1); 00627 } 00628 if (g_button_flag ) { ///if button is pressed 00629 g_button_flag = 0; ///reset button 00630 00631 if (option == 0) { /// if user selects to modify speed of the game 00632 00633 while(1) { ///set speed of the game 00634 00635 if (g_game_timer_flag ) { 00636 g_game_timer_flag = 0; 00637 updateJoystick(); 00638 lcd.clear(); 00639 if (speed == 0) { 00640 lcd.printString("Slow<",0,0); ///print game speed menu 00641 lcd.printString("Normal",0,1); 00642 lcd.printString("Fast",0,2); 00643 lcd.printString("Back",0,4); 00644 } else if (speed == 1) { 00645 lcd.printString("Slow",0,0); //print game speed menu 00646 lcd.printString("Normal<",0,1); 00647 lcd.printString("Fast",0,2); 00648 lcd.printString("Back",0,4); 00649 } else if (speed == 2) { 00650 lcd.printString("Slow",0,0); //print game speed menu 00651 lcd.printString("Normal",0,1); 00652 lcd.printString("Fast<",0,2); 00653 lcd.printString("Back",0,4); 00654 } 00655 00656 switch (joystick.direction) { 00657 case UP: 00658 option --; 00659 break; 00660 case DOWN: 00661 option ++; 00662 break; 00663 case CENTRE: 00664 option = option ; 00665 break; 00666 } 00667 if (option < 0) { 00668 option = 3; 00669 } 00670 if (option > 3) { 00671 option = 0; 00672 } 00673 00674 if (option == 0) { 00675 lcd.drawCircle(70,4,2,1); 00676 } else if (option == 1) { 00677 lcd.drawCircle(55,12,2,1); 00678 } else if (option == 2) { 00679 lcd.drawCircle(35,20,2,1); 00680 } else { 00681 lcd.drawCircle(35,36,2,1); 00682 } 00683 00684 if (g_button_flag ) { 00685 g_button_flag = 0; 00686 00687 if (option == 0) { 00688 game_speed = 0.1; ///slow 00689 speed = 0; 00690 } else if (option == 1) { 00691 game_speed = 0.05; ///normal 00692 speed = 1; 00693 } else if (option == 2) { 00694 game_speed = 0.04; ///fast 00695 speed = 2; 00696 } else if (option == 3) { 00697 break; 00698 } 00699 } 00700 lcd.refresh(); 00701 } 00702 sleep(); 00703 } 00704 } else if (option == 1) { /// Lcd inverse mode 00705 normal =! normal ; 00706 if (normal ) { 00707 lcd.inverseMode(); 00708 } else { 00709 lcd.normalMode(); 00710 } 00711 } else if (option == 2) { ///select sound or not 00712 00713 sound =! sound ; 00714 00715 if (sound ) { 00716 //buzzer.write(0.5); 00717 // buzzer.period(1/4000); 00718 } 00719 else { 00720 buzzer.write(0.0); 00721 } 00722 // buzzer.period(1/400); 00723 } else if(option == 3) { ///go back to main menu 00724 break; 00725 } 00726 } 00727 lcd.refresh(); 00728 } 00729 sleep(); 00730 } 00731 } else if (option == 2) { ///turn off LED 00732 lcd.clear(); 00733 lcd.turnOff(); 00734 while(1) { 00735 deepsleep(); 00736 } 00737 } 00738 } 00739 lcd.refresh(); 00740 } 00741 sleep(); 00742 } 00743 } 00744 00745 int intersection(int i, int j) 00746 { 00747 /// check for overlap between enemies and hero 00748 n =0; 00749 00750 if (lcd.getPixel(i-1,j-1)!=0) //pixel to the top-left 00751 n ++; // increase n by 1 00752 if (lcd.getPixel(i-1,j)!=0) //pixel to the left 00753 n ++; // increase n by 1 00754 if (lcd.getPixel(i-1,j+1)!=0) //pixel to the bottom-left 00755 n ++; // increase n by 1 00756 if (lcd.getPixel(i,j-1)!=0) // pixel to the top 00757 n ++; // increase n by 1 00758 if (lcd.getPixel(i,j+1)!=0) //pixel to the bottom 00759 n ++; // increase n by 1 00760 if (lcd.getPixel(i+1,j-1)!=0) //pixel to the top-right 00761 n ++; // increase n by 1 00762 if (lcd.getPixel(i+1,j)!=0) // pixel to the right 00763 n ++; // increase n by 1 00764 if (lcd.getPixel(i+1,j+1)!=0) //pixel to the bottom right 00765 n ++; // increase n by 1 00766 return n ; 00767 } 00768 00769 void checkOverlap() 00770 { 00771 00772 for (int i=40+heroX ; i<50+heroX ; i++) { ///loop follows the hero and checks for overlap around him 00773 for (int j=35+heroY ; j<48+heroY ; j++) { 00774 00775 int check = intersection(i,j); ///int gets number of pixels around the hero 00776 //lcd.setPixel(i,j); 00777 char bit[50]; 00778 sprintf(bit,"Pixels: %d",check); 00779 00780 00781 for(int i = 40; i < 50; i++) { ///provides safety if hero is in default position he doesn't get killed by enemies 00782 for (int j = 35; j < 47; j++) { 00783 00784 if (lcd.getPixel(i,j) && check > 6) { ///6 is the offset of the neigbours, as hero has his own neighbours pixels 00785 check = 6; 00786 } 00787 } 00788 } 00789 if (check > 7) { 00790 tries --; 00791 //if tries 00792 lcd.printString("BANG!",0,0); ///Bang message is displayed when overlap has occured 00793 if (sound ) { 00794 buzzer.write(0.5); 00795 //buzzer.pulsewidth(0.9); 00796 } else { 00797 buzzer.write(0.0); 00798 } 00799 lcd.refresh(); 00800 wait(2); 00801 lcd.clear(); 00802 00803 if (tries == 2) { 00804 00805 g_button1_flag = 0; 00806 lcd.printString("Ready.",20,1); 00807 lcd.refresh(); 00808 wait(0.5); 00809 lcd.printString("Ready..",20,1); 00810 lcd.refresh(); 00811 wait(0.5); 00812 lcd.printString("Ready...",20,1); 00813 lcd.refresh(); 00814 wait(1); 00815 lcd.printString("GO!",31,3); 00816 lcd.refresh(); 00817 wait(1); 00818 lcd.clear(); 00819 fsm_state = 1; ///2 lives left 00820 } else if (tries == 1) { 00821 00822 g_button1_flag = 0; 00823 lcd.clear(); 00824 lcd.printString("Last Chance!",10,2); 00825 lcd.refresh(); 00826 wait(1); 00827 fsm_state = 2; //1 life left 00828 } else if (tries == 0) { 00829 00830 g_button1_flag = 0; 00831 fsm_state = 3; 00832 led_output=fsm [fsm_state ]; 00833 lcd.clear(); 00834 lcd.printString("Game Over!",10,2); 00835 timer.stop(); 00836 timer.reset(); 00837 lcd.refresh(); 00838 wait(2); 00839 00840 ticker.detach(); 00841 game_ticker.attach(&game_timer_isr,0.2); ///attach a slower ticker to save power while not playing 00842 lcd.clear(); 00843 lcd.printString("Play again!",0,0); 00844 lcd.drawCircle(70,4,2,1); 00845 lcd.refresh(); 00846 g_button_flag = 0; 00847 00848 while(1) { 00849 if (g_button1_flag ) { ///if button1 is pressed 00850 00851 g_button1_flag = 0; ///reset button1 flag 00852 level = 0; ///reset parameters 00853 tries = 3; 00854 fsm_state = 0; 00855 led_output=fsm [fsm_state ]; 00856 buzzer.write(0.0); 00857 lcd.clear(); 00858 ///reset values 00859 heroX = 0; 00860 heroY = 0; 00861 rectY = 0; 00862 circleX = 0; 00863 main(); ///call main 00864 } 00865 sleep(); 00866 } 00867 00868 } 00869 heroX = 0; 00870 heroY = 0; 00871 rectY = 0; 00872 circleX = 0; 00873 led_output=fsm [fsm_state ]; 00874 buzzer.write(0.0); 00875 } 00876 00877 } 00878 } 00879 } 00880 00881 00882 00883 00884 00885
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