A retro gaming programme, designed for use on a portable embedded system. Incorporates power saving techniques.
Dependencies: ConfigFile N5110 PowerControl beep mbed
main.cpp
- Committer:
- el13drt
- Date:
- 2015-05-11
- Revision:
- 80:55c724c1286c
- Parent:
- 79:a92239ce3b20
File content as of revision 80:55c724c1286c:
/** @file main.cpp @brief Program implementation @brief "Example code of how to read a joystick" courtesy of Craig A. Evans. Created: 7th March 2015. */ #include "PowerControl/PowerControl.h"//for sleep modes #include "PowerControl/EthernetPowerControl.h"//for Ethernet Power Down #include "mbed.h" #include "N5110.h" #include "beep.h" #include "tower.h" #include <ctime> ///writes to CFG file. void write() { ///Sets a Key 1 and Value 1. if (!cfg.setValue("Open1", player1initials)) {//key/value error("Failure to set a value.\n"); } ///Sets a Key 2 and Value 2. if (!cfg.setValue("Open2", player2initials)) {//key/value error("Failure to set a value.\n"); } ///Sets a Key 3 and Value 3. if (!cfg.setValue("Open3", player3initials)) {//key/value error("Failure to set a value.\n"); } ///If a file does not already exist, create one. ///If one already exits, append the file. if (!cfg.write("/local/towerMemory.cfg")) {//Write key and value to CFG file error("Failure to write a configuration file.\n"); } } ///Reads CFG file. void read() { //Checks if key matches. char *key1 = "Open1"; char *key2 = "Open2"; char *key3 = "Open3"; int count=0; ///Checks Key for match, then reads Value - if read is unsuccessful it prints error message. if (!cfg.read("/local/towerMemory.cfg")) { error("Failure to read a configuration file.\n"); } ///check file size - if size acceptable, prints buffer to location. if (cfg.getValue(key1, &player1initials[0], sizeof(player1initials))) { serial.printf("%s\n",player1initials); count=10;//first possible character of score highScore1=0;//make sure that multiplacation works correctly while(1){ //if first iteration/not an empty score if(highScore1!=0){ highScore1*=10; } //convert ASCII to int value highScore1+=player1initials[count]-48; //increment count++; //check to see if at end of string array if(player1initials[count]==NULL){ break; } } serial.printf("%i\n",highScore1); } //check file size - if size acceptable, prints buffer to location. if (cfg.getValue(key2, &player2initials[0], sizeof(player2initials))) { serial.printf("%s\n",player2initials); count=10; highScore2=0; while(1){ if(highScore2!=0){ highScore2*=10; } highScore2+=player2initials[count]-48; count++; if(player2initials[count]==NULL){ break; } } serial.printf("%i\n",highScore2); } //check file size - if size acceptable, prints buffer to location. if (cfg.getValue(key3, &player3initials[0], sizeof(player3initials))) { serial.printf("%s\n",player3initials); count=10; highScore3=0; while(1){ if(highScore3!=0){ highScore3*=10; } highScore3+=player3initials[count]-48; count++; if(player3initials[count]==NULL){ break; } } serial.printf("%i\n",highScore3); } } ///Struct declaration for storing alphabet arrays. struct State { char output1; char output2; char output3; int nextState[2]; }; ///Assigns new identifier to Struct. typedef const struct State STYP; ///Finite State Machine for Struct data members. STYP fsm[27] = { ///Outputs 1,2 and 3 for Initial Arrays. {'A','A','A',{1,26}}, {'B','B','B',{2,0}}, {'C','C','C',{3,1}}, {'D','D','D',{4,2}}, {'E','E','E',{5,3}}, {'F','F','F',{6,4}}, {'G','G','G',{7,5}}, {'H','H','H',{8,6}}, {'I','I','I',{9,7}}, {'J','J','J',{10,8}}, {'K','K','K',{11,9}}, {'L','L','L',{12,10}}, {'M','M','M',{13,11}}, {'N','N','N',{14,12}}, {'O','O','O',{15,13}}, {'P','P','P',{16,14}}, {'Q','Q','Q',{17,15}}, {'R','R','R',{18,16}}, {'S','S','S',{19,17}}, {'T','T','T',{20,18}}, {'U','U','U',{21,19}}, {'V','V','V',{22,20}}, {'W','W','W',{23,21}}, {'X','X','X',{24,22}}, {'Y','Y','Y',{25,23}}, {'Z','Z','Z',{26,24}}, {'.','.','.',{0,25}}, }; ///Creates enumerated type (0,1,2,3 etc. for direction). enum DirectionName { UP, DOWN, LEFT, RIGHT, CENTRE, UNKNOWN }; ///Struct for Joystick. typedef struct JoyStick Joystick; struct JoyStick { float x;//current x value float x0;//'centred' x value float y;//current y value float y0;//'centred' y value int button;//button state (assume pull-down used, so 1 = pressed, 0 = unpressed) DirectionName direction;//current direction }; ///create struct variable Joystick joystick; ///Called when timerA expires. If buttonA is pressed - set flag A. void timerExpiredA() { ///Includes backlight reset for user input. if((deBounce1.read_ms()>=95)&&(buttonA == 1)) { buttonFlagA = 1; lcd.setBrightness(1.0); serial.printf("flagA set\n"); deBounce1.reset(); ///Reset value for debounce timer } } ///Called when timer expires. If buttonB is pressed - Set flag B. void timerExpiredB() { ///Includes backlight reset for user input. if((deBounce2.read_ms()>=95)&&(buttonB == 1)) { buttonFlagB = 1; lcd.setBrightness(1.0); serial.printf("flagB set\n"); deBounce2.reset();//reset timer ///Resets value for debounce timer } } ///Randomises initial co-ordinates for falling hazards. void randomise() { ///Creates initial seed for randomisation. srand (time(NULL));//initial seed for randomisation //initial random x co-ordinates //for falling hazards //(values between 3 and 76) randX1 = rand() % 74 + 5; randX2 = rand() % 74 + 5; randX3 = rand() % 74 + 5; randX4 = rand() % 74 + 5; randX5 = rand() % 74 + 5; randX6 = rand() % 74 + 5; } ///Draws the games static background. void drawBackground() { //x, y, w, h, fill - draw ground lcd.drawRect(0,47,84,0,1); //x, y, w, h, fill - draw left wall lcd.drawRect(2,0,0,47,1); //left wall - brick line 1 lcd.drawLine(1,1,1,48,2); //left wall - brick line 2 lcd.drawLine(0,0,0,48,2); //x, y, w, h, fill - draw right wall lcd.drawRect(81,0,0,47,1); //right wall - brick line 1 lcd.drawLine(82,0,82,48,2); //right wall - brick line 2 lcd.drawLine(83,1,83,48,2); lcd.refresh(); } ///Draws the Introduction screen. void drawWelcome() { //bottom border lcd.drawRect(0,44,84,2,1); //top border lcd.drawRect(0,1,84,2,1); lcd.refresh(); //print initials 'DRT' lcd.printChar('D',30,2); wait(0.6); lcd.printChar('R',37,2); wait(0.6); lcd.printChar('T',44,2); wait(0.6); //print 'presents...' lcd.printString("presents...",8,3); wait(1.0); //dramatic flashing buzzer.beep(5000,0.3); lcd.inverseMode(); wait(0.2); lcd.normalMode(); wait(0.2); buzzer.beep(5000,0.3); lcd.inverseMode(); wait(0.2); lcd.normalMode(); wait(1.0); //more dramatic flashing buzzer.beep(5000,0.3); lcd.inverseMode(); wait(0.2); lcd.normalMode(); wait(0.2); buzzer.beep(5000,0.3); lcd.inverseMode(); wait(0.2); lcd.normalMode(); wait(0.6); } ///Draws Pixel Ninja. void drawNinja() { //x, y, w, h, fill - left leg lcd.drawRect(a1,39,0,7,1); //right leg lcd.drawRect(a2,39,0,7,1); //centre stick lcd.drawRect(a3,37,0,7,1); //back of the head lcd.drawRect(a4,33,0,4,1); //top of the head lcd.drawRect(a5,33,4,0,1); //jaw lcd.drawRect(a6,38,2,0,1); //right shoulder lcd.drawRect(a7,40,1,0,1); //left shoulder lcd.drawRect(a8,40,1,0,1); //left arm lcd.drawRect(a9,41,0,1,1); //right arm lcd.drawRect(a10,41,0,1,1); //right eye lcd.drawRect(a11,35,0,0,1); //mouth piece lcd.drawRect(a12,37,0,0,1); //left eye lcd.drawRect(a13,35,0,0,1); //sword handle lcd.drawRect(a14,36,0,0,1); lcd.drawRect(a15,37,0,0,1); lcd.drawRect(a16,38,0,0,1); lcd.refresh(); } ///Implements Pixel Ninja's boundary conditions. void ninjaBoundaries() { ///If ninja exceeds max boundary, Ninja equals max boundary. //right eye if(a11 > 80 ) a11 = 80; //mouth piece if(a12 > 80) a12 = 80; //right arm if(a10> 80) a10 = 80; //right shoulder if(a7 > 79) a7 = 79; //right leg if(a2 > 78) a2 = 78; //jaw if(a6 > 78) a6 = 78; //left eye if(a13 > 78) a13 = 78; //centre if(a3 > 77) a3 = 77; //back of the head if(a4 > 76 ) a4= 76; //topf of the head if(a5 > 76) a5 = 76; //left leg if(a1>76) a1 = 76; //sword if(a16>75) a16 = 75; //left shoulder if(a8 >74) a8 = 74; //left arm if(a9>74) a9 = 74; //sword if(a15>74) a15 = 74; //sword if(a14 > 73) a14 = 73; //right eye if(a11 < 5 ) a11 = 5; //mouth piece if(a12 < 3) a12 = 3; //right arm if(a10< 9) a10 = 9; //right shoulder if(a7 < 8) a7 = 8; //right leg if(a2 < 7) a2 = 7; //jaw if(a6 < 3) a6 = 3; //left eye if(a13 < 3) a13 = 3; //centre if(a3 < 6) a3 = 6; //back of the head if(a4 < 7) a4= 7; //top of the head if(a5 < 3) a5 = 3; //left leg if(a1 < 5) a1 = 5; //sword if(a16 < 8) a16 = 8; //left shoulder if(a8 < 3) a8 = 3; //left arm if(a9 < 3) a9 = 3; //sword if(a15 < 9) a15 = 9; //sword if(a14 < 10) a14 = 10; ///If ninja falls below min boundary, Ninja equals min boundary. } ///Resets configuration values for the game. void resetGame() { ///Resets Global variables for pixelNinja movement. a1 = 22; a2 = 24; a3 = 23; a4 = 22; a5 = 22; a6 = 24; a7 = 25; a8 = 20; a9 = 20; a10 = 26; a11 = 26; a12 = 26; a13 = 24; a14 = 19; a15 = 20; a16 = 21; ///Resets current score. score = 0; //in this case the X values are given a //new random variable each time the player //dies, exits or starts a new game ///Randomises X co-ordinates. randomise(); ///Resets Y co-ordinates. randY1 = 0; randY2 = 0; randY3 = 0; randY4 = 0; randY5 = 0; randY6 = 0; ///Clears screen. lcd.clear(); } ///Draws falling hazards. void drawHazards() { //X, Y, radius, fill lcd.drawCircle(randX1,randY1,2,1); lcd.drawCircle(randX2,randY2,2,1); lcd.drawCircle(randX3,randY3,2,1); lcd.drawCircle(randX4,randY4,2,1); lcd.drawCircle(randX5,randY5,2,1); lcd.drawCircle(randX6,randY6,2,1); lcd.refresh(); } ///Increments the hazards to make them "Fall". void hazardFall() { ///Increments values by chosen difficulty. randY1 = randY1 += fall; randY2 = randY2 += fall; randY3 = randY3 += fall; randY4 = randY4 += fall; randY5 = randY5 += fall; randY6 = randY6 += fall; ///Loops objects once they've hit the floor. if (randY1>=48) randY1=0; if (randY2>=48) randY2=0; if (randY3>=48) randY3=0; if (randY4>=48) randY4=0; if (randY5>=48) randY5=0; //each time the objects loop, a new pseudo random value //is assigned to the global variables (randX) to //randomise their positions ///Assigns new random X co-ordinate once looped. if (randY6>=48) { randY6=0; ///Incements current score with each wave of hazards. score = score++;//increment score by 1 after each wave of hazards randomise();//randomise x co-ordinates again } } ///Clears old pixels and keeps set pixels. void startrek() { ///Loops thorugh screen pixel by pixel. for (int i=3; i<81; i++)//loops through rows for (int j=0; j<47; j++) if (cells[i][j]) {//if there's a pixel then keep it lcd.setPixel(i,j); } else { lcd.clearPixel(i,j);//else remove the old ones } lcd.refresh(); } ///Clears old cursor, sets new one. void refreshCursor1() { ///Loops through select part of the screen. for (int i=70; i<80; i++)//loops through rows for (int j=17; j<25; j++) if (cells[i][j]) {//if there's a pixel then keep it lcd.setPixel(i,j); } else { lcd.clearPixel(i,j);//else remove the old ones } lcd.refresh(); } ///Clears old cursor, sets new one. void refreshCursor2() { ///Loops though select part of the screen. for (int i=70; i<80; i++)//loops through rows for (int j=25; j<32; j++) if (cells[i][j]) {//if there's a pixel then keep it lcd.setPixel(i,j); } else { lcd.clearPixel(i,j);//else remove the old ones } lcd.refresh(); } ///Clears old cursor, sets new one. void refreshCursor3() { ///Loops through select part of the screen. for (int i=70; i<80; i++)//loops through rows for (int j=32; j<40; j++) if (cells[i][j]) {//if there's a pixel then keep it lcd.setPixel(i,j); } else { lcd.clearPixel(i,j);//else remove the old ones } lcd.refresh(); } ///Creates buzzer audible/LED to light when either button is pressed. void actionButtons() { ///If FX is on emit beep and LED flash, else just flash. if((FX == 0)&&(buttonA||buttonB)) { ledA = 1; buzzer.beep(1500,0.3); } if (buttonA || buttonB) { ledA = 1; } else { ledA = 0; } } ///Implements Joystick navigation for main menu. void mainMenu(int& mainOption) { ///Includes actionButtons(); actionButtons();//set audible/light for button if (printFlag) {//if flag set, clear flag and print joystick values to serial port printFlag = 0; //option up if (joystick.direction == UP) { serial.printf(" UP\n"); mainOption = mainOption--; if (mainOption < 0)mainOption = 0; } //option down if (joystick.direction == DOWN) { serial.printf(" DOWN\n"); mainOption = mainOption++; if (mainOption > 2)mainOption = 2; } //Centre / Unknown orientation if (joystick.direction == CENTRE) serial.printf(" CENTRE\n"); if (joystick.direction == UNKNOWN) serial.printf(" Unsupported direction\n"); //'Play Game' option 1 if (mainOption == 0) { lcd.printString("Play Game",3,4); } //'High Scores' option 2 if (mainOption == 1) { lcd.printString(" Scores ",3,4); } //'Options' option 3 if (mainOption == 2) { lcd.printString(" Options ",3,4); } } } ///Draws the Main Menu. void drawMainMenu() { //bottom border lcd.drawRect(0,47,84,0,1); //top border lcd.drawRect(0,0,84,2,1); //title outline lcd.drawRect(3,6,77,10,0); ////castle //x, y, w, h, fill////////////////////// //castle main bulk lcd.drawRect(59,32,21,8,1); //left window bulk lcd.drawRect(59,22,2,10,1); //centre left window bulk lcd.drawRect(65,22,2,10,1); //centre right window bulk lcd.drawRect(72,22,2,10,1); //right window bulk lcd.drawRect(78,22,2,10,1); //central window bulk lcd.drawRect(68,25,3,7,1); //central window bulk lcd.drawRect(75,28,0,0,1); lcd.drawRect(77,28,0,0,1); lcd.drawRect(64,28,0,0,1); lcd.drawRect(62,28,0,0,1); //above left window bulk lcd.drawRect(62,25,3,2,1); //above right window bulk lcd.drawRect(75,25,2,2,1); //lower right line lcd.drawRect(71,42,9,0,1); //upper right line lcd.drawRect(70,41,10,0,1); //upper left line lcd.drawRect(59,41,10,0,1); //lower left line lcd.drawRect(59,42,9,0,1); //bottom left bulk lcd.drawRect(59,43,8,3,1); //bottom right bulk lcd.drawRect(72,43,8,3,1); //option arrows - lower lcd.drawRect(27,42,4,0,1); lcd.drawRect(28,43,2,0,1); lcd.drawRect(29,44,0,0,1); //option arrows - higher lcd.drawRect(27,29,4,0,1); lcd.drawRect(28,28,2,0,1); lcd.drawRect(29,27,0,0,1); //print 'Xtreme Tower' lcd.printString("Xtreme Tower",7,1); lcd.refresh(); } ///Implements Joystick navigation for Exit Menu. void exitMenu(int& exitOption) { ///Includes actionButtons(); actionButtons(); if (printFlag) {//if flag set, clear flag and print joystick values to serial port printFlag = 0; if (joystick.direction == LEFT) { serial.printf(" LEFT\n"); exitOption--; if(exitOption < 0)exitOption = 0; } if (joystick.direction == RIGHT) { serial.printf(" RIGHT\n"); exitOption++; if(exitOption > 1)exitOption = 1; } if (joystick.direction == CENTRE) serial.printf(" CENTRE\n"); if (joystick.direction == UNKNOWN) serial.printf(" Unsupported direction\n"); } //draws option cursor if(exitOption == 0) { lcd.printString("YES",33,3); } else if(exitOption == 1) { lcd.printString(" NO",33,3); } } ///If the joystick is moved left, Pixel Ninja moves left. void ninjaLeft() { ///Decrements values for left movement. a1 = a1-=2; a2 = a2-=2; a3 = a3-=2; a4 = a3+1; a5 = a3-3; a6 = a3-3; a7 = a7-=2; a8 = a8-=2; a9 = a9-=2; a10 = a10-=2; a11 = a3-1; a12 = a3-3; a13 = a3-3; a14 = a3+4; a15 = a3+3; a16 = a3+2; ///Also turns head to face left. } ///If the Joystick is moved right, Pixel Ninja moves right. void ninjaRight() { ///Increments for right movement. a1 = a1+=2; a2 = a2+=2; a3 = a3+=2; a4 = a3-1; a5 = a3-1; a6 = a3+1; a7 = a7+=2; a8 = a8+=2; a9 = a9+=2; a10 = a10+=2; a11 = a3+3; a12 = a3+3; a13 = a3+1; a14 = a3-4; a15 = a3-3; a16 = a3-2; ///Turns head to face right. } ///Draws the Exit Menu. void drawExitMenu() { //set exit menu lcd.clear(); drawBackground(); lcd.printString("Exit Game?",14,1); lcd.drawRect(8,3,70,30,0);//title outline //option arrow - right lcd.drawRect(55,25,0,4,1); lcd.drawRect(56,26,0,2,1); lcd.drawRect(57,27,0,0,1); //option arrow - left// lcd.drawRect(27,25,0,4,1); lcd.drawRect(26,26,0,2,1); lcd.drawRect(25,27,0,0,1); lcd.refresh(); } ///Implements Joystick navigation for Options Menu. void optionsMenu(int& option) { //joystick selection if (printFlag) { //if flag set, clear flag and print joystick values to serial port printFlag = 0; //option up if (joystick.direction == UP) { serial.printf(" UP\n"); option = option--; if (option < 0)option = 0; } //option down if (joystick.direction == DOWN) { serial.printf(" DOWN\n"); option = option++; if (option > 1)option = 1; } //Centre / Unknown orientation if (joystick.direction == CENTRE) serial.printf(" CENTRE\n"); if (joystick.direction == UNKNOWN) serial.printf(" Unsupported direction\n"); //'Difficulty' option 1 if (option == 0) { lcd.drawCircle(72,27,2,1); refreshCursor3(); } //'Sound FX' option 2 if (option == 1) { lcd.drawCircle(72,35,2,1); refreshCursor2(); } } lcd.refresh(); } ///Draws the Options Menu. void drawOptionsMenu() { lcd.clear();//clear screen drawBackground(); lcd.drawRect(3,6,77,10,0);//title outline lcd.drawRect(0,47,84,0,1);//bottom border lcd.drawRect(0,0,84,2,1);//top border lcd.printString("Options",20,1);//title lcd.printString("Difficulty",5,3); lcd.printString("Sound FX",5,4); lcd.refresh(); } ///Implements Joystick navigation for Difficulty Options. void difficultyMenu(int& subOption) { ///Includes actionButtons(); actionButtons(); //joystick selection if (printFlag) {//if flag set, clear flag,print joystick values printFlag = 0; //option up if (joystick.direction == UP) { serial.printf(" UP\n"); subOption = subOption--; if (subOption < 1)subOption = 1; } //option down if (joystick.direction == DOWN) { serial.printf(" DOWN\n"); subOption = subOption++; if (subOption > 3)subOption = 3; } //Centre / Unknown orientation if (joystick.direction == CENTRE) serial.printf(" CENTRE\n"); if (joystick.direction == UNKNOWN) serial.printf(" Unsupported direction\n"); //'Easy' option 1 if (subOption == 1) { lcd.drawCircle(72,19,2,1); refreshCursor2(); refreshCursor3(); if(buttonFlagA) { //select easy //rightness(1.0); buttonFlagA = 0; fall = 1; } } //'Normal' option 2 if (subOption == 2) { lcd.drawCircle(72,27,2,1); refreshCursor1(); refreshCursor3(); if(buttonFlagA) { //select normal //rightness(1.0); buttonFlagA = 0; fall = 2; } } //'Forget It' option 3 if (subOption == 3) { lcd.drawCircle(72,35,2,1); refreshCursor1(); refreshCursor2(); if(buttonFlagA) { //select difficult //rightness(1.0); buttonFlagA = 0; fall = 3; } } } lcd.refresh(); } ///Draws Difficulty Menu. void drawDifficultyMenu() { lcd.clear(); drawBackground(); lcd.drawRect(0,47,84,0,1);//bottom border lcd.drawRect(0,0,84,2,1);//top border lcd.refresh(); lcd.printString("*Difficulty*",5,1);//title lcd.printString("Easy",5,2);//title lcd.printString("Normal",5,3);//title lcd.printString("Forget It",5,4);//title } ///Implements Joystick navigation for FX Menu. void soundFXMenu(int& fxOption) { ///Inlcudes actionButtons(); actionButtons(); //joystick selection if (printFlag) {//if flag set, clear flag,print joystick values printFlag = 0; //option up if (joystick.direction == UP) { serial.printf(" UP\n"); fxOption = fxOption--; if (fxOption < 0)fxOption = 0; } //option down if (joystick.direction == DOWN) { serial.printf(" DOWN\n"); fxOption = fxOption++; if (fxOption > 1)fxOption = 1; } //Centre / Unknown orientation if (joystick.direction == CENTRE) serial.printf(" CENTRE\n"); if (joystick.direction == UNKNOWN) serial.printf(" Unsupported direction\n"); } //'ON' option 1 if (fxOption == 0) { lcd.drawCircle(72,27,2,1);//draw cursor 'ON' refreshCursor1(); refreshCursor3(); if(buttonFlagA) { buttonFlagA =0; FX = 0; serial.printf("FX = %d\n",FX); } } //'OFF' option 2 if (fxOption == 1) { lcd.drawCircle(72,35,2,1);//draw cursor 'OFF' refreshCursor1(); refreshCursor2(); if(buttonFlagA) { buttonFlagA =0; FX = 1; serial.printf("FX = %d\n",FX); } } lcd.refresh(); } ///Draws the FX Menu. void drawSoundFXMenu() { lcd.clear(); drawBackground(); lcd.drawRect(0,47,84,0,1);//bottom border lcd.drawRect(0,0,84,2,1);//top border lcd.printString("*Sound FX*",10,1);//title lcd.printString("ON",35,3);//title lcd.printString("OFF",33,4);//title lcd.refresh(); } ///Game flag for main game. void gameLoop() { ///Sets gameFlag when game Timer expires. gameFlag = 1; } ///Shifts and stores the new scores accordingly. void newScore() { ///Entry conditions mean function is only used if user equals or beats High Score 3. if(score >= highScore3) {//entry condition buttonFlagA = 0;//reset flags buttonFlagB = 0; lcd.clear();//clears screen drawBackground();//draws background lcd.printString("High Score!!",7,0);//title lcd.printString("Enter ID",19,4);//title int n;//local variable used for storing temporary global variable int initial = 0;//used for isolating which initial is being selected char x,y,z; //print initial characters x=fsm[state1].output1; lcd.printChar(x,28,2); y=fsm[state2].output2; lcd.printChar(y,40,2); z=fsm[state3].output3; lcd.printChar(z,52,2); while(1) { //joystick selection if (printFlag) {//if flag set, clear flag,print joystick values printFlag = 0; if(joystick.direction==CENTRE) { preDirection=0; } if (joystick.direction == UP ) { serial.printf(" UP\n"); state1 = state1--; if (state1 < 0)state1 = 0; state2 = state2--; if (state2 < 0)state2 = 0; state3 = state3--; if (state3 < 0)state3 = 0; } //option down if (joystick.direction == DOWN ) { serial.printf(" DOWN\n"); state1 = state1++; if (state1 > 26)state1 = 26; state2 = state2++; if (state2 > 26)state2 = 26; state3 = state3++; if (state3 > 26)state3 = 26; } if (joystick.direction == LEFT && preDirection==0) { serial.printf(" LEFT\n"); initial = initial--; if (initial < 0)initial = 0; preDirection=1; } if (joystick.direction == RIGHT && preDirection==0) { serial.printf(" RIGHT\n"); initial = initial++; if (initial > 2)initial = 2; preDirection=1; } //Centre / Unknown orientation if (joystick.direction == CENTRE) serial.printf(" CENTRE\n"); if (joystick.direction == UNKNOWN) serial.printf(" Unsupported direction\n"); } //if initial 3 display selected character if (initial == 0) { x=fsm[state1].output1; lcd.printChar(x,28,2); } //if initial 1 display selected character if(initial == 1) { y=fsm[state2].output2; lcd.printChar(y,40,2); } //if initial 2 display selected character if(initial == 2) { z=fsm[state3].output3; lcd.printChar(z,52,2); } if(buttonFlagA) { actionButtons(); buttonFlagA = 0; buttonFlagB = 0; break; } } //if player beats High Score 3, replace it with new score if(score >= highScore3 && score<highScore2 ) { highScore3 = score; sprintf (player3initials, "3.%c%c%c.....%i",x,y,z,highScore3); } //if player beats High Score 3 and 2, replace HighScore2 with new score if(score >= highScore2 && score< highScore1) { highScore3 = highScore2; n = score; highScore2 = n; sprintf (player3initials, "3.%c%c%c.....%i",player2initials[2],player2initials[3],player2initials[4],highScore3); sprintf (player2initials, "2.%c%c%c.....%i",x,y,z,highScore2); } //if player beats High Score 1, 2 and 3, replace highScore1 with new score if(score >= highScore1 ) { highScore3 = highScore2; highScore2 = highScore1; n = score; highScore1 = n; sprintf (player3initials, "3.%c%c%c.....%i",player2initials[2],player2initials[3],player2initials[4],highScore3); sprintf (player2initials, "2.%c%c%c.....%i",player1initials[2],player1initials[3],player1initials[4],highScore2); sprintf (player1initials, "1.%c%c%c.....%i",x,y,z,highScore1); } state1 = 0; state2 = 0; state3 = 0; write(); } } ///Begins Game. void game(int& exitFlag, int& exitOption) { ///Includes action buttons. actionButtons(); lcd.clear();//clears screen drawBackground();//draw background while(1) { //print score - top left of display char buffer [14];//create buffer for string int length = sprintf(buffer,"Level:%d",score);//insert buffer lcd.printString(buffer,3,0);//display actionButtons(); drawNinja();//set character drawHazards();//initiates hazards if(gameFlag) { gameFlag = 0; hazardFall();//increments hazards towards floor if (printFlag) { //if flag set, clear flag and print joystick values to serial port printFlag = 0; if (joystick.direction == RIGHT) { serial.printf(" RIGHT\n"); ninjaRight();//move right ninjaBoundaries(); } //check joystick direction if (joystick.direction == LEFT) { serial.printf(" LEFT\n"); ninjaLeft();//move left ninjaBoundaries(); } if (joystick.direction == CENTRE) serial.printf(" CENTRE\n"); if (joystick.direction == UNKNOWN) serial.printf(" Unsupported direction\n"); //integer to represent character being //struck by falling object int contactPoint = 0; //contact points if(lcd.getPixel((a3),32)) contactPoint++; if(lcd.getPixel((a3+3),32)) contactPoint++; if(lcd.getPixel((a3-3),32)) contactPoint++; //if contact point is not zero //character has been hit //and the game ends if ( contactPoint !=0) { lcd.printString("Game Over",17,2); lcd.inverseMode(); buzzer.beep(2000,0.2);//frequeny/duration wait(0.5); lcd.normalMode(); wait(0.5); lcd.inverseMode(); buzzer.beep(2000,0.2); wait(0.5); lcd.normalMode(); wait(0.5); lcd.inverseMode(); buzzer.beep(2000,0.2); wait(0.5); lcd.normalMode(); newScore();//enter initial screen if previous scores are beaten //write(); resetGame();//reset values break; } lcd.refresh();//refresh screen startrek();//clears unset pixels, keeps set pixels //Exit Menu (Back button pressed)// if(buttonFlagB) { buttonFlagB = 0;//reset flags buttonFlagA = 0; actionButtons(); drawExitMenu();//draws the exit menu while(1) { exitMenu(exitOption);//presents exit options //'exit' option YES if((buttonFlagA)&&(exitOption == 0)) { //returns to menu //rightness(1.0); exitOption = 1;//reset intial option value buttonFlagA = 0;//reset flags buttonFlagB = 0; actionButtons(); lcd.clear();//clears screen resetGame();//resets scores/objects exitFlag = 1;//sets exit flag break; } //'exit' option NO - returns to game if((buttonFlagA)&&(exitOption == 1)) { buttonFlagA = 0;//resets flags buttonFlagB = 0; break; } sleep();//put while to sleep } //if 'exit' option YES, resets //game values returns to main menu if (exitFlag!=0) { //if exit flag set exitFlag = 0;//reset flag break;//break to main menu } } serial.printf("Score: %i \n",score);//print Score for debug } } } } ///Draws Scores Menu. void scores() { ///Include actionButtons(); actionButtons(); lcd.clear();//clear screen drawBackground();//set background lcd.printString("High Scores",10,0);//title //prints scores with names lcd.printString(player1initials,5,2);//display lcd.printString(player2initials,5,3);//display lcd.printString(player3initials,5,4);//display while(1) { actionButtons();//select //back to menu if(buttonFlagB) { buttonFlagA = 0;//reset flags buttonFlagB = 0; lcd.clear(); break; } sleep();//put while to sleep } } ///Implements selection for Options Menu. void optionsMenu() { ///Includes actionButtons(); int option = 0; int subOption = fall;//keeps cursor on selected option, even after exiting screen int fxOption = 0; actionButtons(); drawOptionsMenu();//draws options menu //counters for navigation while(1) { actionButtons(); optionsMenu(option);//presents options //================ Difficulty menu ======================= if ((option == 0)&&(buttonFlagA)) { //rightness(1.0); buttonFlagA = 0;//reset flag actionButtons(); drawDifficultyMenu();//draws difficulty menu while(1) { actionButtons(); difficultyMenu(subOption);//presents difficulty options if(buttonFlagB) { buttonFlagB = 0;//reset flags buttonFlagA = 0; lcd.clear();//clear screen break;//return back } sleep();//put while to sleep } drawOptionsMenu(); } //================sound FX menu================================== if((option ==1)&&(buttonFlagA)) { buttonFlagA = 0;//reset flags buttonFlagB = 0; actionButtons(); drawSoundFXMenu();//draw menu while(1) { actionButtons(); soundFXMenu(fxOption);//presents options //back to options menu if(buttonFlagB) { buttonFlagB = 0;//reset flags buttonFlagA = 0; lcd.clear();//clear screen break;//return back } sleep();//put while to sleep } drawOptionsMenu(); } //back to mainmenu if(buttonFlagB) { buttonFlagB = 0;//reset flags buttonFlagA = 0; lcd.clear();//clear break;//return back } sleep();//put while to sleep } } ///Reads default position of Joystick for calibration. void calibrateJoystick() { joyButton.mode(PullDown); //must not move during calibration joystick.x0 = xPot; //initial positions in the range 0.0 to 1.0 (0.5 if centred exactly) joystick.y0 = yPot; } ///Updates Joytick position according to voltage readings. void updateJoystick() { //read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred) joystick.x = xPot - joystick.x0; joystick.y = yPot - joystick.y0; //read button state joystick.button = joyButton; //calculate direction depending on x,y values //tolerance allows a little lee-way in case joystick not exactly in the stated direction if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) { joystick.direction = CENTRE; } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) { joystick.direction = DOWN; lcd.setBrightness(1.0); } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) { joystick.direction = UP; lcd.setBrightness(1.0); } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) { joystick.direction = RIGHT; lcd.setBrightness(1.0); } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) { joystick.direction = LEFT; lcd.setBrightness(1.0); } else { joystick.direction = UNKNOWN; } //set flag for printing printFlag = 1; } ///Turns off screen backlighting. void screenOff() { ///Sets lcd birghtness to 0.0. lcd.setBrightness(0.0); } ///When idle, calls the funtion screenOff(); void idleMode() { ///If user input detected, reset timer. if((buttonFlagA)||(buttonFlagB)||(joystick.direction)) { //call standby mode if idle int time = 60; standby.attach(&screenOff,time); } } int main() { PHY_PowerDown();//powers down the Ethernet ledP = 1;//power LED on randomise();//randomises falling hazards (initial values only) calibrateJoystick();//get centred values of joystick pollJoystick.attach(&updateJoystick,1.0/10.0);//read joystick 10 times per second lcd.init();//initialise screen drawWelcome();//welcome screen lcd.clear();//clear screen buttonA.mode(PullDown);//pull down buttonA buttonB.mode(PullDown);//pull down buttonB int exitFlag = 0;//exit flag int mainOption = 0;//counter for main menu int exitOption = 1;//counter for exit menu read();//set high scores using flash memory deBounce1.start();//timer buttonA debounce deBounce2.start();//timer buttonB debounce timerGame.attach(&gameLoop,0.1);//timer game delay timerA.attach(&timerExpiredA, 0.1);//checks state of buttonA timerB.attach(&timerExpiredB, 0.1);//checks state of buttonB idleMode();//turns off screen if idle. while(1) { drawMainMenu();//draws main menu mainMenu(mainOption);//presents main menu options actionButtons();//sound light when buttons pressed // if 'Play Game' selected if ((mainOption == 0)&&(buttonFlagA)) { buttonFlagA = 0; buttonFlagB = 0; game(exitFlag, exitOption);//actual game } // if 'Scores' selected if((mainOption == 1)&&(buttonFlagA)) { buttonFlagA = 0; buttonFlagB = 0; scores(); } // if 'option' selected if((mainOption == 2)&&(buttonFlagA)) { buttonFlagA = 0; buttonFlagB = 0; optionsMenu(); } sleep(); } }