main.cpp

00001 #include "mbed.h"
00002 #include "MobileLCD.h"
00003 MobileLCD lcd(p5, p6, p7, p8, p9);
00004 Serial pc(USBTX, USBRX); // tx, rx
00005 
00006 // ********************************************************************************
00007 // * Startup variables
00008 // ********************************************************************************
00009 //Ball speed
00010 int speedh;
00011 int speedv;
00012 
00013 //Ball position
00014 int ballx = 5;
00015 int bally = 65;
00016 
00017 //Score
00018 int scorel;
00019 int scorer;
00020 
00021 //Paddle size
00022 const int paddle = 30;
00023 
00024 //Win level
00025 const int winner = 3;
00026 
00027 //Paddle position
00028 int lefty = 53;
00029 int righty = 50;
00030 
00031 //Joystick position & input variables
00032 AnalogIn inl(p20);
00033 AnalogIn inr(p19);
00034 float joystickl;
00035 float joystickr;
00036 
00037 // Number of players
00038 int players = 0;
00039 
00040 // Loop until winner declared
00041 int playing = 1;
00042 
00043 const int ballcolour = 0xFFFFFF;
00044 
00045 // ********************************************************************************
00046 
00047 // ********************************************************************************
00048 // * Display score, wait & wipe
00049 // ********************************************************************************
00050 void displayScore( int left, int right ) {
00051     lcd.locate ( 3, 2 ) ;
00052     lcd.printf( "%i       %i ",left,right );
00053     //Check if we have a winner
00054     if ( left == winner) {
00055         lcd.locate( 3,4 );
00056         lcd.printf( "Left won!" );
00057         playing = 0;
00058         lcd.fill(0, 0, 5, 130, 0x0000FF);    //left
00059         lcd.fill(126, 0, 4, 130, 0x000FFF); //right
00060         wait(2);
00061     }
00062     if ( right == winner) {
00063         lcd.locate( 3,4 );
00064         lcd.printf( "Right won!" );
00065         playing = 0;
00066         lcd.fill(0, 0, 5, 130, 0x0000FF);    //left
00067         lcd.fill(126, 0, 4, 130, 0x000FFF); //right
00068         wait(2);
00069     }
00070     wait( 2 );
00071     lcd.fill(13, 0, 110, 25, 0x0000FF);
00072 }
00073 // ********************************************************************************
00074 
00075 
00076 // ********************************************************************************
00077 // * Setup screen to start
00078 // ********************************************************************************
00079 void startup( void ) {
00080     //speed
00081     speedh = 1;
00082     speedv = -1;
00083 
00084     //Score
00085     scorel = 0;
00086     scorer = 0;
00087 
00088     // *** Screen ***
00089     lcd.background(0x0000FF);
00090     lcd.cls();
00091     lcd.fill(1, lefty, 4, paddle, 0x00FF00);    //left
00092     lcd.fill(126, righty, 4, paddle, 0x00FF00); //right
00093     lcd.fill(ballx, bally, 4, 4, ballcolour); //ball
00094     displayScore(scorel,scorer);
00095 
00096 
00097     // *** Calibrate analog in ***
00098     // * Start game at higheest voltage level for both inpout pins
00099 
00100 }
00101 // ********************************************************************************
00102 
00103 
00104 // ********************************************************************************
00105 //  Move the Ball
00106 // ********************************************************************************
00107 void moveBall ( void ) {
00108 
00109     int retVal =0;
00110 
00111     //Remove ball from screen
00112     lcd.fill( ballx,bally,4,4,0x0000FF );
00113 
00114     // Normal x movement
00115     if ( (ballx + speedh > 4) && (ballx + speedh < 122)) {
00116         ballx = ballx + speedh;
00117 
00118     } else {
00119         //Bounce off right paddle
00120         if (ballx+speedh >= 122) {
00121             if ( (bally>righty)&&(bally<righty+paddle) ) {
00122                 ballx=122;
00123                 speedh=speedh*(-1);
00124                 ballx=ballx+speedh;
00125             } else {
00126                 //Left scores
00127                 scorel = scorel + 1;
00128                 displayScore( scorel,scorer );
00129                 //Ball speed
00130                 speedh = -1;
00131                 speedv = +1;
00132 
00133                 //Ball position
00134                 ballx = 122;
00135                 bally = righty+(paddle/2);
00136             }
00137         }
00138         //Bounce off left paddle
00139         if (ballx+speedh <=4) {
00140 
00141             if ( (bally>lefty)&&(bally<lefty+paddle) ) {
00142                 ballx=4;
00143                 speedh=speedh*(-1);
00144                 ballx=ballx+speedh;
00145             } else { //Right scores
00146                 scorer = scorer + 1;
00147                 displayScore( scorel,scorer );
00148                 //Ball speed
00149                 speedh = 1;
00150                 speedv = -1;
00151 
00152                 //Ball position
00153                 ballx = 5;
00154                 bally = lefty+(paddle/2);
00155             }
00156         }
00157     } //else
00158 
00159 
00160     // Normal y movement
00161     if ( (bally + speedv > 0) && (bally + speedv < 126)) {
00162         bally = bally + speedv;
00163 
00164     } else {
00165         // Bounce bottom
00166         if ( bally + speedv >= 126 ) {
00167             bally = 125;
00168             speedv = speedv*(-1);
00169             bally = bally + speedv;
00170         }
00171         // Bounce top
00172         if (bally + speedv <= 0 ) {
00173             bally = 0;
00174             speedv = speedv*(-1);
00175             bally = bally + speedv;
00176 
00177         }
00178     } // else
00179 
00180     // Draw ball if it is to be moved
00181     if ( retVal == 0 ) {
00182         lcd.fill(ballx, bally, 4, 4, ballcolour); //ball
00183     }
00184 
00185 }
00186 
00187 // ********************************************************************************
00188 //  Move the Paddles
00189 // ********************************************************************************
00190 
00191 void movePaddles( void ) {
00192 
00193     //*** Left ***
00194 
00195     lcd.fill(1, lefty, 4, paddle, 0x0000FF);    //Clear paddle
00196     //Read paddle if 2 player
00197     if ( players == 2 ) {
00198         joystickl = inl.read();
00199         joystickl = joystickl * 100;
00200         joystickl = 53 - joystickl;
00201         lefty = joystickl*(130/47);
00202     } else {
00203         if ( lefty>bally ) {
00204             lefty--;
00205         }
00206         if ( lefty<bally ) {
00207             lefty++;
00208         }
00209     }
00210     //Auto move paddle if 1 player
00211 
00212 
00213     if ( lefty <0 ) {
00214         lefty = 0;
00215     }
00216     if ( lefty > (130-paddle) ) {
00217         lefty=130-paddle;
00218     }
00219 
00220     lcd.fill(1, lefty, 4, paddle, 0x00FF00);    //Draw paddle
00221 
00222     //*** Right ***
00223     lcd.fill(126, righty, 4, paddle, 0x0000FF);    //Clear paddle
00224     joystickr = inr.read();
00225     joystickr = joystickr * 100;
00226     joystickr = 53 - joystickr;
00227     righty = joystickr*(130/47);
00228     if ( righty <0 ) {
00229         righty = 0;
00230     }
00231     if ( righty > (130-paddle) ) {
00232         righty=130-paddle;
00233     }
00234     lcd.fill(126, righty, 4, paddle, 0x00FF00);     //Draw paddle
00235 }
00236 // ********************************************************************************
00237 
00238 // ********************************************************************************
00239 //  Main menu
00240 // ********************************************************************************
00241 void menu( void ) {
00242     //Read right joystick level, change will start game
00243     joystickr = inr.read();
00244     joystickr = joystickr * 100;
00245     joystickr = 53 - joystickr;
00246     float startr = joystickr*(130/47);
00247 
00248     //Display menu options, control with left joystick
00249     lcd.background(0x0000FF);
00250     lcd.cls();
00251     lcd.locate( 5,3 );
00252     lcd.printf( "mPong" );
00253     lcd.locate( 1,12 );
00254     lcd.printf( "(left=choose;");
00255     lcd.locate( 1,13 );
00256     lcd.printf( " right=start)" );
00257     int choose = 1;
00258     while ( choose==1 ) {
00259 
00260         //*** Left ***
00261         joystickl = inl.read();
00262         joystickl = joystickl * 100;
00263         joystickl = 53 - joystickl;
00264         lefty = joystickl*(130/47);
00265 
00266         if ( lefty < 44 ) {
00267             lcd.background( 0x550000 );
00268             lcd.locate (1,6);
00269             lcd.printf( "Single Player");
00270             lcd.background( 0x0000FF );
00271             lcd.locate (1,7);
00272             lcd.printf( "Double Player");
00273             players = 1;
00274         } else {
00275             lcd.background(  0x0000FF );
00276             lcd.locate (1,6);
00277             lcd.printf( "Single Player");
00278             lcd.background( 0x550000 );
00279             lcd.locate (1,7);
00280             lcd.printf( "Double Player");
00281             players = 2;
00282         }
00283         wait(0.1);
00284 
00285         //Read right joystick level, change will start game
00286         joystickr = inr.read();
00287         joystickr = joystickr * 100;
00288         joystickr = 53 - joystickr;
00289         joystickr = joystickr*(130/47);
00290 
00291         if ( (startr - joystickr) > 10 || (startr - joystickr ) < -10 ) {
00292             // Start game
00293             choose = 0;
00294             //Nice screen clear
00295             for ( choose=0; choose <65; choose++ ) {
00296                 lcd.fill(65-choose, 0, 1, 130, 0x0000FF);
00297                 lcd.fill(65+choose, 0, 1, 130, 0x0000FF);
00298                 wait(0.02);
00299                 playing=1;
00300             }
00301         }
00302 
00303     }
00304 }
00305 // ********************************************************************************
00306 int main() {
00307     while ( 1 ) {
00308 
00309         menu();
00310         startup();
00311 
00312         // Main Loop
00313         while (playing == 1) {
00314             moveBall();
00315             movePaddles();
00316             wait(0.02);
00317         } // while playing
00318 
00319     } // while 1
00320 }