Arduino Pong

par **Arkham** Mar 31 Oct - 18:27

Code:: //Arduino Tv framebuffer //Alastair Parker //2007 // Video out voltage levels #define _SYNC 0x00 #define _BLACK 0x01 #define _GRAY 0x02 #define _WHITE 0x03 // dimensions of the screen #define WIDTH 38 #define HEIGHT 14 //number of lines to display #define DISPLAY_LINES 240 // update speed for the main loop of the game #define UPDATE_INTERVAL 1 // positions of the player paddles #define PLAYER_RIGHT_X 35 #define PLAYER_LEFT_X 2 // maximum velocity of the ball #define MAX_VEL 10 // locations of the top and bottom virtual bars #define SCORE_BAR 3 #define BASE_BAR 13 // time to wait while paused #define DONE_WAITING 30 #define SCORE_WAITING 30 // max player life #define MAX_LIFE 6 //positions of player life bars #define PLAYER_LEFT_LIFE 2 #define PLAYER_RIGHT_LIFE 23 // input pins for the player pots #define PLAYER_LEFT_PIN 2 // currently the same pin #define PLAYER_RIGHT_PIN 3 //video pins #define DATA_PIN 9 #define SYNC_PIN 8 // the video frameBuffer byte frameBuffer[WIDTH][HEIGHT]; // loop indices byte index, index2; // pal video line loop byte line; // current drawing line in framebuffer byte newLine; // flag used in wait loop to indicate that player just scored boolean justScored=false; // positions for the left paddle byte playerLeft; byte playerLeftOld=-1; // life for the left player byte playerLeftLife = MAX_LIFE; // positions of the right paddle byte playerRight; byte playerRightOld=-1; // life for the right player byte playerRightLife = MAX_LIFE; // positions and velocity of the ball int ballXVel = -1; int ballYVel = -5; byte ballXPos = 14; byte ballYPos = 7; // loop counters to control the velocity of the ball byte ballXLoop =MAX_VEL; byte ballYLoop =MAX_VEL; // loop counter to for the main loop delay int waitingCount = 0; // start postion of the loading bar byte loadingBar = 2; // if the left player should be updated or the right boolean playerLeftTurn=true; // if we should be waiting for something to happen boolean waiting=true; // if displaying the title boolean showingTitle = true; // value of the counter controlling the freq of updates byte updateCounter=0; // init the variables void initGame() { playerLeftOld=-1; playerLeftLife = MAX_LIFE; playerRightOld=-1; playerRightLife = MAX_LIFE; ballXVel = -1; ballYVel = -5; ballXPos = 14; ballYPos = 7; ballXLoop =MAX_VEL; ballYLoop =MAX_VEL; waitingCount = 0; loadingBar = 2; playerLeftTurn=true; waiting=true; showingTitle = true; justScored=false; updateCounter=0; } // draw a pixel to the buffer void setPixel(byte x,byte y) { frameBuffer[x][y]= _WHITE; } void grayPixel(byte x, byte y) { frameBuffer[x][y]= _GRAY; } // draw a black pixel to the buffer void clearPixel(byte x,byte y) { frameBuffer[x][y]= _BLACK; } // draw a paddle void drawPaddle(byte x,byte y,byte col) { frameBuffer[x][y]= col; frameBuffer[x][y+1]= col; } //draw the title message void drawArduinoPong() { //arduino setPixel(7,3); setPixel(8,3); setPixel(15,3); setPixel(21,3); setPixel(6,4); setPixel(8,4); setPixel(14,4); setPixel(15,4); setPixel(28,4); setPixel(6,5); setPixel(7,5); setPixel(8,5); setPixel(10,5); setPixel(11,5); setPixel(13,5); setPixel(15,5); setPixel(17,5); setPixel(19,5); setPixel(21,5); setPixel(23,5); setPixel(24,5); setPixel(27,5); setPixel(29,5); setPixel(6,6); setPixel(8,6); setPixel(10,6); setPixel(14,6); setPixel(15,6); setPixel(18,6); setPixel(19,6); setPixel(21,6); setPixel(23,6); setPixel(25,6); setPixel(28,6); //pong setPixel(10,8); setPixel(11,8); setPixel(15,8); setPixel(16,8); setPixel(19,8); setPixel(22,8); setPixel(24,8); setPixel(25,8); setPixel(26,8); setPixel(10,9); setPixel(12,9); setPixel(14,9); setPixel(17,9); setPixel(19,9); setPixel(20,9); setPixel(22,9); setPixel(24,9); setPixel(10,10); setPixel(11,10); setPixel(14,10); setPixel(17,10); setPixel(19,10); setPixel(21,10); setPixel(22,10); setPixel(24,10); setPixel(26,10); setPixel(10,11); setPixel(15,11); setPixel(16,11); setPixel(19,11); setPixel(22,11); setPixel(24,11); setPixel(25,11); setPixel(26,11); } // do the main game logic regarding the ball and collisions void updateBall(boolean xEvent) { // if checking the x coords of the ball if(xEvent) { /* TODO have the yvel start 1t 1 */ //check for collision with left player if(ballXPos <PLAYER_LEFT_X+2 & (playerLeft == ballYPos or playerLeft+1 == ballYPos)) { ballXVel = -1 * ballXVel; ballXPos=PLAYER_LEFT_X+1; } //check for collision with right player if(ballXPos > PLAYER_RIGHT_X-2 & (playerRight == ballYPos or playerRight+1 == ballYPos)) { ballXVel = -1 * ballXVel; ballXPos=PLAYER_RIGHT_X-1; } //move the ball in the x direction if(ballXVel < 1) { ballXPos--; } else { ballXPos++; } } //if checking the y coords if(!xEvent) { //check for top of screen hit if( ballYPos <= SCORE_BAR ) { ballYVel = -1 * ballYVel; ballYPos = SCORE_BAR; } //check for bottom of screen hit if( ballYPos>BASE_BAR ) { ballYVel = -1 * ballYVel; ballYPos = BASE_BAR+1; } // move the ball in the y direction if(ballYVel < 1) { ballYPos--; } else { ballYPos++; } } //always check for scoring of points //right player scores if(ballXPos==PLAYER_LEFT_X)//0 { //reset the position of the ball ballXPos = PLAYER_RIGHT_X - 5; ballYPos=7; // change the other players life clearPixel(PLAYER_LEFT_LIFE+2*playerLeftLife-2,SCORE_BAR-1); playerLeftLife--; // indicate that someone scored so the wait doesn't start a new game justScored=true; // indicate that we should wait next loop waiting=true; // check if game is over if(playerLeftLife==0) justScored=false; } //left player scores if(ballXPos==PLAYER_RIGHT_X)//38 { //reset position of ball ballXPos = PLAYER_LEFT_X + 5; ballYPos=7; //update other players score clearPixel(PLAYER_RIGHT_LIFE+2*(MAX_LIFE-playerRightLife)+2,SCORE_BAR-1); playerRightLife--; // indicate that someone scored so the wain doesn't start a new game justScored=true; // indicate that we should wait next loop waiting=true; // check for game over if(playerRightLife==0) justScored=false; } } // draw the player life bars void initScreen() { for(index=1;index<=MAX_LIFE;++index) { grayPixel(index*2,SCORE_BAR-1); grayPixel(index*2+PLAYER_RIGHT_LIFE,SCORE_BAR-1); } } // draw the ball void drawBall(byte col) { frameBuffer[ballXPos][ballYPos]=col; } // clear the screen void clearScreen() { for (index = 0; index < WIDTH; index++) for (index2=0;index2<=HEIGHT;++index2) { frameBuffer[index][index2] = _BLACK; } } // the setup routine void setup() { cli(); pinMode (SYNC_PIN, OUTPUT); pinMode (DATA_PIN, OUTPUT); digitalWrite (SYNC_PIN, HIGH); digitalWrite (DATA_PIN, HIGH); clearScreen(); drawArduinoPong(); } void loop() { // iterate over the lines on the tv for ( line =0;line< DISPLAY_LINES;++line) { // HSync // front porch (1.5 us) PORTB = _BLACK; delayMicroseconds(1.5); //sync (4.7 us) PORTB = _SYNC; delayMicroseconds(4.7); // breezeway (.6us) + burst (2.5us) + colour back borch (1.6 us) PORTB = _BLACK; delayMicroseconds(0.6+2.5+1.6); //calculate which line to draw to newLine = line >>4; delayMicroseconds(1); //display the array for this line // a loop would have been smaller, but it messes the timing up PORTB = frameBuffer[0][newLine]; delayMicroseconds(1); PORTB = frameBuffer[1][newLine]; delayMicroseconds(1); PORTB = frameBuffer[2][newLine]; delayMicroseconds(1); PORTB = frameBuffer[3][newLine]; delayMicroseconds(1); PORTB = frameBuffer[4][newLine]; delayMicroseconds(1); PORTB = frameBuffer[5][newLine]; delayMicroseconds(1); PORTB = frameBuffer[6][newLine]; delayMicroseconds(1); PORTB = frameBuffer[7][newLine]; delayMicroseconds(1); PORTB = frameBuffer[8][newLine]; delayMicroseconds(1); PORTB = frameBuffer[9][newLine]; delayMicroseconds(1); PORTB = frameBuffer[10][newLine]; delayMicroseconds(1); PORTB = frameBuffer[11][newLine]; delayMicroseconds(1); PORTB = frameBuffer[12][newLine]; delayMicroseconds(1); PORTB = frameBuffer[13][newLine]; delayMicroseconds(1); PORTB = frameBuffer[14][newLine]; delayMicroseconds(1); PORTB = frameBuffer[15][newLine]; delayMicroseconds(1); PORTB = frameBuffer[16][newLine]; delayMicroseconds(1); PORTB = frameBuffer[17][newLine]; delayMicroseconds(1); PORTB = frameBuffer[18][newLine]; delayMicroseconds(1); PORTB = frameBuffer[19][newLine]; delayMicroseconds(1); PORTB = frameBuffer[20][newLine]; delayMicroseconds(1); PORTB = frameBuffer[21][newLine]; delayMicroseconds(1); PORTB = frameBuffer[22][newLine]; delayMicroseconds(1); PORTB = frameBuffer[23][newLine]; delayMicroseconds(1); PORTB = frameBuffer[24][newLine]; delayMicroseconds(1); PORTB = frameBuffer[25][newLine]; delayMicroseconds(1); PORTB = frameBuffer[26][newLine]; delayMicroseconds(1); PORTB = frameBuffer[27][newLine]; delayMicroseconds(1); PORTB = frameBuffer[28][newLine]; delayMicroseconds(1); PORTB = frameBuffer[29][newLine]; delayMicroseconds(1); PORTB = frameBuffer[30][newLine]; delayMicroseconds(1); PORTB = frameBuffer[31][newLine]; delayMicroseconds(1); PORTB = frameBuffer[32][newLine]; delayMicroseconds(1); PORTB = frameBuffer[33][newLine]; delayMicroseconds(1); PORTB = frameBuffer[34][newLine]; delayMicroseconds(1); PORTB = frameBuffer[35][newLine]; delayMicroseconds(1); // klugdge to correct timings PORTB = frameBuffer[36][newLine]; PORTB=PORTB; PORTB=PORTB; PORTB=PORTB; delayMicroseconds(3); } //vsync PORTB = _SYNC; // if delaying for some reason if(waiting) { // increment the waiting counter waitingCount++; // if waiting is over for a new game if(waitingCount==DONE_WAITING & !justScored) { waitingCount=0; // if on title screen if(showingTitle) { // draw the loading bar grayPixel(loadingBar,BASE_BAR); loadingBar+=2; // done loading if (loadingBar > 37) { showingTitle=false; clearScreen(); initGame(); initScreen(); waiting=false; } } } // waiting because someone scored if(waitingCount==SCORE_WAITING & justScored) { justScored=false; waitingCount=0; waiting=false; } // wait for the remainder of the sync period delayMicroseconds(305); } // not waiting else { // increment the update delay counter updateCounter++; if( updateCounter >= UPDATE_INTERVAL) { //player movement if(playerLeftTurn) { drawPaddle(PLAYER_LEFT_X,playerLeftOld,_BLACK); playerLeft = analogRead(PLAYER_LEFT_PIN)>>6; if(playerLeft<SCORE_BAR) playerLeft=SCORE_BAR; if(playerLeft>BASE_BAR) playerLeft=BASE_BAR; drawPaddle(PLAYER_LEFT_X,playerLeft,_WHITE); playerLeftOld=playerLeft; playerLeftTurn=false; } else { drawPaddle(PLAYER_RIGHT_X,playerRightOld,_BLACK); playerRight = analogRead(PLAYER_RIGHT_PIN)>>6; if(playerRight<SCORE_BAR) playerRight=SCORE_BAR; if(playerRight>BASE_BAR) playerRight=BASE_BAR; drawPaddle(PLAYER_RIGHT_X,playerRight,_WHITE); playerRightOld=playerRight; playerLeftTurn=true; } // remainder of sync period delayMicroseconds(10); updateCounter=0; } else // remainder of sync period delayMicroseconds(250); // perform ball x velocity delay ballXLoop--; if(ballXLoop <= abs(ballXVel) and ballXVel != 0) { //ball movement; drawBall(_BLACK); updateBall(true); ballXLoop=MAX_VEL; } // perform ball y velocity delay ballYLoop--; if(ballYLoop <= abs(ballYVel) and ballYVel != 0) { //ball movement; drawBall(_BLACK); updateBall(false); ballYLoop=MAX_VEL; } // draw new ball drawBall(_GRAY); } }