i made a version with the use of three buttons that can be made from some foil; check the playground for more info; you will need this library:
(only one control for both paddles; need to upgrade the code if you want two independent controls)
#include <TVout.h>
#include <CapSense.h>
#define PADDLE_HEIGHT 12
#define PADDLE_WIDTH 2
#define RIGHT_PADDLE_X (TV.horz_res()-4)
#define LEFT_PADDLE_X 2
#define IN_GAME 0 //in game state
#define IN_MENU 1 //in menu state
#define GAME_OVER 2 //game over state
#define LEFT_SCORE_X (TV.horz_res()/2-15)
#define RIGHT_SCORE_X (TV.horz_res()/2+10)
#define SCORE_Y 4
#define MAX_Y_VELOCITY 3
#define PLAY_TO 7
#define LEFT 0
#define RIGHT 1
CapSense rightButton = CapSense(5,4); // 10M resistor between pins 4 & 2, pin 2 is sensor pin, add a wire and or foil if desired
CapSense leftButton = CapSense(5,3); // 10M resistor between pins 4 & 6, pin 6 is sensor pin, add a wire and or foil
CapSense startButton = CapSense(5,2); // 10M resistor between pins 4 & 8, pin 8 is sensor pin, add a wire and or foil
TVout TV;
unsigned char x,y;
boolean buttonStatus = false;
int wheelOnePosition = 0;
int wheelTwoPosition = 0;
int rightPaddleY = 0;
int leftPaddleY = 0;
unsigned char ballX = 0;
unsigned char ballY = 0;
char ballVolX = 1;
char ballVolY = 1;
int leftPlayerScore = 0;
int rightPlayerScore = 0;
int frame = 0;
int state = IN_MENU;
int basicInput = 50;
void processInputs() {
long total1 = startButton.capSense(30);
if(total1 > basicInput) {
buttonStatus = true;
} else {
buttonStatus = false;
}
long total2 = leftButton.capSense(30);
long total3 = rightButton.capSense(30);
if(total2 > basicInput) {
wheelOnePosition = wheelOnePosition + 3;
wheelTwoPosition = wheelTwoPosition + 3;
}
if(total3 > basicInput) {
wheelOnePosition = wheelOnePosition - 3;
wheelTwoPosition = wheelTwoPosition - 3;
}
leftPaddleY = wheelOnePosition;
if(leftPaddleY < 0) {
wheelOnePosition = leftPaddleY = 0;
}
if(leftPaddleY > TV.vert_res()-PADDLE_HEIGHT) {
wheelOnePosition = leftPaddleY = TV.vert_res()-PADDLE_HEIGHT;
}
rightPaddleY = wheelTwoPosition;
if(rightPaddleY < 0) {
wheelTwoPosition = rightPaddleY = 0;
}
if(rightPaddleY > TV.vert_res()-PADDLE_HEIGHT) {
wheelTwoPosition = rightPaddleY = TV.vert_res()-PADDLE_HEIGHT;
}
Serial.print(total1); // print sensor output 1
Serial.print("\t");
Serial.print(total2); // print sensor output 2
Serial.print("\t");
Serial.println(total3); // print sensor output 3
}
void drawGameScreen() {
TV.clear_screen();
//draw right paddle
//rightPaddleY = ((wheelOnePosition / 8) * (TV.vert_res()-PADDLE_HEIGHT))/ 128;
x = RIGHT_PADDLE_X;
for(int i=0; i<PADDLE_WIDTH; i++) {
TV.draw_line(x+i,rightPaddleY,x+i,rightPaddleY+PADDLE_HEIGHT,1);
}
//draw left paddle
// leftPaddleY = ((wheelTwoPosition / 8) * (TV.vert_res()-PADDLE_HEIGHT))/ 128;
x = LEFT_PADDLE_X;
for(int i=0; i<PADDLE_WIDTH; i++) {
TV.draw_line(x+i,leftPaddleY,x+i,leftPaddleY+PADDLE_HEIGHT,1);
}
//draw score
TV.print_char(LEFT_SCORE_X,SCORE_Y,'0'+leftPlayerScore);
TV.print_char(RIGHT_SCORE_X,SCORE_Y,'0'+rightPlayerScore);
//draw net
for(int i=1; i<TV.vert_res() - 4; i+=6) {
TV.draw_line(TV.horz_res()/2,i,TV.horz_res()/2,i+3, 1);
}
//draw ball
TV.set_pixel(ballX, ballY, 2);
}
//player == LEFT or RIGHT
void playerScored(byte player) {
if(player == LEFT) leftPlayerScore++;
if(player == RIGHT) rightPlayerScore++;
//check for win
if(leftPlayerScore == PLAY_TO || rightPlayerScore == PLAY_TO) {
state = GAME_OVER;
}
ballVolX = -ballVolX;
}
void drawMenu() {
x = 0;
y = 0;
char volX = 1;
char volY = 1;
TV.clear_screen();
TV.select_font(_8X8);
TV.print_str(10, 5, "Arduino Pong");
TV.select_font(_5X7);
TV.print_str(22, 35, "Press Button");
TV.print_str(50, 45, "To Start");
delay(1000);
while(!buttonStatus) {
processInputs();
TV.delay_frame(3);
if(x + volX < 1 || x + volX > TV.horz_res() - 1) volX = -volX;
if(y + volY < 1 || y + volY > TV.vert_res() - 1) volY = -volY;
if(TV.get_pixel(x + volX, y + volY)) {
TV.set_pixel(x + volX, y + volY, 0);
if(TV.get_pixel(x + volX, y - volY) == 0) {
volY = -volY;
}
else if(TV.get_pixel(x - volX, y + volY) == 0) {
volX = -volX;
}
else {
volX = -volX;
volY = -volY;
}
}
TV.set_pixel(x, y, 0);
x += volX;
y += volY;
TV.set_pixel(x, y, 1);
}
TV.select_font(_5X7);
state = IN_GAME;
}
void setup() {
Serial.begin(9600);
x=0;
y=0;
TV.start_render(_PAL);//for devices with only 1k sram(m168) use TV.begin(_NTSC,128,56)
ballX = TV.horz_res() / 2;
ballY = TV.vert_res() / 2;
}
void loop() {
processInputs();
if(state == IN_MENU) {
drawMenu();
}
if(state == IN_GAME) {
if(frame % 3 == 0) { //every third frame
ballX += ballVolX;
ballY += ballVolY;
if(ballY <= 1 || ballY >= TV.vert_res()-1) ballVolY = -ballVolY;
if(ballVolX < 0 && ballX == LEFT_PADDLE_X+PADDLE_WIDTH-1 && ballY >= leftPaddleY && ballY <= leftPaddleY + PADDLE_HEIGHT) {
ballVolX = -ballVolX;
ballVolY += 2 * ((ballY - leftPaddleY) - (PADDLE_HEIGHT / 2)) / (PADDLE_HEIGHT / 2);
}
if(ballVolX > 0 && ballX == RIGHT_PADDLE_X && ballY >= rightPaddleY && ballY <= rightPaddleY + PADDLE_HEIGHT) {
ballVolX = -ballVolX;
ballVolY += 2 * ((ballY - rightPaddleY) - (PADDLE_HEIGHT / 2)) / (PADDLE_HEIGHT / 2);
}
//limit vertical speed
if(ballVolY > MAX_Y_VELOCITY) ballVolY = MAX_Y_VELOCITY;
if(ballVolY < -MAX_Y_VELOCITY) ballVolY = -MAX_Y_VELOCITY;
if(ballX <= 1) {
playerScored(RIGHT);
}
if(ballX >= TV.horz_res() - 1) {
playerScored(LEFT);
}
}
if(buttonStatus) Serial.println((int)ballVolX);
drawGameScreen();
}
if(state == GAME_OVER) {
drawGameScreen();
TV.select_font(_8X8);
TV.print_str(29,25,"GAME");
TV.print_str(68,25,"OVER");
while(!buttonStatus) {
processInputs();
delay(50);
}
TV.select_font(_5X7); //reset the font
//reset the scores
leftPlayerScore = 0;
rightPlayerScore = 0;
state = IN_MENU;
}
TV.delay_frame(1);
if(++frame == 60) frame = 0; //increment and/or reset frame counter
}
