[136] | 1 | /*
|
---|
| 2 |
|
---|
| 3 | TFT Pong
|
---|
| 4 |
|
---|
| 5 | This example for the Arduino screen reads the values
|
---|
| 6 | of 2 potentiometers to move a rectangular platform
|
---|
| 7 | on the x and y axes. The platform can intersect
|
---|
| 8 | with a ball causing it to bounce.
|
---|
| 9 |
|
---|
| 10 | This example code is in the public domain.
|
---|
| 11 |
|
---|
| 12 | Created by Tom Igoe December 2012
|
---|
| 13 | Modified 15 April 2013 by Scott Fitzgerald
|
---|
| 14 |
|
---|
| 15 | http://arduino.cc/en/Tutorial/TFTPong
|
---|
| 16 |
|
---|
| 17 | */
|
---|
| 18 |
|
---|
| 19 | #include <TFT.h> // Arduino LCD library
|
---|
| 20 | #include <SPI.h>
|
---|
| 21 |
|
---|
| 22 | // pin definition for the Uno
|
---|
| 23 | #define cs 10
|
---|
| 24 | #define dc 9
|
---|
| 25 | #define rst 8
|
---|
| 26 |
|
---|
| 27 | // pin definition for the Leonardo
|
---|
| 28 | // #define cs 7
|
---|
| 29 | // #define dc 0
|
---|
| 30 | // #define rst 1
|
---|
| 31 |
|
---|
| 32 | TFT TFTscreen = TFT(cs, dc, rst);
|
---|
| 33 |
|
---|
| 34 | // variables for the position of the ball and paddle
|
---|
| 35 | int paddleX = 0;
|
---|
| 36 | int paddleY = 0;
|
---|
| 37 | int oldPaddleX, oldPaddleY;
|
---|
| 38 | int ballDirectionX = 1;
|
---|
| 39 | int ballDirectionY = 1;
|
---|
| 40 |
|
---|
| 41 | int ballSpeed = 10; // lower numbers are faster
|
---|
| 42 |
|
---|
| 43 | int ballX, ballY, oldBallX, oldBallY;
|
---|
| 44 |
|
---|
| 45 | void setup() {
|
---|
| 46 | // initialize the display
|
---|
| 47 | TFTscreen.begin();
|
---|
| 48 | // black background
|
---|
| 49 | TFTscreen.background(0, 0, 0);
|
---|
| 50 | }
|
---|
| 51 |
|
---|
| 52 | void loop() {
|
---|
| 53 |
|
---|
| 54 | // save the width and height of the screen
|
---|
| 55 | int myWidth = TFTscreen.width();
|
---|
| 56 | int myHeight = TFTscreen.height();
|
---|
| 57 |
|
---|
| 58 | // map the paddle's location to the position of the potentiometers
|
---|
| 59 | paddleX = map(analogRead(A0), 512, -512, 0, myWidth) - 20 / 2;
|
---|
| 60 | paddleY = map(analogRead(A1), 512, -512, 0, myHeight) - 5 / 2;
|
---|
| 61 |
|
---|
| 62 | // set the fill color to black and erase the previous
|
---|
| 63 | // position of the paddle if different from present
|
---|
| 64 | TFTscreen.fill(0, 0, 0);
|
---|
| 65 |
|
---|
| 66 | if (oldPaddleX != paddleX || oldPaddleY != paddleY) {
|
---|
| 67 | TFTscreen.rect(oldPaddleX, oldPaddleY, 20, 5);
|
---|
| 68 | }
|
---|
| 69 |
|
---|
| 70 | // draw the paddle on screen, save the current position
|
---|
| 71 | // as the previous.
|
---|
| 72 | TFTscreen.fill(255, 255, 255);
|
---|
| 73 |
|
---|
| 74 | TFTscreen.rect(paddleX, paddleY, 20, 5);
|
---|
| 75 | oldPaddleX = paddleX;
|
---|
| 76 | oldPaddleY = paddleY;
|
---|
| 77 |
|
---|
| 78 | // update the ball's position and draw it on screen
|
---|
| 79 | if (millis() % ballSpeed < 2) {
|
---|
| 80 | moveBall();
|
---|
| 81 | }
|
---|
| 82 | }
|
---|
| 83 |
|
---|
| 84 | // this function determines the ball's position on screen
|
---|
| 85 | void moveBall() {
|
---|
| 86 | // if the ball goes offscreen, reverse the direction:
|
---|
| 87 | if (ballX > TFTscreen.width() || ballX < 0) {
|
---|
| 88 | ballDirectionX = -ballDirectionX;
|
---|
| 89 | }
|
---|
| 90 |
|
---|
| 91 | if (ballY > TFTscreen.height() || ballY < 0) {
|
---|
| 92 | ballDirectionY = -ballDirectionY;
|
---|
| 93 | }
|
---|
| 94 |
|
---|
| 95 | // check if the ball and the paddle occupy the same space on screen
|
---|
| 96 | if (inPaddle(ballX, ballY, paddleX, paddleY, 20, 5)) {
|
---|
| 97 | ballDirectionX = -ballDirectionX;
|
---|
| 98 | ballDirectionY = -ballDirectionY;
|
---|
| 99 | }
|
---|
| 100 |
|
---|
| 101 | // update the ball's position
|
---|
| 102 | ballX += ballDirectionX;
|
---|
| 103 | ballY += ballDirectionY;
|
---|
| 104 |
|
---|
| 105 | // erase the ball's previous position
|
---|
| 106 | TFTscreen.fill(0, 0, 0);
|
---|
| 107 |
|
---|
| 108 | if (oldBallX != ballX || oldBallY != ballY) {
|
---|
| 109 | TFTscreen.rect(oldBallX, oldBallY, 5, 5);
|
---|
| 110 | }
|
---|
| 111 |
|
---|
| 112 |
|
---|
| 113 | // draw the ball's current position
|
---|
| 114 | TFTscreen.fill(255, 255, 255);
|
---|
| 115 | TFTscreen.rect(ballX, ballY, 5, 5);
|
---|
| 116 |
|
---|
| 117 | oldBallX = ballX;
|
---|
| 118 | oldBallY = ballY;
|
---|
| 119 |
|
---|
| 120 | }
|
---|
| 121 |
|
---|
| 122 | // this function checks the position of the ball
|
---|
| 123 | // to see if it intersects with the paddle
|
---|
| 124 | boolean inPaddle(int x, int y, int rectX, int rectY, int rectWidth, int rectHeight) {
|
---|
| 125 | boolean result = false;
|
---|
| 126 |
|
---|
| 127 | if ((x >= rectX && x <= (rectX + rectWidth)) &&
|
---|
| 128 | (y >= rectY && y <= (rectY + rectHeight))) {
|
---|
| 129 | result = true;
|
---|
| 130 | }
|
---|
| 131 |
|
---|
| 132 | return result;
|
---|
| 133 | }
|
---|
| 134 |
|
---|
| 135 |
|
---|