diff options
author | Cristian Maglie <c.maglie@bug.st> | 2013-06-01 23:16:02 +0200 |
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committer | Cristian Maglie <c.maglie@bug.st> | 2013-06-01 23:16:02 +0200 |
commit | 177ad96f866714a4962be57f69cd3d5a6334cde1 (patch) | |
tree | 1072239986340d6a239adac924eddf2e1d1ca566 /libraries/TFT/examples/Arduino/TFTPong | |
parent | 6cff36ac5e85c74bcb45cc53491ad69d64520b36 (diff) | |
parent | d90fcca5839d13d57ed527d4009b78d22dafbde7 (diff) |
Merge branch 'merge-1.0.5' into ide-1.5.x-discovery
Diffstat (limited to 'libraries/TFT/examples/Arduino/TFTPong')
-rw-r--r-- | libraries/TFT/examples/Arduino/TFTPong/TFTPong.ino | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/libraries/TFT/examples/Arduino/TFTPong/TFTPong.ino b/libraries/TFT/examples/Arduino/TFTPong/TFTPong.ino new file mode 100644 index 0000000..02ea11c --- /dev/null +++ b/libraries/TFT/examples/Arduino/TFTPong/TFTPong.ino @@ -0,0 +1,135 @@ +/* + + TFT Pong + + This example for the Arduino screen reads the values + of 2 potentiometers to move a rectangular platform + on the x and y axes. The platform can intersect + with a ball causing it to bounce. + + This example code is in the public domain. + + Created by Tom Igoe December 2012 + Modified 15 April 2013 by Scott Fitzgerald + + http://arduino.cc/en/Tutorial/TFTPong + + */ + +#include <TFT.h> // Arduino LCD library +#include <SPI.h> + +// pin definition for the Uno +#define cs 10 +#define dc 9 +#define rst 8 + +// pin definition for the Leonardo +// #define cs 7 +// #define dc 0 +// #define rst 1 + +TFT TFTscreen = TFT(cs, dc, rst); + +// variables for the position of the ball and paddle +int paddleX = 0; +int paddleY = 0; +int oldPaddleX, oldPaddleY; +int ballDirectionX = 1; +int ballDirectionY = 1; + +int ballSpeed = 10; // lower numbers are faster + +int ballX, ballY, oldBallX, oldBallY; + +void setup() { + // initialize the display + TFTscreen.begin(); + // black background + TFTscreen.background(0,0,0); +} + +void loop() { + + // save the width and height of the screen + int myWidth = TFTscreen.width(); + int myHeight = TFTscreen.height(); + + // map the paddle's location to the position of the potentiometers + paddleX = map(analogRead(A0), 512, -512, 0, myWidth) - 20/2; + paddleY = map(analogRead(A1), 512, -512, 0, myHeight) - 5/2; + + // set the fill color to black and erase the previous + // position of the paddle if different from present + TFTscreen.fill(0,0,0); + + if (oldPaddleX != paddleX || oldPaddleY != paddleY) { + TFTscreen.rect(oldPaddleX, oldPaddleY, 20, 5); + } + + // draw the paddle on screen, save the current position + // as the previous. + TFTscreen.fill(255,255,255); + + TFTscreen.rect(paddleX, paddleY, 20, 5); + oldPaddleX = paddleX; + oldPaddleY = paddleY; + + // update the ball's position and draw it on screen + if (millis() % ballSpeed < 2) { + moveBall(); + } +} + +// this function determines the ball's position on screen +void moveBall() { + // if the ball goes offscreen, reverse the direction: + if (ballX > TFTscreen.width() || ballX < 0) { + ballDirectionX = -ballDirectionX; + } + + if (ballY > TFTscreen.height() || ballY < 0) { + ballDirectionY = -ballDirectionY; + } + + // check if the ball and the paddle occupy the same space on screen + if (inPaddle(ballX, ballY, paddleX, paddleY, 20, 5)) { + ballDirectionX = -ballDirectionX; + ballDirectionY = -ballDirectionY; + } + + // update the ball's position + ballX += ballDirectionX; + ballY += ballDirectionY; + +// erase the ball's previous position + TFTscreen.fill(0,0,0); + + if (oldBallX != ballX || oldBallY != ballY) { + TFTscreen.rect(oldBallX, oldBallY, 5, 5); + } + + + // draw the ball's current position + TFTscreen.fill(255,255,255); + TFTscreen.rect(ballX, ballY, 5, 5); + + oldBallX = ballX; + oldBallY = ballY; + +} + +// this function checks the position of the ball +// to see if it intersects with the paddle +boolean inPaddle(int x, int y, int rectX, int rectY, int rectWidth, int rectHeight) { + boolean result = false; + + if ((x >= rectX && x <= (rectX + rectWidth)) && + (y >= rectY && y <= (rectY + rectHeight))) { + result = true; + } + +return result; +} + + |