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authorCristian Maglie <c.maglie@bug.st>2013-06-01 23:16:02 +0200
committerCristian Maglie <c.maglie@bug.st>2013-06-01 23:16:02 +0200
commit177ad96f866714a4962be57f69cd3d5a6334cde1 (patch)
tree1072239986340d6a239adac924eddf2e1d1ca566 /libraries/TFT/examples/Arduino/TFTPong
parent6cff36ac5e85c74bcb45cc53491ad69d64520b36 (diff)
parentd90fcca5839d13d57ed527d4009b78d22dafbde7 (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.ino135
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
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+++ b/libraries/TFT/examples/Arduino/TFTPong/TFTPong.ino
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+/*
+
+ 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;
+}
+
+