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
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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;  
+}
+
+