Revision 1:971e721f6ef2, committed 2019-04-15

Comitter:

hudakz

Date:

Mon Apr 15 06:02:55 2019 +0000

Parent:

0:887dd664eca0

Commit message:

Simple pong game updated.

Changed in this revision

--- a/Ball.cpp	Thu Apr 11 20:18:15 2019 +0000
+++ b/Ball.cpp	Mon Apr 15 06:02:55 2019 +0000
@@ -8,9 +8,31 @@
  * @retval
  */
 Ball::Ball(int s /*= 8*/, float v /*= 8*/, uint16_t clr /*= TFT_WHITE*/ ) :
-    size(s), velocity(v), gameOver(true), color(clr), xPos(320 / 2), yPos(240 / 2), xDir(-1), yDir(1)
+    size(s),
+    velocity(v),
+    color(clr),
+    xPos(320 / 2),
+    yPos(240 / 2),
+    xPosOld(320 / 2),
+    yPosOld(240 / 2),
+    xDir(-1),
+    yDir(1)
+{ }
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void Ball::home()
 {
-    timeout.attach(callback(this, &Ball::newGame), 2);
+    xPos = 320 / 2;
+    yPos = 240 / 2;
+    xPosOld = xPos;
+    yPosOld = yPos;
+    xDir = -1;
+    yDir = 1;
 }
 
 /**
@@ -21,9 +43,8 @@
  */
 bool Ball::move(Racket* rkt)
 {
-    if (gameOver)
-        return true;
-
+    xPosOld = xPos;
+    yPosOld = yPos;
     xPos += xDir * velocity;
     yPos += yDir * velocity;
 
@@ -45,9 +66,7 @@
         yPos = 240 / 2;
         xDir = -1;
         yDir = 1;
-        gameOver = true;
-        tft_text(320/2 - 35, 240 / 2, "GAME OVER", TFT_WHITE, TFT_BLACK);
-        timeout.attach(callback(this, &Ball::newGame), 2);
+        return true;
     }
 
     // hit left wall?
@@ -71,10 +90,7 @@
     // make sure that length of dir stays at 1
     vec2_norm(xDir, yDir);
 
-    // paint
-    //tft_boxfill(xPos - size / 2, yPos - size / 2, xPos - size / 2 + size, yPos - size / 2 + size, TFT_WHITE);
-    
-    return gameOver;
+    return false;
 }
 
 /**
@@ -83,21 +99,10 @@
  * @param
  * @retval
  */
-void Ball::newGame()
+void Ball::paint()
 {
-    gameOver = false;
-    tft_text(320/2 - 35, 240 / 2, "GAME OVER", TFT_BLACK, TFT_BLACK);   // hide the text 
-}
-
-/**
- * @brief
- * @note
- * @param
- * @retval
- */
-void Ball::paint(uint16_t clr)
-{
-    tft_boxfill(xPos - size / 2, yPos - size / 2, xPos + size / 2, yPos + size / 2, clr);
+    tft_boxfill(xPosOld - size / 2, yPosOld - size / 2, xPosOld + size / 2, yPosOld + size / 2, TFT_BLACK); // hide ball at old position
+    tft_boxfill(xPos - size / 2, yPos - size / 2, xPos + size / 2, yPos + size / 2, TFT_WHITE); // draw ball at new position
 }
 
 /**
@@ -108,7 +113,7 @@
  */
 void Ball::vec2_norm(float& x, float& y)
 {
-    // sets a vectors length to 1 (which means that x + y == 1)
+    // sets vector's length to 1 (which means that x + y = 1)
     float   length = sqrt((x * x) + (y * y));
     if (length != 0.0f) {
         length = 1.0f / length;

--- a/Ball.h	Thu Apr 11 20:18:15 2019 +0000
+++ b/Ball.h	Mon Apr 15 06:02:55 2019 +0000
@@ -10,18 +10,18 @@
 {
     int         size;
     float       velocity;
-    bool        gameOver;
     uint16_t    color;
-    Timeout     timeout;
 public:
-    Ball(int s = 8, float v = 8, uint16_t clr = TFT_WHITE );
+    Ball(int s = 8, float v = 4, uint16_t clr = TFT_WHITE );
+    void   home();
     bool   move(Racket* rkt);
-    void   newGame();
-    void   paint(uint16_t clr);
+    void   paint();
     void   vec2_norm(float& x, float &y);
     
     int    xPos;
-    int    yPos; 
+    int    yPos;
+    int    xPosOld;
+    int    yPosOld;
     float  xDir;
     float  yDir;
     

--- a/Racket.cpp	Thu Apr 11 20:18:15 2019 +0000
+++ b/Racket.cpp	Mon Apr 15 06:02:55 2019 +0000
@@ -7,7 +7,15 @@
  * @retval
  */
 Racket::Racket(int w /*= 20*/, int h /*= 40*/, uint16_t clr /*= TFT_WHITE*/ ) :
-    width(w), height(h), xPos(320), yPos(240 / 2), velocity(10), xDir(0), yDir(0), color(clr)
+    width(w),
+    height(h),
+    xPos(320),
+    yPos(240 / 2),
+    yPosOld(240 / 2),
+    velocity(4),
+    xDir(0),
+    yDir(0),
+    color(clr)
 { }
 
 /**
@@ -16,13 +24,29 @@
  * @param
  * @retval
  */
+void Racket::home()
+{
+    xPos = 320;
+    yPos = 240 / 2;
+    yPosOld = yPos;
+    xDir = 0;
+    yDir = 0;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
 void Racket::move(DigitalIn* btnUp, DigitalIn* btnDown)
 {
     yDir = 0;
     if (*btnUp == 0)
-        yDir = -1;      // move up
+        yDir = -1;  // move up
     if (*btnDown == 0)
-        yDir = 1;       // move down
+        yDir = 1;   // move down
+    yPosOld = yPos;
     yPos += yDir * velocity;
     if (yPos < height / 2)
         yPos = height / 2;
@@ -36,7 +60,14 @@
  * @param
  * @retval
  */
-void Racket::paint(uint16_t clr /*= TFT_WHITE*/ )
+void Racket::paint()
 {
-    tft_boxfill(xPos - width / 2, yPos - height / 2, xPos, yPos + height / 2, clr);
+    if (yDir == 1) {
+        tft_boxfill(xPos - width / 2, yPosOld - height / 2, xPos, yPos - height / 2, TFT_BLACK);    // hide racket at old position
+        tft_boxfill(xPos - width / 2, yPos - height / 2, xPos, yPos + height / 2, TFT_WHITE);       // draw racket at new position
+    }
+    else {
+        tft_boxfill(xPos - width / 2, yPos + height / 2, xPos, yPosOld + height / 2, TFT_BLACK);    // hide racket at old position
+        tft_boxfill(xPos - width / 2, yPos - height / 2, xPos, yPos + height / 2, TFT_WHITE);       // draw racket at new position
+    }
 }

--- a/Racket.h	Thu Apr 11 20:18:15 2019 +0000
+++ b/Racket.h	Mon Apr 15 06:02:55 2019 +0000
@@ -7,19 +7,20 @@
 class   Racket
 {
 public:
-    Racket(int w = 20, int h = 40, uint16_t clr = TFT_WHITE); 
-    void      move(DigitalIn* btnUp, DigitalIn* btnDown);
-    void      paint(uint16_t clr = TFT_WHITE);
-    
-    int       width;
-    int       height;
-    int       xPos;
-    int       yPos;
-    float     velocity;
-    int       xDir;
-    int       yDir;
-    bool      moved;    
-    uint16_t  color;
+    Racket(int w = 20, int h = 40, uint16_t clr = TFT_WHITE);
+    void        home();
+    void        move(DigitalIn* btnUp, DigitalIn* btnDown);
+    void        paint();
+
+    int         width;
+    int         height;
+    int         xPos;
+    int         yPos;
+    int         yPosOld;
+    float       velocity;
+    int         xDir;
+    int         yDir;
+    bool        moved;
+    uint16_t    color;
 };
-
 #endif // RACKET_H

--- a/main.cpp	Thu Apr 11 20:18:15 2019 +0000
+++ b/main.cpp	Mon Apr 15 06:02:55 2019 +0000
@@ -1,5 +1,5 @@
-// A simple Pong game with the STM32F407VET6 black board (Seeed Arch Max) and ILI9341 320x240 TFT display.
-// More info on STM32F407VET6 black board at https://os.mbed.com/users/hudakz/code/STM32F407VET6_Hello/
+// A simple Pong game with STM32F407VET6 black board (Seeed Arch Max) and ILI9341 320x240 TFT display.
+// See more info on the STM32F407VET6 black board at https://os.mbed.com/users/hudakz/code/STM32F407VET6_Hello/
 //
 #include "mbed.h"
 #include "tft.h"
@@ -7,7 +7,8 @@
 #include "Ball.h"
 
 // Connect the SPI interface of an ILI9341 320x240 TFT display to the STM32F407VET6 board (Seeed Arch Max) as follows:
-// ILI9341                      STM32F103C8T6
+
+// ILI9341                      STM32F407VET6
 //   VCC                            +5V
 //   GND                            GND
 //   CS                             PB_7
@@ -18,12 +19,41 @@
 //   LED   over a 56 ohm resistor   +5V
 //   SDO(MISO)                      PB_4
 //
-Ticker      ticker;
-DigitalIn   racketUp(PE_4, PullUp);     // K0 button
-DigitalIn   racketDown(PE_3, PullUp);   // K1 button
-Ball        ball;
-Racket      racket;
-bool        gameOver;
+Ticker          ticker;
+DigitalIn       racketUp(PE_4, PullUp);     // K0 button
+DigitalIn       racketDown(PE_3, PullUp);   // K1 button
+Ball            ball;
+Racket          racket;
+volatile bool   gameOn;
+volatile bool   missed;
+Timeout         timeout;
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void newGame()
+{
+    tft_clear(TFT_BLACK);
+    racket.home();
+    ball.home();
+    gameOn = true;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void gameOver()
+{
+    gameOn = false;
+    tft_text(320 / 2 - 35, 240 / 2, "GAME OVER", TFT_WHITE, TFT_BLACK);
+    timeout.attach(callback(newGame), 2);
+}
 
 /**
  * @brief
@@ -33,14 +63,15 @@
  */
 void updateField()
 {
-    racket.paint(TFT_BLACK);                // hide racket at old position
-    racket.move(&racketUp, &racketDown);    // move racket
-    racket.paint(TFT_WHITE);                // draw racket at new position
-    if (!gameOver)
-        ball.paint(TFT_BLACK);              // hide ball at old position
-    gameOver = ball.move(&racket);          // move ball and check for collisions + game over
-    if (!gameOver)
-        ball.paint(TFT_WHITE);              // draw ball at new position
+    if (gameOn) {
+        racket.move(&racketUp, &racketDown);    // move racket
+        racket.paint();                         // paint racket
+        missed = ball.move(&racket);            // move ball and check for collisions
+        if (missed)
+            gameOver();
+        else
+            ball.paint();                       // paint ball
+    }
 }
 
 /**
@@ -52,7 +83,7 @@
 int main()
 {
     tft_init();
-    tft_clear(TFT_BLACK);
-    ticker.attach_us(updateField, 40 * 1000);   // update period = 40 ms
+    newGame();
+    ticker.attach_us(updateField, 20 * 1000);   // update period = 20 ms
     while (true) { }
 }