* Menu.cpp: actions for CHOICE_SINGLE_PLAYER_GAME have been moved to a new function called MainMenuSinglePlayer().

+ BaseUnit.cpp, BaseUnit.h: new _selected flag.
+ Camera.cpp, Camera.h: linear movement has been taken over quadratic movement. Also, cursor now moves if dealing with screen borders.
+ Cursor.cpp, Cursor.h: new Cursor class holds cursor X/Y information. It is meant to be contained inside a HumanPlayer object.
* Game.cpp: minor changes in casts and comments.
+ HumanPlayer.cpp: added callbacks for button release events.
* HumanPlayer.cpp, HumanPlayerBtn.cpp: button handling has been transferred from HumanPlayer.cpp to HumanPlayerBtn.cpp in order to improve modularity.
+ Sprite.cpp: sprite data was not being checked against NULL.
- Unit.cpp: drawHandler() is now executed by Player object.

1 files changed, 30 insertions, 15 deletions

diff --git a/Sprite.cpp b/Sprite.cpp
index 131a4f1..2a5c3dc 100644
--- a/Sprite.cpp
+++ b/Sprite.cpp
@@ -60,23 +60,12 @@ _y(0)
 
 /*****************************************************************//**
  *
- * \brief   Reportedly, this function updates X/Y coordinates for
- *          a Sprite object.
+ * \brief   This function draws a \ref Sprite object on the screen.
  *
- * \param   x
- *              X position, relative to screen coordinates origin.
- *
- * \param   y
- *              Y position, relative to screen coordinates origin.
+ * \remarks If \ref Sprite object must be followed by a \ref Camera
+ *          object, X and Y coordinates are automatically adjusted.
  *
  *********************************************************************/
-void Sprite::setPos(const uint8_t x, const uint8_t y)
-{
-    /* Update coords according to input parameters. */
-    _x = x;
-    _y = y;
-}
-
 void Sprite::draw(void)
 {
     gb.display.setColor(_colour, WHITE);
@@ -86,10 +75,36 @@ void Sprite::draw(void)
         const uint8_t x = _followCam ? _cam->getX(_x) : _x;
         const uint8_t y = _followCam ? _cam->getY(_y) : _y;
 
-        gb.display.drawBitmap(x, y, _pu8SprData);
+        if (_pu8SprData != NULL)
+        {
+            gb.display.drawBitmap(x, y, _pu8SprData);
+        }
+        else
+        {
+            /* Undefined sprite data. */
+        }
     }
     else
     {
         /* Error: uninitialized camera. */
     }
 }
+
+/*****************************************************************//**
+ *
+ * \brief   Reportedly, this function updates X/Y coordinates for
+ *          a Sprite object.
+ *
+ * \param   x
+ *              X position, relative to screen coordinates origin.
+ *
+ * \param   y
+ *              Y position, relative to screen coordinates origin.
+ *
+ *********************************************************************/
+void Sprite::setPos(const uint8_t x, const uint8_t y)
+{
+    /* Update coords according to input parameters. */
+    _x = x;
+    _y = y;
+}