* Sprite data width and height is now extracted from Sprite class.

BaseUnit.cpp

@@ -3,7 +3,9 @@
  * ******************************************************************/
 
 #include "BaseUnit.h"
+#include "Camera.h"
 #include "System.h"
+#include "Sprite.h"
 #include <stdbool.h>
 #include <stdint.h>
 #include <Gamebuino.h>
@@ -24,6 +26,8 @@
  *  Local variables definition
  * ******************************************************************/
 
+static const Camera* cam;
+
 /* *******************************************************************
  *  Local prototypes declaration
  * ******************************************************************/
@@ -69,6 +73,17 @@ void BaseUnit::handler(void)
 {
 }
 
+/*****************************************************************//**
+ *
+ * \brief   This function sets global camera for all BaseUnit
+ *          instances.
+ *
+ *********************************************************************/
+void BaseUnit::setCamera(const Camera* const c)
+{
+    cam = c;
+}
+
 /*****************************************************************//**
  *
  * \brief   Periodical draw handler for BaseUnit class.
@@ -78,19 +93,19 @@ void BaseUnit::drawHandler(const uint8_t* const pu8SprData)
 {
     if (isSelected())
     {
-        enum
-        {
-            WIDTH_DATA_INDEX,
-            HEIGHT_DATA_INDEX
-        };
-
         /* Retrieve unit width from sprite data. */
-        const uint8_t w = pgm_read_byte(&pu8SprData[WIDTH_DATA_INDEX]);
+        const uint8_t w = Sprite::getWidth(pu8SprData);
 
         /* Retrieve unit height from sprite data. */
-        const uint8_t h = pgm_read_byte(&pu8SprData[HEIGHT_DATA_INDEX]);
+        const uint8_t h = Sprite::getHeight(pu8SprData);
 
-        gb.display.drawRect(_x, _y, w, h);
+        if (cam != NULL)
+        {
+            const uint8_t x = cam->getX(_x - w);
+            const uint8_t y = cam->getY(_y - h);
+
+            gb.display.drawRoundRect(x, y, w << 1, h << 1, 2);
+        }
     }
     else
     {

BaseUnit.h

@@ -7,6 +7,7 @@
 
 #include <stdbool.h>
 #include <stdint.h>
+#include "Camera.h"
 
 /* *******************************************************************
  *  Defines
@@ -35,6 +36,7 @@ class BaseUnit
         void handler(void);
         void drawHandler(const uint8_t* const pu8SprData);
         void create(const uint16_t x, const uint16_t y);
+        static void setCamera(const Camera* const c);
         bool isAlive(void);
         bool isSelected(void);
         void setSelected(const bool bSelect);

Camera.cpp

@@ -51,15 +51,25 @@ Camera::Camera(void) :
 {
 }
 
+uint16_t Camera::getRealX(const int16_t x) const
+{
+    return static_cast<uint16_t>(x + _xOffset);
+}
+
+uint16_t Camera::getRealY(const int16_t y) const
+{
+    return static_cast<uint16_t>(y + _yOffset);
+}
+
 /*****************************************************************//**
  *
  * \brief   This function transforms X coordinates for a given
  *          object to camera coordinates.
  *
  *********************************************************************/
-uint8_t Camera::getX(const uint8_t x) const
+int16_t Camera::getX(const uint16_t x) const
 {
-    return x - _xOffset;
+    return static_cast<int16_t>(x - _xOffset);
 }
 
 /*****************************************************************//**
@@ -68,9 +78,9 @@ uint8_t Camera::getX(const uint8_t x) const
  *          object to camera coordinates.
  *
  *********************************************************************/
-uint8_t Camera::getY(const uint8_t y) const
+int16_t Camera::getY(const uint16_t y) const
 {
-    return y - _yOffset;
+    return static_cast<int16_t>(y - _yOffset);
 }
 
 /*****************************************************************//**

Camera.h

@@ -1,25 +1,36 @@
 #ifndef CAMERA_H__
 #define CAMERA_H__
 
-/* *************************************
+/* *******************************************************************
  *  Includes
- * *************************************/
+ * ******************************************************************/
 
 #include "Cursor.h"
 #include <stdint.h>
 #include <stdbool.h>
 
-/* *************************************
+/* *******************************************************************
  *  Defines
- * *************************************/
+ * ******************************************************************/
 
-/* *************************************
+/* *******************************************************************
- *  Structs and enums
+ *  Global types definition
- * *************************************/
+ * ******************************************************************/
 
-/* *************************************
+/* Forward declaration. */
+class Cursor;
+
+/* *******************************************************************
+ *  Global variables declaration
+ * ******************************************************************/
+
+/* *******************************************************************
+ *  Global functions declaration
+ * ******************************************************************/
+
+/* *******************************************************************
  *  Class definition
- * *************************************/
+ * ******************************************************************/
 
 class Camera
 {
@@ -27,8 +38,10 @@ class Camera
         Camera(void);
         void adjustLock(const bool bLock);
         bool isLocked(void) const;
-        uint8_t getX(const uint8_t x) const;
+        int16_t getX(const uint16_t x) const;
-        uint8_t getY(const uint8_t y) const;
+        int16_t getY(const uint16_t y) const;
+        uint16_t getRealX(const int16_t x) const;
+        uint16_t getRealY(const int16_t y) const;
 
         /* Event handlers. */
         void onLeftBtnPressed(Cursor& cursor);

Sprite.cpp

@@ -72,12 +72,12 @@ void Sprite::draw(void)
 
     if (_cam != NULL)
     {
-        const uint8_t x = _followCam ? _cam->getX(_x) : _x;
+        const int16_t x = _followCam ? _cam->getX(_x) : (int16_t)_x;
-        const uint8_t y = _followCam ? _cam->getY(_y) : _y;
+        const int16_t y = _followCam ? _cam->getY(_y) : (int16_t)_y;
 
         if (_pu8SprData != NULL)
         {
-            gb.display.drawBitmap(x, y, _pu8SprData);
+            gb.display.drawBitmap((int8_t)x, (int8_t)y, _pu8SprData);
         }
         else
         {
@@ -90,6 +90,34 @@ void Sprite::draw(void)
     }
 }
 
+uint8_t Sprite::getWidth(const uint8_t* const pu8SprData)
+{
+    enum
+    {
+        WIDTH_DATA_INDEX = 0
+    };
+
+    /* Retrieve unit width from sprite data. */
+    const uint8_t w = pgm_read_byte(&pu8SprData[WIDTH_DATA_INDEX]);
+
+    /* Return retrieved width. */
+    return w;
+}
+
+uint8_t Sprite::getHeight(const uint8_t* const pu8SprData)
+{
+    enum
+    {
+        HEIGHT_DATA_INDEX = 1
+    };
+
+    /* Retrieve unit height from sprite data. */
+    const uint8_t h = pgm_read_byte(&pu8SprData[HEIGHT_DATA_INDEX]);
+
+    /* Return retrieved height. */
+    return h;
+}
+
 /*****************************************************************//**
  *
  * \brief   Reportedly, this function updates X/Y coordinates for

Sprite.h

@@ -44,6 +44,8 @@ class Sprite
         {
             _cam = cam;
         };
+        static uint8_t getWidth(const uint8_t* const pu8SprData);
+        static uint8_t getHeight(const uint8_t* const pu8SprData);
 
     private:
         const uint8_t* _pu8SprData;