diff --git a/src/Arduboy2.cpp b/src/Arduboy2.cpp
index 5d59b55..d6cdcd4 100644
--- a/src/Arduboy2.cpp
+++ b/src/Arduboy2.cpp
@@ -8,6 +8,24 @@
 #include "ab_logo.c"
 #include "glcdfont.c"
 
+//================================
+//========== class Rect ==========
+//================================
+
+Rect::Rect(int16_t x, int16_t y, uint8_t width, uint8_t height)
+ : x(x), y(y), width(width), height(height)
+{
+}
+
+//=================================
+//========== class Point ==========
+//=================================
+
+Point::Point(int16_t x, int16_t y)
+ : x(x), y(y)
+{
+}
+
 //========================================
 //========== class Arduboy2Base ==========
 //========================================
diff --git a/src/Arduboy2.h b/src/Arduboy2.h
index a445059..cdbbc25 100644
--- a/src/Arduboy2.h
+++ b/src/Arduboy2.h
@@ -103,6 +103,10 @@ struct Rect
   int16_t y;      /**< The Y coordinate of the top left corner */
   uint8_t width;  /**< The width of the rectangle */
   uint8_t height; /**< The height of the rectangle */
+  
+  Rect() = default; /**< The default constructor of the point */
+  
+  Rect(int16_t x, int16_t y, uint8_t width, uint8_t height); /**< The fully initialising constructor of the point */ 
 };
 
 /** \brief
@@ -117,6 +121,10 @@ struct Point
 {
   int16_t x; /**< The X coordinate of the point */
   int16_t y; /**< The Y coordinate of the point */
+  
+  Point() = default; /**< The default constructor of the point */
+  
+  Point(int16_t x, int16_t y); /**< The fully initialising constructor of the point */ 
 };
 
 //==================================
@@ -1018,7 +1026,7 @@ class Arduboy2Base : public Arduboy2Core
    *
    * \see Point Rect
    */
-  bool collide(Point point, Rect rect);
+  static bool collide(Point point, Rect rect);
 
   /** \brief
    * Test if a rectangle is intersecting with another rectangle.
@@ -1035,7 +1043,7 @@ class Arduboy2Base : public Arduboy2Core
    *
    * \see Rect
    */
-  bool collide(Rect rect1, Rect rect2);
+  static bool collide(Rect rect1, Rect rect2);
 
   /** \brief
    * Read the unit ID from system EEPROM.
diff --git a/src/Arduboy2Core.cpp b/src/Arduboy2Core.cpp
index 0635cd6..64c5471 100644
--- a/src/Arduboy2Core.cpp
+++ b/src/Arduboy2Core.cpp
@@ -6,6 +6,8 @@
 
 #include "Arduboy2Core.h"
 
+#include <avr/wdt.h>
+
 const uint8_t PROGMEM lcdBootProgram[] = {
   // boot defaults are commented out but left here in case they
   // might prove useful for reference
diff --git a/src/Arduboy2Core.h b/src/Arduboy2Core.h
index 19d051a..9165b9e 100644
--- a/src/Arduboy2Core.h
+++ b/src/Arduboy2Core.h
@@ -10,7 +10,6 @@
 #include <Arduino.h>
 #include <avr/power.h>
 #include <avr/sleep.h>
-#include <avr/wdt.h>
 
 
 // main hardware compile flags