Added support for left mouse click

JGE/include/JGE.h

@@ -110,6 +110,10 @@ class JGE
   static std::multimap<LocalKeySym, JButton> keyBinds;
   typedef std::multimap<LocalKeySym, JButton>::iterator keycodes_it;
 
+  // Mouse attributes
+  int mLastLeftClickX;
+  int mlastLeftClickY;
+
   friend void Run();
 
  public:
@@ -272,7 +276,17 @@ class JGE
   void ReleaseKey(const LocalKeySym);
   void ReleaseKey(const JButton);
 
+  //////////////////////////////////////////////////////////////////////////
+  /// Mouse events
+  ///  x and y are int coordinates relative to SCREEN_WIDTH and SCREEN_HEIGHT
+  //////////////////////////////////////////////////////////////////////////
+  void LeftClicked(int x, int y);
 
+  void LeftClickedProcessed();
+
+  // Getter, may have to move that in the JGuiListener
+  // Returns false if nothing has been clicked, true otherwise
+  bool GetLeftClickCoordinates(int& x, int& y);
 
   //////////////////////////////////////////////////////////////////////////
   /// Get if the system is ended/paused or not.

JGE/include/JGui.h

@@ -54,6 +54,9 @@ class JGuiObject
   virtual bool Leaving(JButton key);		// when focus is transferring away from this obj, true to go ahead
   virtual bool ButtonPressed();		// action button pressed, return false to ignore
 
+  // Used for mouse support so that the GUI engine can found out which Object was selected
+  virtual bool getTopLeft(int& top, int& left) {return false;};
+
   int GetId();
 };
 

JGE/src/JGE.cpp

@@ -262,9 +262,33 @@ void JGE::ResetInput()
 {
   while (!keyBuffer.empty()) keyBuffer.pop();
   holds.clear();
+  LeftClickedProcessed();
 }
 
 
+void JGE::LeftClicked(int x, int y)
+{
+  mLastLeftClickX = x;
+  mlastLeftClickY = y;
+}
+
+void JGE::LeftClickedProcessed()
+{
+  mLastLeftClickX = -1;
+  mlastLeftClickY = -1;
+}
+
+bool JGE::GetLeftClickCoordinates(int& x, int& y)
+{
+  if(mLastLeftClickX != -1 || mlastLeftClickY != -1)
+  {
+    x = mLastLeftClickX;
+    y = mlastLeftClickY;
+    return true;
+  }
+  return false;
+}
+
 JGE::JGE()
 {
   mApp = NULL;
@@ -295,6 +319,7 @@ void JGE::Init()
   JRenderer::GetInstance();
   JFileSystem::GetInstance();
   JSoundSystem::GetInstance();
+  LeftClickedProcessed();
 }
 
 void JGE::SetDelta(float delta)

JGE/src/JGui.cpp

@@ -148,6 +148,37 @@ bool JGuiController::CheckUserInput(JButton key){
     }
     return true;
   }
+  else
+  { // a dude may have clicked somewhere, we're gonna select the closest object from where he clicked
+    int x, y;
+    unsigned int distance2;
+    unsigned int minDistance2 = -1;
+    int n = mCurr;
+    if(mEngine->GetLeftClickCoordinates(x, y))
+    {
+      for(int i = 0; i < mCount; i++)
+      {
+        int top, left;
+        if(mObjects[i]->getTopLeft(top, left))
+        {
+          distance2 = (top-y)*(top-y) + (left-x)*(left-x);
+          if(distance2 < minDistance2)
+          {
+            minDistance2 = distance2;
+            n = i;
+          }
+        }
+      }
+
+      if (n != mCurr && mObjects[mCurr] != NULL && mObjects[mCurr]->Leaving(JGE_BTN_DOWN))
+      {
+        mCurr = n;
+        mObjects[mCurr]->Entering();
+      }
+      mEngine->LeftClickedProcessed();
+      return true;
+    }
+  }
   return false;
 }
 void JGuiController::Update(float dt)