Added tracking of the still time on the mouse.

"Still time" is recorded as the number of seconds (as a float) since the last movement of the mouse. This is in preparation for code to hide the targeting bars in-game when the mouse is still.

Signed-off-by: Alastair Lynn <[email protected]>

Engine/Input.cpp

@@ -1,4 +1,5 @@
 #include "Input.h"
+#include "GameTime.h"
 
 #include <SDL/SDL.h>
 #include <SDL/SDL_OpenGL.h>
@@ -11,6 +12,8 @@ namespace Input
 namespace Internal
 {
 
+static float mouseBase = 0.0f;
+
 std::string MapKey ( SDLKey k )
 {
 	switch (k)
@@ -145,6 +148,7 @@ void UpdateMouse ( Sint16 px, Sint16 py )
     SDL_Surface* screen = SDL_GetVideoSurface();
     mousePosition.X() = float(px) / float(screen->w);
     mousePosition.Y() = 1.0f - (float(py) / float(screen->h));
+	mouseBase = GameTime();
 }
 
 std::string MouseButtonName ( Uint32 button )
@@ -227,4 +231,9 @@ vec2 MousePosition ()
 	return mousePosition;
 }
 
+float MouseStillTime ()
+{
+	return GameTime() - mouseBase;
+}
+
 }

Engine/Input.h

@@ -64,6 +64,10 @@ Event* Next ();
  * Fetches the position of the mouse
  */
 vec2 MousePosition ();
+/**
+ * Time since the last movement of the mouse.
+ */
+float MouseStillTime ();
 
 }