ui: add a Platform class to query information about the current platform.

Implement GetMouseCount() to query the number of mice on the system.

src/Makefile.am

@@ -10,6 +10,7 @@ liblol_a_SOURCES = \
     world.cpp world.h sample.cpp sample.h sampler.cpp sampler.h \
     text.cpp text.h emitter.cpp emitter.h numeric.h hash.cpp hash.h \
     worldentity.cpp worldentity.h shader.cpp shader.h image.cpp image.h \
+    platform.cpp platform.h \
     \
     sdlapp.cpp sdlapp.h sdlinput.cpp sdlinput.h \
     \

src/core.h

@@ -23,6 +23,7 @@
 
 // Static classes
 #include "log.h"
+#include "platform.h"
 #include "video.h"
 #include "audio.h"
 #include "scene.h"

src/platform.cpp

@@ -0,0 +1,36 @@
+//
+// Lol Engine
+//
+// Copyright: (c) 2010-2011 Sam Hocevar <sam@hocevar.net>
+//   This program is free software; you can redistribute it and/or
+//   modify it under the terms of the Do What The Fuck You Want To
+//   Public License, Version 2, as published by Sam Hocevar. See
+//   http://sam.zoy.org/projects/COPYING.WTFPL for more details.
+//
+
+#if defined HAVE_CONFIG_H
+#   include "config.h"
+#endif
+
+#include <cmath>
+
+#include "core.h"
+
+namespace lol
+{
+
+/*
+ * Public Platform class
+ */
+
+int Platform::GetMouseCount()
+{
+#if defined ANDROID_NDK
+    /* Assume Android devices are touch devices that don't have a mouse */
+    return 0;
+#endif
+    return 1;
+}
+
+} /* namespace lol */
+

src/platform.h

@@ -0,0 +1,34 @@
+//
+// Lol Engine
+//
+// Copyright: (c) 2010-2011 Sam Hocevar <sam@hocevar.net>
+//   This program is free software; you can redistribute it and/or
+//   modify it under the terms of the Do What The Fuck You Want To
+//   Public License, Version 2, as published by Sam Hocevar. See
+//   http://sam.zoy.org/projects/COPYING.WTFPL for more details.
+//
+
+//
+// The Platform interface
+// ----------------------
+// Helper functions to set up the platform.
+//
+
+#if !defined __LOL_PLATFORM_H__
+#define __LOL_PLATFORM_H__
+
+#include <stdint.h>
+
+namespace lol
+{
+
+class Platform
+{
+public:
+    static int GetMouseCount();
+};
+
+} /* namespace lol */
+
+#endif // __LOL_PLATFORM_H__
+