restructured project to match a more standard cmake setup

src/internal/input_backend.h

@@ -0,0 +1,54 @@
+#pragma once
+#include <blah/input/input.h>
+
+namespace Blah
+{
+	namespace InputBackend
+	{
+		// This is called internally by the app, and initializes the input state
+		void init();
+
+		// This is called internally by the app, and updates the input state
+		void frame();
+
+		// Call this when the Mouse moves relative to the window
+		void on_mouse_move(float x, float y);
+
+		// Call this when the Mouse moves relative to the screen
+		void on_mouse_screen_move(float x, float y);
+
+		// Call this when a Mouse Button is pressed
+		void on_mouse_down(MouseButton button);
+
+		// Call this when a Mouse Button is released
+		void on_mouse_up(MouseButton button);
+
+		// Call this when the Mouse Wheel moves
+		void on_mouse_wheel(Point wheel);
+
+		// Call this when a keyboard key is pressed
+		void on_key_down(Key key);
+
+		// Call this when a keyboard key is released
+		void on_key_up(Key key);
+
+		// Call this on Text Input
+		void on_text_utf8(const char* text);
+
+		// Call this when a Controller is connected. Note that the Name parameter must be kept valid
+		// until on_controller_disconnect is called with the same index.
+		void on_controller_connect(int index, const char* name, int isGamepad, int buttonCount, int axisCount, uint16_t vendor, uint16_t product, uint16_t version);
+
+		// Call this when a controller is disconnected
+		void on_controller_disconnect(int index);
+
+		// Call this when a controller button is pressed
+		void on_button_down(int index, int button);
+
+		// Call this when a controller button is released
+		void on_button_up(int index, int button);
+
+		/// Call this when a controller axis is moved
+		void on_axis_move(int index, int axis, float value);
+	}
+}