Begin joystick code refactor; some related cleanups and unused code removal

BBGE/Joystick.h

@@ -0,0 +1,50 @@
+#ifndef BBGE_JOYSTICK_H
+#define BBGE_JOYSTICK_H
+
+#include <SDL_joystick.h>
+
+#include "Vector.h"
+
+#define MAX_JOYSTICK_BTN 32
+
+class Joystick
+{
+public:
+	Joystick();
+	void init(int stick=0);
+	void shutdown();
+	//Ranges from 0 to 65535 (full speed).
+	void rumble(float leftMotor, float rightMotor, float time);
+	void update(float dt);
+	Vector position, lastPosition;
+
+	float deadZone1, deadZone2;
+	float clearRumbleTime;
+
+	void callibrate(Vector &vec, float dead);
+	bool anyButton();
+	bool getButton(unsigned id) const { return buttonBitmask & (1u << id); }
+
+	Vector rightStick;
+
+	int stickIndex;
+	int s1ax, s1ay, s2ax, s2ay;
+
+private:
+	bool inited;
+	unsigned buttonBitmask; // FIXME: this should go
+
+#  ifdef BBGE_BUILD_SDL2
+	SDL_GameController *sdl_controller;
+	SDL_Haptic *sdl_haptic;
+#  endif
+	SDL_Joystick *sdl_joy;
+
+#if defined(__LINUX__) && !defined(BBGE_BUILD_SDL2)
+	int eventfd;
+	short effectid;
+#endif
+};
+
+
+#endif