// Valid weather modes.
#define WEATHER_NONE		0
#define WEATHER_CLOUDS		1
#define WEATHER_RAIN		2
#define WEATHER_SNOW		3
#define WEATHER_FOG		4
#define WEATHER_NIGHT		5


// Sets a weather mode to be displayed via the V1RPG_Renderfunc() 
// function from v1_rpg.vc
//
// valid weather modes are:
//
// WEATHER_NONE, WEATHER_CLOUDS, ,
// WEATHER_FOG, WEATHER_NIGHT
//
// WEATHER_RAIN and WEATHER_SNOW are not yet implemented.
void SetWeather(int mode) 



// shakes the screen horizontally with a magnitude of x_intensity and
// vertically with a magnitude of y_intensity for duration time 
void Earthquake( int x_intensity, int y_intensity, int duration )