// Game Boy Advance library for Logic Machines F'05
// Version 4, October 28, 2005


// ****************************************************************************************************
// Constants

// Use these image size constants for the third parameter to load_image()

#define IMAGE_8x8		0
#define IMAGE_16x16		1
#define IMAGE_32x32		2
#define IMAGE_64x64		3
#define IMAGE_16x8		4
#define IMAGE_32x8		5
#define IMAGE_32x16		6
#define IMAGE_64x32		7
#define IMAGE_8x16		8
#define IMAGE_8x32		9
#define IMAGE_16x32		10
#define IMAGE_32x64		11


// Use these constants as the parameter to button_pressed(), button_released() and button_held()

#define A_BUTTON		(1 << 0)	// 1
#define B_BUTTON		(1 << 1)	// 2
#define SELECT_BUTTON	(1 << 2)	// 4
#define START_BUTTON	(1 << 3)	// 8
#define RIGHT_BUTTON	(1 << 4)	// 16
#define LEFT_BUTTON		(1 << 5)	// 32
#define UP_BUTTON		(1 << 6)	// 64
#define DOWN_BUTTON		(1 << 7)	// 128
#define R_BUTTON		(1 << 8)	// 256
#define L_BUTTON		(1 << 9)	// 512

// Use these constants in place of 0 and 1 to improve code legibility

#define TRUE	1
#define FALSE	0
#define YES		1
#define NO		0


// ****************************************************************************************************
// Functions


// Miscellaneous functions

void start_game(void);				// start up the gbaio library
int rand(int min, int max);			// return a random number from min to max


// Input functions

void start_input(void);				// get ready to check inputs
int button_pressed(int which);		// did a button go down?
int button_released(int which);		// did a button get released?
int button_held(int which);			// is a button down?


// Drawing functions

void load_image(int image_number, char *image, int size);		// load an image into sprite image memory

void start_drawing(void);										// get ready to draw
void set_sprite_image(int sprite_number, int image_number);		// set the image for a sprite
void draw_sprite(int sprite_number, int x, int y);				// place a sprite on the screen
void set_color(int color_number, int red, int green, int blue);	// set a color in the sprite palette
void draw_dot( int x, int y, int r, int g, int b );				// draw a dot on the screen

void video_mode(int mode);										// don't call this
unsigned short rgb_color(int red, int green, int blue);			// same as RGB5