Window system

Macros
#define	PA_SetWin1XY(screen, x1, y1, x2, y2)   do{WIN1X(screen) = x2 + ((x1) << 8); WIN1Y(screen) = y2 + ((y1) << 8);}while(0)
	Set the X et Y coordinates of the rectangular second window. You'll also have to use PA_SetWin1 to chose which Backgrounds are visible and if sprites are too...
#define	PA_EnableWin0(screen, bg_sprites)   do{DISPCNTL(screen) |= WINDOW0; WININ(screen) &= 255; WININ(screen) |= (bg_sprites);}while(0)
	Enable and set which backgrounds will be visible and whether sprites will too or not, for Window 0. You'll then have to configure it with PA_SetWin0XY.
#define	PA_DisableWin0(screen)   DISPCNTL(screen) &= ~WINDOW0
	Disable the first window...
#define	PA_EnableWin1(screen, bg_sprites)   do{DISPCNTL(screen) |= WINDOW1; WININ(screen) &= 255; WININ(screen) |= ((bg_sprites) << 8);}while(0)
	Enable and set which backgrounds will be visible and whether sprites will too or not, for Window 1. You'll then have to configure it with PA_SetWin1XY.
#define	PA_DisableWin1(screen)   DISPCNTL(screen) &= ~WINDOW1
	Disable the second window...
#define	PA_DisableWinObj(screen)   DISPCNTL(screen) &= ~WINDOWOBJ
	Disable the object window...
#define	PA_SetOutWin(screen, bg_sprites)   do{WINOUT(screen) &= ~255; WINOUT(screen) |= bg_sprites;}while(0)
	Set which backgrounds will be visible and whether sprites will too or not, outside of the windows.

Functions
static void	PA_EnableWinObj (u8 screen, u16 bg_sprites)
	Enable and set which backgrounds will be visible and whether sprites will too or not, for Object Winodw (created from sprites in Window mode).
static void	PA_WindowFade (u8 screen, u8 type, u8 time)
	This allows you to do fade in and out, using the window system.

Detailed Description

Set up 2 windows and a possible object window...

Macro Definition Documentation

PA_SetWin1XY

#define PA_SetWin1XY	(		screen,
			x1,
			y1,
			x2,
			y2
	)		do{WIN1X(screen) = x2 + ((x1) << 8); WIN1Y(screen) = y2 + ((y1) << 8);}while(0)

Set the X et Y coordinates of the rectangular second window. You'll also have to use PA_SetWin1 to chose which Backgrounds are visible and if sprites are too...

Parameters

screen	Screen...
x1	X coordinate of the top left point
y1	Y coordinate of the top left point
x2	X coordinate of the bottom right point
y2	Y coordinate of the bottom right point

PA_EnableWin0

#define PA_EnableWin0	(		screen,
			bg_sprites
	)		do{DISPCNTL(screen) |= WINDOW0; WININ(screen) &= 255; WININ(screen) |= (bg_sprites);}while(0)

Enable and set which backgrounds will be visible and whether sprites will too or not, for Window 0. You'll then have to configure it with PA_SetWin0XY.

Parameters

screen	Screen...
bg_sprites	Backgrounds and sprites, use the following macro : WIN_BG0 | WIN_BG1 | WIN_BG2 | WIN_BG3 | WIN_OBJ | WIN_SFX (for special effects)

PA_DisableWin0

#define PA_DisableWin0

(

screen

)

DISPCNTL(screen) &= ~WINDOW0

Disable the first window...

Parameters

screen

Screen...

PA_EnableWin1

#define PA_EnableWin1	(		screen,
			bg_sprites
	)		do{DISPCNTL(screen) |= WINDOW1; WININ(screen) &= 255; WININ(screen) |= ((bg_sprites) << 8);}while(0)

Enable and set which backgrounds will be visible and whether sprites will too or not, for Window 1. You'll then have to configure it with PA_SetWin1XY.

Parameters

screen	Screen...
bg_sprites	Backgrounds and sprites, use the following macro : WIN_BG0 | WIN_BG1 | WIN_BG2 | WIN_BG3 | WIN_OBJ | WIN_SFX (for special effects)

PA_DisableWin1

#define PA_DisableWin1

(

screen

)

DISPCNTL(screen) &= ~WINDOW1

Disable the second window...

Parameters

screen

Screen...

PA_DisableWinObj

#define PA_DisableWinObj

(

screen

)

DISPCNTL(screen) &= ~WINDOWOBJ

Disable the object window...

Parameters

screen

Screen...

PA_SetOutWin

#define PA_SetOutWin	(		screen,
			bg_sprites
	)		do{WINOUT(screen) &= ~255; WINOUT(screen) |= bg_sprites;}while(0)

Set which backgrounds will be visible and whether sprites will too or not, outside of the windows.

Parameters

screen	Screen...
bg_sprites	Backgrounds and sprites, use the following macro : WIN_BG0 | WIN_BG1 | WIN_BG2 | WIN_BG3 | WIN_OBJ

Function Documentation

PA_EnableWinObj()

static inline void PA_EnableWinObj ( u8  screen, u16  bg_sprites  )

inlinestatic

Enable and set which backgrounds will be visible and whether sprites will too or not, for Object Winodw (created from sprites in Window mode).

Parameters

screen	Screen...
bg_sprites	Backgrounds and sprites, use the following macro : WIN_BG0 | WIN_BG1 | WIN_BG2 | WIN_BG3 | WIN_OBJ | WIN_SFX (for special effects)

PA_WindowFade()

static inline void PA_WindowFade ( u8  screen, u8  type, u8  time  )

inlinestatic

This allows you to do fade in and out, using the window system.

Parameters

screen	Screen...
type	Type... 8 different types are available (0-7)
time	Time, from 0 to 32 (included). 0 is a completely viewable screen, 32 is completely out