Rotating Backgrounds


Defines

#define PA_LoadRotBg(screen, bg_select, bg_tiles, bg_map, bg_size, wraparound)
 Load a background fit for rotating/scaling ! Warning, you must use PA_SetVideoMode to 1 if you want 1 rotating background (Bg3 only !), or 2 for 2 rotating backgrounds (Bg2 and 3). The background MUST be in 256 colors.
#define PA_LoadPAGfxRotBg(screen, bg_select, bg_name, wraparound)
 Load a background fit for rotating/scaling ! Warning, you must use PA_SetVideoMode to 1 if you want 1 rotating background (Bg3 only !), or 2 for 2 rotating backgrounds (Bg2 and 3). The background MUST be in 256 colors.

Functions

void PA_SetBgRot (u8 screen, u8 bg_select, s32 x_scroll, s32 y_scroll, s32 x_rotcentre, s32 y_rotcentre, s16 bg_angle, s32 bg_zoom)
void PA_SetRotMapTile (u8 screen, u8 bg_select, s16 x, s16 y, u8 tile_number)
u8 PA_GetRotMapTile (u8 screen, u8 bg_select, s16 x, s16 y)

Detailed Description

Load rotating backgrounds, move, rotate, scale them

Define Documentation

#define PA_LoadPAGfxRotBg ( screen,
bg_select,
bg_name,
wraparound   ) 

Value:

{\
PA_Load8bitBgPal(screen, (void*)bg_name##_Pal);\
PA_LoadRotBg(screen, bg_select, bg_name##_Tiles, bg_name##_Map, PA_GetPAGfxRotBgSize(bg_name##_Info[1]), wraparound);\
}
Load a background fit for rotating/scaling ! Warning, you must use PA_SetVideoMode to 1 if you want 1 rotating background (Bg3 only !), or 2 for 2 rotating backgrounds (Bg2 and 3). The background MUST be in 256 colors.

Parameters:
screen Chose de screen (0 or 1)
bg_select Background number to load
bg_name Background name, like bg0
wraparound If the background wraps around or not.

#define PA_LoadRotBg ( screen,
bg_select,
bg_tiles,
bg_map,
bg_size,
wraparound   ) 

Value:

{\
PA_DeleteBg(screen, bg_select);\
PA_LoadBgTiles(screen, bg_select, bg_tiles); \
PA_LoadRotBgMap(screen, bg_select, (void*)bg_map, bg_size); \
PA_InitBg(screen, bg_select, bg_size, wraparound, 1);\
PA_SetBgRot(screen, bg_select, 0, 0, 0, 0, 0, 256);\
}
Load a background fit for rotating/scaling ! Warning, you must use PA_SetVideoMode to 1 if you want 1 rotating background (Bg3 only !), or 2 for 2 rotating backgrounds (Bg2 and 3). The background MUST be in 256 colors.

Parameters:
screen Chose de screen (0 or 1)
bg_select Background number to load
bg_tiles Name of the tiles' info (example: ship_Tiles)
bg_map Name of the map's info (example : ship_Map)
bg_size Background size. Use the following macros : BG_ROT_128X128, or 256X256, 512X512, or 1024X1024
wraparound If the background wraps around or not.


Function Documentation

u8 PA_GetRotMapTile ( u8  screen,
u8  bg_select,
s16  x,
s16  y 
) [inline]

void PA_SetBgRot ( u8  screen,
u8  bg_select,
s32  x_scroll,
s32  y_scroll,
s32  x_rotcentre,
s32  y_rotcentre,
s16  bg_angle,
s32  bg_zoom 
) [inline]

void PA_SetRotMapTile ( u8  screen,
u8  bg_select,
s16  x,
s16  y,
u8  tile_number 
) [inline]


Generated on Sat Jun 13 12:55:13 2009 for PAlib - Programmer's Arsenal by  doxygen 1.5.8