PA_BgTiles.h

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00001 #ifndef _PA_BGTILES
00002 #define _PA_BGTILES
00003 
00004 //#include <PA9.h>
00005 #include <nds.h>
00006 #include "PA_General.h"
00007 
00008 
00009 // Extracts the size from PAGfx convertions
00010 extern inline u8 PA_GetPAGfxBgSize(u16 width, u16 height)
00011 {
00012        u8 bg_size = 0;
00013        if (height == 512)   bg_size = 2;
00014        if (width == 512)    bg_size ++;   
00015        return bg_size;
00016 }
00017 
00018 // Extracts the size from PAGfx convertions
00019 extern inline u8 PA_GetPAGfxRotBgSize(u16 width)
00020 {
00021        u8 bg_size = 1; //256x256 by default
00022        if (width <= 128)    bg_size = 0;  
00023        else if (width <= 256)      bg_size = 1;  
00024        else if (width <= 512)      bg_size = 2;         
00025        else if (width <= 1024) bg_size = 3;             
00026        
00027        return bg_size;
00028 }
00029 
00039 
00040 // Système de Tiles
00042 
00043 
00044 //background memory offset macros
00045 #define CharBaseBlock(screen, n) (((n)*0x4000) + 0x6000000 + (0x200000 *  screen))
00046 #define ScreenBaseBlock(screen, n) (((n)*0x800) + 0x6000000 + (0x200000 *  screen))
00047 extern u32 PA_bgmap[2][4]; // Pointeur vers les maps, 4 maps par screen
00048 extern u8 tilesetchar[2][4];
00049 
00050 // Quantité de données à charger en fonction de la taille de la map...
00051 extern u16 bg_sizes[4];
00052 extern u8 bg_place[4];
00053 
00054 extern u16 *PA_DrawBg[2]; // Fond dessinable
00055 
00056 
00057 extern u8 charblocks[2][70];
00058 extern u16 tilesetsize[2][4]; // Place utilisée pour chaque tileset
00059 extern u16 mapsize[2][4]; // Place utilisée pour chaque map
00060 extern u8 tilesetchar[2][4];  // Emplacement mémoire de chaque tileset
00061 extern u8 mapchar[2][4];  // Emplacement mémoire de chaque map
00062 
00063 extern u8 charsetstart[2];
00064 
00065 
00066 
00067 
00068 
00069 extern s32 PA_parallaxX[2][4];
00070 extern s32 PA_parallaxY[2][4];
00071 
00072 
00073 
00074 
00075 typedef struct {
00076        u8 infscroll; // Passe à 1 si scrolling infini activé...
00077        u16* bg_map; // Map
00078 //     s32 x, y;
00079        s32 lx, ly;
00080        s32 scrollx, scrolly;
00081        s32 maxx; // 32 ou 64, en fonction de la largeur...
00082 //     s32 startx, starty;
00083 }scrollpositions;
00084 
00085 extern scrollpositions scrollpos[2][4]; // Pour chaque écran et pour chaque fond :)
00086 
00087 
00088 
00089 
00090 
00091 
00092 // Mode de couleur
00093 #define BG_COLOR16 0x00
00094 #define BG_COLOR256 0x80
00095 
00096 
00097 #define CHAR_SHIFT 2
00098 #define SCREEN_SHIFT 8
00099 #define WRAPAROUND 0x1
00100 
00101 #define SCREEN_TILES 24576  // Taille à convertir pour avoir un écran complet...
00102 
00103 
00104 //scrolling registers for background 0
00105 
00106 
00107 // Registre pour les controles de chaque écran
00108 
00109 #define REG_BGSCREEN0  0x04000000
00110 #define REG_BGSCREEN1  0x04001000
00111 #define REG_BGSCREEN(screen) (0x04000000 + (screen * 0x1000))
00112 
00113 #define REG_BGCNT(screen, bg_number) (0x4000008 + (screen * 0x1000) + (bg_number << 1))
00114 
00115 // Premier registre pour les scroll. On en déduit les autres en ajoutant pour le screen et le numéro du Bg
00116 #define REG_BGSCROLLX 0x4000010
00117 #define REG_BGSCROLLY 0x4000012
00118 
00119 
00120 // Tailles pour les Bg :
00121 #define BG_256X256 0
00122 #define BG_512X256 1
00123 #define BG_256X512 2
00124 #define BG_512X512 3
00125 
00126 
00127 
00128 //ALL_BUT() pour faire tout sauf...
00129 #define TILE_N 1023
00130 #define TILE_PAL 61440
00131 #define TILE_HFLIP 1024
00132 #define TILE_VFLIP 2048
00133 
00134 
00135 
00136 
00137 
00149 void PA_ResetBgSys(void);
00150 
00173 void PA_InitBg(u8 screen, u8 bg_select, u8 bg_size, u8 wraparound, u8 color_mode);
00174 //#define PA_InitBg(screen, bg_select, bg_size, wraparound, color_mode) {    PA_bgmap[screen][bg_select] = ScreenBaseBlock(screen, ((bg_select + 1) << 3) - bg_place[bg_size]);_REG16(REG_BGSCREEN(screen)) |= (0x100 << (bg_select)); _REG16(REG_BGCNT(screen, bg_select)) = ((bg_select) | (bg_size << 14) |((((bg_select + 1) << 3) - bg_place[bg_size]) << SCREEN_SHIFT) | (wraparound << 13) | ((bg_select) << 2)) + (color_mode << 7);}
00175 
00176 
00189 #define PA_HideBg(screen, bg_select) _REG16(REG_BGSCREEN(screen)) &= ~(0x100 << (bg_select))
00190 
00191 
00204 #define PA_ShowBg(screen, bg_select) _REG16(REG_BGSCREEN(screen)) |= (0x100 << (bg_select))
00205 
00206 
00216 #define PA_ResetBg(screen) _REG16(REG_BGSCREEN(screen)) &= ~(0xF00)
00217 
00218 
00219 
00235 #define PA_LoadBgTiles(screen, bg_select, bg_tiles) PA_LoadBgTilesEx(screen, bg_select, (void*)bg_tiles, SIZEOF_16BIT(bg_tiles))
00236 //#define PA_LoadBgTiles(screen, bg_select, bg_tiles) {DMA_Copy((void*)(bg_tiles), (void*)CharBaseBlock(screen, bg_select),SIZEOF_16BIT(bg_tiles), DMA_16NOW);}
00237 
00238 
00258 void PA_LoadBgTilesEx(u8 screen, u8 bg_select, void* bg_tiles, u16 size);
00259 
00260 
00276 void PA_ReLoadBgTiles(u8 screen, u8 bg_select, void* bg_tiles);
00277 
00278 
00291 void PA_DeleteTiles(u8 screen, u8 bg_select);
00292 
00293 
00306 void PA_DeleteMap(u8 screen, u8 bg_select);
00307 
00308 
00309 
00322 extern inline void PA_DeleteBg(u8 screen, u8 bg_select) {
00323        PA_HideBg(screen, bg_select);
00324        PA_DeleteTiles(screen, bg_select);
00325        PA_DeleteMap(screen, bg_select);
00326 }
00327 
00347 void PA_LoadBgMap(u8 screen, u8 bg_select, void* bg_map, u8 bg_size);
00348 
00349 
00350 
00351 
00352 
00369 #define PA_LoadTiledBg(screen, bg_number, bg_name){\
00370        PA_LoadBgPal(screen, bg_number, (void*)bg_name##_Pal); \
00371        PA_LoadSimpleBg(screen, bg_number, bg_name##_Tiles, bg_name##_Map, PA_GetPAGfxBgSize(bg_name##_Width, bg_name##_Height), 0, 1);}
00372 
00373 
00374 
00375 
00404 #define PA_LoadSimpleBg(screen, bg_select, bg_tiles, bg_map, bg_size, wraparound, color_mode) {\
00405 PA_DeleteBg(screen, bg_select);\
00406 PA_LoadBgTiles(screen, bg_select, bg_tiles); \
00407 PA_LoadBgMap(screen, bg_select, (void*)bg_map, bg_size); \
00408 PA_InitBg(screen, bg_select, bg_size, 0, color_mode);\
00409 PA_BGScrollXY(screen, bg_select, 0, 0);}
00410 
00411 
00412 
00413 
00445 #define PA_LoadBg(screen, bg_select, bg_tiles, tile_size, bg_map, bg_size, wraparound, color_mode) {\
00446 PA_LoadBgTilesEx(screen, bg_select, (void*)bg_tiles, tile_size); \
00447 PA_LoadBgMap(screen, bg_select, (void*)bg_map, bg_size); \
00448 PA_InitBg(screen, bg_select, bg_size, 0, color_mode);\
00449 PA_BGScrollXY(screen, bg_select, 0, 0);}
00450 
00451 
00452 
00468 #define PA_BGScrollX(screen, bg_number, x) _REG16(REG_BGSCROLLX + ((screen) * 0x1000) + ((bg_number) << 2)) = (x)&1023
00469 
00485 #define PA_BGScrollY(screen, bg_number, y) _REG16(REG_BGSCROLLY + ((screen) * 0x1000) + ((bg_number) << 2)) = (y)&1023
00486 
00487 
00488 
00489 
00508 #define PA_BGScrollXY(screen, bg_number, x, y) {PA_BGScrollX(screen, bg_number, x); PA_BGScrollY(screen, bg_number, y);}
00509 
00510 
00511 
00512 
00534 extern inline void PA_SetMapTile(u8 screen, u8 bg_select, s16 x, s16 y, s16 tile_number) {
00535 *(u16*)(PA_bgmap[screen][bg_select] + ((x) << 1) + ((y) << 6)) &= ~(TILE_N); 
00536 *(u16*)(PA_bgmap[screen][bg_select] + ((x) << 1) + ((y) << 6)) |= ((tile_number)&TILE_N);
00537 }
00538 
00539 
00561 #define PA_SetMapTileAll(screen, bg_select, x, y, tile_info) *(u16*)(PA_bgmap[screen][bg_select] + ((x) << 1) + ((y) << 6)) = (tile_info)
00562 
00563 
00564 
00565 
00566 
00588 extern inline void PA_SetLargeMapTile(u8 screen, u8 bg_select, s32 x, s32 y, u32 tile_info) {
00589        u32 truex;
00590        u32 mapblock = 0;
00591        truex = x&31;
00592        mapblock = (x >> 5) << 11; // Permet d'avoir le bon block...
00593        
00594        *(u16*)(PA_bgmap[screen][bg_select] + ((truex) << 1) + ((y) << 6) + mapblock) = tile_info;
00595 }
00596 
00597 
00598 
00620 #define PA_SetMapTileHflip(screen, bg_select, x, y, hflip) {*(u16*)(PA_bgmap[screen][bg_select] + ((x) << 1) + ((y) << 6)) &= ALL_BUT(TILE_HFLIP); *(u16*)(PA_bgmap[screen][bg_select] + ((x) << 1) + ((y) << 6)) |= ((hflip) << 10);}
00621 
00622 
00644 #define PA_SetMapTileVflip(screen, bg_select, x, y, vflip) {*(u16*)(PA_bgmap[screen][bg_select] + ((x) << 1) + ((y) << 6)) &= ALL_BUT(TILE_VFLIP); *(u16*)(PA_bgmap[screen][bg_select] + ((x) << 1) + ((y) << 6)) |= ((vflip) << 11);}
00645 
00646 
00668 #define PA_SetMapTilePal(screen, bg_select, x, y, palette_number) {*(u16*)(PA_bgmap[screen][bg_select] + ((x) << 1) + ((y) << 6)) &= ALL_BUT(TILE_PAL); *(u16*)(PA_bgmap[screen][bg_select] + ((x) << 1) + ((y) << 6)) |= ((palette_number) << 12);}
00669 
00670 
00701 extern inline void PA_SetMapTileEx(u8 screen, u8 bg_select, s16 x, s16 y, u16 tile_number, u8 hflip, u8 vflip, u8 palette_number) {
00702        *(u16*)(PA_bgmap[screen][bg_select] + ((x) << 1) + ((y) << 6)) = (tile_number) + ((hflip) << 10) + ((vflip) << 11) + ((palette_number) << 12);
00703 }
00704 
00705 
00706 
00707 
00708 
00709 
00710 
00711 
00712 
00713 
00729 extern inline void PA_SetBgPrio(u8 screen, u8 bg, u8 prio) {
00730        _REG16(REG_BGCNT(screen, bg)) &= ~3;
00731        _REG16(REG_BGCNT(screen, bg)) |= prio;
00732 }
00733 
00734 extern inline void PA_CreateBgFromTiles(u8 screen, u8 bg_select, u8 bg_tiles, void *bg_map, u8 bg_size){
00735 PA_LoadBgMap(screen, bg_select, bg_map, bg_size);
00736 scrollpos[screen][bg_select].infscroll = 0; // Par défaut pas de scrolling infini...
00737 PA_bgmap[screen][bg_select] = ScreenBaseBlock(screen, mapchar[screen][bg_select]);
00738 tilesetchar[screen][bg_select] = tilesetchar[screen][bg_tiles];
00739 tilesetsize[screen][bg_select] = tilesetsize[screen][bg_tiles];
00740 
00741 _REG16(REG_BGSCREEN(screen)) |= (0x100 << (bg_select));
00742 _REG16(REG_BGCNT(screen, bg_select)) = bg_select | (bg_size << 14) |(mapchar[screen][bg_select] << SCREEN_SHIFT) | (1 << 13) | (tilesetchar[screen][bg_select] << 2) | (1 << 7);
00743 PA_BGScrollXY(screen, bg_select, 0, 0);   
00744 }
00745 
00746 
00758 extern inline void PA_ClearBg(u8 screen, u8 bg_select){
00759 u8 i, j;
00760 for (i = 0; i < 32; i++) for (j = 0; j < 32; j++) PA_SetMapTileAll(screen, bg_select, i, j, 0);
00761 }
00762 
00763  // end of BgTiles
00765 
00766 
00767 
00768 
00769 
00770 #endif
00771 

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