//
//
// Welcome to join our develope team
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//
#include <nds.h>
#include "Video.h"
u16 *OBJPtr( u32 type, u32 index ) {
u32 ptr;
switch( type ) {
case OBJ_TYPE_A: ptr=0x07000000; break;
case OBJ_TYPE_B: ptr=0x07000400; break;
default: /*type error*/ return OBJ_ERROR;
}
if( index > 255 ) /*index error*/ return OBJ_ERROR;
ptr+=index*8;
return (u16*)(ptr);
}
void OBJClear( u16 *obj ) {
obj[0]=obj[1]=obj[2]=0;
}
void OBJDisable( u16 *obj ) {
obj[0]=(2<<
;
}
void OBJPos( u16 *obj, int x, int y ) {
u16 i;
if( obj == 0 ) return;
x=x&511;
y=y&255;
i=obj[0];
i=i&~255;
i=i|y;
obj[0]=i;
i=obj[1];
i=i&~511;
i=i|x;
obj[1]=i;
}
void OBJSize( u16 *obj, u32 size ) {
u32 *ptr=(u32*)obj;
u32 i;
if( obj == 0 ) return;
i=ptr[0];
i=i&~( ( 3<<14 ) | (3<<30) );
i=i|size;
ptr[0]=i;
}
void OBJPal( u16 *obj, u32 index ) {
u16 i;
if( obj == 0 ) return;
index=index&15;
i=obj[2];
i=i&~(15<<12);
i=i|(index<<12);
obj[2]=i;
}
void OBJTile( u16 *obj, u32 index ) {
u16 i;
if( obj == 0 ) return;
index=index&255;
i=obj[2];
i=i&~255;
i=i|index;
obj[2]=i;
}
u16 *PalPtr( u32 type, u32 index ) {
u32 ptr;
switch( type ) {
case PAL_TYPE_BG_A: ptr=0x05000000; break;
case PAL_TYPE_BG_B: ptr=0x05000400; break;
case PAL_TYPE_OBJ_A: ptr=0x05000200; break;
case PAL_TYPE_OBJ_B: ptr=0x05000600; break;
default: /*type error*/ return PAL_ERROR;
}
if( index > 15 ) /*index error*/ return PAL_ERROR;
ptr+=index*0x20;
return (u16*)(ptr);
}
// copies 32 bytes from src to dst, useful for loading 16 colour nds palettes
u32 PalCopy( u16 *dst, const u16 *src ) {
if( dst==0 || src==0 ) return PAL_ERROR;
dmaCopy(src, dst, 32);
return PAL_SUCCESS;
}
// try using this and remove equivelent from arm9_main
u32 PalCopyGrayScale( u16 *dst, const u16 *src ) {
u32 i;
u32 r,g,b;
u32 a;
u32 o;
if( dst==0 || src==0 ) return PAL_ERROR;
for(i=0;i<16;i++) {
r= (src
)&31;
g= (src >> 5) & 31;
b= (src >> 10) & 31;
a=r+g+b;
a=a/3;
a=a&31;
o=a | (a<<5) | (a<<10) ;
dst=o;
}
return PAL_SUCCESS;
}
u16 *TilePtr( u32 type, u32 index ) {
u32 ptr;
switch( type ) {
case TILE_TYPE_BG_A: ptr=0x6000000; break;
case TILE_TYPE_BG_B: ptr=0x6200000; break;
case TILE_TYPE_OBJ_A: ptr=0x6400000; break;
case TILE_TYPE_OBJ_B: ptr=0x6600000; break;
default: /*type error*/ return TILE_ERROR;
}
if( index > 65535 ) /*index error*/ return TILE_ERROR;
ptr+=index*0x20;
return (u16*)(ptr);
}
u32 TileCopy( u16 *dst, const u16 *src, u32 count ) {
if( dst==0 || src==0 || count==0 ) return TILE_ERROR;
dmaCopy(src, dst, 32*count);
return TILE_SUCCESS;
}
