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#include <Xw_Extension.h>
/* ifdef then trace on */
#ifdef TRACE
#define TRACE_DEF_TILE
#endif
/*
STATUS Xw_def_tile (atilemap,index,width,height,cdata):
XW_EXT_TILEMAP *atilemap
int index Tile index 0 >= x < MAXTILE
int width Width of tile in pixels
int height Height of tile in pixels
char *cdata Tile description
Update Polygon tile Extended tilemap index with the specified
bitmap cdata .
Datas must be defined as one char by bit cdata with value 0 or 1
so,cdata array must be defined as char cdata[width][height]
NOTE than tile index 0 is the default Tile (SOLID)
and cann't be REDEFINED .
Returns ERROR if BadTile Index or Bad tile datas
Returns SUCCESS if Successful
*/
#ifdef XW_PROTOTYPE
XW_STATUS Xw_def_tile (void* atilemap,
int index,int width,int height,char* cdata)
#else
XW_STATUS Xw_def_tile (atilemap,index,width,height,cdata)
void *atilemap;
int index ;
int width,height ;
char *cdata ;
#endif /*XW_PROTOTYPE*/
{
XW_EXT_TILEMAP *ptilemap = (XW_EXT_TILEMAP*)atilemap ;
Window root ;
Screen *screen ;
unsigned char *pattern ;
int i,j,l,m,n ;
if ( !Xw_isdefine_tileindex(ptilemap,index) ) {
/*Bad Tile Index*/
Xw_set_error(13,"Xw_def_tile",&index) ;
return (XW_ERROR) ;
}
if( width <= 0 || height <= 0 ) {
/*Bad Tile size*/
Xw_set_error(14,"Xw_def_tile",&index) ;
return (XW_ERROR) ;
}
if( !cdata ) {
/*Bad Tile data address*/
Xw_set_error(15,"Xw_def_tile",&index) ;
return (XW_ERROR) ;
}
if( ptilemap->tiles[index] )
XFreePixmap(_PDISPLAY,ptilemap->tiles[index]) ;
ptilemap->tiles[index] = 0 ;
screen = ScreenOfDisplay(_PDISPLAY,DefaultScreen(_PDISPLAY)) ;
root = RootWindowOfScreen(screen) ;
pattern = (unsigned char*) Xw_malloc(width*height/8) ;
pattern[0] = 0x00 ;
for( i=n=0,l=8 ; i<width ; i++ ) {
for( j=0 ; j<height ; j++ ) {
m = i*width + j ;
pattern[n] |= (cdata[m] & 1) << --l ;
if( !l ) {
l = 8 ;
n++ ;
pattern[n] = 0x00 ;
}
}
}
ptilemap->tiles[index] = XCreateBitmapFromData(_PDISPLAY,root,
(char*)pattern,width,height) ;
Xw_free(pattern) ;
if( !ptilemap->tiles[index] ) {
/*Tile Bitmap Allocation failed*/
Xw_set_error(16,"Xw_def_tile",&index) ;
return (XW_ERROR) ;
}
#ifdef TRACE_DEF_TILE
if( Xw_get_trace() ) {
printf (" Xw_def_tile(%lx,%d,%d,%d,%lx)\n",(long ) ptilemap,index,width,height,(long ) cdata);
}
#endif
return (XW_SUCCESS);
}
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