void Sprites::Arm(ULO spriteNo)
{
// Actually this is kind of wrong since each sprite serialises independently
bool is16Color = Is16Color(spriteNo);
if (is16Color && (spriteNo & 1) == 0) // Only arm the odd sprite
{
Arm(spriteNo + 1);
SpriteState[spriteNo].armed = false;
return;
}
SpriteState[spriteNo].armed = true;
SpriteState[spriteNo].x_cylinder = SpriteState[spriteNo].x;
SpriteState[spriteNo].pixels_output = 0;
SpriteState[spriteNo].dat_hold[0].w = SpriteState[spriteNo].dat[0];
SpriteState[spriteNo].dat_hold[1].w = SpriteState[spriteNo].dat[1];
if (is16Color)
{
SpriteState[spriteNo].dat_hold[2].w = SpriteState[spriteNo - 1].dat[0];
SpriteState[spriteNo].dat_hold[3].w = SpriteState[spriteNo - 1].dat[1];
Decode16(spriteNo);
}
else
{
Decode4(spriteNo);
}
}
static int DecodeLength(void) {
int length;
length = Decode16(buf);
if(debug>0)
fprintf(stderr," -> markerlength = %d\n",length);
SKIP(2);
return length;
}
void DecodeSOF(void) {
int length; int i;
length = DecodeLength();
imgh = Decode16(buf+1);
imgw = Decode16(buf+3);
comp = buf[5];
if(comp*3+8 != length) {
if(debug>-1)
fprintf(stderr,"SOF marker length mismatch\n");
} else {
for(i=0; i<__MIN(comp,4); i++) {
compid[i] = *(buf+6+i*3); // -2 bytes for length field
}
}
SKIP(length-2);
}