rem: if (TYPE_GET (_CurFramePtr->TypeIndexAndFlags) & SCREEN_DRAWABLE)
add: if (TYPE_GET (_CurFramePtr->TypeIndexAndFlags) == SCREEN_DRAWABLE)
context: TFB_Prim_Line (PLINE line, TFB_Palette *color){	int x1, y1, x2, y2;	x1=line->first.x - _CurFramePtr->HotSpot.x;	y1=line->first.y - _CurFramePtr->HotSpot.y;	x2=line->second.x - _CurFramePtr->HotSpot.x;	y2=line->second.y - _CurFramePtr->HotSpot.y;	if (TYPE_GET (_CurFramePtr->TypeIndexAndFlags) & SCREEN_DRAWABLE)		TFB_DrawScreen_Line (x1, y1, x2, y2, color->r, color->g, color->b, TFB_SCREEN_MAIN);	else		TFB_DrawImage_Line (x1, y1, x2, y2, color->r, color->g, color->b, _CurFramePtr->image);		}