Bool AnimateObject(object_node *obj, int dt)
{
Bool need_redraw = False;
list_type over_list;
if (OF_FLICKERING == (OF_FLICKERING & obj->flags))
{
obj->lightAdjust = rand() % FLICKER_LEVEL;
need_redraw = TRUE;
}
if (OF_FLASHING == (OF_FLASHING & obj->flags))
{
DWORD angleFlash;
obj->bounceTime += min(dt,50);
if (obj->bounceTime > TIME_FLASH)
obj->bounceTime -= TIME_FLASH;
angleFlash = NUMDEGREES * obj->bounceTime / TIME_FLASH;
obj->lightAdjust = FIXED_TO_INT(fpMul(FLASH_LEVEL, SIN(angleFlash)));
need_redraw = TRUE;
}
if (obj->animate->animation != ANIMATE_NONE)
{
object_bitmap_type obj_bmap;
obj_bmap = FindObjectBitmap(obj->icon_res);
if (obj_bmap != NULL)
need_redraw |= AnimateSingle(obj->animate, BitmapsNumGroups(obj_bmap->bmaps), dt);
}
if (OF_PHASING == (OF_PHASING & obj->flags))
{
int anglePhase;
obj->phaseTime += min(dt,40);
if (obj->phaseTime > TIME_FULL_OBJECT_PHASE)
obj->phaseTime -= TIME_FULL_OBJECT_PHASE;
anglePhase = numPhases * obj->phaseTime / TIME_FULL_OBJECT_PHASE;
obj->drawingtype = phaseStates[anglePhase];
need_redraw = TRUE;
}
// Animate object's overlays
for (over_list = *(obj->overlays); over_list != NULL; over_list = over_list->next)
{
object_bitmap_type obj_bmap;
Overlay *overlay = (Overlay *) (over_list->data);
if (overlay->animate.animation == ANIMATE_NONE)
continue;
obj_bmap = FindObjectBitmap(overlay->icon_res);
if (obj_bmap != NULL)
{
need_redraw |= AnimateSingle(&overlay->animate, BitmapsNumGroups(obj_bmap->bmaps), dt);
}
}
return need_redraw;
}
/* return the cross product c = a cross b */
Vector3D *V3Cross(Vector3D *a, Vector3D *b, Vector3D *c) {
c->x = fpMul(a->y, b->z) - fpMul(a->z, b->y);
c->y = fpMul(a->z, b->x) - fpMul(a->x, b->z);
c->z = fpMul(a->x, b->y) - fpMul(a->y, b->x);
return(c);
}
