//determines whether a poly intersects a circle
int PolyInCircle(const POLY * t, const CIRCLE * c)
{
//*
int i;
LINE l;
//*/
if(!t || !c)
return 0;
if(PointInCircle(&t->p[0], c) || PointInCircle(&t->p[1], c) || PointInCircle(&t->p[2], c))
return 1; //if any of the points of the polygon are within the circle, it intersects
//*
for(i = 0; i < 3; i++)
{
l.a.x = t->p[i].x;
l.a.y = t->p[i].y;
l.b.x = t->p[(i + 1) % 3].x;
l.b.y = t->p[(i + 1) % 3].y;
if(LineInCircle_NoEndPtCheck(&l, c)) //check each line of the polygon to see if it's in the circle
return 1;
}
//*/
return 0;
}
void FizzyWindow::OnMouseButton(gxbase::GLWindow::MouseButton button, bool down)
{
if(button == gxbase::GLWindow::MouseButton::MBLeft)
{
if(down)
{
scn.mouseDown=true;
float2 point(scn.mx, scn.my);
vector<SimBody*> &objects = scn.objects;
for(int i=4;i<objects.size();++i)
{
if(objects[i]->owner != SimBody::whoami) continue;
if(PointInCircle(point, Circle(objects[i]->position, objects[i]->boundingCircleRadius)))
{
scn.jointedBody = objects[i];
break;
}
}
}
else
{
scn.mouseDown=false;
scn.springForce.zero();
scn.jointedBody=0;
}
}
};
/*****
* Name: _XmHTMLGetImagemapAnchor
* Return Type: XmHTMLAnchor*
* Description: checks whether the given coordinates lie somewhere within
* the given imagemap.
* In:
* html: XmHTMLWidget
* x,y: point coordinates, relative to upper-left corner of the
* html widget
* image: current image data, required to make x and y coordinates
* relative to upper-left corner of the image.
* map: imagemap to check
* Returns:
* anchor data if successfull, NULL otherwise
*****/
XmHTMLAnchor*
_XmHTMLGetAnchorFromMap(XmHTMLWidget html, int x, int y,
XmHTMLImage *image, XmHTMLImageMap *map)
{
int xs, ys;
mapArea *area, *def_area;
XmHTMLAnchor *anchor = NULL;
Boolean found = False;
/* map coordinates to upperleft corner of image */
xs = x + html->html.scroll_x - image->owner->x;
ys = y + html->html.scroll_y - image->owner->y;
_XmHTMLFullDebug(10, ("map.c: _XmHTMLGetAnchorFromMap, x = %i, y = %i, "
"relative x = %i, relative y = %i\n", x, y, xs, ys));
area = map->areas;
def_area = NULL;
/*
* We test against found instead of anchor becoming non-NULL:
* areas with the NOHREF attribute set don't have an anchor but
* should be taken into account as well.
*/
while(area && !found)
{
switch(area->shape)
{
case MAP_RECT:
if(PointInRect(xs, ys, area->coords))
{
anchor = area->anchor;
found = True;
}
break;
case MAP_CIRCLE:
if(PointInCircle(xs, ys, area->coords[0], area->coords[1],
area->coords[2]))
{
anchor = area->anchor;
found = True;
}
break;
case MAP_POLY:
if(PointInPoly(xs, ys, area->region))
{
anchor = area->anchor;
found = True;
}
break;
/*
* just save default area info; it's only needed if nothing
* else matches.
*/
case MAP_DEFAULT:
def_area = area;
break;
}
area = area->next;
}
if(!found && def_area)
anchor = def_area->anchor;
_XmHTMLFullDebug(10, ("map.c: _XmHTMLGetAnchorFromMap, %s anchor found\n",
(anchor ? "an" : "no")));
return(anchor);
}
//performs clipping each frame
void Clipping(void)
{
LIST * cur1;
LIST * cur2;
LIST * next;
for(cur1 = g_asteroid_list; cur1; cur1 = next)
{
next = cur1->next;
if(g_ships
&& !g_player.wait_time
&& (((ASTEROID *)cur1->d)->region & g_player.region)
&& PolyInCircle(&g_player.clip_poly, &(((ASTEROID *)cur1->d)->clip_circle))) //if the player hits the asteroid
{
PlayerHit();
AsteroidHit(cur1, 0);
continue;
}
for(cur2 = g_alien_list; cur2; cur2 = cur2->next)
{
if((((ASTEROID *)cur1->d)->region & ((ALIEN *)cur2->d)->region)
&& (PolyInCircle(&(((ALIEN *)cur2->d)->clip_poly/*s[0]*/), &(((ASTEROID *)cur1->d)->clip_circle))
/*|| PolyInCircle(&(((ALIEN *)cur2->d)->clip_polys[1]), &(((ASTEROID *)cur1->d)->clip_circle))
|| PolyInCircle(&(((ALIEN *)cur2->d)->clip_polys[2]), &(((ASTEROID *)cur1->d)->clip_circle))*/))
{
AlienHit(cur2, 0);
AsteroidHit(cur1, 0);
break;
}
}
if(cur2) //if we broke early from the loop
continue;
for(cur2 = g_shot_list; cur2; cur2 = cur2->next)
{
if((((ASTEROID *)cur1->d)->region & ((SHOT *)cur2->d)->region)
&& PointInCircle(&(((SHOT *)cur2->d)->pos), &(((ASTEROID *)cur1->d)->clip_circle))) //if any shot hits the asteroid
{
AsteroidHit(cur1, ((SHOT *)cur2->d)->player_owned);
RemoveNode(cur2, &g_shot_list);
break;
}
}
if(cur2) //if we broke early from the loop
continue;
}
for(cur1 = g_shot_list; cur1; cur1 = next)
{
next = cur1->next;
if(!((SHOT *)cur1->d)->player_owned
&& g_ships
&& !g_player.wait_time
&& (g_player.region & ((SHOT *)cur1->d)->region)
&& PointInPoly(&(((SHOT *)cur1->d)->pos), &g_player.clip_poly)) //if the alien shot is inside player
{
RemoveNode(cur1, &g_shot_list);
PlayerHit();
continue;
}
if(((SHOT *)cur1->d)->player_owned)
{
for(cur2 = g_alien_list; cur2; cur2 = cur2->next)
{
if((((SHOT *)cur1->d)->region & ((ALIEN *)cur2->d)->region)
&& (PointInPoly(&(((SHOT *)cur1->d)->pos), &(((ALIEN *)cur2->d)->clip_poly/*s[0]*/))
/*|| PointInPoly(&(((SHOT *)cur1->d)->pos), &(((ALIEN *)cur2->d)->clip_polys[1]))
|| PointInPoly(&(((SHOT *)cur1->d)->pos), &(((ALIEN *)cur2->d)->clip_polys[2]))*/))
{
RemoveNode(cur1, &g_shot_list);
AlienHit(cur2, 1);
break;
}
}
if(cur2)
continue;
}
for(cur2 = g_powerup_list; cur2; cur2 = cur2->next)
{
if((((SHOT *)cur1->d)->region & ((POWERUP *)cur2->d)->region)
&& PointInCircle(&(((SHOT *)cur1->d)->pos), &(((POWERUP *)cur2->d)->clip_circle)))
{
PowerupHit(cur2, ((SHOT *)cur1->d)->player_owned);
RemoveNode(cur1, &g_shot_list);
break;
}
}
if(cur2)
continue;
}
if(g_ships
&& !g_player.wait_time)
{
for(cur1 = g_alien_list; cur1; cur1 = cur1->next)
{
if((g_player.region & ((ALIEN *)cur1->d)->region)
&& (PolyInPoly(&g_player.clip_poly, &(((ALIEN *)cur1->d)->clip_poly/*s[0]*/))
/*|| PolyInPoly(&g_player.clip_poly, &(((ALIEN *)cur1->d)->clip_polys[1]))
|| PolyInPoly(&g_player.clip_poly, &(((ALIEN *)cur1->d)->clip_polys[2]))*/))
{
PlayerHit();
AlienHit(cur1, 0);
break;
}
}
}
if(g_ships)
{
for(cur1 = g_powerup_list; cur1; cur1 = next)
{
next = cur1->next;
if((g_player.region & ((POWERUP *)cur1->d)->region)
&& PolyInCircle(&g_player.clip_poly, &(((POWERUP *)cur1->d)->clip_circle)))
{
GetPowerup(cur1);
continue;
}
}
}
}
