void CollisionPolygon2D::_add_to_collision_object(Object *p_obj) {
if (unparenting || !can_update_body)
return;
CollisionObject2D *co = p_obj->cast_to<CollisionObject2D>();
ERR_FAIL_COND(!co);
if (polygon.size() == 0)
return;
bool solids = build_mode == BUILD_SOLIDS;
if (solids) {
//here comes the sun, lalalala
//decompose concave into multiple convex polygons and add them
Vector<Vector<Vector2> > decomp = _decompose_in_convex();
shape_from = co->get_shape_count();
for (int i = 0; i < decomp.size(); i++) {
Ref<ConvexPolygonShape2D> convex = memnew(ConvexPolygonShape2D);
convex->set_points(decomp[i]);
co->add_shape(convex, get_transform());
if (trigger)
co->set_shape_as_trigger(co->get_shape_count() - 1, true);
}
shape_to = co->get_shape_count() - 1;
if (shape_to < shape_from) {
shape_from = -1;
shape_to = -1;
}
} else {
Ref<ConcavePolygonShape2D> concave = memnew(ConcavePolygonShape2D);
PoolVector<Vector2> segments;
segments.resize(polygon.size() * 2);
PoolVector<Vector2>::Write w = segments.write();
for (int i = 0; i < polygon.size(); i++) {
w[(i << 1) + 0] = polygon[i];
w[(i << 1) + 1] = polygon[(i + 1) % polygon.size()];
}
w = PoolVector<Vector2>::Write();
concave->set_segments(segments);
co->add_shape(concave, get_transform());
if (trigger)
co->set_shape_as_trigger(co->get_shape_count() - 1, true);
shape_from = co->get_shape_count() - 1;
shape_to = co->get_shape_count() - 1;
}
//co->add_shape(shape,get_transform());
}
void CollisionPolygon2D::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_ENTER_TREE: {
unparenting=false;
can_update_body=get_tree()->is_editor_hint();
if (!get_tree()->is_editor_hint()) {
//display above all else
set_z_as_relative(false);
set_z(VS::CANVAS_ITEM_Z_MAX-1);
}
} break;
case NOTIFICATION_EXIT_TREE: {
can_update_body=false;
} break;
case NOTIFICATION_LOCAL_TRANSFORM_CHANGED: {
if (!is_inside_tree())
break;
if (can_update_body) {
_update_parent();
} else if (shape_from>=0 && shape_to>=0) {
CollisionObject2D *co = get_parent()->cast_to<CollisionObject2D>();
for(int i=shape_from;i<=shape_to;i++) {
co->set_shape_transform(i,get_transform());
}
}
} break;
case NOTIFICATION_DRAW: {
if (!get_tree()->is_editor_hint() && !get_tree()->is_debugging_collisions_hint()) {
break;
}
for(int i=0;i<polygon.size();i++) {
Vector2 p = polygon[i];
Vector2 n = polygon[(i+1)%polygon.size()];
draw_line(p,n,Color(0.9,0.2,0.0,0.8),3);
}
#define DEBUG_DECOMPOSE
#if defined(TOOLS_ENABLED) && defined (DEBUG_DECOMPOSE)
Vector< Vector<Vector2> > decomp = _decompose_in_convex();
Color c(0.4,0.9,0.1);
for(int i=0;i<decomp.size();i++) {
c.set_hsv( Math::fmod(c.get_h() + 0.738,1),c.get_s(),c.get_v(),0.5);
draw_colored_polygon(decomp[i],c);
}
#else
draw_colored_polygon(polygon,get_tree()->get_debug_collisions_color());
#endif
} break;
case NOTIFICATION_UNPARENTED: {
unparenting = true;
_update_parent();
} break;
}
}
