godot/scene/3d/collision_polygon.cpp
Pedro J. Estébanez aefedb73fc Update collision shapes data on tree entered
This is needed because the final startup values for shapes may change between parenting and entering the scene tree. For instance, if the collision shape belongs to a inherited scene.

Fixes #13835.
2018-01-11 21:08:58 +01:00

201 lines
6.2 KiB
C++

/*************************************************************************/
/* collision_polygon.cpp */
/*************************************************************************/
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/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
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#include "collision_polygon.h"
#include "collision_object.h"
#include "scene/resources/concave_polygon_shape.h"
#include "scene/resources/convex_polygon_shape.h"
void CollisionPolygon::_build_polygon() {
if (!parent)
return;
parent->shape_owner_clear_shapes(owner_id);
if (polygon.size() == 0)
return;
Vector<Vector<Vector2> > decomp = Geometry::decompose_polygon(polygon);
if (decomp.size() == 0)
return;
//here comes the sun, lalalala
//decompose concave into multiple convex polygons and add them
for (int i = 0; i < decomp.size(); i++) {
Ref<ConvexPolygonShape> convex = memnew(ConvexPolygonShape);
PoolVector<Vector3> cp;
int cs = decomp[i].size();
cp.resize(cs * 2);
{
PoolVector<Vector3>::Write w = cp.write();
int idx = 0;
for (int j = 0; j < cs; j++) {
Vector2 d = decomp[i][j];
w[idx++] = Vector3(d.x, d.y, depth * 0.5);
w[idx++] = Vector3(d.x, d.y, -depth * 0.5);
}
}
convex->set_points(cp);
parent->shape_owner_add_shape(owner_id, convex);
parent->shape_owner_set_disabled(owner_id, disabled);
}
}
void CollisionPolygon::_update_in_shape_owner(bool p_xform_only) {
parent->shape_owner_set_transform(owner_id, get_transform());
if (p_xform_only)
return;
parent->shape_owner_set_disabled(owner_id, disabled);
}
void CollisionPolygon::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_PARENTED: {
parent = Object::cast_to<CollisionObject>(get_parent());
if (parent) {
owner_id = parent->create_shape_owner(this);
_build_polygon();
_update_in_shape_owner();
}
} break;
case NOTIFICATION_ENTER_TREE: {
if (parent) {
_update_in_shape_owner();
}
} break;
case NOTIFICATION_LOCAL_TRANSFORM_CHANGED: {
if (parent) {
_update_in_shape_owner(true);
}
} break;
case NOTIFICATION_UNPARENTED: {
if (parent) {
parent->remove_shape_owner(owner_id);
}
owner_id = 0;
parent = NULL;
} break;
}
}
void CollisionPolygon::set_polygon(const Vector<Point2> &p_polygon) {
polygon = p_polygon;
if (parent) {
_build_polygon();
}
update_configuration_warning();
update_gizmo();
}
Vector<Point2> CollisionPolygon::get_polygon() const {
return polygon;
}
AABB CollisionPolygon::get_item_rect() const {
return aabb;
}
void CollisionPolygon::set_depth(float p_depth) {
depth = p_depth;
_build_polygon();
update_gizmo();
}
float CollisionPolygon::get_depth() const {
return depth;
}
void CollisionPolygon::set_disabled(bool p_disabled) {
disabled = p_disabled;
if (parent) {
parent->shape_owner_set_disabled(owner_id, p_disabled);
}
}
bool CollisionPolygon::is_disabled() const {
return disabled;
}
String CollisionPolygon::get_configuration_warning() const {
if (!Object::cast_to<CollisionObject>(get_parent())) {
return TTR("CollisionPolygon only serves to provide a collision shape to a CollisionObject derived node. Please only use it as a child of Area, StaticBody, RigidBody, KinematicBody, etc. to give them a shape.");
}
if (polygon.empty()) {
return TTR("An empty CollisionPolygon has no effect on collision.");
}
return String();
}
void CollisionPolygon::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_depth", "depth"), &CollisionPolygon::set_depth);
ClassDB::bind_method(D_METHOD("get_depth"), &CollisionPolygon::get_depth);
ClassDB::bind_method(D_METHOD("set_polygon", "polygon"), &CollisionPolygon::set_polygon);
ClassDB::bind_method(D_METHOD("get_polygon"), &CollisionPolygon::get_polygon);
ClassDB::bind_method(D_METHOD("set_disabled", "disabled"), &CollisionPolygon::set_disabled);
ClassDB::bind_method(D_METHOD("is_disabled"), &CollisionPolygon::is_disabled);
ADD_PROPERTY(PropertyInfo(Variant::REAL, "depth"), "set_depth", "get_depth");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "disabled"), "set_disabled", "is_disabled");
ADD_PROPERTY(PropertyInfo(Variant::POOL_VECTOR2_ARRAY, "polygon"), "set_polygon", "get_polygon");
}
CollisionPolygon::CollisionPolygon() {
aabb = AABB(Vector3(-1, -1, -1), Vector3(2, 2, 2));
depth = 1.0;
set_notify_local_transform(true);
parent = NULL;
owner_id = 0;
disabled = false;
}