| 1 | // Copyright (C) 2021 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
| 3 | |
| 4 | #include "qtriggerbody_p.h" |
| 5 | #include "physxnode/qphysxtriggerbody_p.h" |
| 6 | |
| 7 | QT_BEGIN_NAMESPACE |
| 8 | |
| 9 | /*! |
| 10 | \qmltype TriggerBody |
| 11 | \inherits PhysicsNode |
| 12 | \inqmlmodule QtQuick3D.Physics |
| 13 | \since 6.4 |
| 14 | \brief Reports when objects enter a given volume. |
| 15 | |
| 16 | This type defines a trigger body. A trigger body is a body that does not interact |
| 17 | physically but is used to detect when objects intersect with its volume. |
| 18 | */ |
| 19 | |
| 20 | /*! |
| 21 | \qmlproperty int TriggerBody::collisionCount |
| 22 | This property returns the number of bodies currently colliding with the trigger body. |
| 23 | */ |
| 24 | |
| 25 | /*! |
| 26 | \qmlsignal TriggerBody::bodyEntered(PhysicsNode *body) |
| 27 | This signal is emitted when the trigger body is penetrated by the specified \a body. |
| 28 | */ |
| 29 | |
| 30 | /*! |
| 31 | \qmlsignal TriggerBody::bodyExited(PhysicsNode *body) |
| 32 | This signal is emitted when the trigger body is no longer penetrated by the specified \a body. |
| 33 | */ |
| 34 | |
| 35 | QTriggerBody::QTriggerBody() = default; |
| 36 | |
| 37 | void QTriggerBody::registerCollision(QAbstractPhysicsNode *collision) |
| 38 | { |
| 39 | int size = m_collisions.size(); |
| 40 | m_collisions.insert(value: collision); |
| 41 | |
| 42 | if (size != m_collisions.size()) { |
| 43 | emit bodyEntered(body: collision); |
| 44 | emit collisionCountChanged(); |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | void QTriggerBody::deregisterCollision(QAbstractPhysicsNode *collision) |
| 49 | { |
| 50 | int size = m_collisions.size(); |
| 51 | m_collisions.remove(value: collision); |
| 52 | |
| 53 | if (size != m_collisions.size()) { |
| 54 | emit bodyExited(body: collision); |
| 55 | emit collisionCountChanged(); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | int QTriggerBody::collisionCount() const |
| 60 | { |
| 61 | return m_collisions.count(); |
| 62 | } |
| 63 | |
| 64 | QAbstractPhysXNode *QTriggerBody::createPhysXBackend() |
| 65 | { |
| 66 | return new QPhysXTriggerBody(this); |
| 67 | } |
| 68 | |
| 69 | QT_END_NAMESPACE |
| 70 |