/*************************************************************************/ /* collision_polygon_3d.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #include "collision_polygon_3d.h" #include "collision_object_3d.h" #include "core/math/geometry_2d.h" #include "scene/resources/concave_polygon_shape_3d.h" #include "scene/resources/convex_polygon_shape_3d.h" void CollisionPolygon3D::_build_polygon() { if (!parent) { return; } parent->shape_owner_clear_shapes(owner_id); if (polygon.size() == 0) { return; } Vector<Vector<Vector2>> decomp = Geometry2D::decompose_polygon_in_convex(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<ConvexPolygonShape3D> convex = memnew(ConvexPolygonShape3D); Vector<Vector3> cp; int cs = decomp[i].size(); cp.resize(cs * 2); { Vector3 *w = cp.ptrw(); 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 CollisionPolygon3D::_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 CollisionPolygon3D::_notification(int p_what) { switch (p_what) { case NOTIFICATION_PARENTED: { parent = Object::cast_to<CollisionObject3D>(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 = nullptr; } break; } } void CollisionPolygon3D::set_polygon(const Vector<Point2> &p_polygon) { polygon = p_polygon; if (parent) { _build_polygon(); } update_configuration_warning(); update_gizmo(); } Vector<Point2> CollisionPolygon3D::get_polygon() const { return polygon; } AABB CollisionPolygon3D::get_item_rect() const { return aabb; } void CollisionPolygon3D::set_depth(real_t p_depth) { depth = p_depth; _build_polygon(); update_gizmo(); } real_t CollisionPolygon3D::get_depth() const { return depth; } void CollisionPolygon3D::set_disabled(bool p_disabled) { disabled = p_disabled; update_gizmo(); if (parent) { parent->shape_owner_set_disabled(owner_id, p_disabled); } } bool CollisionPolygon3D::is_disabled() const { return disabled; } String CollisionPolygon3D::get_configuration_warning() const { String warning = Node3D::get_configuration_warning(); if (!Object::cast_to<CollisionObject3D>(get_parent())) { if (!warning.is_empty()) { warning += "\n\n"; } warning += TTR("CollisionPolygon3D only serves to provide a collision shape to a CollisionObject3D derived node. Please only use it as a child of Area3D, StaticBody3D, RigidBody3D, KinematicBody3D, etc. to give them a shape."); } if (polygon.is_empty()) { if (!warning.is_empty()) { warning += "\n\n"; } warning += TTR("An empty CollisionPolygon3D has no effect on collision."); } return warning; } bool CollisionPolygon3D::_is_editable_3d_polygon() const { return true; } void CollisionPolygon3D::_bind_methods() { ClassDB::bind_method(D_METHOD("set_depth", "depth"), &CollisionPolygon3D::set_depth); ClassDB::bind_method(D_METHOD("get_depth"), &CollisionPolygon3D::get_depth); ClassDB::bind_method(D_METHOD("set_polygon", "polygon"), &CollisionPolygon3D::set_polygon); ClassDB::bind_method(D_METHOD("get_polygon"), &CollisionPolygon3D::get_polygon); ClassDB::bind_method(D_METHOD("set_disabled", "disabled"), &CollisionPolygon3D::set_disabled); ClassDB::bind_method(D_METHOD("is_disabled"), &CollisionPolygon3D::is_disabled); ClassDB::bind_method(D_METHOD("_is_editable_3d_polygon"), &CollisionPolygon3D::_is_editable_3d_polygon); ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "depth"), "set_depth", "get_depth"); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "disabled"), "set_disabled", "is_disabled"); ADD_PROPERTY(PropertyInfo(Variant::PACKED_VECTOR2_ARRAY, "polygon"), "set_polygon", "get_polygon"); } CollisionPolygon3D::CollisionPolygon3D() { aabb = AABB(Vector3(-1, -1, -1), Vector3(2, 2, 2)); depth = 1.0; set_notify_local_transform(true); parent = nullptr; owner_id = 0; disabled = false; }