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@@ -0,0 +1,90 @@
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+// Filename: collisionHandlerEvent.cxx
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+// Created by: drose (16Mar02)
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+//
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+////////////////////////////////////////////////////////////////////
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+//
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+// PANDA 3D SOFTWARE
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+// Copyright (c) Carnegie Mellon University. All rights reserved.
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+//
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+// All use of this software is subject to the terms of the revised BSD
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+// license. You should have received a copy of this license along
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+// with this source code in a file named "LICENSE."
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+//
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+////////////////////////////////////////////////////////////////////
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+
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+
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+#include "collisionHandlerHighestEvent.h"
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+#include "config_collide.h"
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+
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+#include "eventParameter.h"
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+#include "throw_event.h"
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+
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+
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+TypeHandle CollisionHandlerHighestEvent::_type_handle;
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+
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+////////////////////////////////////////////////////////////////////
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+// Function: CollisionHandlerEvent::Constructor
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+// Access: Public
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+// Description: The default CollisionHandlerEvent will throw no
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+// events. Its pattern strings must first be set via a
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+// call to add_in_pattern() and/or add_out_pattern().
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+////////////////////////////////////////////////////////////////////
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+CollisionHandlerHighestEvent::
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+CollisionHandlerHighestEvent() {
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+}
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+
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+////////////////////////////////////////////////////////////////////
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+// Function: CollisionHandlerEvent::begin_group
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+// Access: Public, Virtual
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+// Description: Will be called by the CollisionTraverser before a new
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+// traversal is begun. It instructs the handler to
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+// reset itself in preparation for a number of
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+// CollisionEntries to be sent.
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+////////////////////////////////////////////////////////////////////
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+void CollisionHandlerHighestEvent::
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+begin_group() {
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+ if (collide_cat.is_spam()) {
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+ collide_cat.spam()
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+ << "begin_group.\n";
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+ }
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+ _last_colliding.clear();
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+ if(_closest_collider)
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+ bool inserted = _last_colliding.insert(_closest_collider).second;
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+ _current_colliding.clear();
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+ _collider_distance = 10000000000;
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+ _closest_collider = NULL;
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+}
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+
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+////////////////////////////////////////////////////////////////////
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+// Function: CollisionHandlerEvent::add_entry
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+// Access: Public, Virtual
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+// Description: Called between a begin_group() .. end_group()
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+// sequence for each collision that is detected.
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+////////////////////////////////////////////////////////////////////
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+void CollisionHandlerHighestEvent::
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+add_entry(CollisionEntry *entry) {
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+ nassertv(entry != (CollisionEntry *)NULL);
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+ LVector3f vec =
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+ entry->get_surface_point(entry->get_from_node_path()) -
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+ entry->get_from()->get_collision_origin();
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+ double dist = vec.length_squared();
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+ if(dist < _collider_distance) {
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+ _collider_distance = dist;
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+ _closest_collider = entry;
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+ }
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+}
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+
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+////////////////////////////////////////////////////////////////////
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+// Function: CollisionHandlerPhysical::end_group
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+// Access: Public, Virtual
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+// Description: Called by the CollisionTraverser at the completion of
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+// all collision detections for this traversal. It
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+// should do whatever finalization is required for the
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+// handler.
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+////////////////////////////////////////////////////////////////////
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+bool CollisionHandlerHighestEvent::
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+end_group() {
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+ if(_closest_collider)
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+ bool inserted = _current_colliding.insert(_closest_collider).second;
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+ return CollisionHandlerEvent::end_group();
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+}
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Zachary Pavlov