0be6d925dc
Which means that reduz' beloved style which we all became used to will now be changed automatically to remove the first empty line. This makes us lean closer to 1TBS (the one true brace style) instead of hybridating it with some Allman-inspired spacing. There's still the case of braces around single-statement blocks that needs to be addressed (but clang-format can't help with that, but clang-tidy may if we agree about it). Part of #33027.
131 lines
5.3 KiB
C++
131 lines
5.3 KiB
C++
/*************************************************************************/
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/* velocity_tracker_3d.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "velocity_tracker_3d.h"
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#include "core/engine.h"
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void VelocityTracker3D::set_track_physics_step(bool p_track_physics_step) {
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physics_step = p_track_physics_step;
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}
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bool VelocityTracker3D::is_tracking_physics_step() const {
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return physics_step;
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}
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void VelocityTracker3D::update_position(const Vector3 &p_position) {
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PositionHistory ph;
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ph.position = p_position;
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if (physics_step) {
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ph.frame = Engine::get_singleton()->get_physics_frames();
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} else {
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ph.frame = Engine::get_singleton()->get_idle_frame_ticks();
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}
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if (position_history_len == 0 || position_history[0].frame != ph.frame) { //in same frame, use latest
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position_history_len = MIN(position_history.size(), position_history_len + 1);
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for (int i = position_history_len - 1; i > 0; i--) {
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position_history.write[i] = position_history[i - 1];
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}
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}
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position_history.write[0] = ph;
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}
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Vector3 VelocityTracker3D::get_tracked_linear_velocity() const {
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Vector3 linear_velocity;
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float max_time = 1 / 5.0; //maximum time to interpolate a velocity
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Vector3 distance_accum;
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float time_accum = 0.0;
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float base_time = 0.0;
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if (position_history_len) {
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if (physics_step) {
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uint64_t base = Engine::get_singleton()->get_physics_frames();
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base_time = float(base - position_history[0].frame) / Engine::get_singleton()->get_iterations_per_second();
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} else {
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uint64_t base = Engine::get_singleton()->get_idle_frame_ticks();
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base_time = double(base - position_history[0].frame) / 1000000.0;
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}
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}
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for (int i = 0; i < position_history_len - 1; i++) {
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float delta = 0.0;
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uint64_t diff = position_history[i].frame - position_history[i + 1].frame;
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Vector3 distance = position_history[i].position - position_history[i + 1].position;
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if (physics_step) {
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delta = float(diff) / Engine::get_singleton()->get_iterations_per_second();
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} else {
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delta = double(diff) / 1000000.0;
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}
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if (base_time + time_accum + delta > max_time)
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break;
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distance_accum += distance;
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time_accum += delta;
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}
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if (time_accum) {
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linear_velocity = distance_accum / time_accum;
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}
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return linear_velocity;
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}
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void VelocityTracker3D::reset(const Vector3 &p_new_pos) {
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PositionHistory ph;
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ph.position = p_new_pos;
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if (physics_step) {
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ph.frame = Engine::get_singleton()->get_physics_frames();
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} else {
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ph.frame = Engine::get_singleton()->get_idle_frame_ticks();
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}
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position_history.write[0] = ph;
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position_history_len = 1;
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}
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void VelocityTracker3D::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_track_physics_step", "enable"), &VelocityTracker3D::set_track_physics_step);
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ClassDB::bind_method(D_METHOD("is_tracking_physics_step"), &VelocityTracker3D::is_tracking_physics_step);
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ClassDB::bind_method(D_METHOD("update_position", "position"), &VelocityTracker3D::update_position);
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ClassDB::bind_method(D_METHOD("get_tracked_linear_velocity"), &VelocityTracker3D::get_tracked_linear_velocity);
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ClassDB::bind_method(D_METHOD("reset", "position"), &VelocityTracker3D::reset);
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "track_physics_step"), "set_track_physics_step", "is_tracking_physics_step");
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}
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VelocityTracker3D::VelocityTracker3D() {
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position_history.resize(4); // should be configurable
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position_history_len = 0;
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physics_step = false;
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}
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