33b5c57199
- Renames PackedIntArray to PackedInt32Array. - Renames PackedFloatArray to PackedFloat32Array. - Adds PackedInt64Array and PackedFloat64Array. - Renames Variant::REAL to Variant::FLOAT for consistency. Packed arrays are for storing large amount of data and creating stuff like meshes, buffers. textures, etc. Forcing them to be 64 is a huge waste of memory. That said, many users requested the ability to have 64 bits packed arrays for their games, so this is just an optional added type. For Variant, the float datatype is always 64 bits, and exposed as `float`. We still have `real_t` which is the datatype that can change from 32 to 64 bits depending on a compile flag (not entirely working right now, but that's the idea). It affects math related datatypes and code only. Neither Variant nor PackedArray make use of real_t, which is only intended for math precision, so the term is removed from there to keep only float.
418 lines
12 KiB
C++
418 lines
12 KiB
C++
/*************************************************************************/
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/* path.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 "path.h"
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#include "core/engine.h"
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#include "scene/scene_string_names.h"
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void Path::_notification(int p_what) {
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}
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void Path::_curve_changed() {
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if (is_inside_tree() && Engine::get_singleton()->is_editor_hint())
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update_gizmo();
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if (is_inside_tree()) {
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emit_signal("curve_changed");
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}
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// update the configuration warnings of all children of type PathFollow
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// previously used for PathFollowOriented (now enforced orientation is done in PathFollow)
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if (is_inside_tree()) {
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for (int i = 0; i < get_child_count(); i++) {
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PathFollow *child = Object::cast_to<PathFollow>(get_child(i));
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if (child) {
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child->update_configuration_warning();
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}
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}
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}
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}
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void Path::set_curve(const Ref<Curve3D> &p_curve) {
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if (curve.is_valid()) {
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curve->disconnect_compat("changed", this, "_curve_changed");
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}
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curve = p_curve;
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if (curve.is_valid()) {
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curve->connect_compat("changed", this, "_curve_changed");
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}
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_curve_changed();
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}
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Ref<Curve3D> Path::get_curve() const {
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return curve;
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}
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void Path::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_curve", "curve"), &Path::set_curve);
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ClassDB::bind_method(D_METHOD("get_curve"), &Path::get_curve);
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ClassDB::bind_method(D_METHOD("_curve_changed"), &Path::_curve_changed);
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ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "curve", PROPERTY_HINT_RESOURCE_TYPE, "Curve3D"), "set_curve", "get_curve");
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ADD_SIGNAL(MethodInfo("curve_changed"));
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}
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Path::Path() {
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set_curve(Ref<Curve3D>(memnew(Curve3D))); //create one by default
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}
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//////////////
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void PathFollow::_update_transform() {
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if (!path)
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return;
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Ref<Curve3D> c = path->get_curve();
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if (!c.is_valid())
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return;
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if (delta_offset == 0) {
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return;
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}
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float bl = c->get_baked_length();
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if (bl == 0.0) {
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return;
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}
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float bi = c->get_bake_interval();
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float o_next = offset + bi;
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if (loop) {
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o_next = Math::fposmod(o_next, bl);
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} else if (rotation_mode == ROTATION_ORIENTED && o_next >= bl) {
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o_next = bl;
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}
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Vector3 pos = c->interpolate_baked(offset, cubic);
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Transform t = get_transform();
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// Vector3 pos_offset = Vector3(h_offset, v_offset, 0); not used in all cases
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// will be replaced by "Vector3(h_offset, v_offset, 0)" where it was formerly used
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if (rotation_mode == ROTATION_ORIENTED) {
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Vector3 forward = c->interpolate_baked(o_next, cubic) - pos;
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if (forward.length_squared() < CMP_EPSILON2)
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forward = Vector3(0, 0, 1);
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else
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forward.normalize();
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Vector3 up = c->interpolate_baked_up_vector(offset, true);
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if (o_next < offset) {
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Vector3 up1 = c->interpolate_baked_up_vector(o_next, true);
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Vector3 axis = up.cross(up1);
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if (axis.length_squared() < CMP_EPSILON2)
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axis = forward;
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else
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axis.normalize();
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up.rotate(axis, up.angle_to(up1) * 0.5f);
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}
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Vector3 scale = t.basis.get_scale();
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Vector3 sideways = up.cross(forward).normalized();
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up = forward.cross(sideways).normalized();
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t.basis.set(sideways, up, forward);
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t.basis.scale_local(scale);
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t.origin = pos + sideways * h_offset + up * v_offset;
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} else if (rotation_mode != ROTATION_NONE) {
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// perform parallel transport
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//
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// see C. Dougan, The Parallel Transport Frame, Game Programming Gems 2 for example
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// for a discussion about why not Frenet frame.
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t.origin = pos;
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Vector3 t_prev = (pos - c->interpolate_baked(offset - delta_offset, cubic)).normalized();
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Vector3 t_cur = (c->interpolate_baked(offset + delta_offset, cubic) - pos).normalized();
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Vector3 axis = t_prev.cross(t_cur);
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float dot = t_prev.dot(t_cur);
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float angle = Math::acos(CLAMP(dot, -1, 1));
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if (likely(!Math::is_zero_approx(angle))) {
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if (rotation_mode == ROTATION_Y) {
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// assuming we're referring to global Y-axis. is this correct?
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axis.x = 0;
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axis.z = 0;
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} else if (rotation_mode == ROTATION_XY) {
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axis.z = 0;
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} else if (rotation_mode == ROTATION_XYZ) {
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// all components are allowed
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}
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if (likely(!Math::is_zero_approx(axis.length()))) {
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t.rotate_basis(axis.normalized(), angle);
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}
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}
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// do the additional tilting
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float tilt_angle = c->interpolate_baked_tilt(offset);
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Vector3 tilt_axis = t_cur; // not sure what tilt is supposed to do, is this correct??
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if (likely(!Math::is_zero_approx(Math::abs(tilt_angle)))) {
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if (rotation_mode == ROTATION_Y) {
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tilt_axis.x = 0;
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tilt_axis.z = 0;
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} else if (rotation_mode == ROTATION_XY) {
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tilt_axis.z = 0;
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} else if (rotation_mode == ROTATION_XYZ) {
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// all components are allowed
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}
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if (likely(!Math::is_zero_approx(tilt_axis.length()))) {
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t.rotate_basis(tilt_axis.normalized(), tilt_angle);
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}
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}
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t.translate(Vector3(h_offset, v_offset, 0));
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} else {
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t.origin = pos + Vector3(h_offset, v_offset, 0);
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}
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set_transform(t);
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}
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void PathFollow::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_ENTER_TREE: {
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Node *parent = get_parent();
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if (parent) {
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path = Object::cast_to<Path>(parent);
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if (path) {
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_update_transform();
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}
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}
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} break;
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case NOTIFICATION_EXIT_TREE: {
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path = NULL;
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} break;
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}
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}
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void PathFollow::set_cubic_interpolation(bool p_enable) {
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cubic = p_enable;
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}
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bool PathFollow::get_cubic_interpolation() const {
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return cubic;
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}
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void PathFollow::_validate_property(PropertyInfo &property) const {
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if (property.name == "offset") {
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float max = 10000;
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if (path && path->get_curve().is_valid())
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max = path->get_curve()->get_baked_length();
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property.hint_string = "0," + rtos(max) + ",0.01,or_lesser,or_greater";
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}
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}
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String PathFollow::get_configuration_warning() const {
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if (!is_visible_in_tree() || !is_inside_tree())
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return String();
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if (!Object::cast_to<Path>(get_parent())) {
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return TTR("PathFollow only works when set as a child of a Path node.");
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} else {
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Path *path = Object::cast_to<Path>(get_parent());
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if (path->get_curve().is_valid() && !path->get_curve()->is_up_vector_enabled() && rotation_mode == ROTATION_ORIENTED) {
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return TTR("PathFollow's ROTATION_ORIENTED requires \"Up Vector\" to be enabled in its parent Path's Curve resource.");
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}
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}
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return String();
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}
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void PathFollow::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_offset", "offset"), &PathFollow::set_offset);
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ClassDB::bind_method(D_METHOD("get_offset"), &PathFollow::get_offset);
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ClassDB::bind_method(D_METHOD("set_h_offset", "h_offset"), &PathFollow::set_h_offset);
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ClassDB::bind_method(D_METHOD("get_h_offset"), &PathFollow::get_h_offset);
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ClassDB::bind_method(D_METHOD("set_v_offset", "v_offset"), &PathFollow::set_v_offset);
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ClassDB::bind_method(D_METHOD("get_v_offset"), &PathFollow::get_v_offset);
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ClassDB::bind_method(D_METHOD("set_unit_offset", "unit_offset"), &PathFollow::set_unit_offset);
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ClassDB::bind_method(D_METHOD("get_unit_offset"), &PathFollow::get_unit_offset);
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ClassDB::bind_method(D_METHOD("set_rotation_mode", "rotation_mode"), &PathFollow::set_rotation_mode);
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ClassDB::bind_method(D_METHOD("get_rotation_mode"), &PathFollow::get_rotation_mode);
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ClassDB::bind_method(D_METHOD("set_cubic_interpolation", "enable"), &PathFollow::set_cubic_interpolation);
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ClassDB::bind_method(D_METHOD("get_cubic_interpolation"), &PathFollow::get_cubic_interpolation);
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ClassDB::bind_method(D_METHOD("set_loop", "loop"), &PathFollow::set_loop);
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ClassDB::bind_method(D_METHOD("has_loop"), &PathFollow::has_loop);
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "offset", PROPERTY_HINT_RANGE, "0,10000,0.01,or_lesser,or_greater"), "set_offset", "get_offset");
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "unit_offset", PROPERTY_HINT_RANGE, "0,1,0.0001,or_lesser,or_greater", PROPERTY_USAGE_EDITOR), "set_unit_offset", "get_unit_offset");
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "h_offset"), "set_h_offset", "get_h_offset");
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "v_offset"), "set_v_offset", "get_v_offset");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "rotation_mode", PROPERTY_HINT_ENUM, "None,Y,XY,XYZ,Oriented"), "set_rotation_mode", "get_rotation_mode");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "cubic_interp"), "set_cubic_interpolation", "get_cubic_interpolation");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "loop"), "set_loop", "has_loop");
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BIND_ENUM_CONSTANT(ROTATION_NONE);
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BIND_ENUM_CONSTANT(ROTATION_Y);
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BIND_ENUM_CONSTANT(ROTATION_XY);
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BIND_ENUM_CONSTANT(ROTATION_XYZ);
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BIND_ENUM_CONSTANT(ROTATION_ORIENTED);
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}
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void PathFollow::set_offset(float p_offset) {
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delta_offset = p_offset - offset;
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offset = p_offset;
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if (path) {
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if (path->get_curve().is_valid() && path->get_curve()->get_baked_length()) {
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float path_length = path->get_curve()->get_baked_length();
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if (loop) {
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while (offset > path_length)
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offset -= path_length;
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while (offset < 0)
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offset += path_length;
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} else {
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offset = CLAMP(offset, 0, path_length);
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}
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}
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_update_transform();
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}
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_change_notify("offset");
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_change_notify("unit_offset");
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}
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void PathFollow::set_h_offset(float p_h_offset) {
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h_offset = p_h_offset;
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if (path)
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_update_transform();
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}
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float PathFollow::get_h_offset() const {
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return h_offset;
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}
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void PathFollow::set_v_offset(float p_v_offset) {
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v_offset = p_v_offset;
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if (path)
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_update_transform();
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}
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float PathFollow::get_v_offset() const {
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return v_offset;
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}
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float PathFollow::get_offset() const {
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return offset;
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}
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void PathFollow::set_unit_offset(float p_unit_offset) {
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if (path && path->get_curve().is_valid() && path->get_curve()->get_baked_length())
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set_offset(p_unit_offset * path->get_curve()->get_baked_length());
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}
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float PathFollow::get_unit_offset() const {
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if (path && path->get_curve().is_valid() && path->get_curve()->get_baked_length())
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return get_offset() / path->get_curve()->get_baked_length();
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else
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return 0;
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}
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void PathFollow::set_rotation_mode(RotationMode p_rotation_mode) {
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rotation_mode = p_rotation_mode;
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update_configuration_warning();
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_update_transform();
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}
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PathFollow::RotationMode PathFollow::get_rotation_mode() const {
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return rotation_mode;
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}
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void PathFollow::set_loop(bool p_loop) {
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loop = p_loop;
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}
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bool PathFollow::has_loop() const {
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return loop;
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}
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PathFollow::PathFollow() {
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offset = 0;
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delta_offset = 0;
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h_offset = 0;
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v_offset = 0;
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path = NULL;
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rotation_mode = ROTATION_XYZ;
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cubic = true;
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loop = true;
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}
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