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- /*************************************************************************/
- /* path_2d.cpp */
- /*************************************************************************/
- /* This file is part of: */
- /* GODOT ENGINE */
- /* https://godotengine.org */
- /*************************************************************************/
- /* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
- /* Copyright (c) 2014-2017 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 "path_2d.h"
- #include "engine.h"
- #include "scene/scene_string_names.h"
- void Path2D::_notification(int p_what) {
- if (p_what == NOTIFICATION_DRAW && curve.is_valid()) {
- //draw the curve!!
- if (!Engine::get_singleton()->is_editor_hint() && !get_tree()->is_debugging_navigation_hint()) {
- return;
- }
- for (int i = 0; i < curve->get_point_count(); i++) {
- Vector2 prev_p = curve->get_point_position(i);
- for (int j = 1; j <= 8; j++) {
- real_t frac = j / 8.0;
- Vector2 p = curve->interpolate(i, frac);
- draw_line(prev_p, p, Color(0.5, 0.6, 1.0, 0.7), 2);
- prev_p = p;
- }
- }
- }
- }
- void Path2D::_curve_changed() {
- if (is_inside_tree() && Engine::get_singleton()->is_editor_hint())
- update();
- }
- void Path2D::set_curve(const Ref<Curve2D> &p_curve) {
- if (curve.is_valid()) {
- curve->disconnect("changed", this, "_curve_changed");
- }
- curve = p_curve;
- if (curve.is_valid()) {
- curve->connect("changed", this, "_curve_changed");
- }
- _curve_changed();
- }
- Ref<Curve2D> Path2D::get_curve() const {
- return curve;
- }
- void Path2D::_bind_methods() {
- ClassDB::bind_method(D_METHOD("set_curve", "curve"), &Path2D::set_curve);
- ClassDB::bind_method(D_METHOD("get_curve"), &Path2D::get_curve);
- ClassDB::bind_method(D_METHOD("_curve_changed"), &Path2D::_curve_changed);
- ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "curve", PROPERTY_HINT_RESOURCE_TYPE, "Curve2D"), "set_curve", "get_curve");
- }
- Path2D::Path2D() {
- set_curve(Ref<Curve2D>(memnew(Curve2D))); //create one by default
- }
- /////////////////////////////////////////////////////////////////////////////////
- void PathFollow2D::_update_transform() {
- if (!path)
- return;
- Ref<Curve2D> c = path->get_curve();
- if (!c.is_valid())
- return;
- float o = offset;
- if (loop)
- o = Math::fposmod(o, c->get_baked_length());
- Vector2 pos = c->interpolate_baked(o, cubic);
- if (rotate) {
- Vector2 n = (c->interpolate_baked(o + lookahead, cubic) - pos).normalized();
- Vector2 t = -n.tangent();
- pos += n * h_offset;
- pos += t * v_offset;
- set_rotation(t.angle());
- } else {
- pos.x += h_offset;
- pos.y += v_offset;
- }
- set_position(pos);
- }
- void PathFollow2D::_notification(int p_what) {
- switch (p_what) {
- case NOTIFICATION_ENTER_TREE: {
- path = Object::cast_to<Path2D>(get_parent());
- if (path) {
- _update_transform();
- }
- } break;
- case NOTIFICATION_EXIT_TREE: {
- path = NULL;
- } break;
- }
- }
- void PathFollow2D::set_cubic_interpolation(bool p_enable) {
- cubic = p_enable;
- }
- bool PathFollow2D::get_cubic_interpolation() const {
- return cubic;
- }
- bool PathFollow2D::_set(const StringName &p_name, const Variant &p_value) {
- if (p_name == SceneStringNames::get_singleton()->offset) {
- set_offset(p_value);
- } else if (p_name == SceneStringNames::get_singleton()->unit_offset) {
- set_unit_offset(p_value);
- } else if (p_name == SceneStringNames::get_singleton()->rotate) {
- set_rotate(p_value);
- } else if (p_name == SceneStringNames::get_singleton()->v_offset) {
- set_v_offset(p_value);
- } else if (p_name == SceneStringNames::get_singleton()->h_offset) {
- set_h_offset(p_value);
- } else if (String(p_name) == "cubic_interp") {
- set_cubic_interpolation(p_value);
- } else if (String(p_name) == "loop") {
- set_loop(p_value);
- } else if (String(p_name) == "lookahead") {
- set_lookahead(p_value);
- } else
- return false;
- return true;
- }
- bool PathFollow2D::_get(const StringName &p_name, Variant &r_ret) const {
- if (p_name == SceneStringNames::get_singleton()->offset) {
- r_ret = get_offset();
- } else if (p_name == SceneStringNames::get_singleton()->unit_offset) {
- r_ret = get_unit_offset();
- } else if (p_name == SceneStringNames::get_singleton()->rotate) {
- r_ret = is_rotating();
- } else if (p_name == SceneStringNames::get_singleton()->v_offset) {
- r_ret = get_v_offset();
- } else if (p_name == SceneStringNames::get_singleton()->h_offset) {
- r_ret = get_h_offset();
- } else if (String(p_name) == "cubic_interp") {
- r_ret = cubic;
- } else if (String(p_name) == "loop") {
- r_ret = loop;
- } else if (String(p_name) == "lookahead") {
- r_ret = lookahead;
- } else
- return false;
- return true;
- }
- void PathFollow2D::_get_property_list(List<PropertyInfo> *p_list) const {
- float max = 10000;
- if (path && path->get_curve().is_valid())
- max = path->get_curve()->get_baked_length();
- p_list->push_back(PropertyInfo(Variant::REAL, "offset", PROPERTY_HINT_RANGE, "0," + rtos(max) + ",0.01"));
- p_list->push_back(PropertyInfo(Variant::REAL, "unit_offset", PROPERTY_HINT_RANGE, "0,1,0.0001", PROPERTY_USAGE_EDITOR));
- p_list->push_back(PropertyInfo(Variant::REAL, "h_offset"));
- p_list->push_back(PropertyInfo(Variant::REAL, "v_offset"));
- p_list->push_back(PropertyInfo(Variant::BOOL, "rotate"));
- p_list->push_back(PropertyInfo(Variant::BOOL, "cubic_interp"));
- p_list->push_back(PropertyInfo(Variant::BOOL, "loop"));
- p_list->push_back(PropertyInfo(Variant::REAL, "lookahead", PROPERTY_HINT_RANGE, "0.001,1024.0,0.001"));
- }
- String PathFollow2D::get_configuration_warning() const {
- if (!is_visible_in_tree() || !is_inside_tree())
- return String();
- if (!Object::cast_to<Path2D>(get_parent())) {
- return TTR("PathFollow2D only works when set as a child of a Path2D node.");
- }
- return String();
- }
- void PathFollow2D::_bind_methods() {
- ClassDB::bind_method(D_METHOD("set_offset", "offset"), &PathFollow2D::set_offset);
- ClassDB::bind_method(D_METHOD("get_offset"), &PathFollow2D::get_offset);
- ClassDB::bind_method(D_METHOD("set_h_offset", "h_offset"), &PathFollow2D::set_h_offset);
- ClassDB::bind_method(D_METHOD("get_h_offset"), &PathFollow2D::get_h_offset);
- ClassDB::bind_method(D_METHOD("set_v_offset", "v_offset"), &PathFollow2D::set_v_offset);
- ClassDB::bind_method(D_METHOD("get_v_offset"), &PathFollow2D::get_v_offset);
- ClassDB::bind_method(D_METHOD("set_unit_offset", "unit_offset"), &PathFollow2D::set_unit_offset);
- ClassDB::bind_method(D_METHOD("get_unit_offset"), &PathFollow2D::get_unit_offset);
- ClassDB::bind_method(D_METHOD("set_rotate", "enable"), &PathFollow2D::set_rotate);
- ClassDB::bind_method(D_METHOD("is_rotating"), &PathFollow2D::is_rotating);
- ClassDB::bind_method(D_METHOD("set_cubic_interpolation", "enable"), &PathFollow2D::set_cubic_interpolation);
- ClassDB::bind_method(D_METHOD("get_cubic_interpolation"), &PathFollow2D::get_cubic_interpolation);
- ClassDB::bind_method(D_METHOD("set_loop", "loop"), &PathFollow2D::set_loop);
- ClassDB::bind_method(D_METHOD("has_loop"), &PathFollow2D::has_loop);
- }
- void PathFollow2D::set_offset(float p_offset) {
- offset = p_offset;
- if (path)
- _update_transform();
- _change_notify("offset");
- _change_notify("unit_offset");
- }
- void PathFollow2D::set_h_offset(float p_h_offset) {
- h_offset = p_h_offset;
- if (path)
- _update_transform();
- }
- float PathFollow2D::get_h_offset() const {
- return h_offset;
- }
- void PathFollow2D::set_v_offset(float p_v_offset) {
- v_offset = p_v_offset;
- if (path)
- _update_transform();
- }
- float PathFollow2D::get_v_offset() const {
- return v_offset;
- }
- float PathFollow2D::get_offset() const {
- return offset;
- }
- void PathFollow2D::set_unit_offset(float p_unit_offset) {
- if (path && path->get_curve().is_valid() && path->get_curve()->get_baked_length())
- set_offset(p_unit_offset * path->get_curve()->get_baked_length());
- }
- float PathFollow2D::get_unit_offset() const {
- if (path && path->get_curve().is_valid() && path->get_curve()->get_baked_length())
- return get_offset() / path->get_curve()->get_baked_length();
- else
- return 0;
- }
- void PathFollow2D::set_lookahead(float p_lookahead) {
- lookahead = p_lookahead;
- }
- float PathFollow2D::get_lookahead() const {
- return lookahead;
- }
- void PathFollow2D::set_rotate(bool p_rotate) {
- rotate = p_rotate;
- _update_transform();
- }
- bool PathFollow2D::is_rotating() const {
- return rotate;
- }
- void PathFollow2D::set_loop(bool p_loop) {
- loop = p_loop;
- }
- bool PathFollow2D::has_loop() const {
- return loop;
- }
- PathFollow2D::PathFollow2D() {
- offset = 0;
- h_offset = 0;
- v_offset = 0;
- path = NULL;
- rotate = true;
- cubic = true;
- loop = true;
- lookahead = 4;
- }
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