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380 lines
9.9 KiB
C++
380 lines
9.9 KiB
C++
/*************************************************************************/
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/* path_2d.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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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_2d.h"
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#include "scene/scene_string_names.h"
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void Path2D::_notification(int p_what) {
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if (p_what==NOTIFICATION_DRAW && curve.is_valid()) {
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//draw the curve!!
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if (!get_tree()->is_editor_hint() && !get_tree()->is_debugging_navigation_hint()) {
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return;
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}
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for(int i=0;i<curve->get_point_count();i++) {
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Vector2 prev_p=curve->get_point_pos(i);
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for(int j=1;j<=8;j++) {
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real_t frac = j/8.0;
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Vector2 p = curve->interpolate(i,frac);
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draw_line(prev_p,p,Color(0.5,0.6,1.0,0.7),2);
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prev_p=p;
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}
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}
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}
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}
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void Path2D::_curve_changed() {
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if (is_inside_tree() && get_tree()->is_editor_hint())
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update();
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}
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void Path2D::set_curve(const Ref<Curve2D>& p_curve) {
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if (curve.is_valid()) {
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curve->disconnect("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("changed",this,"_curve_changed");
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}
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_curve_changed();
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}
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Ref<Curve2D> Path2D::get_curve() const{
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return curve;
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}
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void Path2D::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_curve","curve:Curve2D"),&Path2D::set_curve);
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ClassDB::bind_method(D_METHOD("get_curve:Curve2D","curve"),&Path2D::get_curve);
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ClassDB::bind_method(D_METHOD("_curve_changed"),&Path2D::_curve_changed);
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ADD_PROPERTY( PropertyInfo( Variant::OBJECT, "curve", PROPERTY_HINT_RESOURCE_TYPE, "Curve2D"), "set_curve","get_curve");
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}
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Path2D::Path2D() {
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set_curve(Ref<Curve2D>( memnew( Curve2D ))); //create one by default
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}
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/////////////////////////////////////////////////////////////////////////////////
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void PathFollow2D::_update_transform() {
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if (!path)
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return;
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Ref<Curve2D> c =path->get_curve();
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if (!c.is_valid())
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return;
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float o = offset;
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if (loop)
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o=Math::fposmod(o,c->get_baked_length());
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Vector2 pos = c->interpolate_baked(o,cubic);
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if (rotate) {
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Vector2 n = (c->interpolate_baked(o+lookahead,cubic)-pos).normalized();
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Vector2 t = -n.tangent();
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pos+=n*h_offset;
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pos+=t*v_offset;
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set_rotation(t.angle());
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} else {
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pos.x+=h_offset;
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pos.y+=v_offset;
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}
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set_position(pos);
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}
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void PathFollow2D::_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=parent->cast_to<Path2D>();
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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 PathFollow2D::set_cubic_interpolation(bool p_enable) {
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cubic=p_enable;
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}
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bool PathFollow2D::get_cubic_interpolation() const {
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return cubic;
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}
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bool PathFollow2D::_set(const StringName& p_name, const Variant& p_value) {
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if (p_name==SceneStringNames::get_singleton()->offset) {
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set_offset(p_value);
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} else if (p_name==SceneStringNames::get_singleton()->unit_offset) {
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set_unit_offset(p_value);
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} else if (p_name==SceneStringNames::get_singleton()->rotate) {
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set_rotate(p_value);
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} else if (p_name==SceneStringNames::get_singleton()->v_offset) {
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set_v_offset(p_value);
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} else if (p_name==SceneStringNames::get_singleton()->h_offset) {
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set_h_offset(p_value);
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} else if (String(p_name)=="cubic_interp") {
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set_cubic_interpolation(p_value);
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} else if (String(p_name)=="loop") {
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set_loop(p_value);
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} else if (String(p_name)=="lookahead") {
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set_lookahead(p_value);
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} else
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return false;
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return true;
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}
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bool PathFollow2D::_get(const StringName& p_name,Variant &r_ret) const{
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if (p_name==SceneStringNames::get_singleton()->offset) {
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r_ret=get_offset();
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} else if (p_name==SceneStringNames::get_singleton()->unit_offset) {
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r_ret=get_unit_offset();
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} else if (p_name==SceneStringNames::get_singleton()->rotate) {
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r_ret=is_rotating();
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} else if (p_name==SceneStringNames::get_singleton()->v_offset) {
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r_ret=get_v_offset();
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} else if (p_name==SceneStringNames::get_singleton()->h_offset) {
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r_ret=get_h_offset();
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} else if (String(p_name)=="cubic_interp") {
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r_ret=cubic;
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} else if (String(p_name)=="loop") {
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r_ret=loop;
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} else if (String(p_name)=="lookahead") {
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r_ret=lookahead;
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} else
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return false;
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return true;
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}
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void PathFollow2D::_get_property_list( List<PropertyInfo> *p_list) const{
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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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p_list->push_back( PropertyInfo( Variant::REAL, "offset", PROPERTY_HINT_RANGE,"0,"+rtos(max)+",0.01"));
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p_list->push_back( PropertyInfo( Variant::REAL, "unit_offset", PROPERTY_HINT_RANGE,"0,1,0.0001",PROPERTY_USAGE_EDITOR));
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p_list->push_back( PropertyInfo( Variant::REAL, "h_offset") );
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p_list->push_back( PropertyInfo( Variant::REAL, "v_offset") );
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p_list->push_back( PropertyInfo( Variant::BOOL, "rotate") );
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p_list->push_back( PropertyInfo( Variant::BOOL, "cubic_interp"));
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p_list->push_back( PropertyInfo( Variant::BOOL, "loop"));
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p_list->push_back( PropertyInfo( Variant::REAL, "lookahead",PROPERTY_HINT_RANGE,"0.001,1024.0,0.001"));
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}
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String PathFollow2D::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 (!get_parent() || !get_parent()->cast_to<Path2D>()) {
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return TTR("PathFollow2D only works when set as a child of a Path2D node.");
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}
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return String();
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}
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void PathFollow2D::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_offset","offset"),&PathFollow2D::set_offset);
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ClassDB::bind_method(D_METHOD("get_offset"),&PathFollow2D::get_offset);
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ClassDB::bind_method(D_METHOD("set_h_offset","h_offset"),&PathFollow2D::set_h_offset);
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ClassDB::bind_method(D_METHOD("get_h_offset"),&PathFollow2D::get_h_offset);
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ClassDB::bind_method(D_METHOD("set_v_offset","v_offset"),&PathFollow2D::set_v_offset);
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ClassDB::bind_method(D_METHOD("get_v_offset"),&PathFollow2D::get_v_offset);
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ClassDB::bind_method(D_METHOD("set_unit_offset","unit_offset"),&PathFollow2D::set_unit_offset);
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ClassDB::bind_method(D_METHOD("get_unit_offset"),&PathFollow2D::get_unit_offset);
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ClassDB::bind_method(D_METHOD("set_rotate","enable"),&PathFollow2D::set_rotate);
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ClassDB::bind_method(D_METHOD("is_rotating"),&PathFollow2D::is_rotating);
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ClassDB::bind_method(D_METHOD("set_cubic_interpolation","enable"),&PathFollow2D::set_cubic_interpolation);
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ClassDB::bind_method(D_METHOD("get_cubic_interpolation"),&PathFollow2D::get_cubic_interpolation);
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ClassDB::bind_method(D_METHOD("set_loop","loop"),&PathFollow2D::set_loop);
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ClassDB::bind_method(D_METHOD("has_loop"),&PathFollow2D::has_loop);
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}
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void PathFollow2D::set_offset(float p_offset) {
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offset=p_offset;
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if (path)
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_update_transform();
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_change_notify("offset");
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_change_notify("unit_offset");
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}
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void PathFollow2D::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 PathFollow2D::get_h_offset() const {
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return h_offset;
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}
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void PathFollow2D::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 PathFollow2D::get_v_offset() const {
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return v_offset;
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}
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float PathFollow2D::get_offset() const{
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return offset;
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}
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void PathFollow2D::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 PathFollow2D::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 PathFollow2D::set_lookahead(float p_lookahead) {
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lookahead=p_lookahead;
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}
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float PathFollow2D::get_lookahead() const{
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return lookahead;
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}
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void PathFollow2D::set_rotate(bool p_rotate) {
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rotate=p_rotate;
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_update_transform();
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}
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bool PathFollow2D::is_rotating() const {
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return rotate;
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}
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void PathFollow2D::set_loop(bool p_loop) {
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loop=p_loop;
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}
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bool PathFollow2D::has_loop() const{
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return loop;
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}
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PathFollow2D::PathFollow2D() {
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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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rotate=true;
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cubic=true;
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loop=true;
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lookahead=4;
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}
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