mirror of
https://github.com/godotengine/godot.git
synced 2024-11-11 06:33:10 +00:00
406 lines
11 KiB
C++
406 lines
11 KiB
C++
/*************************************************************************/
|
|
/* path_2d.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2018 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"
|
|
|
|
#ifdef TOOLS_ENABLED
|
|
#include "editor/editor_scale.h"
|
|
#endif
|
|
|
|
Rect2 Path2D::_edit_get_rect() const {
|
|
|
|
if (!curve.is_valid() || curve->get_point_count() == 0)
|
|
return Rect2(0, 0, 0, 0);
|
|
|
|
Rect2 aabb = Rect2(curve->get_point_position(0), Vector2(0, 0));
|
|
|
|
for (int i = 0; i < curve->get_point_count(); i++) {
|
|
|
|
for (int j = 0; j <= 8; j++) {
|
|
|
|
real_t frac = j / 8.0;
|
|
Vector2 p = curve->interpolate(i, frac);
|
|
aabb.expand_to(p);
|
|
}
|
|
}
|
|
|
|
return aabb;
|
|
}
|
|
|
|
bool Path2D::_edit_use_rect() const {
|
|
return true;
|
|
}
|
|
|
|
bool Path2D::_edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const {
|
|
|
|
for (int i = 0; i < curve->get_point_count(); i++) {
|
|
Vector2 s[2];
|
|
s[0] = curve->get_point_position(i);
|
|
|
|
for (int j = 1; j <= 8; j++) {
|
|
real_t frac = j / 8.0;
|
|
s[1] = curve->interpolate(i, frac);
|
|
|
|
Vector2 p = Geometry::get_closest_point_to_segment_2d(p_point, s);
|
|
if (p.distance_to(p_point) <= p_tolerance)
|
|
return true;
|
|
|
|
s[0] = s[1];
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
#if TOOLS_ENABLED
|
|
const float line_width = 2 * EDSCALE;
|
|
#else
|
|
const float line_width = 2;
|
|
#endif
|
|
const Color color = Color(1.0, 1.0, 1.0, 1.0);
|
|
|
|
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, line_width);
|
|
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
|
|
set_self_modulate(Color(0.5, 0.6, 1.0, 0.7));
|
|
}
|
|
|
|
/////////////////////////////////////////////////////////////////////////////////
|
|
|
|
void PathFollow2D::_update_transform() {
|
|
|
|
if (!path)
|
|
return;
|
|
|
|
Ref<Curve2D> c = path->get_curve();
|
|
if (!c.is_valid())
|
|
return;
|
|
|
|
float path_length = c->get_baked_length();
|
|
float bounded_offset = offset;
|
|
if (loop)
|
|
bounded_offset = Math::fposmod(bounded_offset, path_length);
|
|
else
|
|
bounded_offset = CLAMP(bounded_offset, 0, path_length);
|
|
|
|
Vector2 pos = c->interpolate_baked(bounded_offset, cubic);
|
|
|
|
if (rotate) {
|
|
float ahead = bounded_offset + lookahead;
|
|
|
|
if (loop && ahead >= path_length) {
|
|
// If our lookahead will loop, we need to check if the path is closed.
|
|
int point_count = c->get_point_count();
|
|
if (point_count > 0) {
|
|
Vector2 start_point = c->get_point_position(0);
|
|
Vector2 end_point = c->get_point_position(point_count - 1);
|
|
if (start_point == end_point) {
|
|
// Since the path is closed we want to 'smooth off'
|
|
// the corner at the start/end.
|
|
// So we wrap the lookahead back round.
|
|
ahead = Math::fmod(ahead, path_length);
|
|
}
|
|
}
|
|
}
|
|
|
|
Vector2 ahead_pos = c->interpolate_baked(ahead, cubic);
|
|
|
|
Vector2 tangent_to_curve;
|
|
if (ahead_pos == pos) {
|
|
// This will happen at the end of non-looping or non-closed paths.
|
|
// We'll try a look behind instead, in order to get a meaningful angle.
|
|
tangent_to_curve =
|
|
(pos - c->interpolate_baked(bounded_offset - lookahead, cubic)).normalized();
|
|
} else {
|
|
tangent_to_curve = (ahead_pos - pos).normalized();
|
|
}
|
|
|
|
Vector2 normal_of_curve = -tangent_to_curve.tangent();
|
|
|
|
pos += tangent_to_curve * h_offset;
|
|
pos += normal_of_curve * v_offset;
|
|
|
|
set_rotation(tangent_to_curve.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;
|
|
}
|
|
|
|
void PathFollow2D::_validate_property(PropertyInfo &property) const {
|
|
|
|
if (property.name == "offset") {
|
|
|
|
float max = 10000;
|
|
if (path && path->get_curve().is_valid())
|
|
max = path->get_curve()->get_baked_length();
|
|
|
|
property.hint_string = "0," + rtos(max) + ",0.01";
|
|
}
|
|
}
|
|
|
|
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);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_lookahead", "lookahead"), &PathFollow2D::set_lookahead);
|
|
ClassDB::bind_method(D_METHOD("get_lookahead"), &PathFollow2D::get_lookahead);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL, "offset", PROPERTY_HINT_RANGE, "0,10000,0.01"), "set_offset", "get_offset");
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL, "unit_offset", PROPERTY_HINT_RANGE, "0,1,0.0001", PROPERTY_USAGE_EDITOR), "set_unit_offset", "get_unit_offset");
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL, "h_offset"), "set_h_offset", "get_h_offset");
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL, "v_offset"), "set_v_offset", "get_v_offset");
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "rotate"), "set_rotate", "is_rotating");
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "cubic_interp"), "set_cubic_interpolation", "get_cubic_interpolation");
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "loop"), "set_loop", "has_loop");
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL, "lookahead", PROPERTY_HINT_RANGE, "0.001,1024.0,0.001"), "set_lookahead", "get_lookahead");
|
|
}
|
|
|
|
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;
|
|
}
|