397 lines
12 KiB
C++
397 lines
12 KiB
C++
/*************************************************************************/
|
|
/* path_2d.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2022 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 "core/math/geometry_2d.h"
|
|
|
|
#ifdef TOOLS_ENABLED
|
|
#include "editor/editor_scale.h"
|
|
#endif
|
|
|
|
#ifdef TOOLS_ENABLED
|
|
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->sample(i, frac);
|
|
aabb.expand_to(p);
|
|
}
|
|
}
|
|
|
|
return aabb;
|
|
}
|
|
|
|
bool Path2D::_edit_use_rect() const {
|
|
return curve.is_valid() && curve->get_point_count() != 0;
|
|
}
|
|
|
|
bool Path2D::_edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const {
|
|
if (curve.is_null()) {
|
|
return false;
|
|
}
|
|
|
|
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->sample(i, frac);
|
|
|
|
Vector2 p = Geometry2D::get_closest_point_to_segment(p_point, s);
|
|
if (p.distance_to(p_point) <= p_tolerance) {
|
|
return true;
|
|
}
|
|
|
|
s[0] = s[1];
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
void Path2D::_notification(int p_what) {
|
|
switch (p_what) {
|
|
// Draw the curve if path debugging is enabled.
|
|
case NOTIFICATION_DRAW: {
|
|
if (!curve.is_valid()) {
|
|
break;
|
|
}
|
|
|
|
if (!Engine::get_singleton()->is_editor_hint() && !get_tree()->is_debugging_paths_hint()) {
|
|
return;
|
|
}
|
|
|
|
if (curve->get_point_count() < 2) {
|
|
return;
|
|
}
|
|
|
|
#ifdef TOOLS_ENABLED
|
|
const real_t line_width = get_tree()->get_debug_paths_width() * EDSCALE;
|
|
#else
|
|
const real_t line_width = get_tree()->get_debug_paths_width();
|
|
#endif
|
|
real_t interval = 10;
|
|
const real_t length = curve->get_baked_length();
|
|
|
|
if (length > CMP_EPSILON) {
|
|
const int sample_count = int(length / interval) + 2;
|
|
interval = length / (sample_count - 1); // Recalculate real interval length.
|
|
|
|
Vector<Transform2D> frames;
|
|
frames.resize(sample_count);
|
|
|
|
{
|
|
Transform2D *w = frames.ptrw();
|
|
|
|
for (int i = 0; i < sample_count; i++) {
|
|
w[i] = curve->sample_baked_with_rotation(i * interval, true, true);
|
|
}
|
|
}
|
|
|
|
const Transform2D *r = frames.ptr();
|
|
// Draw curve segments
|
|
{
|
|
PackedVector2Array v2p;
|
|
v2p.resize(sample_count);
|
|
Vector2 *w = v2p.ptrw();
|
|
|
|
for (int i = 0; i < sample_count; i++) {
|
|
w[i] = r[i].get_origin();
|
|
}
|
|
draw_polyline(v2p, get_tree()->get_debug_paths_color(), line_width, false);
|
|
}
|
|
|
|
// Draw fish bones
|
|
{
|
|
PackedVector2Array v2p;
|
|
v2p.resize(3);
|
|
Vector2 *w = v2p.ptrw();
|
|
|
|
for (int i = 0; i < sample_count; i++) {
|
|
const Vector2 p = r[i].get_origin();
|
|
const Vector2 side = r[i].columns[0];
|
|
const Vector2 forward = r[i].columns[1];
|
|
|
|
// Fish Bone.
|
|
w[0] = p + (side - forward) * 5;
|
|
w[1] = p;
|
|
w[2] = p + (-side - forward) * 5;
|
|
|
|
draw_polyline(v2p, get_tree()->get_debug_paths_color(), line_width * 0.5, false);
|
|
}
|
|
}
|
|
}
|
|
} break;
|
|
}
|
|
}
|
|
|
|
void Path2D::_curve_changed() {
|
|
if (!is_inside_tree()) {
|
|
return;
|
|
}
|
|
|
|
if (!Engine::get_singleton()->is_editor_hint() && !get_tree()->is_debugging_paths_hint()) {
|
|
return;
|
|
}
|
|
|
|
queue_redraw();
|
|
}
|
|
|
|
void Path2D::set_curve(const Ref<Curve2D> &p_curve) {
|
|
if (curve.is_valid()) {
|
|
curve->disconnect("changed", callable_mp(this, &Path2D::_curve_changed));
|
|
}
|
|
|
|
curve = p_curve;
|
|
|
|
if (curve.is_valid()) {
|
|
curve->connect("changed", callable_mp(this, &Path2D::_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);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "curve", PROPERTY_HINT_RESOURCE_TYPE, "Curve2D", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_EDITOR_INSTANTIATE_OBJECT), "set_curve", "get_curve");
|
|
}
|
|
|
|
/////////////////////////////////////////////////////////////////////////////////
|
|
|
|
void PathFollow2D::_update_transform() {
|
|
if (!path) {
|
|
return;
|
|
}
|
|
|
|
Ref<Curve2D> c = path->get_curve();
|
|
if (!c.is_valid()) {
|
|
return;
|
|
}
|
|
|
|
real_t path_length = c->get_baked_length();
|
|
if (path_length == 0) {
|
|
return;
|
|
}
|
|
|
|
if (rotates) {
|
|
Transform2D xform = c->sample_baked_with_rotation(progress, cubic);
|
|
xform.translate_local(v_offset, h_offset);
|
|
set_rotation(xform[1].angle());
|
|
set_position(xform[2]);
|
|
} else {
|
|
Vector2 pos = c->sample_baked(progress, cubic);
|
|
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 = nullptr;
|
|
} 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 &p_property) const {
|
|
if (p_property.name == "offset") {
|
|
real_t max = 10000.0;
|
|
if (path && path->get_curve().is_valid()) {
|
|
max = path->get_curve()->get_baked_length();
|
|
}
|
|
|
|
p_property.hint_string = "0," + rtos(max) + ",0.01,or_less,or_greater";
|
|
}
|
|
}
|
|
|
|
PackedStringArray PathFollow2D::get_configuration_warnings() const {
|
|
PackedStringArray warnings = Node::get_configuration_warnings();
|
|
|
|
if (is_visible_in_tree() && is_inside_tree()) {
|
|
if (!Object::cast_to<Path2D>(get_parent())) {
|
|
warnings.push_back(RTR("PathFollow2D only works when set as a child of a Path2D node."));
|
|
}
|
|
}
|
|
|
|
return warnings;
|
|
}
|
|
|
|
void PathFollow2D::_bind_methods() {
|
|
ClassDB::bind_method(D_METHOD("set_progress", "progress"), &PathFollow2D::set_progress);
|
|
ClassDB::bind_method(D_METHOD("get_progress"), &PathFollow2D::get_progress);
|
|
|
|
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_progress_ratio", "ratio"), &PathFollow2D::set_progress_ratio);
|
|
ClassDB::bind_method(D_METHOD("get_progress_ratio"), &PathFollow2D::get_progress_ratio);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_rotates", "enable"), &PathFollow2D::set_rotates);
|
|
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::FLOAT, "progress", PROPERTY_HINT_RANGE, "0,10000,0.01,or_less,or_greater,suffix:px"), "set_progress", "get_progress");
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "progress_ratio", PROPERTY_HINT_RANGE, "0,1,0.0001,or_less,or_greater", PROPERTY_USAGE_EDITOR), "set_progress_ratio", "get_progress_ratio");
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "h_offset"), "set_h_offset", "get_h_offset");
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "v_offset"), "set_v_offset", "get_v_offset");
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "rotates"), "set_rotates", "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::FLOAT, "lookahead", PROPERTY_HINT_RANGE, "0.001,1024.0,0.001"), "set_lookahead", "get_lookahead");
|
|
}
|
|
|
|
void PathFollow2D::set_progress(real_t p_progress) {
|
|
ERR_FAIL_COND(!isfinite(p_progress));
|
|
progress = p_progress;
|
|
if (path) {
|
|
if (path->get_curve().is_valid()) {
|
|
real_t path_length = path->get_curve()->get_baked_length();
|
|
|
|
if (loop && path_length) {
|
|
progress = Math::fposmod(progress, path_length);
|
|
if (!Math::is_zero_approx(p_progress) && Math::is_zero_approx(progress)) {
|
|
progress = path_length;
|
|
}
|
|
} else {
|
|
progress = CLAMP(progress, 0, path_length);
|
|
}
|
|
}
|
|
|
|
_update_transform();
|
|
}
|
|
}
|
|
|
|
void PathFollow2D::set_h_offset(real_t p_h_offset) {
|
|
h_offset = p_h_offset;
|
|
if (path) {
|
|
_update_transform();
|
|
}
|
|
}
|
|
|
|
real_t PathFollow2D::get_h_offset() const {
|
|
return h_offset;
|
|
}
|
|
|
|
void PathFollow2D::set_v_offset(real_t p_v_offset) {
|
|
v_offset = p_v_offset;
|
|
if (path) {
|
|
_update_transform();
|
|
}
|
|
}
|
|
|
|
real_t PathFollow2D::get_v_offset() const {
|
|
return v_offset;
|
|
}
|
|
|
|
real_t PathFollow2D::get_progress() const {
|
|
return progress;
|
|
}
|
|
|
|
void PathFollow2D::set_progress_ratio(real_t p_ratio) {
|
|
if (path && path->get_curve().is_valid() && path->get_curve()->get_baked_length()) {
|
|
set_progress(p_ratio * path->get_curve()->get_baked_length());
|
|
}
|
|
}
|
|
|
|
real_t PathFollow2D::get_progress_ratio() const {
|
|
if (path && path->get_curve().is_valid() && path->get_curve()->get_baked_length()) {
|
|
return get_progress() / path->get_curve()->get_baked_length();
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void PathFollow2D::set_lookahead(real_t p_lookahead) {
|
|
lookahead = p_lookahead;
|
|
}
|
|
|
|
real_t PathFollow2D::get_lookahead() const {
|
|
return lookahead;
|
|
}
|
|
|
|
void PathFollow2D::set_rotates(bool p_rotates) {
|
|
rotates = p_rotates;
|
|
_update_transform();
|
|
}
|
|
|
|
bool PathFollow2D::is_rotating() const {
|
|
return rotates;
|
|
}
|
|
|
|
void PathFollow2D::set_loop(bool p_loop) {
|
|
loop = p_loop;
|
|
}
|
|
|
|
bool PathFollow2D::has_loop() const {
|
|
return loop;
|
|
}
|