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+/*************************************************************************/
+/* test_path_follow_2d.h */
+/*************************************************************************/
+/* This file is part of: */
+/* GODOT ENGINE */
+/* https://godotengine.org */
+/*************************************************************************/
+/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
+/* Copyright (c) 2014-2021 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. */
+/*************************************************************************/
+
+#ifndef TEST_PATH_FOLLOW_2D_H
+#define TEST_PATH_FOLLOW_2D_H
+
+#include "scene/2d/path_2d.h"
+#include "scene/resources/curve.h"
+
+#include "tests/test_macros.h"
+
+namespace TestPathFollow2D {
+
+TEST_CASE("[PathFollow2D] Sampling with unit offset") {
+ const Ref<Curve2D> &curve = memnew(Curve2D());
+ curve->add_point(Vector2(0, 0));
+ curve->add_point(Vector2(100, 0));
+ curve->add_point(Vector2(100, 100));
+ curve->add_point(Vector2(0, 100));
+ curve->add_point(Vector2(0, 0));
+ const Path2D *path = memnew(Path2D);
+ path->set_curve(curve);
+ const PathFollow2D *path_follow_2d = memnew(PathFollow2D);
+ path->add_child(path_follow_2d);
+
+ path_follow_2d->set_unit_offset(0);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(0, 0)));
+
+ path_follow_2d->set_unit_offset(0.125);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(50, 0)));
+
+ path_follow_2d->set_unit_offset(0.25);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(100, 0)));
+
+ path_follow_2d->set_unit_offset(0.375);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(100, 50)));
+
+ path_follow_2d->set_unit_offset(0.5);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(100, 100)));
+
+ path_follow_2d->set_unit_offset(0.625);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(50, 100)));
+
+ path_follow_2d->set_unit_offset(0.75);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(0, 100)));
+
+ path_follow_2d->set_unit_offset(0.875);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(0, 50)));
+
+ path_follow_2d->set_unit_offset(1);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(0, 0)));
+
+ memdelete(path);
+}
+
+TEST_CASE("[PathFollow2D] Sampling with offset") {
+ const Ref<Curve2D> &curve = memnew(Curve2D());
+ curve->add_point(Vector2(0, 0));
+ curve->add_point(Vector2(100, 0));
+ curve->add_point(Vector2(100, 100));
+ curve->add_point(Vector2(0, 100));
+ curve->add_point(Vector2(0, 0));
+ const Path2D *path = memnew(Path2D);
+ path->set_curve(curve);
+ const PathFollow2D *path_follow_2d = memnew(PathFollow2D);
+ path->add_child(path_follow_2d);
+
+ path_follow_2d->set_offset(0);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(0, 0)));
+
+ path_follow_2d->set_offset(50);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(50, 0)));
+
+ path_follow_2d->set_offset(100);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(100, 0)));
+
+ path_follow_2d->set_offset(150);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(100, 50)));
+
+ path_follow_2d->set_offset(200);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(100, 100)));
+
+ path_follow_2d->set_offset(250);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(50, 100)));
+
+ path_follow_2d->set_offset(300);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(0, 100)));
+
+ path_follow_2d->set_offset(350);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(0, 50)));
+
+ path_follow_2d->set_offset(400);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(0, 0)));
+
+ memdelete(path);
+}
+
+TEST_CASE("[PathFollow2D] Removal of a point in curve") {
+ const Ref<Curve2D> &curve = memnew(Curve2D());
+ curve->add_point(Vector2(0, 0));
+ curve->add_point(Vector2(100, 0));
+ curve->add_point(Vector2(100, 100));
+ const Path2D *path = memnew(Path2D);
+ path->set_curve(curve);
+ const PathFollow2D *path_follow_2d = memnew(PathFollow2D);
+ path->add_child(path_follow_2d);
+
+ path_follow_2d->set_unit_offset(0.5);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(100, 0)));
+
+ curve->remove_point(1);
+
+ CHECK_MESSAGE(
+ path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(50, 50)),
+ "Path follow's position should be updated after removing a point from the curve");
+
+ memdelete(path);
+}
+
+TEST_CASE("[PathFollow2D] Setting h_offset and v_offset") {
+ const Ref<Curve2D> &curve = memnew(Curve2D());
+ curve->add_point(Vector2(0, 0));
+ curve->add_point(Vector2(100, 0));
+ const Path2D *path = memnew(Path2D);
+ path->set_curve(curve);
+ const PathFollow2D *path_follow_2d = memnew(PathFollow2D);
+ path->add_child(path_follow_2d);
+
+ path_follow_2d->set_unit_offset(0.5);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(50, 0)));
+
+ path_follow_2d->set_h_offset(25);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(75, 0)));
+
+ path_follow_2d->set_v_offset(25);
+ CHECK(path_follow_2d->get_transform().get_origin().is_equal_approx(Vector2(75, 25)));
+
+ memdelete(path);
+}
+
+TEST_CASE("[PathFollow2D] Unit offset out of range") {
+ const Ref<Curve2D> &curve = memnew(Curve2D());
+ curve->add_point(Vector2(0, 0));
+ curve->add_point(Vector2(100, 0));
+ const Path2D *path = memnew(Path2D);
+ path->set_curve(curve);
+ const PathFollow2D *path_follow_2d = memnew(PathFollow2D);
+ path->add_child(path_follow_2d);
+
+ path_follow_2d->set_loop(true);
+
+ path_follow_2d->set_unit_offset(-0.3);
+ CHECK_MESSAGE(
+ path_follow_2d->get_unit_offset() == 0.7,
+ "Unit Offset should loop back from the end in the opposite direction");
+
+ path_follow_2d->set_unit_offset(1.3);
+ CHECK_MESSAGE(
+ path_follow_2d->get_unit_offset() == 0.3,
+ "Unit Offset should loop back from the end in the opposite direction");
+
+ path_follow_2d->set_loop(false);
+
+ path_follow_2d->set_unit_offset(-0.3);
+ CHECK_MESSAGE(
+ path_follow_2d->get_unit_offset() == 0,
+ "Unit Offset should be clamped at 0");
+
+ path_follow_2d->set_unit_offset(1.3);
+ CHECK_MESSAGE(
+ path_follow_2d->get_unit_offset() == 1,
+ "Unit Offset should be clamped at 1");
+
+ memdelete(path);
+}
+
+TEST_CASE("[PathFollow2D] Offset out of range") {
+ const Ref<Curve2D> &curve = memnew(Curve2D());
+ curve->add_point(Vector2(0, 0));
+ curve->add_point(Vector2(100, 0));
+ const Path2D *path = memnew(Path2D);
+ path->set_curve(curve);
+ const PathFollow2D *path_follow_2d = memnew(PathFollow2D);
+ path->add_child(path_follow_2d);
+
+ path_follow_2d->set_loop(true);
+
+ path_follow_2d->set_offset(-50);
+ CHECK_MESSAGE(
+ path_follow_2d->get_offset() == 50,
+ "Offset should loop back from the end in the opposite direction");
+
+ path_follow_2d->set_offset(150);
+ CHECK_MESSAGE(
+ path_follow_2d->get_offset() == 50,
+ "Offset should loop back from the end in the opposite direction");
+
+ path_follow_2d->set_loop(false);
+
+ path_follow_2d->set_offset(-50);
+ CHECK_MESSAGE(
+ path_follow_2d->get_offset() == 0,
+ "Offset should be clamped at 0");
+
+ path_follow_2d->set_offset(150);
+ CHECK_MESSAGE(
+ path_follow_2d->get_offset() == 100,
+ "Offset should be clamped at 1");
+
+ memdelete(path);
+}
+} // namespace TestPathFollow2D
+
+#endif // TEST_PATH_FOLLOW_2D_H
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