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+/*************************************************************************/
+/* skeleton_modification_2d.cpp */
+/*************************************************************************/
+/* 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. */
+/*************************************************************************/
+
+#include "skeleton_modification_2d.h"
+#include "scene/2d/skeleton_2d.h"
+
+#include "scene/2d/collision_object_2d.h"
+#include "scene/2d/collision_shape_2d.h"
+#include "scene/2d/physical_bone_2d.h"
+
+#ifdef TOOLS_ENABLED
+#include "editor/editor_settings.h"
+#endif // TOOLS_ENABLED
+
+///////////////////////////////////////
+// Modification2D
+///////////////////////////////////////
+
+void SkeletonModification2D::_execute(float p_delta) {
+ call("_execute", p_delta);
+
+ if (!enabled) {
+ return;
+ }
+}
+
+void SkeletonModification2D::_setup_modification(SkeletonModificationStack2D *p_stack) {
+ stack = p_stack;
+ if (stack) {
+ is_setup = true;
+ } else {
+ WARN_PRINT("Could not setup modification with name " + get_name());
+ }
+
+ call("_setup_modification", p_stack);
+}
+
+void SkeletonModification2D::_draw_editor_gizmo() {
+ call("_draw_editor_gizmo");
+}
+
+void SkeletonModification2D::set_enabled(bool p_enabled) {
+ enabled = p_enabled;
+
+#ifdef TOOLS_ENABLED
+ if (editor_draw_gizmo) {
+ if (stack) {
+ stack->set_editor_gizmos_dirty(true);
+ }
+ }
+#endif // TOOLS_ENABLED
+}
+
+bool SkeletonModification2D::get_enabled() {
+ return enabled;
+}
+
+float SkeletonModification2D::clamp_angle(float p_angle, float p_min_bound, float p_max_bound, bool p_invert) {
+ // Map to the 0 to 360 range (in radians though) instead of the -180 to 180 range.
+ if (p_angle < 0) {
+ p_angle = Math_TAU + p_angle;
+ }
+
+ // Make min and max in the range of 0 to 360 (in radians), and make sure they are in the right order
+ if (p_min_bound < 0) {
+ p_min_bound = Math_TAU + p_min_bound;
+ }
+ if (p_max_bound < 0) {
+ p_max_bound = Math_TAU + p_max_bound;
+ }
+ if (p_min_bound > p_max_bound) {
+ float tmp = p_min_bound;
+ p_min_bound = p_max_bound;
+ p_max_bound = tmp;
+ }
+
+ // Note: May not be the most optimal way to clamp, but it always constraints to the nearest angle.
+ if (p_invert == false) {
+ if (p_angle < p_min_bound || p_angle > p_max_bound) {
+ Vector2 min_bound_vec = Vector2(Math::cos(p_min_bound), Math::sin(p_min_bound));
+ Vector2 max_bound_vec = Vector2(Math::cos(p_max_bound), Math::sin(p_max_bound));
+ Vector2 angle_vec = Vector2(Math::cos(p_angle), Math::sin(p_angle));
+
+ if (angle_vec.distance_squared_to(min_bound_vec) <= angle_vec.distance_squared_to(max_bound_vec)) {
+ p_angle = p_min_bound;
+ } else {
+ p_angle = p_max_bound;
+ }
+ }
+ } else {
+ if (p_angle > p_min_bound && p_angle < p_max_bound) {
+ Vector2 min_bound_vec = Vector2(Math::cos(p_min_bound), Math::sin(p_min_bound));
+ Vector2 max_bound_vec = Vector2(Math::cos(p_max_bound), Math::sin(p_max_bound));
+ Vector2 angle_vec = Vector2(Math::cos(p_angle), Math::sin(p_angle));
+
+ if (angle_vec.distance_squared_to(min_bound_vec) <= angle_vec.distance_squared_to(max_bound_vec)) {
+ p_angle = p_min_bound;
+ } else {
+ p_angle = p_max_bound;
+ }
+ }
+ }
+ return p_angle;
+}
+
+void SkeletonModification2D::editor_draw_angle_constraints(Bone2D *p_operation_bone, float p_min_bound, float p_max_bound,
+ bool p_constraint_enabled, bool p_constraint_in_localspace, bool p_constraint_inverted) {
+ if (!p_operation_bone) {
+ return;
+ }
+
+ Color bone_ik_color = Color(1.0, 0.65, 0.0, 0.4);
+#ifdef TOOLS_ENABLED
+ if (Engine::get_singleton()->is_editor_hint()) {
+ bone_ik_color = EditorSettings::get_singleton()->get("editors/2d/bone_ik_color");
+ }
+#endif // TOOLS_ENABLED
+
+ float arc_angle_min = p_min_bound;
+ float arc_angle_max = p_max_bound;
+ if (arc_angle_min < 0) {
+ arc_angle_min = (Math_PI * 2) + arc_angle_min;
+ }
+ if (arc_angle_max < 0) {
+ arc_angle_max = (Math_PI * 2) + arc_angle_max;
+ }
+ if (arc_angle_min > arc_angle_max) {
+ float tmp = arc_angle_min;
+ arc_angle_min = arc_angle_max;
+ arc_angle_max = tmp;
+ }
+ arc_angle_min += p_operation_bone->get_bone_angle();
+ arc_angle_max += p_operation_bone->get_bone_angle();
+
+ if (p_constraint_enabled) {
+ if (p_constraint_in_localspace) {
+ Node *operation_bone_parent = p_operation_bone->get_parent();
+ Bone2D *operation_bone_parent_bone = Object::cast_to<Bone2D>(operation_bone_parent);
+
+ if (operation_bone_parent_bone) {
+ stack->skeleton->draw_set_transform(
+ stack->skeleton->get_global_transform().affine_inverse().xform(p_operation_bone->get_global_position()),
+ operation_bone_parent_bone->get_global_rotation() - stack->skeleton->get_global_rotation());
+ } else {
+ stack->skeleton->draw_set_transform(stack->skeleton->get_global_transform().affine_inverse().xform(p_operation_bone->get_global_position()));
+ }
+ } else {
+ stack->skeleton->draw_set_transform(stack->skeleton->get_global_transform().affine_inverse().xform(p_operation_bone->get_global_position()));
+ }
+
+ if (p_constraint_inverted) {
+ stack->skeleton->draw_arc(Vector2(0, 0), p_operation_bone->get_length(),
+ arc_angle_min + (Math_PI * 2), arc_angle_max, 32, bone_ik_color, 1.0);
+ } else {
+ stack->skeleton->draw_arc(Vector2(0, 0), p_operation_bone->get_length(),
+ arc_angle_min, arc_angle_max, 32, bone_ik_color, 1.0);
+ }
+ stack->skeleton->draw_line(Vector2(0, 0), Vector2(Math::cos(arc_angle_min), Math::sin(arc_angle_min)) * p_operation_bone->get_length(), bone_ik_color, 1.0);
+ stack->skeleton->draw_line(Vector2(0, 0), Vector2(Math::cos(arc_angle_max), Math::sin(arc_angle_max)) * p_operation_bone->get_length(), bone_ik_color, 1.0);
+
+ } else {
+ stack->skeleton->draw_set_transform(stack->skeleton->get_global_transform().affine_inverse().xform(p_operation_bone->get_global_position()));
+ stack->skeleton->draw_arc(Vector2(0, 0), p_operation_bone->get_length(), 0, Math_PI * 2, 32, bone_ik_color, 1.0);
+ stack->skeleton->draw_line(Vector2(0, 0), Vector2(1, 0) * p_operation_bone->get_length(), bone_ik_color, 1.0);
+ }
+}
+
+Ref<SkeletonModificationStack2D> SkeletonModification2D::get_modification_stack() {
+ return stack;
+}
+
+void SkeletonModification2D::set_is_setup(bool p_setup) {
+ is_setup = p_setup;
+}
+
+bool SkeletonModification2D::get_is_setup() const {
+ return is_setup;
+}
+
+void SkeletonModification2D::set_execution_mode(int p_mode) {
+ execution_mode = p_mode;
+}
+
+int SkeletonModification2D::get_execution_mode() const {
+ return execution_mode;
+}
+
+void SkeletonModification2D::set_editor_draw_gizmo(bool p_draw_gizmo) {
+ editor_draw_gizmo = p_draw_gizmo;
+#ifdef TOOLS_ENABLED
+ if (is_setup) {
+ stack->set_editor_gizmos_dirty(true);
+ }
+#endif // TOOLS_ENABLED
+}
+
+bool SkeletonModification2D::get_editor_draw_gizmo() const {
+ return editor_draw_gizmo;
+}
+
+void SkeletonModification2D::_bind_methods() {
+ BIND_VMETHOD(MethodInfo("_execute", PropertyInfo(Variant::FLOAT, "delta")));
+ BIND_VMETHOD(MethodInfo("_setup_modification", PropertyInfo(Variant::OBJECT, "modification_stack", PROPERTY_HINT_RESOURCE_TYPE, "SkeletonModificationStack2D")));
+ BIND_VMETHOD(MethodInfo("_draw_editor_gizmo"));
+
+ ClassDB::bind_method(D_METHOD("set_enabled", "enabled"), &SkeletonModification2D::set_enabled);
+ ClassDB::bind_method(D_METHOD("get_enabled"), &SkeletonModification2D::get_enabled);
+ ClassDB::bind_method(D_METHOD("get_modification_stack"), &SkeletonModification2D::get_modification_stack);
+ ClassDB::bind_method(D_METHOD("set_is_setup", "is_setup"), &SkeletonModification2D::set_is_setup);
+ ClassDB::bind_method(D_METHOD("get_is_setup"), &SkeletonModification2D::get_is_setup);
+ ClassDB::bind_method(D_METHOD("set_execution_mode", "execution_mode"), &SkeletonModification2D::set_execution_mode);
+ ClassDB::bind_method(D_METHOD("get_execution_mode"), &SkeletonModification2D::get_execution_mode);
+ ClassDB::bind_method(D_METHOD("clamp_angle", "angle", "min", "max", "invert"), &SkeletonModification2D::clamp_angle);
+ ClassDB::bind_method(D_METHOD("set_editor_draw_gizmo", "draw_gizmo"), &SkeletonModification2D::set_editor_draw_gizmo);
+ ClassDB::bind_method(D_METHOD("get_editor_draw_gizmo"), &SkeletonModification2D::get_editor_draw_gizmo);
+
+ ADD_PROPERTY(PropertyInfo(Variant::BOOL, "enabled"), "set_enabled", "get_enabled");
+ ADD_PROPERTY(PropertyInfo(Variant::INT, "execution_mode", PROPERTY_HINT_ENUM, "process, physics_process"), "set_execution_mode", "get_execution_mode");
+}
+
+SkeletonModification2D::SkeletonModification2D() {
+ stack = nullptr;
+ is_setup = false;
+}