Fix SubViewport bug when opening the scene FirstPersonPlayer / Zombie (bone collision shape) / Bullet in the editor

src/BoneCollisionShape.cpp

@@ -1,5 +1,7 @@
 #include "BoneCollisionShape.h"
 
+#include <godot_cpp/classes/engine.hpp>
+
 using namespace godot;
 
 namespace blitz {
@@ -25,7 +27,13 @@ BoneCollisionShape::BoneCollisionShape() {}
 BoneCollisionShape::~BoneCollisionShape() {}
 
 void BoneCollisionShape::_ready() {
-    m_Crosshair = Object::cast_to<Crosshair>(get_parent()->get_parent()->get_parent()->get_parent()->get_parent()->get_parent()->get_parent()->find_child("Crosshair"));
+#if DEBUG_ENABLED
+	if (Engine::get_singleton()->is_editor_hint()) {
+		return;
+	}
+#endif
+	m_Crosshair = Object::cast_to<Crosshair>(
+		get_parent()->get_parent()->get_parent()->get_parent()->get_parent()->get_parent()->get_parent()->find_child("Crosshair"));
 	DEV_ASSERT(m_Crosshair);
 }
 
@@ -47,13 +55,13 @@ int BoneCollisionShape::get_body_damage() const {
 
 void BoneCollisionShape::headshot_hit() {
 	ERR_PRINT("zombie headshot hit");
-    m_Crosshair->set_dot_color(Color(1,0,0,1));
+	m_Crosshair->set_dot_color(Color(1, 0, 0, 1));
 	emit_signal("a_ZombieHeadShotHit", m_HeadDamage);
 }
 
 void BoneCollisionShape::bodyshot_hit() {
 	ERR_PRINT("zombie body hit");
-    m_Crosshair->set_dot_color(Color(0,0,1,1));
+	m_Crosshair->set_dot_color(Color(0, 0, 1, 1));
 	emit_signal("a_ZombieBodyShotHit", m_BodyDamage);
 }
 

src/Bullet.cpp

@@ -1,6 +1,8 @@
 #include "Bullet.h"
 #include "BoneCollisionShape.h"
 
+#include <godot_cpp/classes/engine.hpp>
+
 using namespace godot;
 
 namespace blitz {
@@ -25,6 +27,11 @@ void Bullet::_ready() {
 	m_Timer = memnew(Timer);
 	add_child(m_Timer);
 	m_Timer->connect("timeout", callable_mp(this, &Bullet::_on_timer_timeout));
+#if DEBUG_ENABLED
+	if (Engine::get_singleton()->is_editor_hint()) {
+		return;
+	}
+#endif
 	m_Crosshair = Object::cast_to<Crosshair>(get_parent()->find_child("Crosshair"));
 	DEV_ASSERT(m_Crosshair);
 }

src/Crosshair.cpp

@@ -15,8 +15,19 @@ Crosshair::Crosshair() :
 Crosshair::~Crosshair() {}
 
 void Crosshair::_ready() {
-	m_Player = Object::cast_to<FirstPersonPlayer>(get_parent()->get_parent()->get_parent()->find_child("FirstPersonPlayer"));
+	// Catch the parent node directly without SubViewport problem in the editor thx to "recursivity" (if we go up the tree one more
+	// notch its bugging)
+	Node* root_node = get_parent();
+	while (root_node != nullptr && !root_node->is_class("FirstPersonPlayer")) {
+		root_node = root_node->get_parent();
+	}
+	if (root_node != nullptr && root_node->is_class("FirstPersonPlayer")) {
+		m_Player = Object::cast_to<FirstPersonPlayer>(root_node);
 		DEV_ASSERT(m_Player);
+	} else {
+		ERR_PRINT("FirstPersonPlayer not found in parent hierarchy.");
+	}
+
 	m_CrosshairLines = {Object::cast_to<Line2D>(find_child("Top")), Object::cast_to<Line2D>(find_child("Right")),
 		Object::cast_to<Line2D>(find_child("Bottom")), Object::cast_to<Line2D>(find_child("Left"))};
 	for (size_t i = 0; i < m_CrosshairLines.size(); i++) {