feat: implemented pinboard mechanic

modules/you_done_it/pinned_photo.cpp

@@ -1,8 +1,56 @@
 #include "pinned_photo.h"
+#include "core/config/engine.h"
+#include "core/input/input_event.h"
 #include "macros.h"
 
 void PinnedPhoto::_bind_methods() {
 	BIND_PROPERTY(Variant::BOOL, can_drop);
+	BIND_HPROPERTY(Variant::INT, clue, PROPERTY_HINT_ENUM, NetworkData::ClueID_hint());
+}
+
+void PinnedPhoto::enter_tree() {
+	connect("input_event", callable_mp(this, &self_type::on_input_event));
+}
+
+void PinnedPhoto::process(double delta) {
+	if (this->is_held) {
+		set_global_position(get_global_mouse_position());
+	}
+}
+
+void PinnedPhoto::on_input_event(Viewport *viewport, Ref<InputEvent> event, int shape) {
+	Ref<InputEventMouseButton> button{ event };
+	if (button.is_valid() && button->is_pressed()) {
+		this->is_held = true;
+		viewport->set_input_as_handled();
+	}
+}
+
+void PinnedPhoto::unhandled_input(Ref<InputEvent> const &event) {
+	Ref<InputEventMouseButton> button{ event };
+	if (button.is_valid() && this->can_drop && button->is_released()) {
+		this->is_held = false;
+		get_viewport()->set_input_as_handled();
+	}
+}
+
+void PinnedPhoto::_notification(int what) {
+	if (Engine::get_singleton()->is_editor_hint()) {
+		return;
+	}
+	switch (what) {
+		default:
+			return;
+		case NOTIFICATION_ENTER_TREE:
+			set_process(true);
+			set_pickable(true);
+			set_process_unhandled_input(true);
+			enter_tree();
+			return;
+		case NOTIFICATION_PROCESS:
+			process(get_process_delta_time());
+			return;
+	}
 }
 
 void PinnedPhoto::set_can_drop(bool value) {
@@ -12,3 +60,11 @@ void PinnedPhoto::set_can_drop(bool value) {
 bool PinnedPhoto::get_can_drop() const {
 	return this->can_drop;
 }
+
+void PinnedPhoto::set_clue(NetworkData::ClueID id) {
+	this->clue = id;
+}
+
+NetworkData::ClueID PinnedPhoto::get_clue() const {
+	return this->clue;
+}