feat: selection tracking

modules/terrain_editor/layer_editor.cpp

@@ -0,0 +1,51 @@
+#include "layer_editor.h"
+#include "scene/resources/packed_scene.h"
+
+void LayerEditor::_bind_methods() {
+	String hint_string{ vformat("StringName;%s/%s:PackedScene", Variant::OBJECT, PROPERTY_HINT_RESOURCE_TYPE) };
+	BIND_HPROPERTY(Variant::DICTIONARY, inspectors, PROPERTY_HINT_DICTIONARY_TYPE, hint_string);
+	BIND_HPROPERTY(Variant::OBJECT, terrain, PROPERTY_HINT_NODE_TYPE, "TerrainMeshEditor");
+}
+
+void LayerEditor::deselect_current() {
+	if (this->current_inspector) {
+		this->current_inspector->queue_free();
+	}
+	this->current_inspector = nullptr;
+}
+
+void LayerEditor::select(Ref<TerrainPrimitive> primitive) {
+	deselect_current();
+	if (primitive.is_valid() && this->inspectors.has(primitive->get_class())) {
+		this->current_inspector = this->inspectors.get(primitive->get_class())->instantiate();
+		add_child(this->current_inspector);
+	}
+}
+
+void LayerEditor::set_inspectors(Dictionary dict) {
+	this->inspectors.clear();
+	for (KeyValue<Variant, Variant> kvp : dict) {
+		StringName name{ kvp.key };
+		Ref<PackedScene> value{ kvp.value };
+		this->inspectors.insert(name, value);
+	}
+}
+
+Dictionary LayerEditor::get_inspectors() const {
+	Dictionary r;
+	for (KeyValue<StringName, Ref<PackedScene>> const &kvp : this->inspectors) {
+		r[kvp.key] = kvp.value;
+	}
+	return r;
+}
+
+void LayerEditor::set_terrain(TerrainMeshEditor *editor) {
+	this->terrain = editor;
+	if (editor && !Engine::get_singleton()->is_editor_hint()) {
+		editor->connect(TerrainMeshEditor::sig_selection_changed, callable_mp(this, &self_type::select));
+	}
+}
+
+TerrainMeshEditor *LayerEditor::get_terrain() const {
+	return this->terrain;
+}