Validate that nodes in game files are used

You can now also list out nodes that you are explicitly not mapping out. The current state of the repo does produce some warnings when the validator is run and they're either endings, paintings that I'm not sure what to do with yet, and weird proxy stuff I'm not sure how to handle yet.

1 files changed, 67 insertions, 0 deletions

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+#ifndef TOOLS_UTIL_TSCN_H_
+#define TOOLS_UTIL_TSCN_H_
+
+#include <absl/strings/string_view.h>
+
+#include <map>
+#include <memory>
+#include <string>
+#include <string_view>
+#include <variant>
+
+namespace com::fourisland::lingo2_archipelago {
+
+struct GodotExtResource {
+  std::string type;
+  std::string path;
+};
+
+struct GodotExtResourceRef {
+  std::string id;
+};
+
+using GodotInstanceType = std::variant<std::monostate, GodotExtResourceRef>;
+
+class GodotNode {
+ public:
+  GodotNode(std::string name, GodotInstanceType instance_type)
+      : name_(std::move(name)), instance_type_(std::move(instance_type)) {}
+
+  const std::string& GetName() const { return name_; }
+
+  const GodotInstanceType& GetInstanceType() const { return instance_type_; }
+
+  const GodotNode* GetParent() const { return parent_; }
+  GodotNode* GetParent() { return parent_; }
+
+  std::string GetPath() const;
+
+  void AddChild(GodotNode& child);
+
+  const GodotNode* GetNode(absl::string_view path) const;
+  GodotNode* GetNode(absl::string_view path);
+
+  const std::map<std::string, GodotNode*> GetChildren() const {
+    return children_;
+  }
+
+ private:
+  std::string name_;
+  GodotInstanceType instance_type_;
+
+  GodotNode* parent_ = nullptr;
+  std::map<std::string, GodotNode*> children_;
+};
+
+class GodotScene {
+ public:
+  virtual const GodotExtResource* GetExtResource(
+      const std::string& id) const = 0;
+  virtual const GodotNode& GetRoot() const = 0;
+};
+
+std::unique_ptr<GodotScene> ReadGodotSceneFromFile(const std::string& path);
+
+}  // namespace com::fourisland::lingo2_archipelago
+
+#endif /* TOOLS_UTIL_TSCN_H_ */