Code Injection

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This documentation makes a few assumptions:

• You are using Ghidra
• You are basing your code on the Rombase

Mapping Types

To use the game's types in our code, we first need to map them. For this example, we'll be mapping the type Dpr_Battle_Logic_MyStatus_o.

Knowing we're looking at Dpr_Battle_Logic_MyStatus, this means the class is at `Dpr::Battle::Logic::MyStatus`, so we create the file externals/Dpr/Battle/Logic/MyStatus.h.

 namespace Dpr::Battle::Logic {
     struct MyStatus {
     };
 }

First, we open it in Ghidra's type browser, and we're greeted with this:

There's two situations here; Either it has a `klass` and `monitor` field, or it only has `fields`. In the former case, we call it an ILClass, otherwise we call it an ILStruct. In this case, that means it's an ILClass.

 namespace Dpr::Battle::Logic {
     // If ILClass:  `struct T : ILClass<T>` 
     // If ILStruct: `struct T : ILStruct<T>`
     struct MyStatus : ILClass<MyStatus> {  
     };
 }

Next, we right-click the `fields` row and click "Edit component field". The following shows up:

 namespace Dpr::Battle::Logic {
     struct MyStatus : ILClass<MyStatus> {
         // All fields go in a nested Fields struct. If it has no fields, don't add it.
         // If your type has a supertype (for example, UnityEngine_Behaviour_fields has a field called super of type UnityEngine_Component_fields),
         //  You would copy that here (i.e. `struct Fields : UnityEngine::Component::Fields {`)
         struct Fields {
             // Fill in all elements from the image, creating their types if needed.
             // You need to remap e.g. System_String_o* to System::String::Object*
             // or UnityEngine_GameObject_array to UnityEngine::GameObject::Array
             System::String::Object* name;
             bool sex;
             int32_t lang;
             uint32_t id;
             uint8_t fashion;
             uint8_t body_type;
             uint8_t hat;
             uint8_t shoes;
         };
     };
 }