chore: initial game shark structure

src/lib.rs

@@ -16,6 +16,7 @@ pub mod pad;
 pub mod ppu;
 pub mod rom;
 pub mod serial;
+pub mod shark;
 pub mod state;
 pub mod test;
 pub mod timer;

src/shark.rs

+use std::collections::HashMap;
+
+#[derive(Clone)]
+#[cfg_attr(feature = "wasm", wasm_bindgen)]
+pub struct GameShark {
+    /// Hash map that contains the complete set of Game Shark
+    /// codes that have been registered for the current ROM.
+    /// These codes are going to apply a series of patches to
+    /// the RAM effectively allowing the user to cheat.
+    codes: HashMap<u16, GameSharkCode>,
+}
+
+#[derive(Clone)]
+pub struct GameSharkCode {
+    /// The Game Genie code that is going to be applied to the ROM.
+    code: String,
+
+    /// The RAM bank that the cheat code is going to be applied to,
+    /// allowing advanced MBCs to be patched.
+    ram_bank: u16,
+
+    /// The new data that is going to be written to the address.
+    new_data: u8,
+
+    /// Address of the data that is going to be patched.
+    addr: u16,
+}