Separate core from desktop target

1 files changed, 69 insertions, 0 deletions

diff --git a/src/desktop/load_save.rs b/src/desktop/load_save.rs
new file mode 100644
index 0000000..dfe2083
--- /dev/null
+++ b/src/desktop/load_save.rs
@@ -0,0 +1,69 @@
+use std::fs::File;
+use std::io::{Write, Read};
+use crate::io::LoadSave;
+
+pub struct FSLoadSave {
+    rom_file: String,
+    save_file: String,
+}
+
+impl FSLoadSave {
+    pub fn new(rom_file: impl Into<String>, save_file: impl Into<String>) -> Self {
+        Self {
+            rom_file: rom_file.into(),
+            save_file: save_file.into(),
+        }
+    }
+}
+
+impl LoadSave for FSLoadSave {
+    type Error = std::io::Error;
+
+    fn load_rom(&self, rom: &mut [u8]) -> Result<(), std::io::Error> {
+        let mut f = File::open(&self.rom_file)?;
+
+        f.read(rom)?;
+
+        return Ok(());
+    }
+
+    fn load_bootrom(&self, boot_rom: &mut [u8]) -> Result<(), std::io::Error> {
+        println!("MBC: {:02x}", boot_rom[0x147]);
+        println!("CGB: {:02x}", boot_rom[0x143]);
+
+        if boot_rom[0x143] == 0x80 || boot_rom[0x143] == 0xc0 {
+            unimplemented!("CGB Boot rom is not implemented");
+            // let bytes = include_bytes!("../assets/cgb_boot.bin");
+
+            // self.boot_rom[..0x900].copy_from_slice(bytes);
+            // self.cgb_mode = true;
+            // self.display.cgb_mode = true;
+        } else {
+            let bytes = include_bytes!("../../assets/dmg_boot.bin");
+
+            boot_rom[..0x100].copy_from_slice(bytes);
+        }
+
+        Ok(())
+    }
+
+    fn load_external_ram(&self, external_ram: &mut [u8]) -> Result<(), std::io::Error> {
+        let mut f = File::open(&self.save_file)?;
+
+        f.read(external_ram)?;
+
+        println!("Save file loaded from \"{}\"!", self.save_file);
+
+        Ok(())
+    }
+
+    fn save_external_ram(&self, external_ram: &[u8]) -> Result<(), std::io::Error> {
+        let mut f = File::create(&self.save_file)?;
+
+        f.write_all(&external_ram)?;
+
+        println!("Save written to \"{}\"!", self.save_file);
+
+        Ok(())
+    }
+}