proof of concept: pipe a demo into the game

.gitignore

@@ -75,3 +75,4 @@ sm64config.txt
 /target
 vblank
 input
+*.m64

gamebridge/src/main.rs

@@ -7,16 +7,22 @@ use std::{
 
 fn main() -> anyhow::Result<()> {
     pretty_env_logger::try_init()?;
-    let controller_data = [0; 4];
+    let mut controller_data = [0; 4];
 
     let mut vblank = File::open("vblank")?;
     let mut input = OpenOptions::new().write(true).open("input")?;
+    let mut demofile = File::open("demo.m64")?;
+
+    {
+        let mut buf = [0; 1024];
+        demofile.read(&mut buf)?;
+    }
 
     info!("ready");
 
     loop {
         let mut data = [0; 3];
-        info!("waiting for vblank");
+        debug!("waiting for vblank");
         vblank.read(&mut data)?;
         let str = from_utf8(&data)?;
         debug!("got data: {}", str);
@@ -24,6 +30,7 @@ fn main() -> anyhow::Result<()> {
             warn!("asked to exit by the game");
             return Ok(());
         }
+        demofile.read(&mut controller_data)?;
         input.write(&controller_data)?;
     }
 }

src/pc/controller/controller_gamebridge.c

@@ -21,7 +21,17 @@ static FILE *input;
 #define bye "BYE"
 
 static void gamebridge_close(void) {
+    if (!configGameBridge) {
+        return;
+    }
+
+    printf("[gamebridge] exiting\n");
     fwrite(bye, 1, strlen(bye), vblank);
+    fclose(vblank);
+    fclose(input);
+
+    unlink(vblank_fname);
+    unlink(input_fname);
 }
 
 static void gamebridge_init(void) {
@@ -68,14 +78,14 @@ static void gamebridge_read(OSContPad *pad) {
         return;
     }
 
-    printf("[gamebridge] waiting for input\n");
+    //printf("[gamebridge] waiting for input\n");
     fwrite(ok, 1, strlen(ok), vblank);
     uint8_t bytes[4] = {0};
     fread(bytes, 1, 4, input);
     pad->button = (bytes[0] << 8) | bytes[1];
     pad->stick_x = bytes[2];
     pad->stick_y = bytes[3];
-    printf("[gamebridge] %02x%02x %02x%02x\n", bytes[0], bytes[1], bytes[2], bytes[3]);
+    //printf("[gamebridge] %02x%02x %02x%02x\n", bytes[0], bytes[1], bytes[2], bytes[3]);
     fflush(stdout);
 }