Cycle through multiple termtypes instead of just sending one.

src/lua_engine/muds.rs

@@ -690,6 +690,20 @@ pub(super) fn mudoutput_subnegotiation_termtype<'gc>(
         const SEND_CMD: u8 = 1;
         match cmd {
             SEND_CMD => {
+                let negidx: Value = mud.get(ctx, "termtype_negotiation_index")?;
+                let mut negidx: u64 = if negidx.is_nil() {
+                    1
+                } else {
+                    u64::from_value(ctx, negidx)?
+                };
+                let supported_termtypes: Table = mud.get(ctx, "supported_termtypes")?;
+                let optlen = supported_termtypes.length() as u64;
+                if negidx > optlen {
+                    negidx = 1;
+                }
+
+                let termtype: String = supported_termtypes.get(ctx, negidx as i64)?;
+
                 send_subnegotiation_if_allowed(
                     ctx,
                     &mud,
@@ -699,8 +713,11 @@ pub(super) fn mudoutput_subnegotiation_termtype<'gc>(
                         memo: global_memo.clone(),
                         mud: socket.clone(),
                     },
-                    format!("\x00{}", "XTERM").as_bytes(),
+                    format!("\x00{}", &termtype).as_bytes(),
                 );
+
+                mud.set(ctx, "termtype_negotiation_index", (negidx + 1) as i64)?;
+
                 Ok(CallbackReturn::Return)
             }
             _ => Ok(CallbackReturn::Return),
@@ -773,6 +790,11 @@ pub(super) fn new_mud<'gc>(ctx: Context<'gc>) -> Callback<'gc> {
             ),
         );
         mud.set(ctx, ctx.intern_static(b"frameroutes"), frameroutes)?;
+        let termtypes: Table = Table::new(&ctx);
+        termtypes.set(ctx, 1_i64, "WORLDWIDEPORTAL")?;
+        termtypes.set(ctx, 2_i64, "XTERM")?;
+        termtypes.set(ctx, 3_i64, "MTTS 815")?;
+        mud.set(ctx, ctx.intern_static(b"supported_termtypes"), termtypes)?;
 
         let curr_frame: Value = ctx
             .get_global::<Table>("info")?