Open Route 31, Violet City and Sprout Tower (#31)

Enable Route 31 and its gate, Dark Cave's Violet entrance, Violet City with its buildings and Sprout Tower. Port the script commands they use: gettrainername, askforphonenumber (with AddPhoneNumber's room for Mom and Elm; addcellnum now reports failure as the original does), checkpokemail, loadmenu/_2dmenu/closewindow, giveegg and trade (NPCTrade, with wTradeFlags saved).

Eggs keep their species with an egg flag, as wPartySpecies does. The pack's TM/HM counts receive, check and toss TMs and HMs, which are named TM01-HM07.

The playthrough continues through Route 31 (with Mom's call), Violet City and Sprout Tower to Elder Li's Flash.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/game/battle/battle.ts

@@ -1391,7 +1391,7 @@ export class Battle {
   private *useItemSelectMon(): Gen<number> {
     const slot = yield* this.partyMenu(BATTLE.UseOnWhichPKMNString, false, true);
     if (slot < 0) return -1;
-    if (this.options.party[slot].species === C.EGG) {
+    if (this.options.party[slot].egg) {
       yield* this.say(BATTLE.ItemCantUseOnEggText);
       return -1;
     }
@@ -3465,7 +3465,7 @@ export class Battle {
     }
     const mon = party[this.beatUpMon];
     if (!mon) throw new UnsupportedBattle("Beat Up ran past the party.");
-    if (party.some((member) => member.species === C.EGG))
+    if (party.some((member) => member.egg))
       throw new UnsupportedBattle("Beat Up with an Egg in the party is not ported yet.");
     // The player's members go by nickname, a trainer's by species name.
     this.strings[RAM.stringBuffer1] = player ? mon.nickname : data.speciesName(mon.species);
@@ -5467,7 +5467,7 @@ export class Battle {
     const mon = this.options.party[slot];
     if (mon.hp) return true;
     if (!this.battleHasJustStarted)
-      yield* this.say(mon.species === C.EGG ? BATTLE.BattleText_AnEGGCantBattle : BATTLE.BattleText_TheresNoWillToBattle);
+      yield* this.say(mon.egg ? BATTLE.BattleText_AnEGGCantBattle : BATTLE.BattleText_TheresNoWillToBattle);
     return false;
   }
   /** PickSwitchMonInBattle: a fit Pokémon other than the one out, or -1. */
@@ -5953,7 +5953,7 @@ export class Battle {
    * only when wCurPartyMon equals wPartyMenuCursor, which is 1-based. */
   private changeHappiness(index: number, action: number) {
     const mon = this.options.party[index];
-    if (mon.species === C.EGG) return;
+    if (mon.egg) return;
     const tier = mon.happiness < 100 ? 0 : mon.happiness < 200 ? 1 : 2;
     mon.happiness = changedHappiness(
       mon.happiness,