test implementation of ambition upgrade system

Buffs/SummonerAmbitionBuff.cs

@@ -0,0 +1,37 @@
+using Terraria;
+using Terraria.Localization;
+using Terraria.ModLoader;
+
+namespace YHTMod.Buffs;
+
+public class SummonerAmbitionBuff : ModBuff
+{
+    public override void SetStaticDefaults()
+    {
+        Main.buffNoSave[Type] = true;
+        Main.buffNoTimeDisplay[Type] = true;
+    }
+
+    public override void ModifyBuffText(ref string buffName, ref string tip, ref int rare)
+    {
+        var modPlayer = Main.LocalPlayer.TryGetModPlayer<YhtPlayer>(out var mp) ? mp : null;
+        if (modPlayer == null) return;
+        
+        tip = Language.GetTextValue("Mods.YHTMod.Buffs.SummonerAmbitionBuff.Description", modPlayer.SummonerAmbitionCrafts.Count);
+    }
+
+    public override void Update(Player player, ref int buffIndex)
+    {
+        var modPlayer = player.GetModPlayer<YhtPlayer>();
+        
+        if (modPlayer.SummonerAmbition)
+        {
+            player.buffTime[buffIndex] = 18000;
+        }
+        else
+        {
+            player.DelBuff(buffIndex);
+            buffIndex--;
+        }
+    }
+}