Many more tests and fixes

Plugins/PkmnLib.Plugin.Gen7/Scripts/Side/FollowMeEffect.cs

@@ -0,0 +1,42 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+
+[Script(ScriptCategory.Side, "follow_me")]
+public class FollowMeEffect : Script, IScriptChangeIncomingTargets, IScriptOnEndTurn, IScriptOnFaint, IScriptOnSwitchOut
+{
+    private readonly IPokemon _user;
+
+    public FollowMeEffect(IPokemon user)
+    {
+        _user = user;
+    }
+
+    /// <inheritdoc />
+    public void ChangeIncomingTargets(IMoveChoice moveChoice, ref IReadOnlyList<IPokemon?> targets)
+    {
+        if (targets.Count != 1)
+            return;
+        if (moveChoice.ChosenMove.MoveData.HasFlag(MoveFlags.NoRedirection))
+            return;
+
+        if (moveChoice.User.BattleData?.SideIndex == _user.BattleData?.SideIndex)
+            return;
+        targets = [_user];
+    }
+
+    public void OnEndTurn(IScriptSource owner, IBattle battle)
+    {
+        RemoveSelf();
+    }
+
+    public void OnFaint(IPokemon pokemon, DamageSource source)
+    {
+        if (pokemon == _user)
+            RemoveSelf();
+    }
+
+    public void OnSwitchOut(IPokemon oldPokemon, byte position)
+    {
+        if (oldPokemon == _user)
+            RemoveSelf();
+    }
+}