Implements beastboost, berserk, big pecks, blaze, and bulletproof abilities

Scripts/Abilities/BeastBoost.as

@@ -1,4 +1,5 @@
 namespace Gen7 {
+    [Ability effect=BeastBoost]
     class BeastBoost : PkmnScript {
         void OnFaintingOpponent(ExecutingMove@ move, Pokemon@, uint8) override {
             Statistic increaseStat = Statistic::HP;

Scripts/Abilities/Berserk.as

@@ -1,4 +1,5 @@
 namespace Gen7 {
+    [Ability effect=Berserk]
     class Berserk : PkmnScript {
         void OnDamage(Pokemon@ pokemon, DamageSource, uint old, uint new) override {
             if (float(old) / pokemon.MaxHealth >= 0.5f && float(new) / pokemon.MaxHealth < 0.5f) {

Scripts/Abilities/Bulletproof.as

@@ -0,0 +1,10 @@
+namespace Gen7 {
+    [Ability effect=Bulletproof]
+    class Bulletproof : PkmnScript {
+        void IsInvulnerable(ExecutingMove@ move, Pokemon@, bool &inout isInvulnerable) {
+            if (move.UseMove.HasFlag("ballistics")){
+                isInvulnerable = true;
+            }
+        }
+    }
+}

Scripts/Abilities/ChangeMoveType.as

@@ -1,20 +1,19 @@
 namespace Gen7 {
     [Ability effect=ChangeMoveType]
     class ChangeMoveType : PkmnScript {
-        string _fromType;
-        string _toType;
+        uint8 _fromType;
+        uint8 _toType;
         bool _changedLastAttack = false;
 
-        void OnInitialize(const narray<EffectParameter@>@ parameters) override {
-            _fromType = parameters[0].AsString();
-            _toType = parameters[1].AsString();
+        void OnInitialize(const BattleLibrary@ library, const narray<EffectParameter@>@ parameters) override {
+            auto lib = library.StaticLibrary.TypeLibrary;
+            _fromType = lib.GetTypeId(parameters[0].AsString());
+            _toType = lib.GetTypeId(parameters[1].AsString());
         }
 
         void ChangeAttackType(ExecutingMove@ move, Pokemon@ target, uint8 hit, uint8 &inout t) override {
-            auto lib = move.User.Battle.Library.StaticLibrary.TypeLibrary;
-            auto fromTypeId = lib.GetTypeId(_fromType);
-            if (fromTypeId == t){
-                t = lib.GetTypeId(_toType);
+            if (_fromType == t){
+                t = _toType;
                 _changedLastAttack = true;
             }
             else{

Scripts/Abilities/PowerUpType.as

@@ -0,0 +1,16 @@
+namespace Gen7 {
+    [Ability effect=PowerUpType]
+    class PowerUpTypeAbility : PkmnScript {
+        uint8 _typeId;
+
+        void OnInitialize(const BattleLibrary@ library, const narray<EffectParameter@>@ parameters){
+            _typeId = library.StaticLibrary.TypeLibrary.GetTypeId(parameters[0].AsString());
+        }
+
+        void ModifyOffensiveStatValue(ExecutingMove@ move, Pokemon@ target, uint8, float &inout value) override {
+            if (move.Move.MoveData.Type == _typeId){
+                value *= 1.5f;
+            }
+        }
+    }
+}

Scripts/Abilities/PreventDefLowering.as

@@ -0,0 +1,10 @@
+namespace Gen7 {
+    [Ability effect=PreventDefLowering]
+    class PreventDefLowering : PkmnScript {
+        void PreventStatBoostChange(Pokemon@, Statistic stat, int8 amount, bool &inout prevent) override {
+            if (stat == Statistic::Defense && amount < 0) {
+                prevent = true;
+            }
+        }
+    }   
+}