Add check for Magic Guard to avoid taking recoil damage (#4578)

* Add check for Magic Guard to avoid taking recoil damage

* add test to verify a mon with magic guard does not take recoil damage

followed format from "Steel Beam hp loss is prevented by Magic Guard" test

* update format of tests with magic guard and some form of recoil damage

data/battle_scripts_1.s

@@ -7467,6 +7467,7 @@ BattleScript_MoveEffectConfusion::
 BattleScript_MoveEffectRecoil::
 	jumpifmove MOVE_STRUGGLE, BattleScript_DoRecoil
 	jumpifability BS_ATTACKER, ABILITY_ROCK_HEAD, BattleScript_RecoilEnd
+	jumpifability BS_ATTACKER, ABILITY_MAGIC_GUARD, BattleScript_RecoilEnd
 BattleScript_DoRecoil::
 	orword gHitMarker, HITMARKER_IGNORE_SUBSTITUTE | HITMARKER_PASSIVE_DAMAGE | HITMARKER_IGNORE_DISGUISE
 	healthbarupdate BS_ATTACKER

test/battle/ability/magic_guard.c

@@ -0,0 +1,17 @@
+#include "global.h"
+#include "test/battle.h"
+
+SINGLE_BATTLE_TEST("Magic Guard prevents recoil damage to the user")
+{
+    GIVEN {
+        ASSUME(gMovesInfo[MOVE_DOUBLE_EDGE].recoil == 33);
+        PLAYER(SPECIES_CLEFABLE) { Ability(ABILITY_MAGIC_GUARD); }
+        OPPONENT(SPECIES_WOBBUFFET);
+    } WHEN {
+        TURN { MOVE(player, MOVE_DOUBLE_EDGE); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_DOUBLE_EDGE, player);
+        HP_BAR(opponent);
+        NOT HP_BAR(player);
+    } 
+}

test/battle/move_effect/max_hp_50_recoil.c

@@ -91,8 +91,9 @@ SINGLE_BATTLE_TEST("Steel Beam hp loss is prevented by Magic Guard")
     } WHEN {
         TURN { MOVE(player, MOVE_STEEL_BEAM); }
     } SCENE {
-        NOT HP_BAR(player);
         ANIMATION(ANIM_TYPE_MOVE, MOVE_STEEL_BEAM, player);
+        HP_BAR(opponent);
+        NOT HP_BAR(player);
     }
 }
 

test/battle/move_effect/mind_blown.c

@@ -114,8 +114,9 @@ SINGLE_BATTLE_TEST("Mind Blown hp loss is prevented by Magic Guard")
     } WHEN {
         TURN { MOVE(player, MOVE_MIND_BLOWN); }
     } SCENE {
-        NOT HP_BAR(player);
         ANIMATION(ANIM_TYPE_MOVE, MOVE_MIND_BLOWN, player);
+        HP_BAR(opponent);
+        NOT HP_BAR(player);
     }
 }