Rename battle terrain to environment

src/battle_anim_utility_funcs.c

@@ -109,7 +109,7 @@ void AnimTask_BlendBattleAnimPalExclude(u8 taskId)
 void AnimTask_SetCamouflageBlend(u8 taskId)
 {
     u32 selectedPalettes = UnpackSelectedBattlePalettes(gBattleAnimArgs[0]);
-    switch (gBattleTerrain)
+    switch (gBattleEnvironment)
     {
     case BATTLE_TERRAIN_GRASS:
         gBattleAnimArgs[4] = RGB(12, 24, 2);
@@ -937,9 +937,9 @@ static void UpdateMonScrollingBgMask(u8 taskId)
     }
 }
 
-void AnimTask_GetBattleTerrain(u8 taskId)
+void AnimTask_GetBattleEnvironment(u8 taskId)
 {
-    gBattleAnimArgs[0] = gBattleTerrain;
+    gBattleAnimArgs[0] = gBattleEnvironment;
     DestroyAnimVisualTask(taskId);
 }