Player sprite flipped? What causes that

[MattCatDad]

I'm talking about in emerald battle frontier - battle tower multi battles

Before the fight starts, it shows your player character and the partner you chose standing next to each other,
but the player character front sprite is horizontal flipped for some reason. Anyone know what line of code causes that?

 

[ShinyDragonHunter]

I'm assuming you're using a custom trainer sprite that's after all of the vanilla ones?

EDIT: there is a chance I've misread. If it's not during the send out anim, that's normal behaviour as it's to indicate they're facing the opponent

 

[MattCatDad]

Right, It's not during the send out animation. Battle tower Multi-battles display your front sprite and also your partner of choice's where send out animations would otherwise be.

I have a reason to keep mine the same orientation and not flip it. Do you have any suggestions for me?

 

[AdolescentSeagull]

In the file battle_controller_player.c in the function PlayerHandleDrawTrainerPic, this block is what sets the player's sprite for Multi Battles when your partner isn't Steven:

// Use front pic table for any tag battles unless your partner is Steven.
    if (gBattleTypeFlags & BATTLE_TYPE_INGAME_PARTNER && gPartnerTrainerId != TRAINER_STEVEN_PARTNER)
    {
        trainerPicId = PlayerGenderToFrontTrainerPicId(gSaveBlock2Ptr->playerGender);
        DecompressTrainerFrontPic(trainerPicId, gActiveBattler);
        SetMultiuseSpriteTemplateToTrainerFront(trainerPicId, GetBattlerPosition(gActiveBattler));
        gBattlerSpriteIds[gActiveBattler] = CreateSprite(&gMultiuseSpriteTemplate, xPos, yPos, GetBattlerSpriteSubpriority(gActiveBattler));

        gSprites[gBattlerSpriteIds[gActiveBattler]].oam.paletteNum = IndexOfSpritePaletteTag(gTrainerFrontPicPaletteTable[trainerPicId].tag);
        gSprites[gBattlerSpriteIds[gActiveBattler]].x2 = DISPLAY_WIDTH;
        gSprites[gBattlerSpriteIds[gActiveBattler]].y2 = 48;
        gSprites[gBattlerSpriteIds[gActiveBattler]].sSpeedX = -2;
        gSprites[gBattlerSpriteIds[gActiveBattler]].callback = SpriteCB_TrainerSlideIn;
        gSprites[gBattlerSpriteIds[gActiveBattler]].oam.affineMode = ST_OAM_AFFINE_OFF;
        gSprites[gBattlerSpriteIds[gActiveBattler]].hFlip = 1;
    }

Basically you need to remove or comment out the line with hFlip, which is what horizontally flips the sprite.
Here is a before and after:

 

[MattCatDad]

Bless you! Thanks!!!