Cmd_if_type_effectiveness

static void Cmd_if_type_effectiveness(void)
{
    u8 damageVar;

    gDynamicBasePower = 0;
    gBattleStruct->dynamicMoveType = 0;
    gBattleScripting.dmgMultiplier = 1;
    gMoveResultFlags = 0;
    gCritMultiplier = 1;

    gBattleMoveDamage = AI_EFFECTIVENESS_x1;
    gCurrentMove = AI_THINKING_STRUCT->moveConsidered;

    // TypeCalc does not assign to gMoveResultFlags, Cmd_typecalc does
    // This makes the check for gMoveResultFlags below always fail
    // This is how you get the "dual non-immunity" glitch, where AI
    // will use ineffective moves on immune pokémon if the second type
    // has a non-neutral, non-immune effectiveness
    // This bug is fixed in this mod
    gMoveResultFlags = TypeCalc(gCurrentMove, sBattler_AI, gBattlerTarget);

    if (gBattleMoveDamage >= 180)
        gBattleMoveDamage = AI_EFFECTIVENESS_x4;
    if (gBattleMoveDamage <= 15)
        gBattleMoveDamage = AI_EFFECTIVENESS_x0_25;
    if (gBattleMoveDamage >= 90)
        gBattleMoveDamage = AI_EFFECTIVENESS_x2;
    if (gBattleMoveDamage <= 30)
        gBattleMoveDamage = AI_EFFECTIVENESS_x0_5;

    if (gMoveResultFlags & MOVE_RESULT_DOESNT_AFFECT_FOE)
        gBattleMoveDamage = AI_EFFECTIVENESS_x0;

    // Store gBattleMoveDamage in a u8 variable because gAIScriptPtr[1] is a u8.
    damageVar = gBattleMoveDamage;

    if (damageVar == gAIScriptPtr[1])
        gAIScriptPtr = T1_READ_PTR(gAIScriptPtr + 2);
    else
        gAIScriptPtr += 6;
}