Mixin for traits

ChargeBarTrait.java

@Mixin({FallingBlockDestroyerItem.class, FallingBlockStabiliserItem.class})
public abstract class ChargeBarTrait extends Item implements IPolarisedItem
{
    // Make the compiler happy
    // Ignored by Mixin
    public ChargeBarTrait(Settings settings)
    {
        super(settings);
    }

    @Override
    @Overwrite // Error if another trait overrides the same method
    public boolean isItemBarVisible(ItemStack stack)
    {
        return true;
    }

    @Override
    @Overwrite // Error if another trait overrides the same method
    public int getItemBarStep(ItemStack stack)
    {
        IPolarChargeStorage chargeable = PolarApi.CHARGE_STORAGE.get(stack);
        // storedCharge units of 1 / damageBarWidth / maxCharge and rounded
        return Math.round(chargeable.getStoredCharge() * 13.0F / chargeable.getMaxCharge());
    }

    @Override
    @Overwrite // Error if another trait overrides the same method
    public int getItemBarColor(ItemStack stack)
    {
        return switch (getPolarity(stack))
        {
            case RED -> MathHelper.packRgb(227, 66, 52);
            case BLUE -> MathHelper.packRgb(0, 128, 255);
            default -> super.getItemBarColor(stack);
        };
    }
}