[1.188.105] You can put negative inventory amount in containers using PBs

Hello there,

today on our server we stumbled upon a player using a rather interesting kind of script in his PB. I was able to verify it on SP as well:

This script uses a "ContainerX" takes the first Item it finds and puts the number passed as argument as negative amount in the container.

This negative amount cannot be changed in anyway and the whole container starts to behave a bit weird.

So the bug is that its possible to put in a negative amount of Items in the container. With a negative amount of for example 10,000,000 platinum ingots there is enough negative mass to completely overfill a container.

See attached Screenshot:

This shows 2 small cargo containers on a small grid ship.

On the right we have 26,6k platinum ingots that a small container can hold on 10x inventory.

On the left we have -10,000,000 platinum ingots that allows to easily put in 100k more ingots and steelplates. As you can see there is still negative mass and volume available to put more in.

Luckily the ships mass does not get reduced as it seems to ignore negative masses. So ship mass seems to be calculated differently.

See the Script below.

IMyCargoContainer XC;

public Program()
{
    XC = GridTerminalSystem.GetBlockWithName("ContainerX") as IMyCargoContainer;
}

public void Main(string argument)
{
    int Amount = Convert.ToInt32(argument);
    CreateAntimatter(Amount);
}

public void CreateAntimatter(int Amount)
{

    IMyInventory InvR = XC.GetInventory();
    List<IMyInventoryItem> ItemsR = InvR.GetItems();
    IMyInventoryItem ItemR = ItemsR[0];
    InvR.TransferItemFrom(InvR, 0, 1, true, -Amount);

}