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Type Casting maybe?

by Michael Cozzolino · in Torque Game Engine · 12/03/2004 (8:04 am) · 4 replies

Ok bear with me. I think I have done what i'm asking in other languages. It's been a while. Looked though my books and nothing is popping out at me.

Here is what i'm trying to do.

I have pickups that have a value in there datablock. ie.

value = 5;

value = "*";


I'm trying to get the value of a pickup and then take the value of another pickup that is either a (*, /, +, or -) and apply that operand to a third pickup or other value.

Any examples or anything would be greatly appreciated.

Thanks,
Coz
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Associate Ian Omroth Hardingham
#1
12/03/2004 (8:07 am)
This in script right? If you feel like creating a massive security hole, try this:

eval("%finalValue =" SPC value1 SPC valueModifier SPC value2 SPC ";");

Zod
#2
12/03/2004 (8:27 am)
Well the second value is treated as a string. Also since your are trying to do math you need to set that second value differently..


value = 5;

value = "++" // Add 1
value = "--"; // Subtract 1
value = "\ 2"; // Divide by 2
value = "* 2; // Multiply by 2

%endValue = db1.value @ db2.value;

This should work. You can also probably get away with..

value = 5;

value = "+=" 
value = "-=";
value = "\";
value = "*;

%endValue = db1.value @ db2.value @ db1.value;

I am not 100% sure this will work but try it before resorting to eval()

Torque 3D Owner Michael Cozzolino
Big Monk Games
#3
12/03/2004 (8:39 am)
Thanks Zod. I will try. How is the eval() a security hole?

Associate Ian Omroth Hardingham
#4
12/03/2004 (9:10 am)
Because someone could maliciously change one of the values to execute any code on the server. Tribes 2 had a vote-eval hole. For instance, if one of the object's values was changed to:

"; runMyMaliciousFunction();"

Then the eval would run that code. Tribes 2 had an eval hole in it's voteing method.

Ian

PS: Is this the Zod of Tribes 2 mod/mapping fame? If so I'm honoured to be in the same thread as you :)