RAND and Functions - Printable Version

RAND and Functions - Printable Version

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+--- Thread: RAND and Functions (/Thread-RAND-and-Functions)

RAND and Functions - pinku - 02-03-2014 06:06 PM

Hey!

I have been messing with RAND, skills and such stuff, and I'm kinda stuck to understand something.. I'm sorry if this is dumb.

I want the first function1 to be harder to happen than the others. Function1 the hardest, function6 the easiest.

So I thought, I would start from the hardest, if it doesn't happen, we move to next one.

Code:

ON=@DClick

IF (<EVAL RAND(500)>) <= (100 + <SRC.SKILL>))

function1_happens

RETURN 1

ELSEIF (<EVAL RAND(400)>) <= (100 + <SRC.SKILL>))

function2_happens

RETURN 1

ELSEIF (<EVAL RAND(300)>) <= (100 + <SRC.SKILL>))

function3_happens

RETURN 1

ELSEIF (<EVAL RAND(250)>) <= (100 + <SRC.SKILL>))

function4_happens

RETURN 1

ELSEIF (<EVAL RAND(220)>) <= (100 + <SRC.SKILL>))

function5_happens

RETURN 1

ELSE

function6_happens

ENDIF

RETURN 1

Now, what really happens is: Always function1 or function2 runs, always! I don't know where I'm going wrong.

If I try on first function, using 50 skill, for example:

Code:

IF (<EVAL RAND(1000)>) <= (100 + <SRC.SKILL>)

So, 150 can't be higher than RAND(1000) all the single time, but it still happens non stop when I double click.

Any tips for me? Am I plain stupid?
Others and better ways to do it are welcome too!

Thanks a lot!

RE: RAND and Functions - Mazer - 02-03-2014 09:49 PM

Im sorry im not best scripter in UO, but as i understand EVAL RAND(500) is random number between 0 and 500 second i dont really know how SRC.SKILL return value 50.5% skill its 505 or 50.5.
And you should start from easiest function. With 50% of skill if its 50.0. The chance to get last ELSEIF is about 1:30000. You really want this ?
If you could declare random value in the beginning of the script. etc
x = EVAL RAND(500) + SKILL if player have 50% skill and he rolls 100, x would be 150 then declaring chances

if X >= 550 then
function1 (rarest)
elseif x >= 400 then
function2
elseif x >= 300 then
function3
elseif x < 300 then
function4

function1 gona happen 1:500 times with 50% skill and 50:500 with 100% skill
function 2 gona happen 150:500 times with 50% skill and 200:500 with 100% skill
function 3 gona happen 250:500 times with 50% skill and 300:500 with 100% skill
and function4 gona happen 350:500 times with 50% skill and 400:500 with 100% skill

RE: RAND and Functions - Alaric - 02-03-2014 10:15 PM

I wrote almost the same but removed that because i found out, that with this system you will have with 0%skill 0%chance to do the best thing. I was quite confused how he wants it to work and how to do it. I would have to sit back and look at it closely.

After evaluation skill value should be 10times higher than real value. 100%=1000.

RE: RAND and Functions - Coruja - 02-04-2014 12:46 PM

probably the math fails because 100.0 skill = 1000 value, not 100

also, just replace the formula with real numbers and you will see the mistake

Code:

(<EVAL RAND(500)> <= 100+<SRC.SKILL>)

=

(0~499 <= 100+1000)

=

(0~499 <= 1100)

this will always return true because any number between 0~499 is <= 1100, thats why you always got 'function1_happens' as result

RE: RAND and Functions - pinku - 02-04-2014 04:58 PM

(02-03-2014 09:49 PM)Mazer Wrote: Im sorry im not best scripter in UO, but as i understand EVAL RAND(500) is random number between 0 and 500 second i dont really know how SRC.SKILL return value 50.5% skill its 505 or 50.5.
And you should start from easiest function. With 50% of skill if its 50.0. The chance to get last ELSEIF is about 1:30000. You really want this ?
If you could declare random value in the beginning of the script. etc
x = EVAL RAND(500) + SKILL if player have 50% skill and he rolls 100, x would be 150 then declaring chances

if X >= 550 then
function1 (rarest)
elseif x >= 400 then
function2
elseif x >= 300 then
function3
elseif x < 300 then
function4

function1 gona happen 1:500 times with 50% skill and 50:500 with 100% skill
function 2 gona happen 150:500 times with 50% skill and 200:500 with 100% skill
function 3 gona happen 250:500 times with 50% skill and 300:500 with 100% skill
and function4 gona happen 350:500 times with 50% skill and 400:500 with 100% skill

Thank you, a lot!
I did what you said with a simple LOCAL and I could make the things happen, plus, making my char say the numbers rolled. Smile

(02-03-2014 10:15 PM)Alaric Wrote: I wrote almost the same but removed that because i found out, that with this system you will have with 0%skill 0%chance to do the best thing. I was quite confused how he wants it to work and how to do it. I would have to sit back and look at it closely.

After evaluation skill value should be 10times higher than real value. 100%=1000.

Thanks, I could swear I was using the RAND wrong, in the end, it was the skill 10 times higher, just like you said.
Thank you!

(02-04-2014 12:46 PM)Coruja Wrote: probably the math fails because 100.0 skill = 1000 value, not 100

also, just replace the formula with real numbers and you will see the mistake

Code:

(<EVAL RAND(500)> <= 100+<SRC.SKILL>) = (0~499 <= 100+1000) = (0~499 <= 1100)
this will always return true because any number between 0~499 is <= 1100, thats why you always got 'function1_happens' as result

Thank you, Coruja!
Your help was much appreciated! Smile