Rolling a variable number of dice, based on a stat

mr_bobn

Hello,

First post, here

I'm setting up my first Twine game using sugarcube 2.x and I'm interested in some possibilities with the random macros.

I'm wanting to set up a situation where a character is able to roll a number of separate dice that depends on a previously generated statistic, for instance, rolling 2 dice if their statistic is 2; 3 dice if it is 3, etc.

I'd like the Twine to show the results of each dice separately, and then evaluate and count the number of 'successes' which have reached a target number.

I'm familiar with how to use, for instance:

<<set $l2t1 = random(1,6)>> <<print $l2t1>>

to generate a d6 roll and display it, and

<<if $l2t1 lte 4>> "You have failed"<<set $l2t1CHECK eq "FALSE">>
<<else>> "you have succeeded" <<set $l2t1CHECK eq "TRUE">>
<<endif>>

To evaluate success against a target number of 4 and log that success with another variable for later reference


...but is there a way to have the Twine iterate this process a number of times that is equal to a particular variable, and then log and print the results of each roll, as well as then the number of successes?

I'm imagining it printing something like:

"Your agility is 3"
"Your rolls are: 4, 1, 6"
"Those 2 successes are enough to pass the test"

I hope this is clear and I'm sorry if I have left anything out

Thanks heaps!

mykael

Try creating a recursive widget.

Process one roll, decrement the number of rolls required and, if it's greater than 0, call yourself again. Should unwind ok once it hits zero.

greyelf

Or you could use the <<for>> macro in the widget.

TheMadExile

A for loop would have been my first suggestion as well. For example: (goes in a widget-tagged passage)

/*
	<<rollover D6_ROLL_POOL SUCCESSES_REQUIRED TARGET_NUMBER>>

	e.g.
		→ Roll 5 d6, requiring 3 successes against a roll-over target of 4.
		<<rollover 5 3 4>>

		→ Roll $dice d6, requiring $required successes against a roll-over target of $target.
		<<rollover $dice $required $target>>
*/
<<widget "rollover">>\
<<silently>>
<<set _required to $args[1]>>
<<set _target to $args[2]>>
<<set $rolls to []>>
<<set $successes to 0>>
<<for _i to $args[0]; _i > 0; --_i>>
<<set _roll to random(1, 6)>>
<<set $rolls.push(_roll)>>
<<if _roll gt _target>><<set $successes++>><</if>>
<</for>>
<</silently>>\
Your target is <<=_target>> and you require <<=_required>> successes.
Your rolls are: $rolls.
Yielding $successes success<<if $successes neq 1>>es<</if>>, \
which <<if $successes neq 1>>are<<else>>is<</if>> \
<<if $successes lt _required>> not<</if>> \
enough to pass the test.
<</widget>>

Post-invocation, the variables $rolls (array) and $successes (integer) are set to an array of all roll values and the number of successes, respectively.

mr_bobn

Thanks so much, people- these are great ideas I'll try them out tonight. Really appreciate the help!

mykael

Oh, yes. Forgot about that...

isakg

If I want the code TheMadExile posted to additionally emulate the old White Wolf "exploding" mechanic (re-roll any die that crits), would adding this be the correct way to achieve it?

<<if _roll eq 10>><<set $args[0]++>><<endif>>

TheMadExile

No. To do it simply, you'd want to do something like the following.

FIND:

<<if _roll gt _target>><<set $successes++>><</if>>
<</for>>

REPLACE WITH:

<<if _roll gt _target>><<set $successes++>><</if>>
<<if _roll eq 10>><<set _i++>><</if>>
<</for>>

Since the loop variable (_i) is decremented as part of the loop, incrementing it adds another roll.