Twine Demos

Crafting Demo Twee Code

I'd provide the raw file but free accounts can't upload arbitrary file types :(
:: StoryTitle
Crafting Demo

:: StoryData
{
	"ifid": "BAC55E3F-FC56-4187-9F6E-3A00E1ED4B1F",
	"zoom": 1
}

:: StoryCaption
Functions to exchange two sets of arbitrary items.

:: Inventory Scripts [script]
setup.hasEnough = function(recipe, pantry) {
		return Object.keys(recipe).every(x => recipe[x] <= pantry[x]);
};

setup.consume = function (recipe, pantry) { Object.keys(recipe).forEach(x => pantry[x]-= recipe[x]); };
setup.produce = function (result, pantry) { Object.keys(result).forEach(x => pantry[x]+= result[x]); };


setup.craft = function (recipe, result, pantry) {
		if(setup.hasEnough(recipe, pantry)) {
				setup.consume(recipe, pantry);
				setup.produce(result, pantry);
				}
};

:: StoryInit
<<set
$inventory = {
		"gold": 0,
		"muffin vouchers": 3,
		"muffins": 0
		};

$standard = {"muffin vouchers": 1};

$greedy = {"muffin vouchers": 2};
>>

:: StoryMenu
[[Notes]]

:: Notes
!! Notes
This began as a demonstration of a player inventory that could hold multiple items of the same type.

It gradually expanded to include some functions for exchanging arbitrary lists of items.

The original idea was to make a crafting system, but you could build a conventional shop by limiting your requirements to gold or some other currency.
The requirements and rewards are just objects with strings as keys and integers as values:
{{{
$inventory = {"muffin vouchers":3};
$muffin_requirement = {"muffin vouchers" : 1};
$muffin_reward = {"muffins": 1};
$setup.craft($muffin_requirement, $muffin_reward, $inventory);
}}}
<<return>>

:: Start
<<include Inventory>>
<<include "Coupon Exchange">>
<<include "Greedy Coupon Exchange">>
<<include "Generous Coupon Exchange">>

:: Inventory
!! Inventory
<nobr><table>
<<for _item, _qty range $inventory>>
<<if _item == "gold" or _qty > 0>><tr><td>_qty</td><td>_item</td></tr><</if>>
<</for>></table></nobr>

:: Coupon Exchange
!! Coupon Exchange
Exchange vouchers for muffins here.
<<if setup.hasEnough($standard, $inventory);>>\
<<button "Trade 1 to 1">>\
<<run
setup.craft({"muffin vouchers": 1}, {"muffins":1}, $inventory);
Engine.play(passage());>>
<</button>><<else>><button class="macro-button" title="You need a voucher to get a muffin." disabled>Trade</button><</if>>

:: Greedy Coupon Exchange
!! Greedy Coupon Exchange
Exchange vouchers for muffins here.
<<if setup.hasEnough($greedy, $inventory);>>\
<<button "Trade 2 to 1">>\
<<run
setup.craft({"muffin vouchers": 2}, {"muffins":1}, $inventory);
Engine.play(passage());>>
<</button>><<else>><button class="macro-button" title="You need TWO vouchers to get a muffin." disabled>Trade</button><</if>>

:: Generous Coupon Exchange
!! Generous Coupon Exchange
Exchange vouchers for muffins here.
<<if setup.hasEnough($standard, $inventory);>>\
<<button "Trade 1 to 2">>\
<<run
setup.craft({"muffin vouchers": 1}, {"muffins":2}, $inventory);
Engine.play(passage());>>
<</button>><<else>><button class="macro-button" title="You need a voucher to get two muffins." disabled>Trade</button><</if>>