"Fairmath System": Snowman (v1.3.0)

Summary

"Fairmath System" demonstrates how to re-create the Fairmath system found in ChoiceScript. Based on a percentage operation, increase and decrease changes the value by a percentage as the difference between the original and adjusted value.

This example uses functions increase() and decrease() as part of a created global window.setup.fairmath. These can be called through using the Underscore template functionality to define, use, and show the values of the functions in any one passage.

Live Example

Twee Code

:: StoryTitle
Fairmath in Snowman

:: UserScript[script]
// Create a global object
window.setup = window.setup || {};

// Create a fairmath global object
window.setup.fairmath = {};

// Create an 'increase' function
setup.fairmath.increase = function(x,y) {
    return Math.round(x+((100-x)*(y/100)));
};

// Create a "decrease" function
setup.fairmath.decrease = function(x,y) {
    return Math.round(x-(x*(y/100)));
};

:: Start
Decrease 100 by 50% using Fairmath:
<%= setup.fairmath.decrease(100, 50) %>

Increase 50 by 50% using Fairmath:
<%= setup.fairmath.increase(50, 50) %>

Download: Twee Code