Example usage:

const percent = new ScoreTemplate('whole := whole * percent; whole /= 100')
percent.apply({
    whole: Objective.get('stats')('health'),
    percent: Objective.get('status')('poison')
})
percent.apply({
    whole: Objective.get('stats')('mana'),
    percent: 37
})

The code above is equivalent to:

Objective.get('stats')('health')
    .multipliedBy(Objective.get('status')('poison'))
    .divide(100)
Objective.get('stats')('mana')
    .multipliedBy(37)
    .divide(100)

Supported operators:

• + Add two sides, return new score
• - Subtract two sides, return new score
• * Multiply two sides, return new score
• / Divide two sides, return new score
• += Add the right side to the left side
• -= Subtract the right side from the left side
• *= Multiply the left side by the right side
• /= Divide the left side by the right side
• = Set the score on the left side to the right side
• := Set the identifier on the left side to the score on the right side