hearthstone-card-cost

Hearthstone card cost predictor

Installation

Install with npm

$ npm install hearthstone-card-cost

Accuracy

This was generated from a linear model taking most card properties into account. Some cards such as spells should use attack as their damage value. AOE effects are not yet modelled.

Cards that have special effects are not modelled, such as Molten Giant. These cards can have a prediction error of >2 mana. If you take a random card in hearthstone, this model will give you a correct answer about 50% of the time. It's correct within ± 1 mana roughly 80% of the time.

After I get a better dataset, I will be able to update the model to better reflect the special effects.

Example

var predict = require('hearthstone-card-cost')

// Predict Al'Akir!
var cost = predict({ 
  attack: 3,
  health: 5,
  taunt: 1,
  charge: 1,
  divineShield: 1,
  windfury: 1
})

// predicted cost === 6
// Al'Akir is overpriced!

API

predict(attributes)

Returns a rounded cost estimate, for non-rounded estimates use predict.real

attributes:

• attack: number
• health: number
• battlecry: 0 | 1
• charge: 0 | 1
• divineShield: 0 | 1
• freeze: 0 | 1
• stealth: 0 | 1
• taunt: 0 | 1
• windfury: 0 | 1

predict.real(attributes)

Non-rounded cost estimate

License

The MIT License (MIT)

Copyright (c) 2014 William Casarin

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.