Node Js Blackjack
engine-blackjack - implement blackjack game into your software.
___Available game parameters
There are many possible configuration. We are implementing Standard and Custom optionsso that you can easily combine flags to create games according with your skill/needs.
I'm having trouble creating a Blackjack program to display in an HTML page using an external Javascript file. I don't need to label my cards, and I've created a dealer that will always be between 17-21 in score. I'm unsure of what parts of my code is completely wrong and what needs a bit of tweaking.
So naturally, with blackjack, I just ignored the suites, since they don’t matter. Then, I went through and changed all the KINGS, QUEENS and JACKS value to 10. Finally for the Ace, my thought on that is that, you always want the value of the Ace to be 11, unless your total hand value is over 21, then you’d want the Ace to be 1, since you. Hey, this is something that I have been working on for a little while now and I wanted to share it with you guys and see how you like it!! Please comment on anything that I could do better. Thanks P.S stake means bet and it cant be higher than the bank. Slot machines are popular worldwide for Node Js Blackjack their record-breaking jackpots and exciting themes. With few rules and strategies to consider, slot games are perfect for new casino players. Try some free slot games now or discover online slots to play for real money.
Standard variations
- number of
decks
, default is1
standOnSoft17
, turn On/Off the 'Soft 17' rule, defaulttrue
double
, ability to double after deal, defaultany
none
not allowedany
any allowed9or10
9or10or11
9thru15
split
, On/Off the possibility to split after deal, defaulttrue
doubleAfterSplit
, On/Off the possibility to double after split (split and double must be 'on'), defaulttrue
surrender
, on/off the ability to surrender after deal, defaulttrue
insurance
, on/off the ability of ensuring a hand, defaulttrue
Custom variations
There are many variations of this game and I really do not know them all, but if you ask me I will add them.Here a list of direct (and maybe exotic) requests:
showdownAfterAceSplit
, after the deal and if player receives 2 aces and a split is called, a card is dealt on each side and showdown phase is initialized (the game ends) defaulttrue
but it depends onsplit
.
Install
If you are using npm, to get the last version:
yarn add engine-blackjack
npm install engine-blackjack
I'm currently publishing the master branch into NPM until I get the first tag.Ideally, only tagged commits will be uploaded as NPM after that moment.
NOTE: Master branch is under development. Be sure to 'ONLY' use tagged version for your production.
Quick Start
Once obtained the library just requireGame
and actions
.
At this point you can initialize a new game by calling the Game constructor
.
Creating a new game
In this cases, no state is passed to the constructor:
- the default state is loaded into game
- game is ready to
dispatch
actions to alter the state
Getting current state
At any moment we can require the current state of the game by calling the getState()
.
The content of the state and its schema depends on the stage of the game. In this casewe initialized the game without any precedent state, so we will receive something like this:
For the moment the only thing we should note is that the fieldstage
tells us 'game is ready'.
Dispatching actions
The only way to mutate the state of the game is to dispatch actions. Some actions are required by the 'user',some other actions are dispatched by the engine to 'complete' the game.
NOTE: In a real game, players and dealer are allowed to 'do actions'. The engine will 'impersonate the dealer' at some point, depending on the last action and the state.
Project Structure
Guidelines that I follow
Inspired by projects done by people I consider smart, like Flux or Redux,and motivated by the desire to introduce the functional paradigm in my work day:
- platform agnostic (if you can run Node, you are ok. Node can run everywhere)
- zero-dependencies (only dev-dependencies)
- TDD, break every single game action to be testable
- Implement everything that makes sense (and described in WikipediA)
Everything you need to hack is of course inside /src
or /test
andnpm test
does what you expect (plus a lot of console.log for the moment)
Actions
see the /src/actions.js
Engine exposes actions, once invoked, the state of the game is changed.The following list represent the actions that can be dispatched by from the public API.
- restore
- deal
- insurance
- double
- split
- hit
- stand
And, those are actions that are internally called in determinate stages by the engine itself.
- showdown
- dealerHit
- invalid
Stages
See the /src/game.js
The stage represent a moment in the game. The stage is directly related with the action allowed in that particular moment.
Current available stages are:
- ready
- player-turn-left
- player-turn-right (optional)
- showdown
- dealer-turn
- done
Logic
The game logic is implemented into /src/engine.js
. There some more methods, strictly related to the tests and for the moment are not tested (who test the test is not yet solved).There is a specific design limitation currently in the code. Currently it support only 2 position, user can 'split' but it is not possible at the moment to create more complex variants of the game.
NOTE: If you are interested in the random components, check out the shuffle()
function.
Test
Run tests by calling yarn test
or npm test
Node Js Blackjack Games
You can also write specific test cases using this syntax. For more details have a look at game.spec.js
Jest will care about the following tasks:
- create a new game
- initialize it by injecting
♠10 ♦1 ♥5 ♣6 ♠11 ♦10
at the and of the deck - run the desired
restore
,deal
,split
and finallystandR
(stand on right) - return the current state
- compare if
stage
is 'done' at the end
If you specify the finalWin
the test will compare the final winning.
Side Bets
Side bets are part of the 'multi-game strategy'. They are returned to the client as 'available bets' and they can be sets in the deal()
payload.Engine will calculate the side bet result during the deal()
Node Js Blackjack Tool
engine-blackjackCopyright (C) 2016 Marco Casula
This program is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See theGNU General Public License for more details.
Node Js Blackjack Tutorial
You should have received a copy of the GNU General Public License alongwith this program; if not, write to the Free Software Foundation, Inc.,51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Node Js Blackjack Game
Thanks @webpty for logos