SlotMachine class

A class that creates the slot machine.

It currently only creates slot machines with 5 slot lines, 10 images each. The slot machine is visualized through 2 DOM elements. canvasEl shows the slot machine itself, with rotating slots. resultEl is a span element that automatically populates with the current outcome in real time.

The SlotMachine is single-serving, i.e. it cannot be rolled more than once.

Constructors

SlotMachine(num probability, {Result predeterminedFirstResult, AnimationFrameFunction animationFrame, bool rerollable: false, String rerollEffectDescription})
Create a slot machine animation with given probability of success. [...]
factory
SlotMachine.fromProbability(num probability, {Result predeterminedResult, AnimationFrameFunction animationFrame})
Create a slot machine animation with probability of success (of the whole machine) being probability.
factory

Properties

allowCriticalFailure → bool
Whether or not to allow this slot machine to return critical failures.
final
allowCriticalSuccess → bool
Whether or not to allow this slot machine to return critical successes.
final
canvasEl ↔ CanvasElement
The canvas element that this library creates and that should be added to the DOM by the library's user.
read / write
hashCode → int
The hash code for this object. [...]
read-only, inherited
rerollable → bool
Whether or not this SlotMachine allows rerolling. If so, rerollEffectDescription must not be null.
final
rerollEffectDescription → String
What to show to user as the 'cost' of reroll. [...]
final
rerollEl ↔ DivElement
Element that the slot machine populates with buttons when reroll is in order.
read / write
resultEl ↔ SpanElement
The result element that this library updates with current result (i.e. what the slot machine would output if it was immediately halted, frozen in current state). [...]
read / write
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited
width → int
The width of each reel in pixels.
final

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
play() → Future<Result>
Start the slot machine session. This will roll the reels to completion once and will return the result of the first roll. [...]
rerollIfNeeded() → Future<SessionResult>
This method returns the final SessionResult. It may allow the user to reroll if that is needed.
roll() → Future<Result>
Start rolling the slot machine. Returns with the text of the result.
@Deprecated('Use play() instead')
toString() → String
Returns a string representation of this object.
inherited

Operators

operator ==(dynamic other) → bool
The equality operator. [...]
inherited

Constants

reelCount → const int
The number of reels (vertical lines) per each machine.
5
symbolCount → const int
Number of symbols in each reel.
10