rjrahul / simple-tote-bet

A simple Tote Betting game

simple-tote-bet

This application (written in NodeJS) is a simple Tote betting game. It allows to calculate dividends for the bets placed on racing game. Dividends are calculated based on rules as specified below for different type of bets (product).

WIN bet

• Punters must choose the winner of a race
• A 15% commission from the Win pool is deducted
• The remaining total is split, proportionally to stake, amongst punters who chose the correct winning horse.

Place bet

• Punters must choose the first, second or third place horse in a race
• A 12% commission from the Place pool is deducted
• The total pool is split evenly into 3 and each of these amounts is then split, proportionally to stake, amongst the punters who chose each placed horse

Exacta bet

• Punters must choose the first and second place runners in a race in the correct order
• An 18% commission from the Exacta pool is deducted
• The remaining total is split, proportionally to stake, amongst punters who chose the correct first and second horse in correct order

After a race has been run, the dividends are published for each product. This is the return for a $1 stake for each paying selection in the race. All dividends are calculated to the nearest $0.01.

Compile and Run

To run the application follow below steps

• Install NodeJS version 4 or above (tested till version 8)
• Clone the respository
• Run npm install within the cloned directory
• Start in interactive command mode using command node . or npm start

Input samples

When application is run a new race is started immediately. A command prompt > is exposed to allow you to enter bet and at the end race result.

Input to the application is to be specified in following ways

Bet

A bet is specified as follows

Bet:<product>:<selections>:<stake> where

• <product> is one of W, P, E representing Win, Place or Exacta bet resepectively
• <selections> is either a single runner number (e.g. 4 ) for Win and Place, or two runner numbers (e.g. 4,3 ) for Exacta
• <stake> is an amount in whole dollars (e.g. 35)

For example

• Bet:W:3:5 is a $5 bet on horse 3 to win
• Bet:P:2:10 is a $10 bet on horse 2 to come either first, second or third
• Bet:E:5,7:15 is a $15 bet on horse 5 and 7 to come first and second in that order

Race Result

Race result is specified as follows. Once entered race is considered finished and dividend is calculated immediately.

Result:<first>:<second>:<third>

For example

• Result:5:3:8 specifies horse 5, 3 and 8 have won first, second and third position respectively

Output

Output dividends are shown on screen in following format

<product>:<winning selection>:<dividend>

For example

W:2:$2.61 # Win bet on horse 2 yields $2.61
P:2:$1.06 # Place bet on horse 2 yields $1.06
P:3:$1.27 # Place bet on horse 3 yields $1.27
P:1:$2.13 # Place bet on horse 1 yields $2.13
E:2,3:$2.43 # Exacta on horses 2,3 yields $2.43

License

MIT