Scratch Game

A Java implementation of a scratch game that generates a matrix of symbols and calculates rewards based on winning combinations.

Requirements

• JDK 8 or higher
• Maven

Building the Application

1. Clone the repository
2. Build the application using Maven:

mvn clean package

This will create a JAR file in the target directory: scratch-game-1.0-SNAPSHOT-jar-with-dependencies.jar

Running the Application

Run the application with:

java -jar target/scratch-game-1.0-SNAPSHOT-jar-with-dependencies.jar --config config.json --betting-amount 100

Parameters:

• --config: Path to the configuration file (JSON)
• --betting-amount: Amount to bet

Configuration File

The configuration file defines:

• Matrix dimensions
• Symbol types and their reward multipliers
• Symbol probabilities
• Winning combinations

See the provided config.json for an example.

Output

The application generates a JSON output containing:

• The generated matrix
• The calculated reward
• Applied winning combinations
• Applied bonus symbol (if any)

Example output:

{
  "matrix": [
    ["A", "B", "C"],
    ["E", "B", "10x"],
    ["F", "D", "B"]
  ],
  "reward": 3000,
  "applied_winning_combinations": {
    "B": ["same_symbol_3_times"]
  },
  "applied_bonus_symbol": "10x"
}