Archery Tournament

function solve(input) {
    let field = input.shift().split('|').map(Number);
    let fieldIndex = 0;
    let points = 0;

    for (let i = 0; i < field.length; i++) {
        let splitted = input[i].split('@');
        let command = splitted[0];
        let commandIndex = Number(splitted[1]);
        let length = Number(splitted[2]);

        switch (command) {
            case 'Shoot Left':
                if (commandIndex >= 0 && commandIndex <= field.length - 1) {
                    fieldIndex -= commandIndex + length;
                    if (fieldIndex < 0) {
                        fieldIndex = field.length - length;
                    }
                    field[fieldIndex] -= 5;
                    points += 5;
                    break;
                }

            case 'Shoot Right':
                if (commandIndex >= 0 && commandIndex <= field.length - 1) {
                    fieldIndex += commandIndex + length;
                    if (fieldIndex >= field.length) {
                        fieldIndex = length - 1;
                    }
                    field[fieldIndex] -= 5;
                    points += 5;
                    break;
                }

            case 'Reverse':
                let reversed = field.reverse();
                field === reversed;
                break;

            case 'Game over':
                console.log(field.join(' - '));
                console.log(`Iskren finished the archery tournament with ${points} points!`);
        }
    }
}

solve([
    '10|10|10|10|10',
    'Shoot Left@0@2',
    'Shoot Right@4@5',
    'Shoot Right@6@5',
    'Reverse',
    'Game over'
]
)