smarty-pants.snk

({
    Next(snake: Snake, snakeApi: SnakeApi): Action {
    return function(views) {
        const directions = ['up', 'down', 'right', 'left'];

        const treatMatch = views.find(v => v.contains == 'treat');
        if (treatMatch) {
            return treatMatch;
        }

        let possibleActions = [...directions];
        const wallMatch = views.findIndex(v => v.contains === 'wall');
        if (wallMatch !== -1) {
            possibleActions.splice(wallMatch, 1);
        }

        const body = snake.getBody();
        const sViews = snake.views();

        const dirLeft = Object.entries(sViews)
            .filter((e) => {
                return body.filter((v) => v.toString() === e[1].toString()).length > 0;
            })
            .map((e) => e[0]);

        possibleActions = possibleActions.filter((p) => dirLeft.indexOf(p) < 0);

        const rnd = ~~(Math.random() * possibleActions.length);
        return views.find(v => v.direction == possibleActions[rnd]);
    }
});