class Game{

    constructor(){
        this.generateGrid();
        this.updateVelocity();
        this.updateDifficulty();
        this.updateVisibilities();
    }

    generateGrid(){
        this.algorithm = null;

        let count = parseInt($('#cell_count').val());
        let movement = $('#movement').val();
        let difficulty = parseInt($('#difficulty').val());
        let hasRandomDirection = $('#direction').is(':checked');

        this.grid = new Grid(localSettings.app.grid, count, difficulty, hasRandomDirection);
        $('#cell_count_text').text(count + 'x' + count + ' nodes');

        //Two main nodes, start and target
        if (hasRandomDirection){
            this.startNode = random(this.grid.allowedNodes);
            this.targetNode = random(this.grid.getAllowedNodesDistantTo(this.startNode)
                .filter(n => {
                    if (movement === '1'){
                        return n.pos.x % 2 === this.startNode.pos.x % 2
                            && n.pos.y % 2 === this.startNode.pos.y % 2;
                    }
                    return true;
                })
            );
        } else {
            this.startNode = this.grid.nodes[0][0];
            this.targetNode = this.grid.nodes[count - 1][count - 1];
        }

        this.updateTester = 0;
    }

    update(){
        if (this.algorithm){
                this.updateTester += this.movesPerSecond / frameRate();
                let i = 0;
                for (; i < floor(this.updateTester); i++){
                    this.algorithm.update();
                }
                this.updateTester -= i;
        } 
    }

    display(){
        this.grid.display(this.appearance, this.linesAreVisible);

        if (this.appearance === 'Circles'){
            let r = 0.5;
            fill(50, 50, 255);
            ellipse(this.startNode.pos.x, this.startNode.pos.y, r * 2);
            fill(50, 255, 50);
            ellipse(this.targetNode.pos.x, this.targetNode.pos.y, r * 2);
        }
        if (this.appearance === 'Rectangles'){
            fill(50, 50, 255);
            rect(this.startNode.pos.x - 0.5, this.startNode.pos.y - 0.5, 1, 1);
            fill(50, 255, 50);
            rect(this.targetNode.pos.x - 0.5, this.targetNode.pos.y - 0.5, 1, 1);
        }
        

        if (this.algorithm)
            this.algorithm.display(this.appearance, this.isInformationVisible, this.pathSmoothness);
    }

    start(algorithm){
        this.algorithm = algorithm;

        let movement = $('#movement').val();
        this.grid.nodes.forEach(x => x.forEach(n => {
            n.setMovement(movement);
            n.connectToSuccessors(this.grid.nodes);
        }));
    }

    updateVelocity(){
        let value = parseInt($('#velocity').val());
        $('#velocity_text').text(value + ' moves per second');
        this.movesPerSecond = value;
    }

    updateDifficulty(){
        let value = parseInt($('#difficulty').val());
        $('#difficulty_text').text('Difficulty: ' + value);
        this.generateGrid();
    }

    updateVisibilities(){
        let appearance = $('input[name=appearance]:checked').val();
        let displayGrid = $('#gridVisibility').is(':checked');
        let displayInformation = $('#information').is(':checked');
        let pathSmoothness = $('#pathSmoothness').is(':checked');

        if (!appearance)
            appearance = $('input[name=appearance]:eq(0)').val();

        this.appearance = appearance;
        this.linesAreVisible = displayGrid;
        this.isInformationVisible = displayInformation;
        this.pathSmoothness = pathSmoothness;
    }

}