Как переместить массив объектов на одинаковое расстояние в Phaser 3? - PullRequest
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Как переместить массив объектов на одинаковое расстояние в Phaser 3?

1 голос
/ 06 ноября 2019

У меня есть игра в Phaser. Когда стрелка в игре запускается, она помещается в массив. Стрелка попадает в цель, и цель движется назад до того, как будет выпущена следующая стрелка. Если это не имеет смысла, стрелки, которые уже прилипли к цели, должны перемещаться вместе с целью при ее перемещении.

Я попытался просто переместить значение x массива и попытался перебрать массив,Я также попытался просто переместить переменную this.arrows.

Код 

function update ()
{   
    //Declare constants for movement
    const arrowMoveAmt = 1500;
    this.player.setDrag(2000);

    //Rotation of the player
    if (this.cursors.up.isDown && this.player.angle > -45) {
        this.player.angle -= angleModifier;}

    if (this.cursors.down.isDown && this.player.angle < 0) {
        this.player.angle += angleModifier;}

    //Shooting with the spacebar
    if (Phaser.Input.Keyboard.JustDown(this.spacebar)) {

        //Animate the shooting
        this.player.anims.play('shoot', true);

        //Arrow shooting
        let arrow = this.physics.add.sprite(this.player.x, (this.player.y + 20), 'arrow');

        //Make sure the arrow has a hitbox
        arrow.enableBody = true;
        //Let the arrow move
        arrow.body.immovable = false;
        //Edit arrow hitbox 
        arrow.setSize(50, 15).setOffset(5, 50);

        arrow.setGravityY(3600); //Gravity will affect the arrows
        //Arrow speeds
        arrow.setVelocityX(arrowMoveAmt);
        arrow.setVelocityY((this.player.angle * 50));

        this.arrows.push(arrow); //Add arrow to the array created earlier

        this.arrowSound.play(); //Play the sound

        //Reset the angle modifier for added difficulty
        angleModifier = (Math.random() + .1) * 2;
    }

    else if(target.body.touching.left) {

        //Variable for loop
        let i = 0;

        //Set initial position of new medals
        let firstMedalX = 180;

        //Loop to create multiple arrows
        while (i < this.arrows.length) {
            newArrows = this.arrows[i];
            newArrows.setGravityY(0);
            newArrows.setVelocityX(0);
            newArrows.setVelocityY(0);

            //Add 30 to the new medal's x position
            firstMedalX += 40;

            //Increment for every arrow shot
            i++;

            //Reset the player angle for difficulty
            this.player.angle = 0;

            //Move the target
            var x = target.x;
            target.x += 10;
            var x2 = target.x;
            var arrowMove = x2 - x;
            newArrows.x = newArrows.x + arrowMove;

            console.log("Target X = " + target.x);
            console.log("Arrows X = " + newArrows.x);

        }

        //Call the function to determine medal and pass the variable
        if(this.arrows.length <= 5) {
            //Only track the first five arrows
            getMedal(firstMedalX);
        }
    }

    //Function to decide medal, and where it goes
    getMedal = (value) => {
        //Gold medal
        if (410 < newArrows.y && newArrows.y < 435) {
            this.add.image(value, 175, 'gold_medal');
            score += 5;
        }
        //Silver medal
        else if (395 < newArrows.y && newArrows.y < 450) {
            this.add.image(value, 175, 'silver_medal');
            score += 3;
        }
        //Bronze medal
        else if (380 < newArrows.y && newArrows.y < 460) {
            this.add.image(value, 175, 'bronze_medal');
            score += 1;
        }
        else {
            this.add.image(value, 175, 'no_medal');
        }
        //Set the scoreboard to the new score
        scoreBoard.setText('SCORE: ' + score);
    }
}

1 Ответ

1 голос
/ 07 ноября 2019

Я нашел решение:

  • Сначала , удалите следующий блок кода из цикла while. 
//Move the target
var x = target.x;
target.x += 10;
var x2 = target.x;
var arrowMove = x2 - x;
newArrows.x = newArrows.x + arrowMove;

console.log("Target X = " + target.x);
console.log("Arrows X = " + newArrows.x);
  • Второй , добавьте эту строку newArrows.x += 10; в цикле while после this.player.angle = 0 line.
  • Третий , сразу после закрывающей скобки цикла while, добавьте этот код: 
//Move the target
target.x += 10;

Для справки: полный фрагмент кода метода update(): 

function update ()
{   
    //Declare constants for movement
    const arrowMoveAmt = 1500;
    this.player.setDrag(2000);

    //Rotation of the player
    if (this.cursors.up.isDown && this.player.angle > -45) {
        this.player.angle -= angleModifier;}

    if (this.cursors.down.isDown && this.player.angle < 0) {
        this.player.angle += angleModifier;}

    //Shooting with the spacebar
    if (Phaser.Input.Keyboard.JustDown(this.spacebar)) {

        //Animate the shooting
        this.player.anims.play('shoot', true);

        //Arrow shooting
        let arrow = this.physics.add.sprite(this.player.x, (this.player.y + 20), 'arrow');

        //Make sure the arrow has a hitbox
        arrow.enableBody = true;
        //Let the arrow move
        arrow.body.immovable = false;
        //Edit arrow hitbox 
        arrow.setSize(50, 15).setOffset(5, 50);

        arrow.setGravityY(3600); //Gravity will affect the arrows
        //Arrow speeds
        arrow.setVelocityX(arrowMoveAmt);
        arrow.setVelocityY((this.player.angle * 50));

        this.arrows.push(arrow); //Add arrow to the array created earlier

        this.arrowSound.play(); //Play the sound

        //Reset the angle modifier for added difficulty
        angleModifier = (Math.random() + .1) * 2;
    }

    else if(target.body.touching.left) {

        //Variable for loop
        let i = 0;

        //Set initial position of new medals
        let firstMedalX = 180;

        //Loop to create multiple arrows
        while (i < this.arrows.length) {
            newArrows = this.arrows[i];
            newArrows.setGravityY(0);
            newArrows.setVelocityX(0);
            newArrows.setVelocityY(0);

            //Add 30 to the new medal's x position
            firstMedalX += 40;

            //Increment for every arrow shot
            i++;

            //Reset the player angle for difficulty
            this.player.angle = 0;

            // Move the arrows
            newArrows.x += 10

        }

        //Move the target
        target.x += 10;

        //Call the function to determine medal and pass the variable
        if(this.arrows.length <= 5) {
            //Only track the first five arrows
            getMedal(firstMedalX);
        }
    }

    //Function to decide medal, and where it goes
    getMedal = (value) => {
        //Gold medal
        if (410 < newArrows.y && newArrows.y < 435) {
            this.add.image(value, 175, 'gold_medal');
            score += 5;
        }
        //Silver medal
        else if (395 < newArrows.y && newArrows.y < 450) {
            this.add.image(value, 175, 'silver_medal');
            score += 3;
        }
        //Bronze medal
        else if (380 < newArrows.y && newArrows.y < 460) {
            this.add.image(value, 175, 'bronze_medal');
            score += 1;
        }
        else {
            this.add.image(value, 175, 'no_medal');
        }
        //Set the scoreboard to the new score
        scoreBoard.setText('SCORE: ' + score);
    }
}
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