Cannot read property add of undefined Phaser

[error404]

I am making a 2d shooter game and i am trying to add a collider between the bullets and the enemy so that the bullet doesn't go straight through the enemy but i am getting an error I am new to phaser btw

here is the code for my projectile class. The class is instantiated whenever the player clicks

 

class Projectile {

    constructor(scene, x, y) {

 

        this.scene = scene;

        this.game = scene.game

        this.x = x;

        this.y = y;

        this.projectile_sprite

            = scene.physics.add.sprite(x, y, 'bullet')

        this.projectile_sprite.setScale(0.02);

 

        let yCur = this.game.input.mousePointer.y;

        let xCur = this.game.input.mousePointer.x;

        

       

        let rad = Phaser.Math.Angle.Between(this.x,this.y,xCur,yCur);

        this.scene.physics.moveTo(this.projectile_sprite,xCur,yCur,1000)

        

        function bulletCollide(projectile){

            projectile.destroy();

 

        }

        

        this.physics.add.collider(player.player_sprite,this.projectile_sprite,bulletCollide(this.projectile_sprite));   

    

        

    

    

}

}