Why couldn't sprite jump when it touches the ground?

[stone]

 After the gravity is added to sprite, it can jump before it falls to the ground, but it doesn't react to the click after falling to the ground. 

var game = new Phaser.Game(500, 600, Phaser.AUTO, 'game_div');

    var main_state = {


        preload: function() {

            game.load.image('hello', 'assets/hello.png');

        },


        create: function() { 

          this.hello = this.game.add.sprite(20, 20, 'hello');

          this.hello.body.collideWorldBounds = true;

          this.hello.body.gravity.y = 1000;

          this.hello.width = this.hello.height = 50;

          this.input.onDown.add(this.jump, this);

        },


        update: function() {


        },

        jump: function(){

          this.hello.body.velocity.y = -300;

        }

    };


    game.state.add('main', main_state);  

    game.state.start('main');  

[j0hnskot]

Besides that this code does not work, i added what it was missing and tried it. It jumps correctly.

I'm guessing that you didn't give us the exact code or you are using a different edition of phaser.

What edition do you use?

var game = new Phaser.Game(500, 600, Phaser.AUTO, 'game_div');    var main_state = {         preload: function() {            game.load.image('hello', 'assets/hello.png');        },         create: function() {           this.hello = this.game.add.sprite(20, 20, 'hello');          //added this               game.physics.arcade.enable(this.hello);          this.hello.body.collideWorldBounds = true;          this.hello.body.gravity.y = 1000;          this.hello.width = this.hello.height = 50;          this.input.onDown.add(this.jump, this);        },         update: function() {                    },        jump: function(){          this.hello.body.velocity.y = -300;        }    };     game.state.add('main', main_state);      game.state.start('main');  

[stone]

My version of phaser is 1.1.5, which has been changed into 2.0.5 and added with game.physics.arcade.enable(this.hello). And then everything is OK. 

Thank you.