Timer problem - calling external objects method [SOLVED]

[pinkpanther]

Hello,

 

what's wrong with this code:

 

this.player = new Player(game.system.width / 2, game.system.height - this.ground.height);
              this.enemyRow = new EnemyGroup();
              console.log(this.player);
              console.log(this.enemyRow);
              
              this.addTimer(5000, function() {
                  this.enemyRow.fallDown();
              }, true);

 

 

That gives me TypeError (this.enemyRow.fallDown: undefined)

 

Regards!

 

[powerman23rus]

Hey. Can you give me the source code of the object EnemyGroup?

[pinkpanther]

Ok, i passed timer issue, but still got the problem with references on line

 

                  e = this.enemies[r];

 

in fallDown method.

Still TypeError: undefined. I Suppose, this is due to binding in scene:

 

 this.addTimer(5000, this.enemyRow.fallDown.bind(this), true);

 

where enemyRow is EnemyGroup class object.

 

Important code goes here:

 

 EnemyGroup = game.Class.extend({
          // enemies : [null, null, null, null, null, null, null],
          
          acceleration : 0,
          speed : 7,
          number : enemyRows * enemyCols,
          
          init : function() {
              
              var r, i;
              this.enemies = new Array();
              // Choose start direction
              if (Math.random() > 0.5) {
                  this.acceleration = 1;
              }
              else {
                  this.acceleration = -1;
              }
              // init row of enemies
              for (r = 0; r <= enemyCols - 1; r++) {
                  this.enemies.push(new Enemy(parseInt(game.system.width / 7 + r * game.system.width * 0.15),
                      parseInt(game.system.height * 0.05), this));
                  // this.enemies[r].acceleration = this.acceleration;
                  this.enemies[r].body.velocity.x *= this.acceleration;
              }
              
              console.log(this.enemies);
              // init falling
              
              game.scene.addObject(this);
          },

 

fallDown : function() {
              var r, i;
              console.log(this.enemies);
              
              for (r = 0; r <= enemyCols - 1; r++) {
                  e = this.enemies[r];
                  if (e == null) continue;
                  if (this.enemies[r] != null) {
                      var e = this.enemies[r];
                      e.startfall();
                  }
                  
              };
          },