How to make old device detection in Phaser 2

Phaser 2 / CE
1

I’m working on a mobile platformer and I would like it to be compatible with older devices like Samsung Galaxy NeoGT or Samsung Galaxy S2.

Problem:
The character moves with a virtual joystick at an average speed of 90x but this speed is not enough with the average 23fps offered by the test device and the character moves too slowly.

Objetive:
Multiply the speed of the player by the value of the oldDeviceValue variable, which will be 1 for a modern device (56-60fps) or 2 for an old device (18-45fps), as follows:

function detectOldDevice() {
return /* anything for make old device detection (must be 1 or 2) */
}

•••

movePlayer: function () {

var oldDeviceValue = detectOldDevice();

// for example:
if (cursors.left) {
this.player.speed.x = ( this.joystick.speed.xoldDeviceValue)-1;
}
}

The equation would be:

VelXPlayer = [VelXJoystick * (oldDeviceValueResult)] * -1

2

First I would make sure you’re using the game loop delta.

3

If you turn on advanced timing then you can read fps.

4

REALLY helpful, Thanks! : )