Interception

Introduction

Predict the intersection position of two game objects with constant moving speed.

  • Author: Rex
  • Behavior of game object

Usage

Sample code

Install plugin

Load minify file

  • Load plugin (minify file) in preload stage
    scene.load.plugin('rexinterceptionplugin', 'https://raw.githubusercontent.com/rexrainbow/phaser3-rex-notes/master/dist/rexinterceptionplugin.min.js', true);
    
  • Add interception behavior
    var interception = scene.plugins.get('rexinterceptionplugin').add(gameObject, config);
    

Import plugin

  • Install rex plugins from npm
    npm i phaser3-rex-plugins
    
  • Install plugin in configuration of game
    import InterceptionPlugin from 'phaser3-rex-plugins/plugins/interception-plugin.js';
    var config = {
        // ...
        plugins: {
            global: [{
                key: 'rexInterception',
                plugin: InterceptionPlugin,
                start: true
            },
            // ...
            ]
        }
        // ...
    };
    var game = new Phaser.Game(config);
    
  • Add interception behavior
    var interception = scene.plugins.get('rexInterception').add(gameObject, config);
    

Import class

  • Install rex plugins from npm
    npm i phaser3-rex-plugins
    
  • Import class
    import Interception from 'phaser3-rex-plugins/plugins/interception.js';
    
  • Add interception behavior
    var interception = new Interception(gameObject, config);
    

Create instance

var interception = scene.plugins.get('rexInterception').add(gameObject, {
    // target: undefined,
    // enable: true
});
  • target : Game object.
  • enable : Set true to enable predicting.

Target

  • Set
    interception.setTarget(gameObject);
    
    or
    interception.target = gameObject;
    
  • Disalbe
    interception.setTarget(undefined);
    
    or
    interception.target = undefined;
    
  • Get
    var target = interception.target;
    

Enable predicting

  • Enable
    interception.setEnable();
    
  • Disable, uses target position as predicted position
    interception.setEnable(false);
    

Predicted result

  • Predicted position
    var position = interception.predictedPosition; // {x, y}
    
  • Angle to predicted position
    var rotation = interception.predictedAngle; // Angle in radian