Phaser Class: Weapon

new Weapon(game, parent)

The Weapon Plugin provides the ability to easily create a bullet pool and manager.

Weapons fire Phaser.Bullet objects, which are essentially Sprites with a few extra properties. The Bullets are enabled for Arcade Physics. They do not currently work with P2 Physics.

The Bullets are created inside of Weapon.bullets, which is a Phaser.Group instance. Anything you can usually do with a Group, such as move it around the display list, iterate it, etc can be done to the bullets Group too.

Bullets can have textures and even animations. You can control the speed at which they are fired, the firing rate, the firing angle, and even set things like gravity for them.

A small example, assumed to be running from within a Phaser.State create method.

var weapon = this.add.weapon(10, 'bullet'); weapon.fireFrom.set(300, 300); this.input.onDown.add(weapon.fire, this);

Parameters:

Name	Type	Description
`game`	Phaser.Game	A reference to the current Phaser.Game instance.
`parent`	Phaser.PluginManager	The Phaser Plugin Manager which looks after this plugin.

Source - plugins/weapon/WeaponPlugin.js, line 31

Members

<static, constant> KILL_CAMERA_BOUNDS :integer

A bulletKillType constant that automatically kills the bullets when they leave the Camera.bounds rectangle.

Source - plugins/weapon/WeaponPlugin.js, line 409

<static, constant> KILL_DISTANCE :integer

A bulletKillType constant that automatically kills the bullets after they exceed the bulletDistance from their original firing position.

Source - plugins/weapon/WeaponPlugin.js, line 395

<static, constant> KILL_LIFESPAN :integer

A bulletKillType constant that automatically kills the bullets when their bulletLifespan expires.

Source - plugins/weapon/WeaponPlugin.js, line 387

<static, constant> KILL_NEVER :integer

A bulletKillType constant that stops the bullets from ever being destroyed automatically.

Source - plugins/weapon/WeaponPlugin.js, line 380

<static, constant> KILL_STATIC_BOUNDS :integer

A bulletKillType constant that automatically kills the bullets when they leave the Weapon.bounds rectangle.

Source - plugins/weapon/WeaponPlugin.js, line 423

<static, constant> KILL_WEAPON_BOUNDS :integer

A bulletKillType constant that automatically kills the bullets when they leave the Weapon.bounds rectangle.

Source - plugins/weapon/WeaponPlugin.js, line 402

<static, constant> KILL_WORLD_BOUNDS :integer

A bulletKillType constant that automatically kills the bullets when they leave the World.bounds rectangle.

Source - plugins/weapon/WeaponPlugin.js, line 416

autoExpandBulletsGroup :boolean

Should the bullet pool run out of bullets (i.e. they are all in flight) then this boolean controls if the Group will create a brand new bullet object or not.

Source - plugins/weapon/WeaponPlugin.js, line 46

autofire :boolean

Will this weapon auto fire? If set to true then a new bullet will be fired based on the fireRate value.

Source - plugins/weapon/WeaponPlugin.js, line 53

bounds :Phaser.Rectangle

This Rectangle defines the bounds that are used when determining if a Bullet should be killed or not. It's used in combination with Weapon.bulletKillType when that is set to either Phaser.Weapon.KILL_WEAPON_BOUNDS or Phaser.Weapon.KILL_STATIC_BOUNDS. If you are not using either of these kill types then the bounds are ignored. If you are tracking a Sprite or Point then the bounds are centered on that object every frame.

Source - plugins/weapon/WeaponPlugin.js, line 266

bulletAngleOffset :number

An optional angle offset applied to the Bullets when they are launched. This is useful if for example your bullet sprites have been drawn facing up, instead of to the right, and you want to fire them at an angle. In which case you can set the angle offset to be 90 and they'll be properly rotated when fired.

Source - plugins/weapon/WeaponPlugin.js, line 153

bulletAngleVariance :number

This is a variance added to the angle of Bullets when they are fired. If you fire from an angle of 90 and have a bulletAngleVariance of 20 then the actual angle of the Bullets will be between 70 and 110 degrees. This is a quick way to add a great 'spread' effect to a Weapon.

Source - plugins/weapon/WeaponPlugin.js, line 162

bulletAnimation :string

The string based name of the animation that the Bullet will be given on launch. This is set via Weapon.addBulletAnimation.

Source - plugins/weapon/WeaponPlugin.js, line 112

bulletClass :Object

The Class of the bullets that are launched by this Weapon. Defaults Phaser.Bullet, but can be overridden before calling createBullets and set to your own class type.

Source - plugins/weapon/WeaponPlugin.js, line 1070

bulletCollideWorldBounds :boolean

Should bullets collide with the World bounds or not?

Source - plugins/weapon/WeaponPlugin.js, line 1158

bulletFrame :string|integer

The Texture Frame that the Bullets use when rendering. Changing this has no effect on bullets in-flight, only on newly spawned bullets.

Type:

string | integer

Source - plugins/weapon/WeaponPlugin.js, line 221

bulletFrameCycle :boolean

If you've added a set of frames via Weapon.setBulletFrames then you can optionally chose for each Bullet fired to use the next frame in the set. The frame index is then advanced one frame until it reaches the end of the set, then it starts from the start again. Cycling frames like this allows you to create varied bullet effects via sprite sheets.

Source - plugins/weapon/WeaponPlugin.js, line 129

bulletFrameRandom :boolean

If you've added a set of frames via Weapon.setBulletFrames then you can optionally chose for each Bullet fired to pick a random frame from the set.

Source - plugins/weapon/WeaponPlugin.js, line 119

<internal> bulletFrames :Array

This array stores the frames added via Weapon.setBulletFrames.

Internal:

This member is internal (protected) and may be modified or removed in the future.

Source - plugins/weapon/WeaponPlugin.js, line 282

bulletGravity :Phaser.Point

This is the amount of gravity added to the Bullets physics body when fired. Gravity is expressed in pixels / second / second.

Source - plugins/weapon/WeaponPlugin.js, line 199

bulletInheritSpriteSpeed :boolean

When a Bullet is fired it can optionally inherit the velocity of the trackedSprite if set.

Source - plugins/weapon/WeaponPlugin.js, line 105

bulletKey :string

The Texture Key that the Bullets use when rendering. Changing this has no effect on bullets in-flight, only on newly spawned bullets.

Source - plugins/weapon/WeaponPlugin.js, line 214

bulletKillDistance :number

If you've set bulletKillType to Phaser.Weapon.KILL_DISTANCE this controls the distance the Bullet can travel before it is automatically killed. The distance is given in pixels.

Source - plugins/weapon/WeaponPlugin.js, line 192

bulletKillType :integer

This controls how the bullets will be killed. The default is Phaser.Weapon.KILL_WORLD_BOUNDS.

There are 7 different "kill types" available:

Phaser.Weapon.KILL_NEVER The bullets are never destroyed by the Weapon. It's up to you to destroy them via your own code.
Phaser.Weapon.KILL_LIFESPAN The bullets are automatically killed when their bulletLifespan amount expires.
Phaser.Weapon.KILL_DISTANCE The bullets are automatically killed when they exceed bulletDistance pixels away from their original launch position.
Phaser.Weapon.KILL_WEAPON_BOUNDS The bullets are automatically killed when they no longer intersect with the Weapon.bounds rectangle.
Phaser.Weapon.KILL_CAMERA_BOUNDS The bullets are automatically killed when they no longer intersect with the Camera.bounds rectangle.
Phaser.Weapon.KILL_WORLD_BOUNDS The bullets are automatically killed when they no longer intersect with the World.bounds rectangle.
Phaser.Weapon.KILL_STATIC_BOUNDS The bullets are automatically killed when they no longer intersect with the Weapon.bounds rectangle. The difference between static bounds and weapon bounds, is that a static bounds will never be adjusted to match the position of a tracked sprite or pointer.

Source - plugins/weapon/WeaponPlugin.js, line 1095

bulletLifespan :number

If you've set bulletKillType to Phaser.Weapon.KILL_LIFESPAN this controls the amount of lifespan the Bullets have set on launch. The value is given in milliseconds. When a Bullet hits its lifespan limit it will be automatically killed.

Source - plugins/weapon/WeaponPlugin.js, line 185

bulletRotateToVelocity :boolean

Bullets can optionally adjust their rotation in-flight to match their velocity. This can create the effect of a bullet 'pointing' to the path it is following, for example an arrow being fired from a bow, and works especially well when added to bulletGravity.

Source - plugins/weapon/WeaponPlugin.js, line 207

bullets :Phaser.Group

This is the Phaser.Group that contains all of the bullets managed by this plugin.

Source - plugins/weapon/WeaponPlugin.js, line 39

bulletSpeed :number

The speed at which the bullets are fired. This value is given in pixels per second, and is used to set the starting velocity of the bullets.

Source - plugins/weapon/WeaponPlugin.js, line 169

bulletSpeedVariance :number

This is a variance added to the speed of Bullets when they are fired. If bullets have a bulletSpeed value of 200, and a bulletSpeedVariance of 50 then the actual speed of the Bullets will be between 150 and 250 pixels per second.

Source - plugins/weapon/WeaponPlugin.js, line 177

bulletWorldWrap :boolean

Should the Bullets wrap around the world bounds? This automatically calls World.wrap on the Bullet each frame. See the docs for that method for details.

Source - plugins/weapon/WeaponPlugin.js, line 136

bulletWorldWrapPadding :integer

If bulletWorldWrap is true then you can provide an optional padding value with this property. It's added to the calculations determining when the Bullet should wrap around the world or not. The value is given in pixels.

Source - plugins/weapon/WeaponPlugin.js, line 144

fireAngle :integer

The angle at which the bullets are fired. This can be a const such as Phaser.ANGLE_UP or it can be any number from 0 to 360 inclusive, where 0 degrees is to the right.

Source - plugins/weapon/WeaponPlugin.js, line 99

fireFrom :Phaser.Rectangle

This is a Rectangle from within which the bullets are fired. By default it's a 1x1 rectangle, the equivalent of a Point. But you can change the width and height, and if larger than 1x1 it'll pick a random point within the rectangle to launch the bullet from.

Source - plugins/weapon/WeaponPlugin.js, line 92

fireLimit :number

The maximum number of shots that this Weapon is allowed to fire before it stops. When the limit is his the Weapon.onFireLimit Signal is dispatched. You can reset the shot counter via Weapon.resetShots.

Source - plugins/weapon/WeaponPlugin.js, line 69

fireRate :number

The rate at which this Weapon can fire. The value is given in milliseconds.

Source - plugins/weapon/WeaponPlugin.js, line 75

fireRateVariance :number

This is a modifier that is added to the fireRate each update to add variety to the firing rate of the Weapon. The value is given in milliseconds. If you've a fireRate of 200 and a fireRateVariance of 50 then the actual firing rate of the Weapon will be between 150 and 250.

Source - plugins/weapon/WeaponPlugin.js, line 84

onFire :Phaser.Signal

The onFire Signal is dispatched each time Weapon.fire is called, and a Bullet is successfully launched. The callback is set two arguments: a reference to the Weapon that fired the bullet, and a reference to the bullet sprite itself.

Source - plugins/weapon/WeaponPlugin.js, line 306

onFireLimit :Phaser.Signal

The onFireLimit Signal is dispatched if Weapon.fireLimit is > 0, and a bullet launch takes the number of shots fired to equal the fire limit. The callback is sent two arguments: A reference to the Weapon that hit the limit, and the value of Weapon.fireLimit.

Source - plugins/weapon/WeaponPlugin.js, line 325

onKill :Phaser.Signal

The onKill Signal is dispatched each time a Bullet that is in-flight is killed. This can be the result of leaving the Weapon bounds, an expiring lifespan, or exceeding a specified distance. The callback is sent one argument: A reference to the bullet sprite itself.

Source - plugins/weapon/WeaponPlugin.js, line 315

shots :number

The total number of bullets this Weapon has fired so far. You can limit the number of shots allowed (via fireLimit), and reset this total via Weapon.resetShots.

Source - plugins/weapon/WeaponPlugin.js, line 61

trackedPointer :Phaser.Pointer

The Pointer currently being tracked by the Weapon, if any. This is set via the Weapon.trackPointer method.

Source - plugins/weapon/WeaponPlugin.js, line 341

trackedSprite :Phaser.Sprite|Object

The Sprite currently being tracked by the Weapon, if any. This is set via the Weapon.trackSprite method.

Type:

Phaser.Sprite | Object

Source - plugins/weapon/WeaponPlugin.js, line 333

trackOffset :Phaser.Point

The Track Offset is a Point object that allows you to specify a pixel offset that bullets use when launching from a tracked Sprite or Pointer. For example if you've got a bullet that is 2x2 pixels in size, but you're tracking a Sprite that is 32x32, then you can set trackOffset.x = 16 to have the bullet launched from the center of the Sprite.

Source - plugins/weapon/WeaponPlugin.js, line 360

trackRotation :boolean

If the Weapon is tracking a Sprite, should it also track the Sprites rotation? This is useful for a game such as Asteroids, where you want the weapon to fire based on the sprites rotation.

Source - plugins/weapon/WeaponPlugin.js, line 350

x :number

The x coordinate from which bullets are fired. This is the same as Weapon.fireFrom.x, and can be overridden by the Weapon.fire arguments.

Source - plugins/weapon/WeaponPlugin.js, line 1183

y :number

The y coordinate from which bullets are fired. This is the same as Weapon.fireFrom.y, and can be overridden by the Weapon.fire arguments.

Source - plugins/weapon/WeaponPlugin.js, line 1205

Methods

addBulletAnimation(name, frames, frameRate, loop, useNumericIndex) → {Phaser.Weapon}

Adds a new animation under the given key. Optionally set the frames, frame rate and loop. The arguments are all the same as for Animation.add, and work in the same way.

Weapon.bulletAnimation will be set to this animation after it's created. From that point on, all bullets fired will play using this animation. You can swap between animations by calling this method several times, and then just changing the Weapon.bulletAnimation property to the name of the animation you wish to play for the next launched bullet.

If you wish to stop using animations at all, set Weapon.bulletAnimation to '' (an empty string).

Parameters:

Name	Type	Argument	Default	Description
`name`	string			The unique (within the Weapon instance) name for the animation, i.e. "fire", "blast".
`frames`	Array	<optional>	null	An array of numbers/strings that correspond to the frames to add to this animation and in which order. e.g. [1, 2, 3] or ['run0', 'run1', run2]). If null then all frames will be used.
`frameRate`	number	<optional>	60	The speed at which the animation should play. The speed is given in frames per second.
`loop`	boolean	<optional>	false	Whether or not the animation is looped or just plays once.
`useNumericIndex`	boolean	<optional>	true	Are the given frames using numeric indexes (default) or strings?

Returns:

Phaser.Weapon -

The Weapon Plugin.

Source - plugins/weapon/WeaponPlugin.js, line 1007

createBullets(quantity, key, frame, group) → {Phaser.Weapon}

This method performs two actions: First it will check to see if the Weapon.bullets Group exists or not, and if not it creates it, adding it the group given as the 4th argument.

Then it will seed the bullet pool with the quantity number of Bullets, using the texture key and frame provided (if any).

If for example you set the quantity to be 10, then this Weapon will only ever be able to have 10 bullets in-flight simultaneously. If you try to fire an 11th bullet then nothing will happen until one, or more, of the in-flight bullets have been killed, freeing them up for use by the Weapon again.

If you do not wish to have a limit set, then pass in -1 as the quantity. In this instance the Weapon will keep increasing the size of the bullet pool as needed. It will never reduce the size of the pool however, so be careful it doesn't grow too large.

You can either set the texture key and frame here, or via the Weapon.bulletKey and Weapon.bulletFrame properties. You can also animate bullets, or set them to use random frames. All Bullets belonging to a single Weapon instance must share the same texture key however.

Parameters:

Name	Type	Argument	Default	Description
`quantity`	integer	<optional>	1	The quantity of bullets to seed the Weapon with. If -1 it will set the pool to automatically expand.
`key`	string	<optional>		The Game.cache key of the image that this Sprite will use.
`frame`	integer \| string	<optional>		If the Sprite image contains multiple frames you can specify which one to use here.
`group`	Phaser.Group	<optional>		Optional Group to add the object to. If not specified it will be added to the World group.

Returns:

Phaser.Weapon -

This Weapon instance.

Source - plugins/weapon/WeaponPlugin.js, line 425

debug(x, y, debugBodies)

Uses Game.Debug to draw some useful information about this Weapon, including the number of bullets both in-flight, and available. And optionally the physics debug bodies of the bullets.

Parameters:

Name	Type	Argument	Default	Description
`x`	integer	<optional>	16	The coordinate, in screen space, at which to draw the Weapon debug data.
`y`	integer	<optional>	32	The coordinate, in screen space, at which to draw the Weapon debug data.
`debugBodies`	boolean	<optional>	false	Optionally draw the physics body of every bullet in-flight.

Source - plugins/weapon/WeaponPlugin.js, line 1045

destroy()

Destroys this Weapon. It removes itself from the PluginManager, destroys the bullets Group, and nulls internal references.

Source - plugins/weapon/WeaponPlugin.js, line 571

fire(from, x, y) → {boolean}

Attempts to fire a single Bullet. If there are no more bullets available in the pool, and the pool cannot be extended, then this method returns false. It will also return false if not enough time has expired since the last time the Weapon was fired, as defined in the Weapon.fireRate property.

Otherwise the first available bullet is selected and launched.

The arguments are all optional, but allow you to control both where the bullet is launched from, and aimed at.

If you don't provide any of the arguments then it uses those set via properties such as Weapon.trackedSprite, Weapon.bulletAngle and so on.

When the bullet is launched it has its texture and frame updated, as required. The velocity of the bullet is calculated based on Weapon properties like bulletSpeed.

Parameters:

Name	Type	Argument	Description
`from`	Phaser.Sprite \| Phaser.Point \| Object	<optional>	Optionally fires the bullet from the `x` and `y` properties of this object. If set this overrides `Weapon.trackedSprite` or `trackedPointer`. Pass `null` to ignore it.
`x`	number	<optional>	The x coordinate, in world space, to fire the bullet towards. If left as `undefined` the bullet direction is based on its angle.
`y`	number	<optional>	The y coordinate, in world space, to fire the bullet towards. If left as `undefined` the bullet direction is based on its angle.

Returns:

boolean -

True if a bullet was successfully fired, otherwise false.

Source - plugins/weapon/WeaponPlugin.js, line 683

fireAtPointer(pointer) → {boolean}

Fires a bullet at the given Pointer. The bullet will be launched from the Weapon.fireFrom position, or from a Tracked Sprite or Pointer, if you have one set.

Parameters:

Name	Type	Argument	Description
`pointer`	Phaser.Pointer	<optional>	The Pointer to fire the bullet towards.

Returns:

boolean -

True if a bullet was successfully fired, otherwise false.

Source - plugins/weapon/WeaponPlugin.js, line 887

fireAtSprite(sprite) → {boolean}

Fires a bullet at the given Sprite. The bullet will be launched from the Weapon.fireFrom position, or from a Tracked Sprite or Pointer, if you have one set.

Parameters:

Name	Type	Argument	Description
`sprite`	Phaser.Sprite	<optional>	The Sprite to fire the bullet towards.

Returns:

boolean -

True if a bullet was successfully fired, otherwise false.

Source - plugins/weapon/WeaponPlugin.js, line 903

fireAtXY(x, y) → {boolean}

Fires a bullet at the given coordinates. The bullet will be launched from the Weapon.fireFrom position, or from a Tracked Sprite or Pointer, if you have one set.

Parameters:

Name	Type	Argument	Description
`x`	number	<optional>	The x coordinate, in world space, to fire the bullet towards.
`y`	number	<optional>	The y coordinate, in world space, to fire the bullet towards.

Returns:

boolean -

True if a bullet was successfully fired, otherwise false.

Source - plugins/weapon/WeaponPlugin.js, line 917

forEach(callback, callbackContext, args) → {Phaser.Weapon}

Call a function on each in-flight bullet in this Weapon.

See forEachExists for more details.

Parameters:

Name	Type	Argument	Default	Description
`callback`	function			The function that will be called for each applicable child. The child will be passed as the first argument.
`callbackContext`	object			The context in which the function should be called (usually 'this').
`args`	any	<optional> <repeatable>	(none)	Additional arguments to pass to the callback function, after the child item.

Returns:

Phaser.Weapon -

This Weapon instance.

Source - plugins/weapon/WeaponPlugin.js, line 482

killAll() → {Phaser.Weapon}

Calls Bullet.kill on every in-flight bullet in this Weapon. Also re-enables their physics bodies, should they have been disabled via pauseAll.

Returns:

Phaser.Weapon -

This Weapon instance.

Source - plugins/weapon/WeaponPlugin.js, line 533

pauseAll() → {Phaser.Weapon}

Sets Body.enable to false on each bullet in this Weapon. This has the effect of stopping them in-flight should they be moving. It also stops them being able to be checked for collision.

Returns:

Phaser.Weapon -

This Weapon instance.

Source - plugins/weapon/WeaponPlugin.js, line 501

resetShots(newLimit) → {Phaser.Weapon}

Resets the Weapon.shots counter back to zero. This is used when you've set Weapon.fireLimit, and have hit (or just wish to reset) your limit.

Parameters:

Name	Type	Argument	Description
`newLimit`	integer	<optional>	Optionally set a new `Weapon.fireLimit`.

Returns:

Phaser.Weapon -

This Weapon instance.

Source - plugins/weapon/WeaponPlugin.js, line 550

resumeAll() → {Phaser.Weapon}

Sets Body.enable to true on each bullet in this Weapon. This has the effect of resuming their motion should they be in-flight. It also enables them for collision checks again.

Returns:

Phaser.Weapon -

This Weapon instance.

Source - plugins/weapon/WeaponPlugin.js, line 517

setBulletBodyOffset(width, height, offsetX, offsetY) → {Phaser.Weapon}

You can modify the size of the physics Body the Bullets use to be any dimension you need. This allows you to make it smaller, or larger, than the parent Sprite. You can also control the x and y offset of the Body. This is the position of the Body relative to the top-left of the Sprite texture.

For example: If you have a Sprite with a texture that is 80x100 in size, and you want the physics body to be 32x32 pixels in the middle of the texture, you would do:

setSize(32, 32, 24, 34)

Where the first two parameters is the new Body size (32x32 pixels). 24 is the horizontal offset of the Body from the top-left of the Sprites texture, and 34 is the vertical offset.

Parameters:

Name	Type	Argument	Description
`width`	number		The width of the Body.
`height`	number		The height of the Body.
`offsetX`	number	<optional>	The X offset of the Body from the top-left of the Sprites texture.
`offsetY`	number	<optional>	The Y offset of the Body from the top-left of the Sprites texture.

Returns:

Phaser.Weapon -

The Weapon Plugin.

Source - plugins/weapon/WeaponPlugin.js, line 932

setBulletFrames(min, max, cycle, random) → {Phaser.Weapon}

Sets the texture frames that the bullets can use when being launched.

This is intended for use when you've got numeric based frames, such as those loaded via a Sprite Sheet.

It works by calling Phaser.ArrayUtils.numberArray internally, using the min and max values provided. Then it sets the frame index to be zero.

You can optionally set the cycle and random booleans, to allow bullets to cycle through the frames when they're fired, or pick one at random.

Parameters:

Name	Type	Argument	Default	Description
`min`	integer			The minimum value the frame can be. Usually zero.
`max`	integer			The maximum value the frame can be.
`cycle`	boolean	<optional>	true	Should the bullet frames cycle as they are fired?
`random`	boolean	<optional>	false	Should the bullet frames be picked at random as they are fired?

Returns:

Phaser.Weapon -

The Weapon Plugin.

Source - plugins/weapon/WeaponPlugin.js, line 973

trackPointer(pointer, offsetX, offsetY) → {Phaser.Weapon}

Sets this Weapon to track the given Pointer. When a Weapon tracks a Pointer it will automatically update its fireFrom value to match the Pointers position within the Game World, adjusting the coordinates based on the offset arguments.

This allows you to lock a Weapon to a Pointer, so that bullets are always launched from its location.

Calling trackPointer will reset Weapon.trackedSprite to null, should it have been set, as you can only track either a Pointer, or a Sprite, at once, but not both.

Parameters:

Name	Type	Argument	Default	Description
`pointer`	Phaser.Pointer	<optional>		The Pointer to track the position of. Defaults to `Input.activePointer` if not specified.
`offsetX`	integer	<optional>	0	The horizontal offset from the Pointers position to be applied to the Weapon.
`offsetY`	integer	<optional>	0	The vertical offset from the Pointers position to be applied to the Weapon.

Returns:

Phaser.Weapon -

This Weapon instance.

Source - plugins/weapon/WeaponPlugin.js, line 651

trackSprite(sprite, offsetX, offsetY, trackRotation) → {Phaser.Weapon}

Sets this Weapon to track the given Sprite, or any Object with a public world Point object. When a Weapon tracks a Sprite it will automatically update its fireFrom value to match the Sprites position within the Game World, adjusting the coordinates based on the offset arguments.

This allows you to lock a Weapon to a Sprite, so that bullets are always launched from its location.

Calling trackSprite will reset Weapon.trackedPointer to null, should it have been set, as you can only track either a Sprite, or a Pointer, at once, but not both.

Parameters:

Name	Type	Argument	Default	Description
`sprite`	Phaser.Sprite \| Object			The Sprite to track the position of.
`offsetX`	integer	<optional>	0	The horizontal offset from the Sprites position to be applied to the Weapon.
`offsetY`	integer	<optional>	0	The vertical offset from the Sprites position to be applied to the Weapon.
`trackRotation`	boolean	<optional>	false	Should the Weapon also track the Sprites rotation?

Returns:

Phaser.Weapon -

This Weapon instance.

Source - plugins/weapon/WeaponPlugin.js, line 618

<internal> update()

Internal update method, called by the PluginManager.

Internal:

This member is internal (protected) and may be modified or removed in the future.

Source - plugins/weapon/WeaponPlugin.js, line 590