Revisions to Create extra bullets, offset according to angle of spaceship? [duplicate]

broken images fixed (click 'rendered output' to see the difference); for more info, see https://gist.github.com/Glorfindel83/9d954d34385d2ac2597bbe864466259f

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edit approved Feb 10, 2019 at 10:51

Glorfindel

992
1
9
16

I am trying to create a weapons upgrade for my Spaceship, using libGosu and Chingu (in Ruby). This question is about how to deal with this issue specifically in Ruby, and more specifically in libGosu.

In the player class I have tried several variations of the following:

def fire
  Bullet.create(:x => @x, :y => @y, :angle => @angle)
  Bullet.create(:x => @x + Gosu::offset_x(90, 25), :y => @y + Gosu::offset_y(@angle, 0), :angle => @angle)
end

It sort of works, but not exactly how it ideally should. For reference, this is what the Bullet class looks like:

class Bullet < Chingu::GameObject
  def initialize(options)
    super(options.merge(:image => Gosu::Image["assets/laser.png"]))
    @speed = 7
    self.velocity_x = Gosu::offset_x(@angle, @speed)
    self.velocity_y = Gosu::offset_y(@angle, @speed)
  end

  def update
    @y += self.velocity_y
    @x += self.velocity_x
  end
end

How should I construct "def fire" in order to get the extra bullets to align properly when the spaceship rotates?

good http://i44.tinypic.com/2rym68h.png good

In the first image (above) the bullets are separated as intended.

bad http://i40.tinypic.com/23hkbc1.png bad

In the second image the bullets are clumping together when the spaceship is rotated.

I am trying to create a weapons upgrade for my Spaceship, using libGosu and Chingu (in Ruby). This question is about how to deal with this issue specifically in Ruby, and more specifically in libGosu.

In the player class I have tried several variations of the following:

def fire
  Bullet.create(:x => @x, :y => @y, :angle => @angle)
  Bullet.create(:x => @x + Gosu::offset_x(90, 25), :y => @y + Gosu::offset_y(@angle, 0), :angle => @angle)
end

It sort of works, but not exactly how it ideally should. For reference, this is what the Bullet class looks like:

class Bullet < Chingu::GameObject
  def initialize(options)
    super(options.merge(:image => Gosu::Image["assets/laser.png"]))
    @speed = 7
    self.velocity_x = Gosu::offset_x(@angle, @speed)
    self.velocity_y = Gosu::offset_y(@angle, @speed)
  end

  def update
    @y += self.velocity_y
    @x += self.velocity_x
  end
end

How should I construct "def fire" in order to get the extra bullets to align properly when the spaceship rotates?

good http://i44.tinypic.com/2rym68h.png

In the first image (above) the bullets are separated as intended.

bad http://i40.tinypic.com/23hkbc1.png

In the second image the bullets are clumping together when the spaceship is rotated.

I am trying to create a weapons upgrade for my Spaceship, using libGosu and Chingu (in Ruby). This question is about how to deal with this issue specifically in Ruby, and more specifically in libGosu.

In the player class I have tried several variations of the following:

def fire
  Bullet.create(:x => @x, :y => @y, :angle => @angle)
  Bullet.create(:x => @x + Gosu::offset_x(90, 25), :y => @y + Gosu::offset_y(@angle, 0), :angle => @angle)
end

It sort of works, but not exactly how it ideally should. For reference, this is what the Bullet class looks like:

class Bullet < Chingu::GameObject
  def initialize(options)
    super(options.merge(:image => Gosu::Image["assets/laser.png"]))
    @speed = 7
    self.velocity_x = Gosu::offset_x(@angle, @speed)
    self.velocity_y = Gosu::offset_y(@angle, @speed)
  end

  def update
    @y += self.velocity_y
    @x += self.velocity_x
  end
end

How should I construct "def fire" in order to get the extra bullets to align properly when the spaceship rotates?

good

In the first image (above) the bullets are separated as intended.

bad

In the second image the bullets are clumping together when the spaceship is rotated.

explained why this question is distinct from other similar question

Source Link

edited Sep 5, 2013 at 23:59

eagleDog

53
6

I am trying to create a weapons upgrade for my Spaceship, using libGosu and Chingu (in Ruby). This question is about how to deal with this issue specifically in Ruby, and more specifically in libGosu.

In the player class I have tried several variations of the following:

def fire
  Bullet.create(:x => @x, :y => @y, :angle => @angle)
  Bullet.create(:x => @x + Gosu::offset_x(90, 25), :y => @y + Gosu::offset_y(@angle, 0), :angle => @angle)
end

It sort of works, but not exactly how it ideally should. For reference, this is what the Bullet class looks like:

class Bullet < Chingu::GameObject
  def initialize(options)
    super(options.merge(:image => Gosu::Image["assets/laser.png"]))
    @speed = 7
    self.velocity_x = Gosu::offset_x(@angle, @speed)
    self.velocity_y = Gosu::offset_y(@angle, @speed)
  end

  def update
    @y += self.velocity_y
    @x += self.velocity_x
  end
end

How should I construct "def fire" in order to get the extra bullets to align properly when the spaceship rotates?

good http://i44.tinypic.com/2rym68h.png

In the first image (above) the bullets are separated as intended.

bad http://i40.tinypic.com/23hkbc1.png

In the second image the bullets are clumping together when the spaceship is rotated.

I am trying to create a weapons upgrade for my Spaceship, using libGosu and Chingu (in Ruby).

In the player class I have tried several variations of the following:

def fire
  Bullet.create(:x => @x, :y => @y, :angle => @angle)
  Bullet.create(:x => @x + Gosu::offset_x(90, 25), :y => @y + Gosu::offset_y(@angle, 0), :angle => @angle)
end

It sort of works, but not exactly how it ideally should. For reference, this is what the Bullet class looks like:

class Bullet < Chingu::GameObject
  def initialize(options)
    super(options.merge(:image => Gosu::Image["assets/laser.png"]))
    @speed = 7
    self.velocity_x = Gosu::offset_x(@angle, @speed)
    self.velocity_y = Gosu::offset_y(@angle, @speed)
  end

  def update
    @y += self.velocity_y
    @x += self.velocity_x
  end
end

How should I construct "def fire" in order to get the extra bullets to align properly when the spaceship rotates?

good http://i44.tinypic.com/2rym68h.png

In the first image (above) the bullets are separated as intended.

bad http://i40.tinypic.com/23hkbc1.png

In the second image the bullets are clumping together when the spaceship is rotated.

I am trying to create a weapons upgrade for my Spaceship, using libGosu and Chingu (in Ruby). This question is about how to deal with this issue specifically in Ruby, and more specifically in libGosu.

In the player class I have tried several variations of the following:

def fire
  Bullet.create(:x => @x, :y => @y, :angle => @angle)
  Bullet.create(:x => @x + Gosu::offset_x(90, 25), :y => @y + Gosu::offset_y(@angle, 0), :angle => @angle)
end

It sort of works, but not exactly how it ideally should. For reference, this is what the Bullet class looks like:

class Bullet < Chingu::GameObject
  def initialize(options)
    super(options.merge(:image => Gosu::Image["assets/laser.png"]))
    @speed = 7
    self.velocity_x = Gosu::offset_x(@angle, @speed)
    self.velocity_y = Gosu::offset_y(@angle, @speed)
  end

  def update
    @y += self.velocity_y
    @x += self.velocity_x
  end
end

How should I construct "def fire" in order to get the extra bullets to align properly when the spaceship rotates?

good http://i44.tinypic.com/2rym68h.png

In the first image (above) the bullets are separated as intended.

bad http://i40.tinypic.com/23hkbc1.png

In the second image the bullets are clumping together when the spaceship is rotated.

Post Closed as "Duplicate" by bummzack, Anko, Seth Battin, Sean Middleditch, House

Shooting many bullets toward the mouse position

occurred Sep 4, 2013 at 17:00

Tweeted twitter.com/#!/StackGameDev/status/374413062650208257

occurred Sep 2, 2013 at 6:06

removed more irrelevant code

Source Link

edited Sep 2, 2013 at 5:30

eagleDog

53
6

I am trying to create a weapons upgrade for my Spaceship, using libGosu and Chingu (in Ruby).

In the player class I have tried several variations of the following:

def fire
  @shoot.play(rand(0.05..0.1))
  Bullet.create(:x => @x, :y => @y, :angle => @angle)
  Bullet.create(:x => @x + Gosu::offset_x(90, 25), :y => @y + Gosu::offset_y(@angle, 0), :angle => @angle)
end

It sort of works, but not exactly how it ideally should. For reference, this is what the Bullet class looks like:

class Bullet < Chingu::GameObject
  def initialize(options)
    super(options.merge(:image => Gosu::Image["assets/laser.png"]))
    @speed = 7
    self.velocity_x = Gosu::offset_x(@angle, @speed)
    self.velocity_y = Gosu::offset_y(@angle, @speed)
  end

  def update
    @y += self.velocity_y
    @x += self.velocity_x
  end
end

How should I construct "def fire" in order to get the extra bullets to align properly when the spaceship rotates?

good http://i44.tinypic.com/2rym68h.png

In the first image (above) the bullets are separated as intended.

bad http://i40.tinypic.com/23hkbc1.png

In the second image the bullets are clumping together when the spaceship is rotated.

I am trying to create a weapons upgrade for my Spaceship, using libGosu and Chingu (in Ruby).

In the player class I have tried several variations of the following:

def fire
  @shoot.play(rand(0.05..0.1))
  Bullet.create(:x => @x, :y => @y, :angle => @angle)
  Bullet.create(:x => @x + Gosu::offset_x(90, 25), :y => @y + Gosu::offset_y(@angle, 0), :angle => @angle)
end

It sort of works, but not exactly how it ideally should. For reference, this is what the Bullet class looks like:

class Bullet < Chingu::GameObject
  def initialize(options)
    super(options.merge(:image => Gosu::Image["assets/laser.png"]))
    @speed = 7
    self.velocity_x = Gosu::offset_x(@angle, @speed)
    self.velocity_y = Gosu::offset_y(@angle, @speed)
  end

  def update
    @y += self.velocity_y
    @x += self.velocity_x
  end
end

How should I construct "def fire" in order to get the extra bullets to align properly when the spaceship rotates?

good http://i44.tinypic.com/2rym68h.png

In the first image (above) the bullets are separated as intended.

bad http://i40.tinypic.com/23hkbc1.png

In the second image the bullets are clumping together when the spaceship is rotated.

I am trying to create a weapons upgrade for my Spaceship, using libGosu and Chingu (in Ruby).

In the player class I have tried several variations of the following:

def fire
  Bullet.create(:x => @x, :y => @y, :angle => @angle)
  Bullet.create(:x => @x + Gosu::offset_x(90, 25), :y => @y + Gosu::offset_y(@angle, 0), :angle => @angle)
end

It sort of works, but not exactly how it ideally should. For reference, this is what the Bullet class looks like:

class Bullet < Chingu::GameObject
  def initialize(options)
    super(options.merge(:image => Gosu::Image["assets/laser.png"]))
    @speed = 7
    self.velocity_x = Gosu::offset_x(@angle, @speed)
    self.velocity_y = Gosu::offset_y(@angle, @speed)
  end

  def update
    @y += self.velocity_y
    @x += self.velocity_x
  end
end

How should I construct "def fire" in order to get the extra bullets to align properly when the spaceship rotates?

good http://i44.tinypic.com/2rym68h.png

In the first image (above) the bullets are separated as intended.

bad http://i40.tinypic.com/23hkbc1.png

In the second image the bullets are clumping together when the spaceship is rotated.

removed superfluous code

Source Link

edited Sep 2, 2013 at 4:54

eagleDog

53
6

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improved images

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edited Sep 2, 2013 at 4:44

eagleDog

53
6

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minor format change

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edited Sep 2, 2013 at 4:31

eagleDog

53
6

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tags go in tags, not title

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edited Sep 2, 2013 at 2:47

House

73.5k
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188
276

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added reference to Game Engines in description

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edited Sep 2, 2013 at 2:31

eagleDog

53
6

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asked Sep 2, 2013 at 2:16

eagleDog

53
6

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