Class: ExplosionParticle

Inherits:
Chingu::GameObject
  • Object
show all
Includes:
GamespacePersistence
Defined in:
lib/prkwars/explosionparticle.rb

Overview

Class used for holding behaviour of particles during explosions of various entitites.

Instance Method Summary collapse

Methods included from GamespacePersistence

#correct_coords, #in_bounds

Constructor Details

#initialize(gamespace, options = {}) ⇒ ExplosionParticle

Generates an explosion particle with a set fade_rate (chingu). X and Y velocity is picked randomly between (-7..7).



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# File 'lib/prkwars/explosionparticle.rb', line 18

def initialize(gamespace, options = {})
  super(options)

  @gamespace = gamespace
  @fade_rate = -3
  @mode = :default
  @image = Image['media/myparticle.png']
  @velocity_x = rand(-7..7)
  @velocity_y = rand(-7..7)
  @angle = Math.atan2(@velocity_x, @velocity_y) / Math::PI * 180 + 90
end

Instance Method Details

#update ⇒ Object

In case a particle collides with the gamespace boundaries, velocity gets corrected (impact angle to the other side). A particle gets destroyed once it completely fades out.



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# File 'lib/prkwars/explosionparticle.rb', line 35

def update
  velocity_correct! unless bounding_box.collide_rect?(@gamespace.bounding_box)
  destroy! if color.alpha.zero?
end