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by ryan davis



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graphics

a simple framework to implement games and/or simulations

Description

Graphics provides a simple framework to implement games and/or simulations and is designed to follow mathematical conventions, NOT game programming conventions. Particularly it:

  • Uses degrees.
  • Draws in quadrant 1 (0-90 degrees).
  • Right hand rule: 0 degrees is east, 90 is north, etc.

These allow simple things like Trigonometry functions to work as expected. It means that all that stuff you were taught it grade school still work as intended. This makes one less thing you have to adjust when implementing your simulation.

Features & Problems

  • REAL MATHS!
  • Simple drawing primitives.
  • PRETTY drawing primitives! Nearly everything is anti-aliased.
  • Plenty of helpers to make your code clean

Synopsis

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class Ball < Graphics::Body
  def initialize w
    super

    # ...
  end

  def draw
    w.angle x, y, a, 10+3*m, :red
    w.circle x, y, 5, :white, :filled
  end

  def update
    fall
    move
    bounce
  end

  # ...
end

class BounceSimulation < Graphics::Simulation
  attr_accessor :bs

  def initialize
    super 640, 640, 16, "Bounce"

    self.bs = populate Ball
  end

  def update n
    bs.each(&:update)
  end

  def draw n
    clear
    bs.each(&:draw)
    fps n
  end

  # ...
end

BounceSimulation.new.run

See examples/*.rb for more

Get The Code

If you just want to use graphics, you can install it via RubyGems:
gem install graphics
Fork me on GitHub If you want to hack on graphics, clone it from GitHub:
git clone git://github.com/seattlerb/graphics

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