endless.rb

require 'gosu'

TICKS_PER_JUMP = 50
FONT_COLOR = 0xff_ffff00
class GameWindow < Gosu::Window
  def initialize
    super 640, 480
    self.caption = "Runner"
     @floor = [Floor.new(50, 400), Floor.new(350, 400), Floor.new(650, 400)]
     @player = Player.new(75, 200)
     @test_text = Gosu::Font.new(20)
     @countdown = 0
  end

  def button_down(id=Gosu::KbSpace)
    if id == Gosu::KbSpace and @countdown == 0
      @countdown = TICKS_PER_JUMP
      @player.jump
      end
  end

  def update
    @floor[0].move
    @floor[1].move
    @floor[2].move
    @player.y += 5 unless @floor[0].solid?(@player.x, @player.y) || @floor[1].solid?(@player.x, @player.y) || @floor[2].solid?(@player.x, @player.y)
    if @countdown > 0
      @countdown -= 1
    end
=begin
      if Gosu::button_down(Gosu::KbSpace) and @countdown >= 0
         @countdown = TICKS_PER_JUMP
         @player.jump
    end
=end
  end


  def draw
#player x coordinates are always the same.
    #@test_text.draw("Floor X => #{@floor.x} Floor Y => #{@floor.y}", 40, 40, FONT_COLOR)
    #@test_text.draw("Player X => #{@player.x} Player Y => #{@player.y}", 40, 60, FONT_COLOR)

    #@test_text.draw("Floor X => #{(@floor.x .. (@floor.x + @floor.end_of_floor))} Floor Y => #{@floor.y}", 40, 80, FONT_COLOR)
    #@test_text.draw("Floor X => #{(@floor.x .. (@floor.x + @floor.end_of_floor)).include?(@player.x)} Floor Y => #{@floor.y}", 40, 100, FONT_COLOR)
    @test_text.draw("Countdown => #{@countdown}", 40, 100, FONT_COLOR)
    @floor[0].draw
    @floor[1].draw
    @floor[2].draw
    @player.draw
  end
end

class Floor
  attr_accessor :x, :y, :icon, :text, :end_of_floor
  def initialize(x, y)
    Gosu::Font.new(20)
    @x = x
    @y = y
    @icon = Gosu::Font.new(20)
    @text = "_________________________________________________________________________________________"
#this is the perfect length of the floor "__________________"
    @end_of_floor = self.icon.text_width(self.text)
  end

  def draw
    self.icon.draw(@text, @x, @y, FONT_COLOR)
  end

  def move
    if @x <= -(@icon.text_width(@text))
      @x = 640
    else
      @x -= 3
    end
  end

  def solid?(player_x, player_y)
    (@x ..(@x + @end_of_floor)).include?(player_x) && player_y == @y
  end
end

class Player
  attr_accessor  :x, :y
  def initialize(x, y)
    @icon = Gosu::Font.new(20)
    @x = x
    @y = y
  end

  def jump
    @y -= 20
  end

  def draw
    @icon.draw("@", @x, @y, FONT_COLOR)
  end
end
window = GameWindow.new
window.show