Created
July 17, 2011 17:22
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Pong: now with (fake) scores
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require 'rubygems' | |
require 'ray' | |
WIDTH = 800 | |
HEIGHT = 800 | |
PADDLE_X_OFFSET = 40 | |
PADDLE_WIDTH = 40 | |
BALL_RADIUS = 20 | |
SCORE_TEXT_X_OFFSET = 40 | |
def paddle(paddle_x_coord, paddle_y_coord) | |
arguments_array = [paddle_x_coord, paddle_y_coord, PADDLE_WIDTH, HEIGHT / 3] | |
Ray::Polygon.rectangle(arguments_array, Ray::Color.white) | |
end | |
def ball | |
Ray::Polygon.circle([WIDTH/2, HEIGHT/2], BALL_RADIUS, Ray::Color.white) | |
end | |
def pixels_left_of_center(num_pixels) | |
(WIDTH / 2) - num_pixels | |
end | |
def pixels_right_of_center(num_pixels) | |
(WIDTH / 2) + num_pixels | |
end | |
Ray.game 'Pong', :size => [WIDTH, HEIGHT] do | |
register { add_hook(:quit, method(:exit!)) } | |
scene :start do | |
@left_paddle = paddle(PADDLE_X_OFFSET, 100) | |
@right_paddle = paddle(WIDTH - (PADDLE_X_OFFSET + PADDLE_WIDTH), 100) | |
@ball = ball | |
@left_score = text "left", :at => [pixels_left_of_center(SCORE_TEXT_X_OFFSET), 20], :size => 20 | |
@right_score = text "right", :at => [pixels_right_of_center(SCORE_TEXT_X_OFFSET), 20], :size => 20 | |
@scores = [@left_score, @right_score] | |
# Exit when q is pressed | |
on :key_press, key(:q){ exit! } | |
render do |win| | |
win.draw @left_paddle | |
win.draw @right_paddle | |
win.draw @ball | |
@scores.each{|score| win.draw score } | |
end | |
end | |
scenes << :start | |
end |
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