Häromdagen skrev jag en ircbot i php. Det var sådär skoj. Idag skrev jag ett pongspel i ruby med curses som gränssnitt.

Ruby är riktigt skoj och har ett väldigt bra system för att hantera klasser, den kan t.ex enkelt skapa getters och setters för objekt i en klass helt automagiskt - vilket jag gillar.

Next to try: python!

#!/usr/bin/ruby

#init curses
require "ncurses"

Ncurses::initscr

#CONFIG

Ncurses::nl
Ncurses::noecho
Ncurses::curs_set(0)
Ncurses::nodelay(Ncurses::stdscr, true)
Ncurses::raw

Ncurses::keypad(Ncurses::stdscr,1)

Ncurses::start_color
Ncurses::init_pair(1,Ncurses::COLOR_GREEN, Ncurses::COLOR_RED)
Ncurses::init_pair(2,Ncurses::COLOR_CYAN, Ncurses::COLOR_BLACK)

my_window = Ncurses::WINDOW.new(24,75,0,0)

#the pong class
class Pong
	attr_accessor :x, :y, :keyUP, :keyDOWN, :length, :score
	def move(direction)
		if (direction == 1)
			@y = @y-1
		
		elsif (direction == 2)
			@y = @y+1
		end
	end

end

class Ball
	attr_accessor :x, :y, :xspeed, :yspeed, :oldy, :oldx

	def move
		@oldx = @x
		@oldy = @y
		@x = @x + @xspeed
		@y = @y + @yspeed
	end
end


#create a pong

firstpong = Pong.new
firstpong.x = 4
firstpong.y = 4
firstpong.keyUP = "KEY_UP"
firstpong.keyDOWN = "KEY_DOWN"
firstpong.length = 6
firstpong.score = 0

#and another one
secondpong = Pong.new
secondpong.x = 70
secondpong.y = 15
secondpong.keyUP = "KEY_LEFT"
secondpong.keyDOWN= "KEY_RIGHT"
secondpong.length = 6
secondpong.score = 0


#okay now we have the pongs. 

#lets put a ball on the field!

ball = Ball.new
ball.x = 15
ball.y = 10
ball.xspeed=1
ball.yspeed=1

#main loop
pause = false
begin
	
	case(Ncurses.getch)
	
		when "q"[0]
			break
		when "p"[0]
			if pause
				pause = false
			else
				pause = true
		end

		when Ncurses::KEY_UP
			secondpong.move(1)
	
		when Ncurses::KEY_DOWN
			secondpong.move(2)

		when "a"[0]
			firstpong.move(1)

		when "z"[0]
			firstpong.move(2)
	end
	#do some magic ball things, like move it and why do we do that? because WE LIKE TO MOVE IT MOVE IT, WE LIKE TO MOVE IT MOVE IT
	if(!pause)
		ball.move
		#check if ball hits wall
		if(ball.x >= 72)
			ball.xspeed = -1
		elsif(ball.x <=1)
			ball.xspeed=1
		elsif(ball.y <= 2)
			ball.yspeed = 1
		elsif(ball.y >= 22)
			ball.yspeed = -1
		end

		#check if ball hits a pong

		if(ball.x == firstpong.x)
			if(ball.y >= firstpong.y && ball.y <= firstpong.y + firstpong.length)
				ball.xspeed *= -1;
			end	
		elsif(ball.x == secondpong.x)
			if(ball.y >=secondpong.y && ball.y <= secondpong.y + secondpong.length)
				ball.xspeed *= -1;
			end

		#check if ball hits a goal
	
		#uglyhack - goal starts at x 0 and x74, and its 15 long, both start at y5  later do this dynamical
		elsif(ball.x == 1 && ball.y >= 5 && ball.y<= 5 + 15 )
			secondpong.score += 1
			ball.x = 25
		elsif(ball.x == 72 && ball.y >=5 && ball.y<= 5 + 15 )
			firstpong.score += 1
			ball.x = 25

		end

	
		
		#draw things
		my_window.border(*([0]*8))
		my_window.color_set(2,nil)

		#draw a black square on the old ball location
		my_window.mvaddstr(ball.oldy , ball.oldx , " ")
	
		my_window.mvaddstr(ball.y,ball.x, "*")

	
	
		#do the PONGS!
		c=0
		my_window.mvaddstr(firstpong.y - 1, firstpong.x, " ");
	
		my_window.color_set(1,nil)
		begin
			my_window.mvaddstr(firstpong.y + c,firstpong.x, " ")
			c = c+1	
		end while c<firstpong.length

		my_window.color_set(2,nil)
		my_window.mvaddstr(firstpong.y + c , firstpong.x, " ")
		#second pong
		my_window.color_set(2,nil)
		my_window.mvaddstr(secondpong.y - 1, secondpong.x , " ")
		c=0

		my_window.color_set(1,nil)

		begin
			my_window.mvaddstr(secondpong.y + c,secondpong.x, " ")
			c=c+1
		end while c<secondpong.length
		my_window.color_set(2,nil)
		my_window.mvaddstr(secondpong.y + c, secondpong.x, " ")

		#and we need some goals as well. otherwise it is impossible to wine the game!
		i = 0
		begin
			my_window.mvaddstr(5 + i, 0, " ")
			my_window.mvaddstr(5 + i, 74, " ")
			i+=1
		end while i < 15

		#write out what we have here now
		my_window.mvaddstr(23, 4, "| Ping: " + firstpong.score.to_s + " | Pong: " + secondpong.score.to_s + " | q to quit, p to pause")
	

		#update screen
		my_window.noutrefresh()
		Ncurses::doupdate
		sleep(0.05)
	end
end while true
Ncurses::echo
Ncurses::nocbreak
Ncurses::curs_set(1)
Ncurses::endwin