Steam Locomotive in go - http://play.golang.org/p/NOycgN2i6b

sl.go

package main

import (
	"time"
	"fmt"
	"strings"
)

func main() {
	p := [][][]string {
		{
			{
				"                      (@@) (  ) (@)  ( )  @@    ()    @     O     @     O      @",
				"                 (   )",
				"             (@@@@)",
				"          (    )",
				"",
				"        (@@@)",
			},
			{
				"                      (  ) (@@) ( )  (@)  ()    @@    O     @     O     @      O",
				"                 (@@@)",
				"             (    )",
				"          (@@@@)",
				"",
				"        (   )",
			},
		},
		{
			{
				"      ====        ________                ___________ ",
				"  _D _|  |_______/        \\__I_I_____===__|_________| ",
				"   |(_)---  |   H\\________/ |   |        =|___ ___|      _________________         ",
				"   /     |  |   H  |  |     |   |         ||_| |_||     _|                \\_____A  ",
				"  |      |  |   H  |__--------------------| [___] |   =|                        |  ",
				"  | ________|___H__/__|_____/[][]~\\_______|       |   -|                        |  ",
				"  |/ |   |-----------I_____I [][] []  D   |=======|____|________________________|_ ",
			},
		},
		{
			{
				"__/ =| o |=-O=====O=====O=====O \\ ____Y___________|__|__________________________|_ ",
				" |/-=|___|=    ||    ||    ||    |_____/~\\___/          |_D__D__D_|  |_D__D__D_|   ",
				"  \\_/      \\__/  \\__/  \\__/  \\__/      \\_/               \\_/   \\_/    \\_/   \\_/    ",
			},
			{
				"__/ =| o |=-~~\\  /~~\\  /~~\\  /~~\\ ____Y___________|__|__________________________|_ ",
				" |/-=|___|=O=====O=====O=====O   |_____/~\\___/          |_D__D__D_|  |_D__D__D_|   ",
				"  \\_/      \\__/  \\__/  \\__/  \\__/      \\_/               \\_/   \\_/    \\_/   \\_/    ",
			},
			{
				"__/ =| o |=-~~\\  /~~\\  /~~\\  /~~\\ ____Y___________|__|__________________________|_ ",
				" |/-=|___|=    ||    ||    ||    |_____/~\\___/          |_D__D__D_|  |_D__D__D_|   ",
				"  \\_/      \\O=====O=====O=====O_/      \\_/               \\_/   \\_/    \\_/   \\_/    ",
			},
			{
				"__/ =| o |=-~~\\  /~~\\  /~~\\  /~~\\ ____Y___________|__|__________________________|_ ",
				" |/-=|___|=    ||    ||    ||    |_____/~\\___/          |_D__D__D_|  |_D__D__D_|   ",
				"  \\_/      \\_O=====O=====O=====O/      \\_/               \\_/   \\_/    \\_/   \\_/    ",
			},
			{
				"__/ =| o |=-~~\\  /~~\\  /~~\\  /~~\\ ____Y___________|__|__________________________|_ ",
				" |/-=|___|=   O=====O=====O=====O|_____/~\\___/          |_D__D__D_|  |_D__D__D_|   ",
				"  \\_/      \\__/  \\__/  \\__/  \\__/      \\_/               \\_/   \\_/    \\_/   \\_/    ",
			},
			{
				"__/ =| o |=-~O=====O=====O=====O\\ ____Y___________|__|__________________________|_ ",
				" |/-=|___|=    ||    ||    ||    |_____/~\\___/          |_D__D__D_|  |_D__D__D_|   ",
				"  \\_/      \\__/  \\__/  \\__/  \\__/      \\_/               \\_/   \\_/    \\_/   \\_/    ",
			},
		},
	}

	x := 80
	for _, ll := range p {
		for _, l := range ll {
			for n := range l {
				l[n] = strings.Repeat(" ", x) + l[n]
			}
		}
	}
	x = 0

	for {
		fmt.Print("\x0c")
		for _, pp := range p {
			for _, l := range pp[x % len(pp)] {
				if x < len(l) {
					fmt.Println(string(l[x:]))
				} else {
					fmt.Println()
				}

			}
		}
		time.Sleep(time.Second / 20)
		if x++; x > 165 {
			break
		}
	}
}