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Script Transpiler (by deckarep)

First of all, the Python3 transpiler is built on top (read: kinda-hacked onto) sluicebox's huge body of work. Most of the hardwork was done by him to unleash a decompiler that as far as I can tell and tested, is damn near complete. This work wouldn't exist without his hard work and therefore most of the credit goes to him as well as those who came before him with respect to SCI reverse engineering. Please read the Tools (next section below) by sluicebox for context on his original decompiler work.

With that said, can we convert Sierra's SCI Script into something runnable and is it even remotely possible?

• Step 1: Transpile SCI Script to Python3

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class Int16:
    def __init__(self, value):
        self.value = value & 0xFFFF  # Always keep it 16-bit

    def _wrap(self, result):
        return Int16(result)

    def signed(self):
        return self.value if self.value < 0x8000 else self.value - 0x10000

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# Original credit: @doomlazer
# https://github.com/Doomlazer/TrivialQuest/blob/main/audio/jokes/ExtractWavs.py
# Extract wav files from Larry's Casino audio.vol
# Sound effects can also be dumped from resources.vol
# jokes are 71.wav - 183.wav
#
# command to convert wav to mp3:
# for f in *.wav; do ffmpeg -i "$f" "${f%.wav}.mp3"; done

import struct

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# Hello, before anyone freaks out this is just an experiment...to see how far the rabbit hole can go.

# Original .sc file for ref: https://github.com/EricOakford/SCI-Decompilation-Archive/blob/master/lsl1/src/rmSidewalk.sc

# SCI script is really interesting to me, but largely outdated
# Based on a combination of Small-Talk and Lisp, with Prefix notation for expressions...it can get unwieldy
#   to read at least for me. Boat-load of paranthesis and expressions that don't read like normal infix notation.

# But,

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#!/usr/bin/env python3

import sys

class NasmAligner:
    def __init__(self, start_address=0):
        self.alignments = {'DB': 1, 'DW': 2, 'DD': 4, 'DQ': 8}
        self.output_lines = []
        self.current_address = start_address

deckarep

import sys

def check_alignment(val):
    alignments = {
        '2-byte': val & 0x1 == 0,
        '4-byte': val & 0x3 == 0,
        '8-byte': val & 0x7 == 0,
        '16-byte': val & 0xF == 0,
        '32-byte': val & 0x1F == 0,
        '64-byte': val & 0x3F == 0,

deckarep

package main

import (
	"encoding/binary"
	"fmt"
	"image"
	"image/color"
	"image/png"
	"io/ioutil"
	"log"

deckarep

rand 	equ 	$04

;uint8_t next_rnd(void)
;{
;    static uint8_t rnd;
;    rnd = rnd * 5 + 17;
;    return rnd;
;}

; returns a pseudo rand store at memory location: rand

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package main

// to run: go run *.go

import (
	fmt "fmt"
	"log"

	proto "github.com/gogo/protobuf/proto"
)

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syntax = "proto2";

option go_package = "main";

message Dog {
  required int32 owner_id= 1;
  optional string breed = 2;
  optional float height_in = 3;
  optional string color = 4;
}