#!/usr/bin/env python
#
# Patches and hooks for the binary translation of GAME.EXE.
# Micah Elizabeth Scott <*****@*****.**>
#
import sys
import sbt86
import bt_common
b = sbt86.DOSBinary('build/game.exe')
bt_common.patch(b)
bt_common.patchChips(b)
bt_common.patchLoadSave(b)
b.decl("#include <stdio.h>")
b.patchAndHook(b.findCode('2c01 :2f a2____ a2____ b12c 32ed'),
'nop',
length=1,
cCode='''
sassert(false, "Unimplemented DAS instruction\\n");
''')
b.writeCodeToFile('build/bt_game.cpp', 'GameEXE')
#
# We want to start with GAME.EXE since it's the only binary that knows
# about the fourth robot, but we trim out most of the code via
# patching. Everything that modifies the world state can be removed,
# since we're just rendering the state copied from another binary.
#
# Micah Elizabeth Scott <*****@*****.**>
#
import sbt86
import bt_common
b = sbt86.DOSBinary('build/game.exe')
bt_common.patch(b)
bt_common.patchChips(b)
# Skip command line parsing
b.patch('0DAB:0005', 'jmp 0x005D')
# Skip reading world data
b.patch('0DAB:01A3', 'jmp 0x01CE')
# Skip reading circuit data
b.patch('0DAB:01F0', 'jmp 0x0219')
# Statically remove all main loops other than Level 1, skip video mode
# initialization, and skip chip loading. We still need to be sure to
# run the sprite table initialization though, which is buried in the
# same subroutine as chip loading.
b.patch('0DAB:2C0F', 'jmp 0x66b5')