bbbradsmith

# generates SVG diagram:
# https://commons.wikimedia.org/wiki/File:Affine_texture_mapping_tri_vs_quad.svg

import math

GRID = 8
FTW = 100 # top board width
FBW = 200 # bottom board width
FH  = 156
COLBG = "#B4B3D2"

bbbradsmith

# A recreation of:
#   https://commons.wikimedia.org/wiki/File:Perspective_correct_texture_mapping.jpg
#
# To give a simple code demonstration of perspective correction,
# and simple barycentric triangle coordinates.
#
# Note that this is a "naive" implementation,
# and the resulting floating point errors will produce some rough edges on the checkerboard texture.
# It would be more efficient and more numerically stable to rasterize the triangle instead,
# but this demonstrates a simple way to generate coordinates without the additional complexity of rasterization.

bbbradsmith

# Sprite / Map dumper for Vigilance on Talos V (19960
# place in "dump" folder within Talos install directory and run

import os
import struct
import PIL.Image

DEFAULT_BG = 13 # magenta

def filename_flatten(f):

bbbradsmith

# Sprite / Map dumper for Sinaria: Lost in Space (1994)
# place in "dump" folder within Sinaria install directory and run

import os
import struct
import PIL.Image

#DEFAULT_BG = 27 # red
DEFAULT_BG = 140 # magenta

bbbradsmith

#!/usr/bin/env python3
import sys
assert sys.version_info[0] >= 3, "Python 3 required."

#
# nsfe_to_nsf2.py
# Brad Smith, 2018-08-24
#
# This converts an NSFe file to a preliminary "NSF2 with metadata" format.
#

bbbradsmith

# Extracts sprites from the Korean DOS game Ice Kiss
# First run icekiss_sprite_file_extract.py to create the sprite bin files
# Also, take a screenshot of the gameplay with DOSBox to make a PNG with the correct palette
# Then run this to extract graphics from them

import PIL.Image

screenshot = PIL.Image.open("screenshot.png") # use for palette

def decode_file(filename):

bbbradsmith

#!/usr/bin/env python3
#
# circlemap.py
# Brad Smith, 2019
# http://rainwarrior.ca
#
# Example renderings of the chaotic Circle Map.
# http://mathworld.wolfram.com/CircleMap.html

import sys

bbbradsmith

#!/usr/bin/env python3

#
# Pasti .STX Atari ST image to .ST image converter.
# Creates an ST file using the sectors found in an STX, and reports missing/error sectors.
#
# Usage:
#   stx_to_st("a.stx")
#   stx_to_st("in.stx","out.st",tracks,sides,sectors)
#

bbbradsmith

# Files:
# Iga Ninden Gaiou (Japan).chd CRC32 1243A2DE
#
# Use chdman to extractcd:
# ing.bin CRC32 07E9BA8D

romin = "ing.bin"
romout = "inge.bin"

rom = open(romin,"rb").read()

bbbradsmith

#!/usr/bin/env python3

#
# Pasti .STX Atari ST disk image info dumper
# Prints out a human-readable version of all data found in the file
#
# Usage:
#   stx_dump("a.stx")
#
# Based on Pasti reverse engineering: