raysan5

CUSTOM GAME ENGINES: A Small Study

A couple of weeks ago I played (and finished) A Plague Tale, a game by Asobo Studio. I was really captivated by the game, not only by the beautiful graphics but also by the story and the locations in the game. I decided to investigate a bit about the game tech and I was surprised to see it was developed with a custom engine by a relatively small studio. I know there are some companies using custom engines but it's very difficult to find a detailed market study with that kind of information curated and updated. So this article.

Nowadays lots of companies choose engines like Unreal or Unity for their games (or that's what lot of people think) because d

joepie91

Your blockchain must have all of the following properties:

• It's a merkle tree, or a construct with equivalent properties.
• There is no single point of trust or authority; nodes are operated by different parties.
• Multiple 'forks' of the blockchain may exist - that is, nodes may disagree on what the full sequence of blocks looks like.
• In the case of such a fork, there must exist a deterministic consensus algorithm of some sort to decide what the "real" blockchain looks like (ie. which fork is "correct").
• The consensus algorithm must be executable with only the information contained in the blockchain (or its forks), and no external input (eg. no decisionmaking from a centralized 'trust node').

If your blockchain is missing any of the above properties, it is not a blockchain, it is just a ledger.

sfan5

#!/usr/bin/env python3
import sys
import getopt
from PIL import Image

xterm256colors = [ # http://pln.jonas.me/xterm-colors
	(0, (0x00, 0x00, 0x00)), # SYSTEM
	(1, (0x80, 0x00, 0x00)), # SYSTEM
	(2, (0x00, 0x80, 0x00)), # SYSTEM
	(3, (0x80, 0x80, 0x00)), # SYSTEM

eevee

class WeakProperty:
    """Descriptor that automatically holds onto whatever it contains as a weak
    reference.  Reading this attribute will never raise `AttributeError`; if
    the reference is broken or missing, you'll just get `None`.

    The actual weak reference is stored in the object's `__dict__` under the
    given name, so this acts as sort of a transparent proxy that lets you
    forget you're dealing with weakrefs at all.

    Of course, if you try to assign a value that can't be weak referenced,

0xabad1dea

Abadidea's Index of Weird Machines in Video Games

A "weird machine" is when user-supplied input is able to create an arbitrary new program running within an existing program due to Turing-completeness being exposed. Sometimes such functionality was deliberately included but it is often the result of exploitation of memory corruption. You can learn more at the langsec site. There is a good argument for weird machines being inherently dangerous, but this index is just for fun.

It is broken into two categories: intentional gameplay features which may be used as weird machines, and exploit-based machines which can be triggered by ordinary player input (tool-assisted for speed and precision is acceptable). Games with the sole purpose of programming (such as Core Wars) are not eligible and plugin APIs don't count. If you know of more, feel free to add a comment to this gist.

Intentional Gameplay Mechanics

noprompt

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Sanqui

<?xml version="1.0" encoding="UTF-8"?>
<!--

 Author: Sanky
 License: Public domain

-->
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  <metadata>
    <property name="mimetypes">text/x-z80asm</property>