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@mmozeiko
mmozeiko / images2ico.py
Created January 10, 2022 02:24
packs multiple images into ico file
#!/usr/bin/env python3
# packs multiple images (bmp/png/...) into ico file
# width and height of images must be <= 256
# pixel format of images must be 32-bit RGBA
import argparse
import struct
import os
from PIL import Image # https://python-pillow.org/
@mmozeiko
mmozeiko / tls_client.c
Last active September 13, 2024 17:50
simple example of TLS socket client using win32 schannel api
#define WIN32_LEAN_AND_MEAN
#include <winsock2.h>
#include <windows.h>
#define SECURITY_WIN32
#include <security.h>
#include <schannel.h>
#include <shlwapi.h>
#include <assert.h>
#include <stdio.h>
@mmozeiko
mmozeiko / astar.h
Last active December 29, 2023 10:18
generic A* in C
// generic A* pathfinding
//
// INTERFACE
//
// mandatory macros
#ifndef ASTAR_POS_TYPE
#error ASTAR_POS_TYPE should specify position type
@vurtun
vurtun / _GJK.md
Last active September 5, 2024 11:08
3D Gilbert–Johnson–Keerthi (GJK) distance algorithm

Gilbert–Johnson–Keerthi (GJK) 3D distance algorithm

The Gilbert–Johnson–Keerthi (GJK) distance algorithm is a method of determining the minimum distance between two convex sets. The algorithm's stability, speed which operates in near-constant time, and small storage footprint make it popular for realtime collision detection.

Unlike many other distance algorithms, it has no requirments on geometry data to be stored in any specific format, but instead relies solely on a support function to iteratively generate closer simplices to the correct answer using the Minkowski sum (CSO) of two convex shapes.

@vurtun
vurtun / col.md
Last active March 4, 2024 05:40

screen0 screen1

@bkaradzic
bkaradzic / why_i_think_immediate_mode_gui_is_way_to_go_for_gamedev_tools.md
Last active August 18, 2024 08:25
Why I think Immediate Mode GUI is way to go for GameDev tools

Why I think Immediate Mode GUI is way to go for GameDev tools

Prerequisites

Before you continue, if you don't know what IMGUI is don't bother reading this post, just ignore it, don't write anything in comments section, etc. If you're curious about IMGUI see bottom of this post, otherwise continue whatever you were doing, this post it's not for you. Thanks!

If you know what IMGUI is, for context read following presentations and blog posts:

  • Insomniac’s Web Tools Postmortem
@zacharycarter
zacharycarter / wclwn.md
Last active August 19, 2024 03:44
Binding to C Libraries with Nim
@mmozeiko
mmozeiko / ctime.c
Last active July 1, 2024 05:21
ctime.c
/* ========================================================================
$File: tools/ctime/ctime.c $
$Date: 2016/05/08 04:16:55PM $
$Revision: 7 $
$Creator: Casey Muratori $
$Notice:
The author of this software MAKES NO WARRANTY as to the RELIABILITY,
SUITABILITY, or USABILITY of this software. USE IT AT YOUR OWN RISK.
@erincatto
erincatto / gist:5e01bb76b8e797cf8f95
Last active April 26, 2016 17:28
Featherstone
Given J*JT * x = b, solve for x in linear time and space.
J is m by n
x is m by 1
b is m by 1
m < n
J is a rectangular matrix that represents a tree with equal and opposite entries.
For example: