25 May 2019

Software project basics

History / Edit / PDF / EPUB / BIB / 1 min read (~112 words)
  • Code changes are stored in git
  • Setup continuous integration
  • Have a testing framework
  • Use dependency management
  • Define a code standard
  • Prefer function/method typing over dynamic types
  • On every push to git
    • Code quality check
    • Code style check
    • Unit/functional/integration/system tests
      • Code coverage should be recorded during tests and a report made available
  • A project repository must have a README.md explaining how to run the project on your own computer
  • A project repository must have a RELEASING.md explaining how to release the code
  • Responsibilities are made explicit in terms of roles
  • Critical roles, such as project lead, must have a backup/shadow individual
  • Setup telemetry, alerts, profiling, logging
25 May 2019

Working in a software company

History / Edit / PDF / EPUB / BIB / 1 min read (~48 words)
  • Always prioritize your work
  • Always work on something that is a task in a task tracking system
    • You should always be able to tell someone else what task you are working on and link them to that task
  • Always provide an agenda when you book meetings with others
29 Dec 2018

League of legends

History / Edit / PDF / EPUB / BIB / 1 min read (~66 words)
games

Client/server
Per region servers
Login/authentication server
Lobby server
Store server

  • buy champion/runes
    Transfer player from lobby to game server
  • champion selection
  • spectators
    Per game server
  • Coordinates all 10 players within the game
  • controls game events dragon/baron/npc/player gold
  • compute damage
  • end game lobby
    Game client
  • Display animations
  • play game state according to server
29 Dec 2018

Factorio

History / Edit / PDF / EPUB / BIB / 1 min read (~136 words)
games

An initial seed is computed and stored in the game save file
Based on this seed, the world is pseudo randomly computed, using a certain chunk/block/tile size (e.g., 32x32, 128x128)
The world map is only generated on-demand, that is, as far as the player can see
When a new chunk is discovered, its blocks are computed and persisted in the save file
If there are no active components in a chunk that is not visible, the game will obviously not render it, it will only simulate it (position, item, velocity, etc)
Certain thing, for instance alien types and alien base size, may only be computed once they are observed. At first, maybe only a location anchor will exist to indicate where they should spawn, but the rest will be generated only when needed.

29 Dec 2018

Diablo

History / Edit / PDF / EPUB / BIB / 1 min read (~140 words)
games

A table of probabilities is built
The ratio 1/drop chance is used to compute a total drop chance
A number is generated in the range 0-total drop chance
A table lookup is done to find the associated item
Item properties are randomly rolled
Different table lookup may be built depending on the difficulty setting as well as the current act
The rarity of an enemy pack may either change the random generator distribution or some other mean to modify the probability of higher quality items from dropping
The pseudo random number generator is initialized each game and does not depend on the current time (to avoid issue with reading some timer which may have the same value over many iterations or may be slow to read)
When an enemy is killed, we want to determine how many items will drop