Deepak Surti dmsurti

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

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) becaus

	CL-USER 1 > (load "~/tmp/trace-method.lisp")
	; Loading text file /Users/deepaksurti/tmp/trace-method.lisp
	#P"/Users/deepaksurti/tmp/trace-method.lisp"

	CL-USER 2 > (test-foo)
	1

	CL-USER 3 > (trace (method foo (fixnum)))
	((METHOD FOO (FIXNUM)))

	# yes = True
	# y = True
	# no = False
	# n = False

	questions = {
	"strong": "Do ye like yer drinks strong?",
	"salty": "Do ye like it with a salty tang?",
	"bitter": "Are ye a lubber who likes it bitter?",
	"sweet": "Would ye like a bit of sweetness with yer poison?",

	import random

	questions = {
	"strong": "Do ye like yer drinks strong?",
	"salty": "Do ye like it with a salty tang?",
	"bitter": "Are ye a lubber who likes it bitter?",
	"sweet": "Would ye like a bit of sweetness with yer poison?",
	"fruity": "Are ye one for a fruity finish?",
	}

	import random

	questions = {
	"strong": "Do ye like yer drinks strong?",
	"salty": "Do ye like it with a salty tang?",
	"bitter": "Are ye a lubber who likes it bitter?",
	"sweet": "Would ye like a bit of sweetness with yer poison?",
	"fruity": "Are ye one for a fruity finish?",
	}

	import bpy

	# Distributes the weighting on the vertices so that at most 'maxInfluence'
	# bones affect the vertex.
	def distributeWeight(obj, maxInfluence):

	print("--- %s ----" % (obj.name))

	# Access the mesh data.
	mesh = obj.data

	import json
	import python_jsonschema_objects as pjs

	schema = {
	"title": "Example Schema",
	"type" : "object",
	"properties": {
	"blocks": {
	"id": "/properties/blocks",
	"properties": {

	#def is a keyword

	# fizzbuzz_gen is the function name
	# generates the fizzbuzz strings from 1 to n
	def fizzbuzz_gen(n):
	fizzbuzz_strings = []
	for num in range(1, n + 1):
	print("Fizz buzz counting up to {}".format(num))
	if num % 3 == 0 and num % 5 == 0:
	fizzbuzz_string.append("fizzbuzz")