2D游戏引擎设计这门课程是我在CU的2018 Fall选修的一门专业核心课程，老师是Clemson CS系比较受欢迎的 Brian Malloy教授。

课程内容

Week1

Aug 28, Tue:

• Office hour: Wed 10-11:30 AM
• Quiz on Tue or Thu
• Answer Ques about Basics or Classes:
  • ternery operator
  • namespaces
  • if (0)
• Do the Rule of 3

本周的重点内容是C++的基本语法以及Classes的使用 和 C++ Rule of 3的规则应用。在这里分别整理了两个部分的博客文章：

• C++ Rule of 3

Aug 30, Thu:

• refs vs ptrs
• r-value references
• Introduce SDL draw functions
• Review Rule of 3 – how to reproduce no crash?
• Illustrate the functions that are called: whatcalls
• Trace the Rule of 3 example from cppreference
• Rule of 0
• Introduce vectors:
  • size vs capacity
  • push_back vs emplace_back

Week2

Sep 4, Tue

• Review what get’s called:
  • why prefer init vs assign
• Introduce vectors:
  • size vs capacity
  • value semantics
  • emplace_back
• Marcus Painting
• Project #2
• Quiz #1 review

Week3

Sep 11, Tue:

• Review the quiz
• Why no vector.push_front() ???
• When to use emplace_back()?
• A temp is always an r-value reference
• review Rule of 3, Rule of 0, Rule of 5

Sep 13, Thu:

• Your game: can definitely be a “cover”
  • Keep the scope manageable – one level, etc.
• Terminology:
  • move assignment vs copy assignment
  • copy constructor vs move constructor
• Questions about move semantics
• ranged for loops:
  • ints: size vs cap
  • C++ strings
  • why no push_front for vector?
• Drawing a texture: GPU
  • Makefile
• Drawing a Surface: CPU

Week4

Sep 18, Tue:

• static variables
• Design Patterns
• The Singleton Design Pattern
• Animations with SDL:
  • cpu clock vs game clock
  • Why clear the screen
• Inheritance:

Sep 20, Thu:

• Sammy’s dilemma
• Project #2 – let’s look at my solution.
• The Meyer’s Singleton
• Polymorphism:
  • see poly example
  • shapes example
• Use g++ not clang++ for effc++ warnings
• Project #3 and the tracker framework
  • default vs delete for constructors/destructors
  • ranged for vs while
  • when to use auto
  • function overload
  • transparency vs alpha channel
  • Parallax Scrolling
  • Getting images vs “rolling your own”
  • Making videos
  • why use g++ vs clang++
  • XML

理解为什么要使用 Singleton设计模式，已详细分析了为什么要使用singleton模式，以及Singleton设计模式的好处和如何来书写Singleton. 请参考博客:

• C++软件设计模式之Singleton 包含了两种Singleton的书写方式

Week 5

Sep 25, Tue:

• Last time: Many spinning stars – tweak velocity using XML velocity as base!
• Parallax Scrolling is easy – it’s already in the code
• string streams
• making a video

Sep 27, Thu:

• Quiz #2

Week 6

Oct 2, Tue:

• maps
• sorting:
  • vectors
  • lists
• emplace_back: how to use?
• Why Singleton:
  • Gamedata?
  • Clock?
• Two-way sprites?
• SpriteSheet
• Project #2 – CANDY

Oct 4, Thu:

• Jacob Wood
• IoMod: overload writeText
  • put in Engine::draw, which is const!
  • Engine::update is NOT const!
  • draw and update called every iteration of the event list
• Why Singleton:
  • Gamedata – yes
  • Clock – no!
• Clock and fps
• string streams
• Two-way sprites?
• SpriteSheet
• projects from last year
• project #4
• sorting:
  • vectors
  • lists

Week 7

Oct 9, Thu

• Why Singleton:
  • Gamedata – yes
  • Clock – no!
• Clock and fps
• string streams
• Two-way sprites?
• SpriteSheet
• A Player Class

Oct 11, Thu:

• Does anyone get a black screen on startup?

• Good rule to follow: pre-load assets! e.g.: collision strategies.

• Reminder: Exam #1 in one week!

• Modifications to ImageFactory and/or SpriteSheet???

• Review:

  • How to make video for #3
  • Adding a Player for #4
    • slide or no slide?
    • how to fit player into tracker framework
    • to cast or not to cast, that is the question.
    • Where to put stuff in Engine.cpp

• Nested Classes: the Clock class

• Collisions

• AI:

  • observer pattern

Week 8

Oct 16, Tue:

• Erasing from a list. Vector. map
• Project #4
• Exam #1

Oct 18, Thu:

• Review Observer
• Quiz #2
• Sorting vectors and lists

Week 9

Oct 25, Thu:

• github repo
• player/composition ==> it’s composition so need player.getVelocity()
• drawable.h in tracker framework didn’t have method getSurface
• input/mouse2
  • to get pixel color see getPixel

Week 10

Nov 1, Thu:

• Write a fn object
• Review lamda functions
• Show lamda in sort
• Review Explosions
• Health bar (in your repo)
  • A model for your HUD!

Week 11

Nov 8, Tue:

• Review fn objects and lambda functions
• Review the two classes needed for Chunk explosions
• Review Object pool

Quiz 3

• Sort
  • Funciton object
  • lambda Funciton
• Search in a list, vector, map
• Erasing from a list. Vector, map
• observer pattern
• static_cast Vs dynamic_cast

自己动手写游戏引擎

• 概述
• 设计使用C++画出来图形
• 做一个Object移动的模式