Difference between revisions of "Intermediate C++ Game Programming Tutorial 18"

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(Part 1)
Line 18: Line 18:
 
== Source Code ==
 
== Source Code ==
 
[https://github.com/planetchili/Inheritance Inheritance Github Repository]<br />
 
[https://github.com/planetchili/Inheritance Inheritance Github Repository]<br />
 +
 +
== Errata ==
 +
* Forgot the <code>virtual</code> destructor for <code>class Weapon</code>! (this one hurts)
 +
* In the children, the function signatures should be: <code>int CalculateDamage( const Attributes& attr,Dice& d ) const override</code>
 +
* Though not technically an error, it might have been a better decision to make Weapon::GetName() and Weapon::GetRank() pure virtual functions (this would reduce the amount of per-instance data to just the vtable ptr)
  
 
== See also ==
 
== See also ==
 
* [[Intermediate C++ Game Programming Tutorial 19|Next in series (Tutorial 19)]]
 
* [[Intermediate C++ Game Programming Tutorial 19|Next in series (Tutorial 19)]]
 
* [[Intermediate C++ Game Programming Series]]
 
* [[Intermediate C++ Game Programming Series]]

Revision as of 13:24, 12 December 2017

Another two-parter here, and we got the real stuff now. Virtual functions allow you to unlock the true potential of inheritance in C++. You need to know this shit.

Topics Covered

Part 1

  • How to create a virtual function
  • Using the override keyword
  • Creating a pure virtual function
  • Using a container of pointers to manage a heterogeneous collection of objects
  • virtual destructors

Part 2

  • Using inheritance and composition together

Video Timestamp Index

Source Code

Inheritance Github Repository

Errata

  • Forgot the virtual destructor for class Weapon! (this one hurts)
  • In the children, the function signatures should be: int CalculateDamage( const Attributes& attr,Dice& d ) const override
  • Though not technically an error, it might have been a better decision to make Weapon::GetName() and Weapon::GetRank() pure virtual functions (this would reduce the amount of per-instance data to just the vtable ptr)

See also