Intermediate C++ Game Programming Tutorial 25 - Revision history

R vdw: /* Tutorial 25 - Solution */

2020-03-08T22:07:24Z

‎Tutorial 25 - Solution

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‎Tutorial 25 - Bonus

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‎Tutorial 25 - Bonus

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‎Tutorial 25 - Bonus

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‎Tutorial 25 - Bonus

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‎Tutorial 25 - Bonus

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‎Tutorial 25 - Bonus

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‎Tutorial 25 - Bonus

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‎Tutorial 25 - Bonus

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 === [https://youtu.be/Vh2JW5MHJX0 Tutorial 25 - Solution] ===
 <div class="mw-collapsible mw-collapsed"><br />
-* A look at <code>world.step( dt,8,3 );<code> in <Game::UpdateModel()</code> [https://youtu.be/Vh2JW5MHJX0?t=28m39s 28:39]
+* A look at <code>world.step( dt,8,3 );</code> in <code>Game::UpdateModel()</code> [https://youtu.be/Vh2JW5MHJX0?t=28m39s 28:39]
 * Solution to 1st part: destroy boxes of same color when they collide [https://youtu.be/Vh2JW5MHJX0?t=33m50s 33:50]
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 </syntaxhighlight>
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      f();
 </syntaxhighlight>
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 * Operator function objects [https://youtu.be/4EZVTNHmojc?t=14m55s 14:55]

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 :* So, say you have a static member function <code>static int DoStatic( int y )</code> inside you Foo class:
 ::<syntaxhighlight lang="cpp" line>
-     int(*pStaticFunc)(int) = &Foo::DoStatic;
+     int(*pStaticFunc)(int) = &Foo::DoStatic; // & is optional here
-     std::cout << pStaticFunc(2);
+     std::cout << pStaticFunc(2); // same as:
 </syntaxhighlight>
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 * Making a function pointer to a static member function [https://youtu.be/4EZVTNHmojc?t=16m30s 16:30]
 * WORK-IN-PROGRESS
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 :* Examples: <code>equal_to</code>, <code>modulus</code>, etc.
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-* The main takeaway: use std::function to make a container that can hold multiple Lambdas.
+* Making a function pointer to a static member function [https://youtu.be/4EZVTNHmojc?t=16m30s 16:30]
 * WORK-IN-PROGRESS
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      g(10); // returns 25
 </syntaxhighlight>
-:* Or, to bind a call to a member function of a class Foo (myfoo is an instance):
+:* Or, to bind a call to a member function of an objeect of class Foo with a Lambda (myfoo is an instance):
 ::<syntaxhighlight lang="cpp" line>
      std::function<void()> f;

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 :* Works as a sort of adaptor for functions; it allows you to bind values to input parameters
-:* For instance say you have some free functino <code>int Foo(int x)</code>
+:* For instance say you have some free function <code>int Foo(int x)</code>
 :* <code>std::bind(Foo,69)</code> defines a new function that calls <code>Foo</code> with the value 69. That new function will now take zero parameters: it essentially changes the signature
 :* Useful if you want to map functors that have more input parameters than your map definition; we can adapt a function that normally would not fit in our function containers so that it fits