Beginner C++ Game Programming Tutorial 8

We make our first game. So goddamn sweet. Not shitty at all.

Concepts Taught

• += and -= operators
• Writing code in a constructor
• #include <header>
• Using std::mt19973 and std::uniform_int_distribution<int> to generate random numbers

Errata

At 10:50 in the video, there is a note saying that isEaten = IsColliding( ... ); would have also been a valid approach, but this is incorrect. With direct assignment, once the condition becomes false, the isEaten flag gets reset (which is not the desired behavior). With the if statement, once the flag is set it remains true regardless of what IsColliding( ... ) returns on subsequent frames.

Video Timestamp Index

• Intro 0:00
• Basic game plan 0:30
• Setting up member variables for entities: dude and poo 0:50
• Dude and poo graphics 2:20
• Creating Draw functions for Dude and Poo 4:08
• Quick note on sprite coordinate origins 5:20
• Screen clamping functions 6:20
• Movement code for Dude 8:09
• Collision test code 9:03
• Win condition and Gameover screen 11:54
• Title Screen 13:20
• Randomizing poo positions 15:07
• A little bit on constructors 16:11
• Creating random number generator object 16:50
• Specifying a range for random numbers 18:23
• Random device: The importance of a seed 20:55
• Why we don't use random device as a random number generator 22:09
• Summing up what we have learned 23:04
• An important message from the power rangers 23:50
• Homework 26:33

Homework

Make the poos move around the screen and rebound when they hit the edges.

The solution is given in this video.

Image to PutPixel Tools

• fukbmp - a barebones tool by Chili
• Custom Sprites 1.5 - a nicer tool by LuX
• Tristan's PutPixel Puker - another sexy tool by Tristan

Downloads

• Framework Download
• PutPixel Sprites
• Tutorial 8 Code
• Tutorial 8 Homework Solution Code

See also

• Planet Chili Patreon
• Next in series (Tutorial 9)
• Beginner C++ Game Programming Series