JavaScript Game Tutorial - Advanced Techniques

Make your own 2D adventures with HTML, CSS & plain vanilla JavaScript, no frameworks and no libraries! Today we will apply state design pattern, sprite animation, parallax backgrounds and we will learn how to control FPS with timestamps and delta time. Have fun! :)

❤ Related Links ❤
Download project sprite sheets:
Backgrounds:

⭐️Tutorial Contents ⭐️
00:00 Course overview & final project previews
00:29 Why to use State Design Pattern
00:57 State class
03:10 JavaScript state design pattern explained
12:51 Running state
13:46 Jumping state
15:23 Falling state
17:31 Sprite animation with vanilla JavaScript
18:32 How to control FPS in JavaScript game
24:28 Positioning the player in game world
25:35 Parallax backgrounds

Let's be friends

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#frankslaboratory

[PhorssaOneDev]

Hi Frank, I completed this part a few days ago...thank you!Very informative. I am HOOKED! 😀

[carltone]

Frank, love the code refinements, I always learn something new from your excellent tutorials. Thanks for sharing your knowledge!

[phoenixxofficial]

A lot of great information, wonderfully explained with useful on screen notes to help with understanding - good job as always Frank! (:

[javifontalva]

This is my next challenge. Bring it on!

[christopherc]

This channel is a great find. Thank you for these excellent tutorials. Wishing you great success.

[techtime]

Dude I started this series when I started learning js but i didnt understand anything now i am much advanced and I restarted this, dude the way you explain and the easy way you code i love that

[nicklansbury]

Another masterpiece. Thanks Frank. Enjoy your weekend.

[palmpixiplus]

This finally made Enums make so much sense to me. Thank you so very much!!!!

[TheLegendOfNiko]

Thank you so much mate. I’ve been looking for a way to create this for months !!

[souerico]

Just discovered the channel! It is amazing!I'm learning a lot! Thank you so much!

[marcus_lyn]

random small improvement I found: this movement code for the background causes a small stutter when we reset the image back to x=0, this is because the game speed pushes x by 3 and sometimes pushes x past the ultimate width, so when we get set back to 0 you can see the stutter, we also did not account for the gamespeed in this scenario.

To fix this, in the update method for Layer class, I instead increment x by the width of the background image, and I also subtract the game speed to keep moving seamlessly. code:

if (this.x < -this.width) this.x += this.width -

[barryglibb]

Loving this series so far, and indeed all your videos having recently discovered your channel. I'm a JS developer of business applications with some 15 years experience and it's nice to be able to follow along with your well-written and explained code to use my skills in a different way. Great job! +1 sub, +1 notification from me.

[DannyHille]

Tip: when using "Enum types" like states, you can use Objet.freeze to ensure the values doesn't change: like this: const states = Object.freeze({SITTING:0, RUNNING:1});

[sertansantos]

First, thanks for all the effort Frank

[Avinashkumar-zzqi]

Nice video sir. Thank you for the tutorials.

[scottatkinson]

Hi Frank, I'm loving your tutorial and learning so much. You started mobile controls but how do you add different states on mobile.

[dinhson]

hi teacher, im doing same with you but my player not moving when he standing ?? maybe my chrome have problem??

[Radu]

Thanks! I'll need to use that deltaTime technique at some point. Just one question: doesn't this make it refresh slower than the frameInterval? (because you use It would be nice to see a plot of the this.frameTimer values as they accumulate over time. I assume the average value to be something like (frameInterval+deltaTime)/2.

[programer]

hello teacher, the tutorial was very good, the game is beautiful🧐

[aitorplaza]

Hi Frank,

Awesome course, i'm followig it and I'm enjoying it very much.

I just have one question, why do we need to set up a server? I've tried launching the game without the server, just opening the index.html file and it does not work. I'll thank you if you can clearify this.