Vertical Platformer Game Tutorial with JavaScript and HTML Canvas
This course was made possible thanks to Hostinger (a really great hosting service). Save up to 91% of by using the discount code CHRISCOURSES on checkout at www.hostinger.com/chriscourses
Demo: chriscourses.xyz/
Game assets: drive.google.com/drive/folder...
GitHub source code: github.com/chriscourses/verti...
Tiled map editor: www.mapeditor.org/
Warrior Art by Luiz Melo: luizmelo.itch.io/medieval-kin...
Background Art by Trixie: trixelized.itch.io/starstring...
0:00 Project summary
0:58 Project setup
8:55 Domain setup
16:15 Gravity
33:35 Player movement
42:50 Background sprite
57:22 Collision blocks
1:29:54 Collision detection
1:51:31 Sprite animation
2:16:19 Hitbox implementation
2:32:09 Sprite swapping
2:56:33 Platform jumping
3:11:27 Horizontal camera panning
3:31:13 Vertical camera panning
3:41:06 Launch final product to Hostinger
In regards to having your game run on a live URL, I personally believe Hostinger is the the best shared hosting solution you can find at the moment-it's much simpler to set up than other solutions like GoDaddy and Bluehost (I've used both of these plenty of times throughout my 10 year development career), and the overall interface is cleaner too. This is the only video of mine where you can get a deal with them right now, so for a discounted rate, you can use www.hostinger.com/chriscourses and the coupon code CHRISCOURSES
Something cool to add would be a platformCollision viewer. PlatformCollision being an array. With mouse movement and determine size of array element its pretty easy to track where the mouse is in terms of the map. Then just change right element index on click to 202 values. Maybe something to add in future? :)
Please man make map in game that tells you were are you
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Bro i keep falling asleep and always get these multiple hour long videos of creating games
actually me
On god!
This is my second time
The same, when i wake up i see that YT algorithm gave me vids that i don't watch like programming tutorials.
I’ve been falling asleep to YT the last couple days and every morning when I wake up it’s always on this specific video
I woke up here again!
edit: So you people know - this is the only yt channel with 0 - 100 tutorials on this subject and without clowning, with some tolerable product placement and with professional content and host. Better to download so it never get lost.
“Without product placement”? LOL
@@ThomasGiles LOL - don't watch it then
@@micemincer simply correct your statement since it's not true... why so salty?
@@oliveryt7168 corrected
@@micemincer oof the salt
I appreciate the production quality of these videos.
It's surreal gaining interest in web game development and seeing your own stuff pop up. Thank you for using my tileset!! I never expected people to like it all that much, I mocked it up in a few days '^^
Awesome, definitely one of the best looking tile sets I found on itch.io, thank you for making it available for use!
You're stuff is amazing! Very informative. Also, could you tell about how you would go around making a replay system for a game?
Your tutorials are so detailed and easy to understand. I appreciate your work on these videos !
dude thank you so much for this tutorial, I came from c/c++ to java script, and I was hating it like crazy, because I had no main function and while loop, and the for loops will crash on my side constantly, the way you are explaining java script makes a lot of sense, thank you!
Seriously the quality of your videos are so good! Story-telling is perfect.
omg 1 minute in and already know this makes for a great weekend project thanks!
Excellent OOP principles in a fun and practical way! Thank you! 👏👏
I am loving your clear explanations and how you go through the code. It is very fun to learn like this! Keep it up!
Hello, fantastic class! I'm really enjoying it! I have a question. Once I complete the entire project, I'd like to replace the warrior sprite with one I discovered, but it has a different height. Is there a method to modify the crop box in order to scale any sprite height to a specific size for the player sprite? This way, I can easily switch sprites without concerning myself with their actual dimensions.
I'm enjoying this course a lot and I can't wait for the next steps. I'm trying to use classic sprites in your development, but when I dowload a sprite sheet, animations frames are not the same width. My question is: should I adapt development to get position, width and height for every frame or preprocess sprite sheets?
Pro tip: In Sublime, you can save the file name directly if you write it on the first line, and press Ctrl/Cmd + S and Enter/Return. I always do Ctrl + N , write the file name in the first line of the file, Ctrl + S, Enter, Ctrl + A, and start typing whatever.
Pro tip: Use VSC instead of sublime ;D
Chris, the effort, time and love you put into your tutorials is VERY MUCH appreciated. Words can hardly express how much I appreciate what you are publishing here on this channel. The code is easy to read and easy to follow along. For me as a former C# developer (about 12 years ago, back in the days) this is very helpful. I wanted to write a ToDo-List app using HTML and JavaScript. Then I stumbled upon your KZhead channel, now I seriosly need to create a 2d platformer :). After I am done with this course here I will definitely check out the premium stuff on your homepage
What tool do you use to draw arrows and lines on the screen when demonstrating and explaining?
It Tooks me 2 days to understand and built this project by your video very nice video and explanation keep growing may your channel get a million subscriber .
great work man!
This is some amazing stuff. You got a new sub! also can i ask for something? Can you provide a tutorial on how to animate a character with just body parts and not a sprite sheet? If that is too much in vanilla maybe create a bone animation in spine or something and implement that in a game. Really can't find much material on that. Thank you!
Fantastic and professional video, thank you.
So far this is the only proper Javascript game tutorial I have ever seen👆👍 👍👍
Chris, can you create a simple 3D game using three.js?
it gonna be awesome
Have you heard of 'Sougen'?
@@shazam314 it's beatifull
me too, hope Chris move to game 3D with threejs
@@shazam314 sougen on deez balls?
i dont know how i got here, i dont know how i got 11 minutes in with no fucking clue that i was even watching this, but i feel marginally smarter, so thank you
Nice one Chris!
@Chris Courses @3:08:25 your method to fix this is one way to fix it, but a better way to fix it (especially in very fast simulations) is to untie your update loop from your render loop. Using this will make you able to set your velocities essentially infinitely fast while still updating in between the position based upon delta time. It does make physics much more cumbersome to deal with in games, but it also preserves things like a velocity going so fast that it can warp through collision detections. It will also make physics much more predictable in that it doesn't matter what speed the RAF is firing, the player jumping will remain consistent in rising and falling. Here is a boilerplate I use to achieve this, however any value being modified in this.update needs to be multiplied by that dt argument to simulate the "in between phases" that aren't going to be drawn on screen. Think of them as intermediate updates between render frames. I included a dumbed down version of an enemy class to show how it can be used. class Enemy { constructor(args) { //whatever } update(dt) { //example of how to use delta time this.x += this.vel * dt } render(ctx) { //etc } } class Game { constructor(){ const canvas = document.createElement('canvas') document.appendChild(canvas) this.ctx = canvas.getContext('2d') this.dt = 1/60 this.last_time = 0 this.accumulated_time = 0 this.entities = [] this.entities.push(new Enemy(args)) } tick(time){ this.accumulated_time += (time - this.last_time) / 1000 //if a user leaves the tab. RAF will stop firing, however the following while loop condition could get stuck otherwise due to time still increasing. this is a stop limit in those cases: if (this.accumulated_time > 200) this.accumulated_time = 200 while (this.accumulated_time > this.dt){ this.entities.forEach(e => e.update(this.dt)) this.accumulated_time -= this.dt } this.entities.forEach(e => e.render(this.ctx)) this.last_time = time //mock pretending if client got 5fps behavior //setTimeout(this.tick.bind(this), 1000/5, performance.now()) requestAnimationFrame(this.tick.bind(this)) } }
I had to research a lot on this and should probably give credit to Glenn Fiedler "Fix Your Timestep" article he wrote a few years back. He wrote his in java and I tailored it for JS in my example, but it works pretty solidly even with very fast moving objects and collisions.
Your channel is heaven to me.
Thanks for the great content. 1 Que how much it take for u to create video this long?
so awesome... man I wish I knew this like 30 years ago
Hi Chris, I used the platformer logic you taught us to create an adventure game, using panning and a camera box. however, the panning method you taught us seems very buggy. sometimes it works properly and the player can pan in all four directions north, south, east, and west. but sometimes the player doesn't pan at all. Can you help me to solve this problem? I would really appreciate it thank you.
Hi Chris, i appreciate your tutorials, its possible to make a diagonal walk plataform ? like > " / ", move like sonic game.
Thanks, the tutorial you made was really helpful chris! by any chance do you plan to make a video tutorial on making a simulator game like stardew valley in the future?
hey Chris , i made it thanks for course!
Hi Chris, great work! Will you continue this tutorial and will it be part of the premium section and uploaded on your website? Can't find the course there yet ;)
Haven't decided just yet, have to finish off some of the other courses first like Pacman, Pokemon, and Fighting Game. But can definitely add it to the site if you'd like to view there instead, just let me know 🙏
@@ChrisCourses Sounds Great! I would love to See this course also in your Website. I‘am currently doing the Space invaders tutorial and have just finished adding Sound effects 🔥👍🏻
@@gflaap ok great! I'll upload those today for ya
@@ChrisCourses Great, really appreciate. Best regards from Germany ✌🏼
This is great! Thanks!
This is awesome....it would be great if it had more levels and other great features....I just dockerized it!
amazing content! thanks
Hi, Great work! what is the name of the app for the todo list? Thanks.
Really great tutorial! And I think this changes I made are a fix for 2 bugs at once: teleporting to the up platform and when falling fast go through it. I set a max gravity value (which even we irl have) of 7. So it stops accelerating. I added 3 to the hitbox height when cauculating if there was a collision in a platform, so it detects the collision a little before it occurs so it have more time to react, so the risk of the oine player frame beeing before and the other after the collision box is now gone. And added 1 to the platform collision box height just to make sure. And as the collision box of the player goes a little more down than the player, the 'teleportation' to the up platform when it shouldnt is also gone. :) There are any problems related to this solution?
I downloaded this video cause this kind of brilliant shouldn't be lost
i love your ideas
chris your videos is so much clear and smooth with no complicated code thank u from bottom of my heart my young brother learn from u and he ststed creating his dream game
wow awesome, Thanks
Very nice tutorial! 🙏
I love these videos, I do. But I am getting g sick and tired of waking up to them
isn't it better to create the "collision blocks" in tiled using "Object Layers"?
Simply grateful for this great tutorial and all your background work to complete it and share it.
For the gravity/velocity issue, isn;t it better to just cap the max-speed ? Since that's also how RL works. You cannot build momentum indefinitely. And also you would not like the game visuals to move faster than intended.
Really good course do you know of a way to make the pixel look crisp
Hey so im following your content and was doing well up to 51 minutes with tiled. I downloaded Tiled and added the picture. but when I click export as, it doesnt give me the option to grab javascript files. Any suggestions ? I really wanted to complete this project
i already have no experience with tiled, so I skipped that part by copying collisionBlock and platformCollisionBlock array from data.js file in the linked repo file. I finished the tutorial that way. You can alway improve the process later
it looks so cool wowo
one other question was why loop in the gravity collision detection example? Couldn't you say, "If the bottom of the player would be below the bottom of the canvas, set their position to be at the bottom"? like if they were going to fall 1.5 pixels, but can't, fall the remaining amount then stop
Amazing :D
I fell asleep and woke to this
chris is one of the best coder🤩🤩
Thanks a lot for the video
Thank you for this amazing tutorial!!! Is anyone have issues with the sprite onload part? Iv been stuck on it for days and cant figure out why the sprite isnt colliding after removing the declared width and height from the player class and using the onload function in the sprite class instead. Would appreciate any help and thank you!
When using requestAnimationFrame() we don't need use the delta time, since requiestAnimationFrame is based on the displlay refresh rate right? So there is not problems whith the game speed being different on a player at 60fps and other 144fps?
Díky!
Great work chris! Would you consider doing a super auto pets clone? Much love :)
Hi, i like your method to teach, thanks very much for what u doing. I have a question, why u use javascript not unity ??
Hi Chris, very nice work, but I am curious, have you managed to monitize your web games in any way? Are web games still a feasible business in 2023?
I really want to buy your courses, but I can't listen to English well. So I'm really looking forward to this feature. I really hope you'll look into this. Thank you!
Hi Chris. I love your videos. I got to 2:30 : 55 and my guy teleports up ontop of the red ledge instead of stopping at the red collision blocks at the left of the screen. Any ideas why that might happen ?
Sir, can you make a video or tell me which programming books you prefer to learn js as a beginner like me.
Which theme are you using??
thank you bro
What does the code look like for the Screen moving up or down in relation to the character (main Object),So when the Character falls,the background moves up And when the Character moves /jumps up the Background moves down
How does he draw the diagrams on screen ?
i have a problem: x postion change going smooth, but y changed abruptly, it just teleport player when jump, for example
Hey Chris , can i ask u why u don't use three js instead ?
Hi Chris,how do you make money through game development,and is javascript great for that tacks because most people don't play game online anymore
Just a small question: why didn't u use event emitter(subscription) model but all the time add different action to the different part of script(just a newcomer in web games that's why asking for)?
i think the author went with the simplicity, thought a lot of things could be improved
Its nice but the map is limited and everytime the blocks are in the same position how i can change it ? I want to create endless map to the up and blocks randomly located
When the guy is running to the left his legs are moving clockwise, backwards compared to the direction he is going. Looks like Michael Jackson moon walk :-) You probably need to iterate the animation images in reversed order for this case. Great quality tutorial, BTW. Thanks.
Can u make button controller?
nice tutorial ! maybe it would be better to use State pattern for Sprite Swapping ?
Amazing...
Nice One !
Hello, just finished coding this and it worked. I was wondering if you could do a Yugioh type game next
hola, se supone que camera es como todo la vision del mapa, mientra sque camerabox es la de vision del jugador? se puede entender asi?
I LOVE THIS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
You can Jump infinitely in the Demo linked. Feature?
Feature to exhibit vertical scroll better Add if (player.velocity.y === 0) { player.velocity.y = -10 } to your jump event listener to prevent multi-jumps
@@ChrisCourses Thanks! I want to dive in on this one and wanted to make sure the result was close to what I was looking for. I can't wait to follow along and build my version of this with your tutorial/knowledge!
If you skip the domain part of this, can it still work, and if I make my own website, can I use these same steps to put it onto my own website?
Indeed, you can still use the same code on any hosting provider
@@ChrisCourses okay thanks
from extends Sprite I refresh and get black screen???
Hi Chris! Can you make the PixiJS Game dev tutorial???
Useful timestamps: 15:00 - how to edit/update your gaming website
Can Hostinger host nodejs web sites? I write games that use nodejs and code running in nodejs for saving game data.
Why don't you just flip you spring using CTX.transform, instead of using another sprite?
Hi Chris would you please create javascript course
I am missing the part where I install the programming tools? I am using java on visual studio code, what am I missing?
You won't be using java on this code.
@@kevingordon1312 yeah, its javascript. but I am still missing something. I tried downloading the html extension for visual studio code, but still dosent real work. I'm not sure whats wrong.
@@TrederAlmightyRight click the html file from within VS Code and in the dropdown menu select open with ‘Live Server’. You can also click‘ Go Live’ in the lower righthand corner of VS Code…that will open the ‘Live Server’ It could also be that you didn’t reference your JavaScript file in the html file?
Hi Chris! You are amazing! I followed your Game Courses and they fill me with joy. Thank you for the game assets and incredible explanations. I wanted to add something to the project, I wanted to start first with the "Attack" feature so I tried to add a new event for the key "X" to switch animation, but in the game assets there are 3 animations for attack and they load too fast or too slow. anyway I know something I am doing is wrong. Can some help me fix this issues? [keydown event] switch(event.key) { .... case 'x': keys.x.pressed = true; break; ..... } animations: { ..... Attack: { imageSrc: './img/warrior/Attack1.png', frameRate: 4, frameBuffer: 3 }, ...... }; if (keys.x.pressed) { player.switchSprite('Attack'); } else { player.switchSprite('Idle'); }
can someone send me the tiled file (not the software but the maps)
Unfortunately the website is down.
If his videos are this level quality, i wonder his course...
Sir can you make more game app using javascript
which code editor have you used?
Sublime
how do you add enemies please
the same way you add the platforms, push into array a constructor
three js game tutorial plz