Coding Platformer Enemies | 11. Scratch Platformer Tutorial

Coding Platformer Enemies made easy. In this tutorial we show how to add multiple patrolling, chomping enemies to our Scratch Game.
Jump on their heads to squash them and continue on your quest!
We also add safe zones to allow for guided patrolling, and learn about the danger of placing enemies too near the edge of a scene where the player might unfairly lose a life.
My tutorials are for all budding game & software developers using Code Blocks. Scratch On guys!
🐱 Scratch Studio (post project here) - scratch.mit.edu/studios/30847631/
🔥 Wall Jumping Bug Fix - kzbin.info/www/bejne/lYCWhJVmYtx8rq8
👀 Next Episode #12 - kzbin.info/www/bejne/hqbUqn2FiZ1modE
👀 First Episode - kzbin.info/www/bejne/emKZmYekeayqm9E
👀 Playlist - kzbin.info/aero/PLy4zsTUHwGJIATydhFeZa5pspLZR7yE__
🚀 *Boost Your Creativity with Griffpatch*
The Griffpatch Academy will take you from "Gamer to Game Creator"
Learn more at 👉 griffpatch.academy 👈
😺 Scratch was developed by the Lifelong Kindergarten Group at the MIT Media Lab. See scratch.mit.edu
❤️ Scratch Addons - scratchaddons.com/
📹 Video Editing Software - techsmith.z6rjha.net/5bajbo
--------------Video Chapters--------------
0:00 Intro
0:44 Red Enemy
3:19 Positioning and Spawning Enemy Clones
6:05 De-spawning Enemy Clones
7:36 Enemy Gravity - Move Down
9:59 Enemy Movement - Left and Right
11:38 Enemies on slopes
13:48 Animation
16:48 Enemy Collisions - Lose a Life
19:37 Jump on an Enemies Head
22:29 Improved Enemy Spawning
26:37 Safe Zones
29:07 Door problem
31:03 Outro

[@luisjogos821]

This series is helping me out a ton, because I'm making a platformer in Pocket Code,so most things also work on it.

[@namrata.agarwal]

Pocket code is dum

[@RafaelSonicgamer]

​@@namrata.agarwal not that dumb, o tried It before, basically scratch but for apps

[@callmehtheguy]

Cannot believe how far this series has gone. How could someone possibly not subscribe after all this? 3:23 WAIT WHA, the sprite is still named 'sprite1' instead of 'Enemy'!?

[@jameslewis-basson]

ik why sprite1 instead of enemy

[@AngelaGS]

Hahaha:D

[@RadiantSolo123]

LOL🤣🤣🤣

[@pats7081]

agree

[@Hancraft-yj1qt]

true

[@studiodespenates]

I implemented those enemies and they give a really cool touch to the game. Thank you very much. I'm gonna try to handle the player hitbox because the death by ennemies is quite sensitive

[@studiodespenates]

@griffpatch , I tried two ways (that did work) of implementing the use of a hitbox for the player and I need some advice. The first one was to broadcast a new event "Touching Enemy" instead of "lose life" in the "Touching Player" block in the enemy. The Player receives this event, changes costume to the hitbox and deals wether the hitbox really touches the enemy clone and then broadcast lose life or not. As I said, it did work but it seems a bit messy as the check for touching danger happens in the "Tick last" event receiver. I'm afraid this could mess up with the costume change to hitboxes as two different scripts can now change costums to hitbox and check for collision with dangers ans enemies. (I did not mention that I added a hitbox for the "touching danger" in the "tick last" too cause, it was also a little bit sensitive with danger sprite ;-) ) So I tried another solution of having a new "for all sprites" variable named "TOUCHING ENEMY". It is set to 1 by the enemy clone instead of broadcasting "lose life". The player, in the "tick last" event receiver can now check the TOUCHING ENEMY variable value and do the hitbox costume trick in that script. Which keeps the costume hitbox and check for collision with danger and enemy a little more tidy. Then at the end of "tick last" receiver, the variable is set to 0 if the player is not touching an enemy. There might be a better place to reset the variable which I haven't found yet. I'd rather like the second solution with the variable but I'm not sure. Both those implementations involves 2 sprite touching tests (one in the enemy clone, one in the player) which is not very effective. Which solution seems better to you and why? Or am I in the wrong direction? Thanks a lot.

[@vydxz]

I can't believe I've actually found your channel I've been playing your scratch games for like 3 years they're so fun!

[@ericdelangle4821]

thx for getting me good games🤗

[@funraven659]

LOVE WATCHING YOUR VIDS WHEN I HAVE FREE TIME, though it would be fun to see him use a Boolean in a custom block for the first Time (yes, I know he used a Boolean in custom blocks OFF camera, but I want to see do it ON camera) Still, keep up the awesome work

[@kgratia4748]

The rarest sight ever. So rare, not even I recall using it, haha.

[@amateurishanimation]

Finally! I wanted a tutorial on enemies.

[@NovaWolf_]

Your scratch skills never fail to amaze me, how you can figure out all these complicated things like pathfinding and even physics inside a scratch engine is beyond me, amazing work keep it up!

[@aleksandrakandelaki7956]

No he always messes up, he is the worst

[@larrywheeler5076]

@@aleksandrakandelaki7956 Thats not very nice

[@Red-cr3yz]

@@aleksandrakandelaki7956 not really

[@ChickenNose123]

I added Checkpoints all by myself! Griffpatch inspired me to not be afraid of platformers! Thanks!

[@smth35]

You could add another way to defeat enemies in a future tutorial. Such as.. a sword! Or maybe a shooting weapon. (Because that is what i'm dealing with at the moment) Another thing you can add is enemies with multiple lives (Not exactly like a Paragoomba for example, but with health that is (in)visible), or even a boss!

[@rodgeangeroancelso6109]

I think a boss would be fine for my project

[@smth35]

@@rodgeangeroancelso6109 yeah, i have already developed a shooting at enemies mechanic. I might also add metal body/helmet to enemies. Also, multiple health can be done by setting a local variable to a number at the start of "when start as clone", and change health by -1 when normally the enemy should be squashed. And squash the enemy if enemy hp is below 1 after changing the hp.

[@smth35]

A custom moveset can be made in the enemy loop

[@_gherry]

yes, i remember mario having a gun!

[@don_gato1774]

@@coldintakevideos RELAX BRO

[@cakesrus3852]

Thank you thank you!. I waited for a long time for this video . This is a very exciting video 🐱.

[@deskasandreas4504]

I was waiting for that episode more than Santa's gifts Thank you Griffpatch for making it so simple to understand that's the most important thing. Till next episode 😉

[@Scratcher_No-1]

How did you wrote that emojie?

[@gloz6662]

@@Scratcher_No-1 he is sponsor

[@deskasandreas4504]

@@Scratcher_No-1 Yeah I'm a sponsor

[@Scratcher_No-1]

@@coldintakevideos No!

[@deskasandreas4504]

@@coldintakevideos How old are you mr Roblox? LOL

[@antoniasage602]

21:53 ( look at the “Ok” button when the Player - Bounce is right about to be added.) Thx for the tutorials!

[@ThePantaloon_]

I honestly can't believe that this series got so far. Love you Griffpatch

[@quickshark9536]

19:46 People actually use this in speedruns for the original Super Mario Bros. They jump from under and avoid the hitbox and they fall for a few frames and defeat it when they touch the hitbox. Edit: Congrats on 100k!

[@levlev4048]

I was waiting for this tutorial for years, and finally got it. Thanks griffpatch

[@harrisongreen1892]

I stopped making scratch and moved to python and unity projects but still watch these.

[@griffpatch]

Awesome... It's all the same at its roots... :)

[@danielayeniscratchtutorial4350]

Could you please make one that keeps the enemy squished even when you return to that scene. TKS!

[@soapfaces]

I know how to do that. Use a similar trick to the one for keeping collectables in the same place on a different screen (the null room)

[@vihaansingla7514]

@@soapfaces daa

[@soapfaces]

@@coldintakevideos bro what are you on about

[@j10paul]

@@coldintakevideos Scratch is coding, it's just simpler, and also, that comment is off topic.

[@juansebastian7723]

@@coldintakevideos don’t care about him

[@ignaciohdi]

100k finally! Congratulations, your tutorials are great!

[@happyretirementmsvacca]

two suggestions: 1. Instead of a 1 + floor of frame mod 4, could we have done a join Red and floor of frame mod 5? 2. Instead of a change speed y by -1, should we have used the already existing gravity variable?

[@bilkmucket1470]

First one goes through all 5 costumes so it doesnt work

[@jameslewis-basson]

I love it when griffpatch is funny like at 8:49 there was a lemon on top of the custom block

[@cubic_]

I want to know, how do you make multiple enemy types, because I want to have more enemies instead of the same enemy used over and over.

[@MF5000]

i know how to make different enemy types.

[@xoS1d]

Nice! Loving all of these episodes!

[@Megabyte1]

Griffpatch you should make a shop where you can buy things with apples, like for example a key so that the players can't just skip a ton of the map

[@Quack12399]

That is what I am doing

[@pe_games]

28:00 Griffpath you are so organized! My scripts are so large 🤣🤣🤣

[@cactithegreat4871]

I’ve been waiting for this for so long, I decided to create a combat mode for it!

[@theobaldtiu]

Real cool!

[@donkkonk5293]

Wow! So awesome! I was waiting for this.

[@silvertakana3932]

It would be cool if you make the background parallax instead of staying still! It would create some nice depth to it!

[@griffpatch]

On scrolling games that's cool, but not quite as good on a non scrolling game like this

[@silvertakana3932]

@@griffpatch some games do that anyway. but yea, sometimes, it can drive the player dizzy!

[@uhhemrxcc]

@@griffpatch Happy New Year's Eve!

[@skeletonizermal]

Sadly the scene-based nature of this project makes it really hard to do, if not impossible.

[@awesomesauce0742]

i can help you rephrase that: Make the whole level slightly move when you move so it looks like a somewhat 3d environment

[@cubee4108]

And, quick comment, you can actually not use 4th sprite in 2:48, but rather just cycle back to 2nd sprite after 3rd one is played out.

[@macronas1239]

Griffpatch, do you know how to separate "a" and "A" in Scratch? I need it for making a keyboard in Scratch.

[@eforluc]

Hmmm maybe an if costume number = (insert number) but idk I’m not griffpatch, also I made a keyboard thing aswell

[@macronas1239]

@@eforluc it probably doesn't work...

[@bitofbeans]

BOTH OF THESE METHODS CHECK ONE LETTER AT A TIME make one empty costume and then 26 costumes called A,B,C etc switch costume to (empty costume) switch costume to ((letter variable)) if costume is not empty costume it is uppercase, otherwise lowercase ORRRRR if you don’t want to make 27 costumes, you can a make a bit more code, don’t worry it’s a lot easier to make imo make one costume that is empty and one costume named ABCDEF… all the way to Z ( all letters uppercase) then a variable named Characters and set it to A to Z all uppercase again and a variable called String also any counter variable works, like “i” or “counter” now set counter to 1 and string to nothing repeat 26 if letter (counter) of (Characters) = the character you are checking then set string to (string) join (character you are checking) else set string to (string) join (letter (counter) of (Characters) to finish the repeat loop add a change counter by 1 AFTER the repeat loop set costume to empty costume set costume to string if costume is empty costume then it is lowercase, otherwise it’s lowercase hope this helps!!

[@macronas1239]

@@bitofbeans I'm gonna try it!

[@elijahbedinger7951]

Happy 100k subs! What a great start to the new year!

[@FrostleGaming]

Idea 1: add portals that can teleport you through the same scene or difference scene Idea 2: add jump orbs that when you click them and are touching them mid air you jump but if you dont click you go through

[@nikolime_yay]

JOMETREY DASH REFFRENSE!?!?!?!?

[@rleung9463]

Yeah, that's gd

[@meowsername]

Aww man I was hoping for a tile scrolling episode, but this is good too.

[@MotivationUmmah]

TYSM griffpatch you make coding seem so easy. Your work is so underrated you deserve way more subs

[@MamaMoLangNaman20]

Wow my platformer is gonna be great now Thankyou sooo Much Griffpatch!❤❤

[@griffpatch]

Yes it will!!! Woohoo :D

[@MamaMoLangNaman20]

@@griffpatch ☺❤YEP!

[@Waizzzz]

Episode 1: Basic control Episode 20: Cloud multiplayer, score system Episode 25: Exporting game as .exe file and put it on Steam, Google Play and App Store

[@Enderia2]

lol

[@realquemulroy]

Nice.

[@Popcorn-sg2xb]

Yes

[@thatguystar817]

what about enemies with health? how do you code it so that in one room with 2 enemies, killing one enemy in a room doesn't also kill the other one? Thanks!

[@DDP-Gaming]

I can definitely see where the inspiration of the enemies came from Hint : Appel

[@notthatntg]

a a p p p p e e l l

[@ericdelangle4821]

you got it right this remembers me somehow of this custom getting over it

[@mibsmartlearning9621]

he said that at the start

[@Shreyan12345]

he said that

[@ShiftClickLearn]

Ooh, I like the little red chompers! xD

[@villewedenberg2793]

You are an amazing scratcher and makes it easy to code with your awesome youtube videos! Keep it up!

[@aleksandrakandelaki7956]

no

[@WatchThis1_2]

thank you so much for this. this changed my life!🤩🤩🤩

[@vVearon]

we need “How To Think Of Ideas”

[@silvertakana3932]

I love platformer games! Because it's fun for me to compete with my siblings and friends. What a good time it is!

[@heckercat3968]

I can’t explain how great this video is! There are literally no words for it! You are so amazing! Keep up the good work! 🥰

[@Isakube]

Congratulations. You have now explained how great this video is.

[@sheeveman7568]

I have a problem where if a enemy touches the wall or edge it starts moving back and forth rapidly

[@amateurishanimation]

Idea: make an enemy with pathfinding that will actively chase the player

[@zhanghetianytps7541]

nice

[@rodgeangeroancelso6109]

Yea good idea

[@evanlamb1595]

With would be really cool with the maze tutorial!

[@danilopantelic2957]

that is an awsom idea

[@NayanAnimations]

In his game appal (or something) there is that or something similar at least...

[@soursalt698]

i will always remember the day as a kid i went to some place (i dont remember if it was some kind of festival or not) and there were some dudes sitting outside with a laptop, they offered to teach me what scratch is and how to use it for fun, didnt really use scratch after that but always found it cool

[@griffinbrooks6748]

it would be really cool if the enemy sloped similar to how the feet of our player slope to match the ground.

[@darwizzler29]

agreed

[@mrfrog0913]

NEVER GUNNA GIVE YOU UP NEVER GUNNA PUT YOU DOWN!!! (: rick roll

[@filipetrujeira3359]

@@mrfrog0913 *let you down* and it's not "gunna" it's "gonna"

[@griffinbrooks6748]

@@mrfrog0913 NOnoOooOoo please do do this to meeee! what hav i done!

[@sarmisthasahoo423]

@@griffinbrooks6748 Never gonna give u up Never gonna let u down Never gonna run around and desert u

[@Olive621_]

Hope you had a great Christmas griffpatch

[@griffpatch]

Thank you

[@danilopantelic2957]

@@griffpatch and i hope you will have a great time at home

[@nonexistence00]

Finally, enemies! Next might be: jump boosts, more enemy types (bigger enemies or enemies with better AI; possibly bosses), or maybe power ups (1ups and the like)

[@theobaldtiu]

Yeppp

[@worst_120]

@@theobaldtiu and more like portals, potions and more collectable items!!! ^!^

[@McSwee]

@@worst_120 I already added 1ups to my game

[@McSwee]

It's not difficult

[@mibsmartlearning9621]

YESSIR

[@KnightBolt-LBS]

Congratulations with 100k subscribers, griffpatch!

[@aryankhadela9253]

also wanted to say since E3, I appreciate you for making a cat sprite pre-hand for us 😊

[@griffpatch]

My pleasure :)

[@rleung9463]

Hi griffpatch !

[@OP_Sahoo]

sir in my game, when I did the move down code my enemy stays on screen for a bit moment and then it hides please help me out

[@WolfyLionMonster]

I really love platforms and mini games like this, they’re really fun to play

[@Scratcher_No-1]

Exactly!

[@khlobbia]

I hope this tutorial will add more variety because right now it feels like all the platformers are getting very stale and generic

[@rodgeangeroancelso6109]

I agree

[@rodgeangeroancelso6109]

@@khlobbia yea

[@Scratcher_No-1]

@@rodgeangeroancelso6109 same

[@sunsky4288]

Hey, congrats on 100k subs!

[@sunsky4288]

idk why do one has litterally metioned that lol (its a great achievment(i havent even got one subscriber xd))

[@dannrobotdancer]

i know your face now

[@LittleChimp123]

Wdym?

[@Does_not_play_anything999]

his profile dudes or maybe not

[@LittleChimp123]

@@Does_not_play_anything999 scratch academy has a face reveal but this comment was last year so, yeah, it would be from the profile

[@mr.sandman3619]

20:00 whaaaaat??? i've been using scratch for years and i just NOW find out that you can read sprite specific variables on other sprites? that's so usefull!!!

[@MyNameIsKneoReal]

Just Wanna Say Your Vids Are Awesome!

[@occcomic]

Congrats on 100k!

[@shaaravbhatia]

Hi Griffpatch, (This is my second time asking) Just curious to know, do you have any plans for the super mario game?

[@griffpatch]

I do plan to make another episode yes, but I'm not rushing to make it until i have made a few others first.

[@cubee4108]

Hey uuh, quick question, are you planning on making any videos about making a 3d game using pen module?

[@brooklynerickson6603]

Hey how did you set the 22 second world record on Scratch Getting over it if its even you? (if someone just used your name idk). Are you going to be uploading a video about it?

[@temmie5764]

100k congrats!

[@Scratcher_No-1]

Aaaaah! I love all your vedios cuz they're awesome!!

[@CarsonDog8]

I would say Exiting Current Scene instead of about to change scene, does it fit?

[@griffpatch]

Yeah, I should have done that

[@thelegoreaper]

Wow this adds so much more to the platformer! Will yiu do collectable weapons?

[@griffpatch]

I'd have to think about it

[@-tylerrodgers-]

Why?

[@CommanderAka]

Pleasssseee I’m making a ninja game out off this 🥺🥺🥺

[@Twin138956Productions2019]

Happy new year 2022 griffpatch! :D

[@TheAwesomeTortelini]

2 years ago... time flies, huh?

[@AsAwesomeEverything]

How can someone not subscribe ? This is too good to be real!

[@keithboyer2730]

Eewdsdfwgwr 78otv txt b monogamy Ulloa TNT

[@rainavnts8958]

I'm kind of desperate for help on an oddly specific problem I'm having. I can't tell whether it's Scratch glitching or if my code isn't right, but I want to fix it and I don't know who to ask.

[@fridayfunkgaming291offical]

First time watching the best Scratcher YTber other than the scratch team

[@DogeisCut]

I tried to add these into my scrolling game before this tutorial but they keep getting stuck in the ground when the screen scrolls. How do I fix this?

[@Shiverandfears]

@griffpatch I want to ask how do you give the video game a soundtrack while playing?

[@CarsonDog8]

Hey griffpatch, uhh my enemies cannot walk on slopes, but why?

[@fluffygamingsheep]

An episode we have always been waiting for

[@HarpreetKaur-in6em]

Congratulations for 1 lakh subscribers

[@rajanim8389]

I was waiting to squish all those enemies , thanks @Girffpatch for this marvelous gift and wish you a Happy new year ahead.

[@دانیاللامعی]

Hello, it was great But I have a question, if we kill the enemies and go to another part of the game and come back again, the enemies will come to life! How can this problem be solved ??

[@xtenser2633]

OMGG you hit 100K SUBS!!! CONGRATS

[@Jar.Headed]

Ok, this glitch is getting annoying, in my platformer, there is a chance my character loops between two adjacent scenes, this started appearing when I worked on the Collision system in tutorial 7 or 8. Any way to fix this?

[@panpawe5474]

I waited for this episode whole days

[@DanielHCassidy]

so i wanted to try something a little different so instead of jumping on enemies i created a claw variable which sets to 10 when i press b i use the tick - last to count it down to zero so it can be used again to get around touch the enemy i use the invulnerable varible and count is down with the tick last as well. Am i doing this all wrong.

[@griffpatch]

Sounds inventive! Is it working the way you wanted?

[@DanielHCassidy]

Yeah pretty much. I have no nice animation to go along with it. But it was fun while I was test to go around with the claw variable reporting CLAW set to 10. I have a nested if else block in the enemy sprite first if check player and invul is 0 then I have a block to kill enemy. With the else being your player lose life block. The hit enemy sets claw to 0 sets invul to 30 switches costume and then deletes clone. However, what I haven't got is one of your nice frame scripts to make the whole thing look pretty.

[@malygina4449]

Wow, it's already 2 853 watches! Love your videos, Griffpatch! Hope next are power-ups, like Fire Flower or Tanooki suit!

[@Chef_Aaron1]

@griffpatch Whats the difference between the custom blocks and the broadcast messages?

[@Bachtoukbik]

Congrats for 100 K!!

[@Mr.Futures1641]

hello. I already have a speed y. When i add another for the enemy it works. The problem with having two speed y's is i can not squish the enemy. I tried to eliminate 1 but the game glitches. I don't know what to do. your example doesnt show if you already have a speed y variable what to do

[@abeldoesthings873]

Congrats on 100k subs!

[@minegamer1346]

Hello, griffpatch. I have a problem with the player. Every time i press the left or right arrow key, the player keeps on movin until i jump! I cannot find the scripts that control that in the Controls - Left and Right define block, or Start game and Reset and begin level. Please help me, i have a game contest, it's my first, and i want to have a good project.

[@ethanbrayden8941]

when i press the green flag the enemy is gone and won't comeback :(

[@codingwithaditya1290]

You are a awesome Coder I wish that you got all success in life and you hit 10M very Fast 🔥🔥

[@Brodigaming69]

:D

[@Brodigaming69]

i dont follow the tutorials i just watch the videos because i find them intresting

[@YourOrdinaryZohan]

For Some Reason, Every I make making the enemy die, every time i touching by walking keeps killing him. I don't Know Why...

[@tyj90000]

Ayyy, congrats on 100k!

[@RyanCole-x7k]

For some reason my speed y isnt being set to 0, and i cant find the issue. Can you help? Its the players speed y

[@Djjohnson-g5l]

Thank you so much! making my own platformer and had to tweak it a little.........but it worked great!

[@RenardioMFG]

problem, when I added the wait 0.3 seconds block in the if speed y of player is less than -3, the whole game froze for 0.3 seconds instead of switching to the costume squish for 0.3 seconds

[@griffpatch]

Make sure that custom block is not run without screen refresh

[@RenardioMFG]

@@griffpatch thanks

[@PersonDoesStuff]

Hey why is there no lemon above the Move - Down block when i'm creating it. Does anyone know why?

[@griffpatch]

lol

[@studiodespenates]

Here is the strange behaviour I found in this implementation (I'll try to make it as short as I can) : - When an enemy can walk to the edge of the screen (or almost the edge, whatever edge it is) - When the player exits the scene by the opposite edge of the screen to another scene - Sometimes the enemy clones from the previous kills the player as soon as the player enters the new scene (where there is no enemy). It feels like the "exit scene" event receiver where the clones are deleted hasn't finished deleting the clones when the player enters the new scene. I tried to put the broadcast "exit scene" in the first place of the "begin scene #" block but it doesn't change anything. You may find some cleverer way to avoid this but I work around this issue by using the new INVULNURABLE variable, putting it to "1" "begin scene #" block and to "0" at the end of the same block, just before broadcasting the "game loop" event. Thanks

[@griffpatch]

Thanks for reporting that, I'll need to investigate

[@amiriteLMAO]

7:10 appel *seeing his enemy was made by griffpatch* flashback

[@Angry_hamster1]

If say my Enemy, was at the bottom of the screen touching the edge, he would shimmy at the bottom of the screen how should I fix this?

[@griffpatch]

Good insight. It depends what you want your enemy to do... Despawn or turn around!

[@Angry_hamster1]

@@griffpatch But since I wanted it to turn around, he currently shakes non-stop at the bottom of the screen.

[@kol.boss.2431.lil.k]

Hey griffpatch my enemy seems to be hiding when I enter the scene I want it to be in and when it shows nothing happens can I have help

[@anaycoding6594]

How do I make it so that the enemies don't spawn when you have killed them? For example right now if you kill an enemy, go to another scene and then come back, it respawns. I want to have it so that if you kill an enemy and come back to the scene *only the enemy you killed* disappears.

[@wildremiofwater...9086]

I love the scratcharia's that you Made!!