GameMaker Studio 2 - How To Transition Rooms Beginner Tutorial 

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You must stop the ability to move once you begin to warp, otherwise your player will execute their last movement code, something like x += 5, and it will warp back to its previous x. At least that’s probably what it is.

2 things 1: THANK YOU! for actually responding to me about the problem! means a lot to me, and 2: now that i think about that, that actually does make sense, ill look into it more and see if theres something i could write up to pause the player's input for a sec while warping, once again thank you!

i think i figured it out lol turns out if your player is set to solid from the little tick Box, it breaks the whole process, but if you don't tick solid, it works perfectly fine! once again thank you so much!

@@johnjohnson2516 thank god for this comment i was going crazy thinking i mistyped something xD

Nice! Best of luck on your jam.

I had the same problem and apparently it doesn't teleport the player if solid is on

Yeah. Objects off screen will still run their code and detect collisions.

@@LetsLearnThisTogether thanks!

Is your character set to be persistent? If not, they won’t move between rooms.

Yeah, I'm having the same issue. I'll reply if I figure out the fix. Do u have any ideas?

I had the same problem and apparently it doesn't teleport the player if solid is on

Why can't you use restart room? What happens? What doesn't happen?

@@LetsLearnThisTogether my player just falls and stay falling, he don't restart the room, i'm using a object with collision with restart room, but when i use Persistent in player my character stay falling but when i'm not using, the room resets normally

I suppose that makes sense. Because it's persistent it wouldn't change with that function. You'll need to manually reset the player then, by moving their x and y to the start location at the same time you call room_restart.

Not being able to save sounds like a bug. Try closing and reopening GameMaker. If that doesn’t work, try saving your project after doing anything else. If that still fails uninstall and reinstall.

I'm having the same problem, have you found a solution?

My suggestion is to use the debugger when you change rooms and follow your code. Something is moving you, but I can’t say what without seeing your project.

+NJ4K Sure. Email it to me at beyondusgames@gmail.com. Export it from within the game and send it my way

Thankyou

Well, they do work now, but my character's fixed rotation turns off

Pressed? Like your screen distorts? That’s probably because you’ve got a camera and views in your rooms, and they’re not the same dimensions. When you use a camera, you’ve got to make sure your dimensions are in line with each other.

Just use an alarm, set the alarm value and call it when colliding.

Check out the updated version. I try to address all the possible mistakes you can make.

That is odd... Can you export your project and email it to me at beyondusgames@gmail.com? I'll look at it.

@@LetsLearnThisTogether hello can you please explain I have the same issue

For the second problem it is possible the background is missing

It is true, it's not necessary if the Sprite looks the same left and right, like here. However, if the character had a weapon on one side or something else was different on one side, you would want different sprites for left and right.

That means you've got it spelled differently somehow and aren't referencing it more than one time, which you probably need to be doing. So double check your spelling on all of it.

@@LetsLearnThisTogether it does not work

If you export your project and email it to me, or share the link with me, I’ll take a look. aaron@letslearnthistogether.com

The code for GML hasn’t changed, so it will still work now. Double check where you’re going, and that you’re not landing on the other warp to return yourself to the first room

@@LetsLearnThisTogether I manage to make it work by unchecking the ''solid'' mark on my player sprite object. Thanks for the reply tho! I'll make sure to check more of your videos since you reply to the videos no matter how old they are! ^.^

Never mind I figured out. Turned out my warp cords were off by a few points. Whoopsies.

Hmm, odd. Do you have some collision checking in there somewhere? If you can access the first warp, then it is probably something else in your game preventing you from reaching the second.

Persistence doesn’t affect x and y, it must be something else. It may be that you’re setting x and y when the player enters any room, or something else is moving them back. Put a breakpoint on when the player moves room and go through your code, you’ll find something that moves them. Or perhaps you have another player object already in that new room

@@LetsLearnThisTogether I think I figured it out. I believe my order was messed up. I now have an alarm trigger when the player hits the collider, a var stops the player from being able to move, the screen fades to black, sets the coords, swaps the room, black fades away and then the playermove var resets. Pretty seamlessly I may add! Great tutorial and honestly crazy that you respond to comments. Thank you!

It sounds like what you want is a cutscene, where things happen on their own, or in a specific sequence you've laid out. The best way to do this is up for debate, but a simple way is to make a variable and set it to 0 (call it whatever), and in your step event have a series of switch statements or ifs, that do something at each increase of the variable. Such as: if (variable == 0) { //code to create a black rectangle over the screen ++variable } if(variable == 1) { ///draw text to the screen for a while, when done, increase variable again. } And so on and so forth.

If it freezes, do you have to force close the application (just pressing x doesn’t work)? If so, you’re in an endless loop somehow. This could be by an actual while loop, or by warping your one room and immediately warping back to another, and doing this endlessly. Try starting by just having a warp in 1 room to another, without anything in that new room.

You have to make sure the player isnt moving. // Check for collision with o_warp if (place_meeting(x + hspeed, y, o_warp)) || (place_meeting(x, y + vspeed, o_warp)) { // If colliding with o_warp, stop movement hspeed = 0; vspeed = 0; } the place_meeting will stop the player movement coordinates and it should teleport them to targetX and targetY now.

If you want, you can send me your project and I’ll take a look at it. Email me at aaron@letslearnthistogether.com

@@LetsLearnThisTogether Phew! Haha, thank you for the offer. I haven't figured out why your code doesn't work, so I have instead created more complicated system xDD I've created a persistent object that checks for the player: //-----Check for player if (instance_exists(obj_player)) { instance_destroy(obj_player) instance_create_depth(255, 45, 99, obj_player) } else if (!instance_exists(obj_player)) { instance_create_depth(255, 465, 99, obj_player) } //if instance_exists(obj) then delete instance and create new one //else !instance_exists(obj) then just create new one Player is not persistent. So, since the player doesn't exist in the second room, when he enters the second room, it spawns him at the coordinates I want him to spawn. And, since he already exists in the first room, when he comes back, it deletes him and spawns him at different coordinates. It works with what I want to do. Just a heads up for anyone who might be reading this. If you have a third room, fourth room, etc., it will always spawn the player at the same X and Y coordinates as in room 2. So, this only works if you have two rooms. However, you might be able to create another object that destroys the player check object and overrides it with its code. :D

@@LetsLearnThisTogether this is my same issue with mine. I thought I was going crazy, but then I downloaded your project and it happens there also. I'm using GMS2 and I think the version of GM is the issue. 😞

I freaking got it. Although I saw your comment that a new version of this tutorial was available I noticed that the warp object had to be persistent for the coordinates to be set to the player object. Thanks a bunch anyway 🙂

with me too lol, is this something of the new gamemaker versions?

Check out my updated version of this video for common errors and bugs, like this one that I breakdown.

It's not an issue with new versions. Check out my updated video. If you're still having issues, you can email me your project.

Do you mean 2 portals in the same room? In that case, you could, yes. A little bit of work, but you could use instance_find to find the other portal, and then set the ID to that. If it’s another room, that’s much more difficult. You can, but you’ll need to go into that room, save it’s ID in a file, and then read that file and get the info and put it in the other warp. Not super easy, but possible.

Check out my updated video on room transitions, I try to cover a bunch of the common bugs.

Music is different because once it starts it will continue running without an object. This means you really need a persistent object to keep track of your music. In the room star event, you can check which room you’re in and stop and start music as needed in there.

You'd put the code to move rooms at the end of that dialog/cut scene. I've got a tutorial on both of those. Feel free to check them out. Once you understand how to do something, the hard part becomes how to do it in the specific way you want. But there's always a way.

Thank you so much! What are those videos called?

Check them out here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-_4c2l6jXjDw.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-UIGC9aioyfk.html

Var is a keyword that creates a local variable, only usable in that event. Go ahead and remove it. The warning sign means it hasn’t been used anywhere else, and if you see this outside of a create event you’ve probably got a typo.

+BB.P Wongchanglor What can't you see in the new room? Your player? The warp?

My player. seems like it invincible in that room

I can fix it now. It just have some problem with my Tile set. Thx :)

It appears I don't, although it's on my list to do very soon. What you can try though, is basically creating an object that's black and fills up your entire screen. Make it transparent at first, then decrease its transparency slowly when you hit the warp, and reverse on the other side.

Beyond Us Games ok I’ll give that a try, if it’s not too much to ask do you know if there’s like a command or something to use when dealing with transparency ?

Yeah, it's image_alpha. docs2.yoyogames.com/index.html?page=source%2F_build%2Findex.html

And I just put a video about it: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-z_SYGyLegb0.html

Anytime.

That’s odd. If it pauses the game then you may be stuck in a loop from moving from one room to the next, because you set the coordinates on the gates. Make sure you’re spawning not on a gate.

Beyond Us Games it seems that its not a pause but a crash. Idk wut happened here but i delete the room n duplicate level1 to be level2 as the gate level0 to level1 worked. But ididnt think about theres possibilities of having that loop. Ill try see to that if im makin the next level. I hope thats the case.

If you’ve marked persistent, he’s there. But he may be off screen or hidden behind a layer. If you know the debugger, run that and check his depth in both rooms. If you don’t know the debugger, add a debug_message function in your player and have them write out their depth and then compare to the layers in both rooms. My guess is you have a background layer your player is moving to, hidden behind it

@@LetsLearnThisTogether Yes the object appear ! but even if i choose the X and Y location it always appear in the same place ... then it fall in the void. What to do ?

+DOLE '\ Hmm. Put a show message in the creation code of the other room. If it fires, you're going to the room. If not, then double check your code against mine. Nothing is odd, there's usually an error message.

+Ikari Well then, that's odd. It sounds as though your player's visible variable gets set to false when you go through the warp, but that seems unlikely.. Why don't you export the project and email it to me Aaron Craig. I always enjoy finding unique bugs.

Thanks! I've sent the email over to beyondusgames@gmail.com. It's probably something really minor and silly that I've missed so I apologise in advance.

+Ikari No worries. I'll get back to you soon.

Just incase anyone else runs into the same issue somehow, the depth of my layers were out of whack so give them a look! Thanks again, Beyond, much appreciated!

Yep, that would work.

That's a strange issue. Are you deleting those objects before you leave? A persistent room should stay the same when you leave and come back. If you want the room to totally reset each time you enter, make sure the room isn't persistent.

Typically this is because after you run into the warp you’re still allowing the player to move, and that move logic actually runs off the old x and y of the player, not the new one. What I’d suggest is when you run into the warp, pause all input from the player, move and warp, and then resume input. Typically that kind of logic is controlled by a state machine.

@@LetsLearnThisTogether can you show me an example?

@vrtexxradiation //code when you hit warp cantMove = true //in your movement code if (cantMove == false) { //regular code for movement } //start of new room cantMove = false That’s as simple as you can get. You can’t move when you begin warping and you can move any other time.

@@LetsLearnThisTogether ah thanks

First determine if the player is transferring or not by using the debugger. You can use it to see if the object does move to the new room. If not, you may have a bug. If it does move to the new room, then check depth and drawing objects as you’ve probably got your player behind something in your new room.

@@LetsLearnThisTogether I put in the wrong x and y positions i accidently mixed up the x and y, so i was stuck in a wall in the corner and i didn't see the player i fixed it though

I cover the animation part in another video, and you can add in sound pretty easy with the animation.

btw great tutorial keep it up :D

Check out my updated tutorial of changing rooms. It addresses some of the common problems like you’re encountering.

Squished like when you run the game? My guess is you're using a camera, and the ratios you're using don't match up.

The only reason I can think it would freeze is if you’ve got a loop of teleporting between rooms. Such that you start in room a, then immediately get teleported to room b, and then immediately back to a, and so on. Check where you’re teleporting and make sure that’s not happening.

Is your player marked as persistent? If not they won't be taken to the other room. If they are persistent, you need to check your room layers, as your player could be on a layer lower than the visible lower, causing your player to act invisible.

Can you post the actual error?

It works I just accidentaly ticked the "flip X" so It didn't worked. My bad but great tutorial indeed

Donot do Room_goto do room_goto and to targetroom.

That’s very strange. So you’re in 2 rooms at once?

@@LetsLearnThisTogether yeah basically? The only way I could fix this was by using a camera/viewpoint, making the screen zoom in so much you only see that room.

Check out my newest collision video with a similar name. It covers issues like this more thoroughly. The problem is probably from both of your objects being marked as solid. Uncheck that and try it.

Which video is it?

GameMaker Studio 2.3 - Creating & Changing Rooms, my last upload.

It sounds like you’ve got some extra code beyond mine interfering with the teleporting. Colliding with another instance shouldn’t mess up warping, so double check your code against mine to see if you can spot a difference.

@@LetsLearnThisTogether I'll mess around with it a bit and see what I can find.

Looks like a mis spelling. I see a variable with a name attack and it only has 1 t.

@@LetsLearnThisTogether Thx u very much for trying to Help. Stupidly i Always write it that way… :/ And it doesnt Matter wich Line of Code is writen here. If i delete this Code it Show error Message kinda similar to this. But with the next Code wich has something with Input in it... :/ Need a Hero. What Kind of Game is it without teleport

This is a common issue. The most likely problem is that when you try to go back to the first room it warps you onto the warp in the first room, which then takes you right back to the second room. Try moving the warps around and see if that helps.

@@LetsLearnThisTogether Hi i'm also having this issue, even when I delete the warp panel from the second room, I keep getting the error when i move back to where I warped from "ERROR in action number 1 of Step EventobPlayerOrange for object ObjWarp: Variable ObjWarp.targetRoom(100003, -2147483648) not set before reading it. at gml_Object_ObjWarp_Collision_ObMotherGoblin (line 3) - room_goto(targetRoom); ############################################################################################ gml_Object_ObjWarp_Collision_ObMotherGoblin (line 3)"

I’ve got an updated version of this video on my channel. Check it out, I cover some of the problems you might run into. If you can’t figure it out, you can export your project and email it to me. I’ll check it out

@@LetsLearnThisTogether i watched your 2 videos but it still not working, i think the problem is that some code on my character may be conflicting with the warp code, but i can't figure out which code is doing this