newt That's exactly my problem right there. Because ScrollTo behavior updates the system's scrollx and scrolly after all events, my events always use the old values of scrollx and scrolly in the current tick. Thus creating a one-frame lag.

newt Yes that's the solution I use and tell my clients to use. However, I wish there was an easier way to get scrollx and scrolly after they are modified by the ScrollTo behavior.

newt No, the existing parallax effect for layers is centered at the top-left corner of the layout, which is not intuitive for side-scrolling games such as platformers where almost all backgrounds are positionned on the ground (mountains, hills, ... etc).

I compute the coordinates of each TiledBackground instance myself using the layout scrolling value provided with the system expressions scrollx and scrolly.

My implementation centers the parallax effect at the bottom-left corner of the layout.

By looking at the code of the ScrollTo plugin, I see that it scrolls the layout in the "tick2" method, which is called after the events in the event sheet apparently. So my event sheet will always have the old scrollx and scrolly values, which in turn create the one-frame lag.

Hello Scirra community,

I made a template that helps developers easily add parallax backgrounds to side-scrolling games. Check it out here : https://www.scirra.com/store/royalty-fr ... ounds-1289

The template computes each background's position and width from the scrollx and scrolly system parameters.

The backgrounds move nicely as you can see in this video : https://youtu.be/0YkXoFELqWE

There is however one limitation you have to comply with : if you scroll the layout, you have to do it before including the event sheet where I implemented the parallax effect. That way, the parallax effect will always use the newest values of scrollx and scrolly (system expressions).

The problem with this implementation is that if you add ScrollTo or MagiCam behavior to a sprite, my parallax effect will use the old values of scrollx and scrolly every tick to compute the backgrounds' position and width. This will cause the backgrounds to move in a jumpy way.

What I advise my clients to do is to remove the ScrollTo behavior, then manually scroll to the sprite in the event sheet, then include the parallax effect's event sheet after this event and any event that modifies the layout's scrollx and scrolly.

Is there a way to have my parallax algorithm always use the newest values of scrollx and scrolly no matter where I include it in the event sheet? It would also be great to keep using ScrollTo or MagiCam behavior while still getting the newest values of scrollx and scrolly.

If you experienced a similar problem previously, could you suggest a solution? My clients and I would really appreciate it! Thank you.

I just published the first update for this template :

• Now you can add Sprites as parallax objects, they can move or be animated, and they will wrap around the screen
• A new demo layout with backgrounds and foregrounds, all moving with a nice parallax effect, check out the video here : https://youtu.be/0YkXoFELqWE
• A detailed manual on how to easily include parallax backgrounds/foregrounds in your game

Never again bother trying to create parallax backgrounds on your own. With the help of this template, your infinite runner, platformer, shooter or other kind of side-scrolling game will have nice backgrounds that wrap around the screen indefinitely. Just follow the instructions in the manual and you'll be all set in no time!

Enjoy the template and if you have any questions before or after your purchase feel free to contact me at gameplaypassion@gmail.com.

Adventurer Spritesheet 11 — Now for sale in the Scirra Store!

https://www.scirra.com/store/royalty-free-spriter-animations/adventurer-spritesheet-11-1724

<p>An evil male character for runners, platformers or side-scrolling games. He is armed with a dangerous machete and is ready to cut your protagonist to pieces!</p><h3>Features</h3><div class="deshr"></div>

• 17 animation states (PNG frames for each animation included)
• Each frame at 400x400 pixels out of the box
• 100% customizeable and resizeable vector body parts made with CorelDraw (.CDR, .AI, .SVG, .EPS included)
• You can edit the body parts in CorelDraw, Illustrator or Inkscape
• Skeletal animations made with Brashmonkey Spriter (.SCML and .SCON included)

Use this topic to leave comments, ask questions and talk about Adventurer Spritesheet 11

Adventurer Spritesheet 10 — Now for sale in the Scirra Store!

https://www.scirra.com/store/royalty-free-spriter-animations/adventurer-spritesheet-10-1709

<p>An evil male character for runners, platformers or side-scrolling games. He is wearing a black suit, an eye patch and a hat. It is clear that this guy is up to no good!</p><h3>Features</h3><div class="deshr"></div>

• 35 animation states (PNG frames for each animation included)
• 100% customizeable and resizeable vector body parts made with CorelDraw (.CDR, .AI, .SVG, .EPS included)
• You can edit the body parts in CorelDraw, Illustrator or Inkscape
• Skeletal animations made with Brashmonkey Spriter (.SCML and .SCON included)
• Bonus items: Knife, Grenade, Explosion (animation), Muzzle Flash (animation), Impact (animation), Bullet (animation)

Use this topic to leave comments, ask questions and talk about Adventurer Spritesheet 10

Adventurer Spritesheet 9 — Now for sale in the Scirra Store!

https://www.scirra.com/store/royalty-free-spriter-animations/adventurer-spritesheet-9-1637

<p>A dangerous female protagonist for your action game, adventure game, runners, platformers, strategy or side-scrolling games. She is armed with a sawed-off shotgun, a knife, and grenades, and she's not afraid to use them!</p><h3>Features</h3><div class="deshr"></div>

• 35 animation states
• 100% customizeable vector body parts made with Adobe Illustrator (.AI, .SVG, .EPS included)
• PNG frames for each animation
• Skeletal animations made with Brashmonkey Spriter (.SCML included)
• Bonus items: Knife, Grenade, Explosion (animation), Muzzle Flash (animation), Impact (animation), Bullet (animation)

Use this topic to leave comments, ask questions and talk about Adventurer Spritesheet 9