by Jon (Updated on 2016-12-06)
As we described in the Scene Basics section, scenes control a game’s flow and can be thought of as various states in a game that you transition between, like a story.
- How To: Changing Scenes
- Example: Enter Door, Switch Scene
- Example: Level Selector
How To: Changing Scenes
Changing a scene involves 3 parts.
- What scene you want to go to next (or reload the same scene)
- The exit transition
- The entry transition
Use the following blocks (under Scene > Game Flow) to perform a scene change.
If it isn't apparent, a reload will "switch" to the current scene.
Don't perform 0 second transitions. Instead, go with a low number such as 0.01, for stability.
- You cannot perform multiple scene changes at the same time. Once a scene change is in progress, it must reach completion before another scene change is initiated. Any new requests for scene changes will be ignored.
Transitions are visual effects that are applied during a scene change. You can select different transitions for the "out" and the "in" portion of a change.
Stencyl supports these transition types.
Example: Enter Door, Switch Scene
In this simple example, we’ll make the hero enter the cave once he steps into the cave’s door, represented by a Region.
I opted to use a “Actor Type Enters Region” event and placed a Region over the door to detect entry.
Example: Level Selector
Building a Level Select screen is common to many games. Here’s a simple and elegant way to make one.
To pull this off, I’ll use the “get scene with name” block (Scene > World). This block returns a scene, given a name.
Now, I can drag this block into our regular scene switch block. (If you didn't know you could do that, now you know.)
Our goal is to make a simple behavior that we can reuse. To pull off a clean Level Select, our scenes have to have a predictable naming scheme. How about we just give each level a number as a name, starting from 1?
If we do that, we can then pass a Number Attribute into the “get scene with name” block, and it will magically switch to the scene with that “name”
The Implementation: Creating the Buttons
Putting this all together, here’s a behavior that creates 5 Level Select buttons in a row, spaced apart by 100 pixels.
Exercise: You should extend this, so that it wraps over and starts a new line upon hitting the 6th button)
Note: The "for Last Created Actor, set ..." block is a special block that sets the value of a different Behavior's attribute. In this case, we're telling the block what Scene it's associated with, otherwise it wouldn't know which Scene to switch to and what to draw. We cover the concept of setting attribute values of other behaviors in Chapter 5.
The Implementation: The Buttons' Logic
Each Level Select button contains 2 Events and a single Number Attribute (called “SceneNumber” that tells the button what scene it should represent in the Level Select.
1) One event that draws the button.
2) One event that switches the scene when the button is pressed.
- Scenes are the states in a game.
- Changing scenes involves an exit transition and entry transition.
- You can only perform one scene change at a time.
Challenge: Actor’s Position in “Next” Scene
In Zelda, when Link walks off the edge of a room, he naturally appears at the “right” spot in the next room.
For example, if he steps off the right side of a room, he will usually appear at the left side of the next room.
This turns out to be a challenge because you need to reposition your hero, based on where he came from before. Fortunately, there’s a block that can help you out (Scene > Game Flow).
Use this block to implement a generic, reliable system for placing an actor at the “right” spot, much like the Zelda game does.Print Article Edit Article How to Edit an Article
The solution for the challenges is: Select the Create Actor Type in next scene (don't forget to put the scene FIRST)
I made a character selection screen so instead of spawning one player the person playing chooses by clicking a button and it will spawn the actor they chose on the next scene but i need to be able to get to the next level with the character they chose but all the region scene switcher things wont work because i didnt add an actor i spawned one with a button pls help me! :'( :'( :'(
To make the level selector:
I can't find this "button" or way to implement it. Do you need an actor called "button"? it won't let me make an attribute called "button" and use that.
How to return to scene (scene1-> Scene2 and scene2-> Scene1), help thankful.
My Email : email@example.com
How do you make a side scroller?
How to automatically change to next scene
i have the newest version of stencil ( version: 3.3.0) and everytime i try to look for fade out for 1 second... (the top two blocks under "how to changing scenes") i can't seem to find it. please help
Is it possible to make scene changes take place on a mouse click of scene region?
How do you download the level selecter... or at lease "get" it?
Im making a game and i have a main menu and i want to make two buttons "start" and "credits" so if the player clicks in that region it will go to a sceen. I need help PLEASE!!! Thank you!