Adding Gameplay
Tutorial
Beginner
30 Mins
Overview
Overview
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1.
Moving Platforms
2.
Gizmos
Summary
In this section we will take a look at adding various gameplay elements with the Game Kit. We have set up a demo level to show these, but you can also use a new Scene or your own Scene if you prefer.
Language
English
Recommended Unity Versions
2018.3
Tutorial
Adding Gameplay
1.
Moving Platforms
You can use MovingPlatforms to get your player from one place to another. Let’s add one to the Scene:
  • Navigate to the Project window.
  • Go to Assets > 3D GamekitLite > Prefabs > Interactables.
The Interactables folder contains all the pre-made gameplay elements created for this Kit.
  • Left-click and drag the MovingPlatform Prefab into the Scene view or the Hierarchy window.
  • If you move this into the Hierarchy window, don’t forget to use Frame Select to find it (keyboard shortcut: F).
  • You can also position, rotate and scale the GameObject through the Inspector window in the Transform component.
Tip:
Hover your mouse over X, Y or Z and left-click drag to the left or right to increase and decrease these values.
  • Position the whole GameObject where you would like the platform to start from.
We have positioned ours above the acid pool we created earlier.
Now let’s make the platform and set its movement path.

2.
Gizmos
The MovingPlatform comes with 3 Gizmos attached to allow you to easily alter the motion of the platform.
The screenshot above highlights the relevant Gizmos:
  • Set the Transform position to place the GameObject in the world.
  • Start position.
  • A dashed line, which indicates the path that the platform takes between the Start position and the End position.
  • End position
In the MovingPlatform’s Inspector window, find the Simple Translator component and tick the Activate box to enable movement.
If you adjust the Start position before you enable Activate, the MovingPlatform snaps to the Start position rather than the initial position set in Transform. This is to ensure the platform always starts from the right place, and translates according to behaviours set in the Simple Translator component.
Tip:
Hold the Ctrl key (Cmd on macOS) when you move a Gizmo to snap it to the grid and move it in increments. This can help you get straighter paths.
Ellen needs to avoid the acid pool, but the default Translate isn’t large enough for the MovingPlatform to fully cover it, so you need to adjust the End Gizmo.
To see the current translation motion of the MovingPlatform in the Editor, you can move the slider for Preview Position in a range from 0 to 1. The Scene window shows that the platform moves to where it would be in the game at that stage of the translation.
This is a very useful way to preview the behaviour and check for overlaps with other GameObjects in the Scene.

Duration

To alter the speed of the sequence from Start to End, change the Duration value. This is 5 seconds by default. Make this value smaller if you want a faster sequence, and larger if you want a slower sequence.

Set up MovingPlatform

You can use the Transform handles to drag the Start and End position gizmos. Hold down Ctrl (Cmd) whilst doing so to snap the location to a grid, for easier adjustment.
You can move the Preview Position slider at any point to preview the MovingPlatform’s movement between the two positions.
The last step for this workflow is to set the Loop Type. There are three different types of Loops.

Loop Type

Once: moves from Start to End, and stops when it reaches End.
Once loop type is most commonly used when you only require the player to be transported from the Start to the End.
Ping Pong: moves from Start to End and then End to Start, giving a continuous loop.
Ping Pong is the best type to use when you need the route the platform provides to be continuously available.
Repeat: moves from Start to End, then returns to Start to repeat.
For this example:
  • Set the Loop Type to Ping Pong.