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Adding more game objects & component
Create the Ground game object, go the templates / sprites / environment / Tiles, select any tiles you like and game and drop tot eh scene, rename it as you want. Then add Box Collider 2D to the the object.
What is Box Collider 2D? For assets in a 2D project to have a physical presence in the Scene and be able to interact with each other, they must have a 2D Collider. A 2D Collider is a component that helps define an asset’s physical shape to determine how it will interact with other colliders in a Scene.
After adding the component adjust the game object using the transform tool.
Then select out player game object and add the Box Collider 2D to it adjust the size to fi the game object. Use the resize tool to adjust the outline of the component.
Add the Rigidbody 2D component to the game object. A Rigidbody is a property, which, when added to any object, allows it to interact with a lot of fundamental physics behavior, like forces and acceleration.
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