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In this learn to code tutorial video on game development using Unity3D, we continue our study of Unity's Physics engine by exploring Triggers. We setup various checkpoints in our terrain so that our hero can pass through them to add time to the clock and Triggers are at the heart of this. We use OnTriggerEnter to do this in our C# scripting.
We also take a moment and revisit UI by learning how to add a second and third canvas and write code to fade this canvas in and out. This plays the role of adding messages such as "checkpoint achieved" and "game over" that enhances our user experience.
Finally we explore Raycasting and learn how to fire lasers from our hero. We then learn how to use that laser to make objects move and finally to instill damage such that after a few hits, the obstacle disappears.
