It’s fairly straight forward, we enable different powerups based on the ID of the power up. 0 is for the Triple Shot, 1 is for the Speed Up, and 2 is for the Shield. Now, I don’t like the default way this is done, so I’m going to convert it into an enumeration and case against that within the switch. Which means I’m going to go ahead and rename powerupID to PowerUpType and convert it from an int to an enum PowerUpType.

Of course we have our ship’s movements to consider for animation, but let’s start with something simple for now. We’ve introduced the Triple Shot laser power up previously. …

We’re enabling a timed “power up” of the primary weapons systems, the lasers. This power pickup enables you to leverage three lasers at a time instead of just one for a short duration (currently set to 5.0s). Now that we have a few game mechanics in place as well as…

In order to enhance our game, we’re leveraging a space-themed background sprite. We transformed it to fit the viewport of the camera, and setup additional sorting layers (background and foreground). We’ve foregrounded the player, which you can see has been replaced with a spaceship sprite, as well as the enemies that are spawned, which have been replaced with similar spaceship sprites. The laser beam has also had its sprite updated. The way to convert from prototype is to drop the 3D object and start leveraging a sprite renderer as well as a 2D box collider.

In Sovereignty, we want to spawn enemies in a random position at the top of the screen, for the player to engage as they automatically move down the screen. As we know, if we let the enemies fly down to the bottom, they re-spawn at a random position at the…

For the case of Sovereignty, there aren’t going to be any hard surface collisions. Why do I bring that up? Because that means we’re primarily going to be leveraged OnTriggerEnter for our collisions as we have things “pass through” each other and determine how to interact upon their first touch…

In Sovereignty, we don’t really want to allow unlimited/infinite and no-lag weapons fire. Therefore, we need to enable a Cooldown (CD) on player input of the weapons that are capable of being fired.

When dealing with game objects, especially those that are spawned during the runtime of your gameplay, you’ll want to take care to ensure their proper instantiation as well as cleanup, so that your object graph doesn’t become overly cluttered and eat up heaps of memory. In the case of Sovereignty, the player’s ship will be able to utilize various projectile weapons, starting with the basic single-shot rapid-fire laser. The spawn of the laser prefab is triggered by user input, specifically the spacebar:

It’s a fairly straight forward affair when you consider the mechanics. Retrieve the axis you’re interested in and store them in a local variable. Generate the direction of motion based on these inputs. Perform a translate upon the game object’s transform with an arbitrary speed value and multiplied by Time.deltaTime…