Missile Commando with Swift and Sprite Kit

Create firing particles for the gun turret using a sprite kit emitter, adjust birth rate, lifetime, and position range, and pass location and force to emitters for proper direction.

Set up parallax backgrounds in Swift and SpriteKit by layering stars and a moon, then move them with SK actions in looping sequences for a seamless, multi-speed background.

Create an enemy missile class in SpriteKit with Swift, initialize its sprite and physics body, and launch missiles repeatedly at random x positions to test creation.

Animate the enemy missile using a texture atlas, load frame textures into an array, and loop them with a forever SKAction; add a fire particle emitter for effects.

Explore arcing enemy missiles with random horizontal variance, gravity, and comet trail dots in SpriteKit, using dot sprites, start dot sequences, and SKAction to create fading, growing trails.

Implement the game over loop by adding a game over test, count destroyed bases, and trigger game over when conditions are met, while identifying the active base.

Learn to create explosion effects for missiles using sprite nodes, images, and actions, and implement hit tracking with damage points to determine when to destroy the enemy missile.

Configure the physics contact listener and handle did begin contact between bullets and enemy missiles. Explode at the collision point and remove involved nodes, reusing code for both collision orders.

Implement game over handling by halting actions, exploding all missiles, reviving bases, and restarting the game to reset levels and gravity parameters.

Explore wave stats and leveling mechanics by configuring level variables, drone speed, missile rate, and attack counters, while updating on-screen stats labels and triggering level ups.

Set up a health meter with textures, initialize health, and handle loss to trigger game over and resets. Add scoring for missiles and ricochets, with success and fail sounds.