By Jonathan Penn, Josh Smith

Energy up your internal online game developer and begin construction really good video games with Sprite equipment. This booklet will train you every thing you want to find out about Apple's second video game engine. in case you have a few programming adventure yet you are new to online game improvement, you are going to hit the floor working, no advanced instruments required—just the Sprite package SDK. you are going to start speedy by way of development a single-finger endless runner online game, the place the aim is to stick alive so long as attainable and rack up issues. you will discover the Sprite package template, activities, and particle editor and watch your video game take form with an armed participant send, asteroids and enemy ships, explosions, power-ups, and variable trouble. Then you are going to sew the sport including cutscenes, menus, and scoring.

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Extra info for Build iOS Games with Sprite Kit: Unleash Your Imagination in Two Dimensions

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This makes our star field reusable anywhere, and it will adjust to a scene’s dimensions automatically. We’re creating an SKSpriteNode for the star with the shootingstar image texture, but we don’t have that in our project yet. png into the Xcode project sidebar and make sure you copy the file into the project directory, as in Figure 7, Dragging and dropping files into the Xcode project, on page 14. Note how we’re randomly adjusting the size of the node and setting 1. info report erratum • discuss Chapter 3.

Many 2D games today add flair and polish in the form of particle effects. We, too, can give players a delightful experience with these special effects to catch their eye and stimulate their palate. Sprite Kit makes it easy to implement many kinds of particle effects. We’ll explore two different techniques based on the kind of feel we want to evoke in our game. You’re going to learn the basics of particle emitting by rolling your own parallax star-field background that gives the illusion of zooming quickly through space.

The third parameter, orientToPath:, is the most beautiful part of Sprite Kit’s path-following action. By passing in YES, the enemy ship will turn to face the direction of the path automatically. If you’ve ever tried to do this on your own in other game frameworks, you’re certainly shedding tears of joy right now. info report erratum • discuss Moving Nodes on a Path • 27 And the fourth parameter, duration, is the same as with all the other time-based actions we’ve used. We’re saying that the ship should move over the course of seven seconds, following the path as an offset from its starting point, and orient itself to face the direction the path is currently pointing.

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