So I understand the concept for movies that are on DVD or Blu-Ray, as the disc spins the encoded data of the image that is on the disc is more or less read by the disc-player and displayed on the screen. But movies are linear and the disc just has to spin with the laser moving in a little every rotation and voila, movie I suppose. But with video games how are all the moving parts of the game, and my inputs and whatnot, read by the system off the back of a disc? Wouldn’t various parts of the code be in differing places on the disc? How does it jump back and forth between disc locations so quickly? How much of the game I’m playing is actually a result of the information on the disc, and how much comes from the part that I have to download whenever I put in a new game’s disc? Is the disc essentially just an installer wizard that allows me to download the actual game?
In: Technology
The computer or console loads all the data it needs into memory and accesses what it needs to create the onscreen display from memory. If the game is larger or more complex, it may load further chunks of data into memory as the game progresses. The disc is not needed in the meantime.
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