![]() Animation of the info bar at top of screen. ![]() ![]() Wrapping sprites/sprites when they reach the screen edge.Combining sprites/models and the background, and drawing them into a Virtual Screen.When they hit something, or reach their range, they will take the shots.Simultaneous event driven programs are used in most Action-type computer games, such as Space Invaders and Counter Strike. The program generates and processes many events during each frame. These events include: This makes everything appear to be happening simultaneously. Once the state has been updated, time moves to the next frame and is processed. Simultaneous event driven programs break down time into discrete “frames”. Each frame may contain many events, some of which can be independent and others that react to user actions. Once all events have been processed, the program’s “state”, which is what the user sees on their screen, is updated simultaneously. Instead, the program processes the input and changes the system state. ![]() Simultaneous event driven programs can handle many different events at once. The program does not rely on the input of the user to drive it. Then, they process each event one by one. My word processor is a Sequential Event Driven Program. It processes each event one at a while. Many Windows(tm), spreadsheets, drawing programs and Adventure type games are Sequential Event Driven applications. They are action, response, action, and reaction. Sequential Event Driven Programs sit and wait until you do something. These are the most common Event Driven Programs: Simultaneous and Sequential Event Driven It also stores the letter in my document, displays it in the appropriate font and moves the cursor to the next position. After waiting for me to type, the main program goes through each step sequentially, and then waits until the next event. These programs then compute and output the result. For example, the word processor has procedures for getting the correct letter from the keyboard. Interactive Event Driven Programs are available and respond to your input and work in the background constantly. An Event is anything you do that interacts with the program. An Event Driven program searches for and processes events as they happen. This is an Event Driven program. It waits until I type something. It displays the letters that I have typed and advances the cursor when I do. Any of the more than 100 functions I can do at any given time include bolding words, correcting my spelling, and so on. Event Driven programs don’t know what you will do next, they respond to your actions whenever you do them.Įvents driven programs can be broken down into smaller, procedure-driven programs. The program transmits the required input to the procedures. Finally, there is an end where you get some output. Once the program has completed its work, it will output a result. Programs that calculate PI to 10,000 decimal points, slide shows or self-running demonstration programs are examples of such programs. A procedure driven program has a clear beginning where you input your parameters and a middle where computation takes place. Sequential Driven programs work in a sequential fashion, starting from the beginning and ending at the end. The program starts with the initial parameters. Computer programs can be broken down into two categories: This post explain what is the difference between a sequential program and an event-driven program? What is the Difference between a Sequential Program and an Event-driven Program?
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