By Phillip Kerman
Construction a linear animation or reasonably interactive Flash motion picture is comparatively basic. With the improve from Flash four to Flash five, ActionScripting has develop into a fair extra the most important and robust a part of the product. Tapping the sizeable programming features of Flash, although, calls for greater than brute programming skill--it calls for a willing figuring out of the way to use scripting to precise projects. This publication concentrates on useful purposes for Flash programming. The ebook is dependent into 3 elements: beginning wisdom (general programming thought utilized to Flash with brief projects to illustrate particular concepts); utilized workshop (more concerned initiatives damaged into 3 elements each--design dialogue, the construction steps, and research with feedback of variation); and, Reference (which offers a concise directory of a few of the extra beneficial components in ActionScript).
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Extra info for ActionScripting in Flash
But the process of pseudo-coding actually makes you a better programmer by forcing you to sort out the details of the task you’re solving. Pseudo-code should be very detailed and written in clear English. That is, you want to say everything necessary, but you don’t need to use any words from the ActionScript language. For example, imagine you plan to program a button that will convert a dollar amount from one field and display the equivalent value in Euros in another field. 5 euros=dollars multiplied by exchangeRate euros=euros rounded off to two decimal places put euros into another field end After you know a little bit of ActionScript, you can easily translate this pseudocode into a working script.
Finding Cursor Position In Flash 4, you could not ascertain the position of the user’s cursor. However, you could “Get Property” of a clip instance (that is, get the _x and _y positions). To get around this, the resourceful Flash programmer would create an empty clip and, in the first frame of the movie, start dragging the clip. Normally, you’d expect to drag something when you clicked (that is, on press), but this trick caused the movie to be dragged at all times even though the user never clicked.
39 05 0789 CH03 3/20/01 40 5:25 PM Part I Page 40 Foundation Hard Wiring Hard wiring is generally a big no-no. Hard wiring is using an explicit value instead of a variable or reference to other values. For example, imagine that your program is supposed to display a message “Welcome