91 lines
3.5 KiB
Plaintext
91 lines
3.5 KiB
Plaintext
//----------------------------------------------------------------------------
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// Lesson5
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// Where we learn that windows are actually updating all the time!
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//----------------------------------------------------------------------------
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//
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// Okay, so each window can just be a simple description of its contents.
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// But, it can also have switches associated with it, which initialize data,
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// update data, and resolve data for the closing of the window.
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//
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// This means we can actually have window content that changes while we are
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// watching the window! This is cool. This means we can respond to the
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// player, or show them windows that seem alive. In the end, this means
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// that we can make little games in the window.
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//
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// But for now, let's see how we can update a window in a meaningful way. We
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// will animate a little character. Let's animate a little guy walking.
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//
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//----------------------------------------------------------------------------
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//
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// Windows can have three switches associated with them: startswitch,
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// thinkswitch, and finishswitch.
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//
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// The STARTSWITCH is responsible for initializing all the data. If you
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// were making a game, this would set up all tables and initialize necessary
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// data for the game to function. (Initialize is a term for assigning the
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// first "default" value.)
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//
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//
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// The THINKSWITCH is responsible for constantly updating the window while it
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// is open. It can check for changing variables, user input, and other things.
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// Upon these values, it can change the locations of its images, or the
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// contents of its text. Programmers, think of this as your main loop.
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//
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// The FINISHSWITCH is responsible for doing cleanup--you can unset variables
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// here, or set variable to be left after the Flow window concludes.
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//
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//
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// Instead of waiting for a mouseclick, like the following routine does, you
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// can manually close the window (and call the finishswitch automatically)
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// by using the closewindow command:
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// closewindow 2:1
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//
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// The easiest way to understand these commands is to see them in action. Here
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// they are, making a little character animate in place. To run this:
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//
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// MAP TEST
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// LOADAPE Lesson5
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// INVOKE 2:1
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//
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// After you check that out, go on to Lesson 6, where we'll see how we can move
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// the guy around!
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//
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//#############################################################################
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// DEFINES
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//#############################################################################
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#define $Lesson5 "2"
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#define $Animation "1"
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#define $Before "2"
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#define $During "3"
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#define $After "4"
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//#############################################################################
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// CODE
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//#############################################################################
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#window $Lesson5:$Animation
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startswitch $Lesson5:$Before
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thinkswitch $Lesson5:$During
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finishswitch $Lesson5:$After
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//-------------------------------------------------------
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width 256
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height 256
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body "Haylo."
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image pooper\Guy$counter$.pcx 10,30
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//=======================================================
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#switch $Lesson5:$Before
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set counter = 0
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return
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//=======================================================
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#switch $Lesson5:$During
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set counter = counter + 1
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if (counter > 3) set counter = 0
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return
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//=======================================================
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#switch $Lesson5:$After // called when you click on window
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unset counter
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return |