Mail Archives: djgpp/1999/02/27/15:41:52
| From: | "<------------------------" <Nospam AT Nospam DOT com>
|
| Newsgroups: | comp.os.msdos.djgpp
|
| Subject: | Pointers to functions.
|
| Date: | Sat, 27 Feb 1999 20:12:13 -0000
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| Organization: | Customer of Planet Online
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| Lines: | 133
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| Message-ID: | <7b9jku$o7o$1@news6.svr.pol.co.uk>
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| X-Trace: | news6.svr.pol.co.uk 920146398 24824 62.136.54.138 (27 Feb 1999 20:13:18 GMT)
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| NNTP-Posting-Date: | 27 Feb 1999 20:13:18 GMT
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| To: | djgpp AT delorie DOT com
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| DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
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| Reply-To: | djgpp AT delorie DOT com
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This is a multi-part message in MIME format.
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Hi,
I'm in the process of writing a (very primitive) scrolling shoot-em-up =
like space invaders,
and in designing the core of the sprite moving program, I have chosen to =
have every object
call it's update function each frame. All the objects share a common =
data type, so I wanted
to use function pointers. The problem is, I've never uesd them before. =
Just wanted to know
how to prototype them (if any changes are needed) and how to specify =
them in my object_t
structure. I'd also appreciate any help in how I'm supposed to assign =
functions to the pointers,
and how to call those functions.
Thanks!
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<BODY bgColor=3D#ffffff>
<DIV><STRONG><EM><FONT color=3D#000000 face=3D"Times New Roman"=20
size=3D2></FONT></EM></STRONG><STRONG><EM><FONT color=3D#000000=20
face=3D"Times New Roman" size=3D2>Hi,</FONT></EM></STRONG></DIV>
<DIV><STRONG><EM><FONT color=3D#000000 face=3D"Times New Roman"=20
size=3D2></FONT></EM></STRONG> </DIV>
<DIV><STRONG><EM><FONT color=3D#000000 face=3D"Times New Roman" =
size=3D2>I'm in the=20
process of writing a (very primitive) scrolling shoot-em-up like space=20
invaders,</FONT></EM></STRONG></DIV>
<DIV><STRONG><EM><FONT color=3D#000000 face=3D"Times New Roman" =
size=3D2>and in=20
designing the core of the sprite moving program, I have chosen to=20
</FONT></EM></STRONG><STRONG><EM><FONT color=3D#000000 face=3D"Times New =
Roman"=20
size=3D2>have every object</FONT></EM></STRONG></DIV>
<DIV><STRONG><EM><FONT color=3D#000000 face=3D"Times New Roman" =
size=3D2>call it's=20
update function each frame. All the objects share a common=20
</FONT></EM></STRONG><STRONG><EM><FONT color=3D#000000 face=3D"Times New =
Roman"=20
size=3D2>data type, so I wanted</FONT></EM></STRONG></DIV>
<DIV><STRONG><EM><FONT color=3D#000000 face=3D"Times New Roman" =
size=3D2>to use=20
function pointers. The problem is, I've never uesd them before.=20
</FONT></EM></STRONG><STRONG><EM><FONT color=3D#000000 face=3D"Times New =
Roman"=20
size=3D2>Just wanted to know</FONT></EM></STRONG></DIV>
<DIV><STRONG><EM><FONT color=3D#000000 face=3D"Times New Roman" =
size=3D2>how to=20
prototype them (if any changes are needed) and how to specify=20
</FONT></EM></STRONG><STRONG><EM><FONT color=3D#000000 face=3D"Times New =
Roman"=20
size=3D2>them in my object_t</FONT></EM></STRONG></DIV>
<DIV><STRONG><EM><FONT color=3D#000000 face=3D"Times New Roman" =
size=3D2>structure.=20
I'd also appreciate any help in how I'm supposed to assign=20
</FONT></EM></STRONG><STRONG><EM><FONT color=3D#000000 face=3D"Times New =
Roman"=20
size=3D2>functions to the pointers,</FONT></EM></STRONG></DIV>
<DIV><STRONG><EM><FONT color=3D#000000 face=3D"Times New Roman" =
size=3D2>and how to=20
call those functions.</FONT></EM></STRONG></DIV>
<DIV><STRONG><EM><FONT color=3D#000000 face=3D"Times New Roman"=20
size=3D2></FONT></EM></STRONG> </DIV>
<DIV><STRONG><EM><FONT face=3D"Times New Roman"=20
size=3D2>Thanks!</FONT></EM></STRONG></DIV>
<DIV><STRONG><EM><FONT face=3D"Times New Roman"=20
size=3D2></FONT></EM></STRONG> </DIV>
<DIV> </DIV>
<DIV><STRONG><EM><FONT color=3D#000000 face=3D"Times New Roman"=20
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/STRONG></FONT></EM></STRONG></FONT></EM></STRONG></DIV>
<DIV><STRONG><EM><FONT face=3D"Times New Roman"=20
size=3D2> Please reply =
to News=20
Group</FONT></EM></STRONG></DIV>
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