Jump: Difference between revisions

Revision as of 16:24, 31 July 2008

jump <address>

<address> - is a gamevar that stores the destination address.

Transfers control to another statement with a specified <address> which should be obtained by the getcurraddress command. The address must be obtained before the corresponding jump command. This limitation makes it hardly possible to do a jump forward.

Here is an example that shows how to make a countdown loop(from 10 to 1) by means of the jump command.

 // addr and i are gamevars.
 setvar i 10
 getcurraddress addr
 // begin loop
 addlogvar i
 subvar i 1
 ifvarn i 0 jump addr // if 'i' isn't 0, jumps to addr

@@ Line 1: / Line 1: @@
-jump <addr>
+'''jump''' <address>
-<addr> - is a gamevar obtained by [[getcurraddress]]
+<address> - is a gamevar that stores the destination address.
-This command is also know as GOTO(http://en.wikipedia.org/wiki/Goto). Too bad this jump command isn't as good as it can be. It hardly can be used to jump forward because <addr> isn't known.
+Transfers control to another statement with a specified <address> which should be obtained by the [[getcurraddress]] command. The address must be obtained before the corresponding jump command. This limitation makes it hardly possible to do a jump forward.
-Here is an example. It countdowns the i variable from 10 to 0.
+Here is an example that shows how to make a countdown loop(from 10 to 1) by means of the jump command.
    // addr and i are gamevars.
    setvar i 10
@@ Line 12: / Line 12: @@
    addlogvar i
    subvar i 1
-   ifvarn i 0 jump addr // if i isn't 0, jump to addr
+   ifvarn i 0 jump addr // if 'i' isn't 0, jumps to addr
-Yes, it could be done via [[whilevarn]] but it's just an example.
 [[Category:EDuke32 specific commands]]

Jump: Difference between revisions

Revision as of 16:24, 31 July 2008

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