exitWith: Difference between revisions
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Lou Montana (talk | contribs) m (Text replacement - "\{\{cc\|([^} ]*)\}\}" to "// $1") |
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[[systemChat]] [[format]] ["%1", _j]; | [[systemChat]] [[format]] ["%1", _j]; | ||
// the [[for]] loop will cease and code execution will continue after the end of the loop | |||
[[if]] (_j == 5) [[exitWith]] | [[if]] (_j == 5) [[exitWith]] | ||
{ | { | ||
Line 85: | Line 85: | ||
[[if]] ([[alive]] [[player]]) [[then]] | [[if]] ([[alive]] [[player]]) [[then]] | ||
{ | { | ||
[[if]] ([[time]] > 300) [[exitWith]] | [[if]] ([[time]] > 300) [[exitWith]] // '''wrong''' - it will only leave the "if alive player" scope, remaining in the "while true" loop forever | ||
{ | { | ||
[[hint]] "exiting"; | [[hint]] "exiting"; | ||
Line 102: | Line 102: | ||
[[hint]] "reached"; | [[hint]] "reached"; | ||
}; | }; | ||
[[hint]] "not reached"; | [[hint]] "not reached"; // '''correct''' - if _condition is met, the scope has already been exited by now | ||
</code> | </code> | ||
Line 125: | Line 125: | ||
<dd class="note"> | <dd class="note"> | ||
[[exitWith]] cannot be used in event handlers with override ability to simply exit with override value. The following is incorrect: | [[exitWith]] cannot be used in event handlers with override ability to simply exit with override value. The following is incorrect: | ||
<code> | <code>// INCORRECT USAGE | ||
[[onMapSingleClick]] {[[if]] (![[isServer]]) [[exitWith]] {[[true]]}};</code> | [[onMapSingleClick]] {[[if]] (![[isServer]]) [[exitWith]] {[[true]]}};</code> | ||
The override value must be returned in the main scope of EH, but since it is exited with [[exitWith]], it never happens. The correct way in this case would be: | The override value must be returned in the main scope of EH, but since it is exited with [[exitWith]], it never happens. The correct way in this case would be: | ||
<code> | <code>// CORRECT USAGE | ||
[[onMapSingleClick]] {[[call]] {[[if]] (![[isServer]]) [[exitWith]] {[[true]]}}};</code> | [[onMapSingleClick]] {[[call]] {[[if]] (![[isServer]]) [[exitWith]] {[[true]]}}};</code> | ||
[[exitWith]] will exit current [[call]] scope only and override value therefore will appear in the main scope of the EH, right where we want it. | [[exitWith]] will exit current [[call]] scope only and override value therefore will appear in the main scope of the EH, right where we want it. |
Revision as of 11:26, 12 May 2022
Description
- Description:
- Exits the current code scope. Often used for exiting do, for, count, forEach or the whole script.
- Groups:
- Program Flow
Syntax
Examples
- Example 1:
systemChat "start"; private _condition = true; if (_condition) then { if (true) exitWith { systemChat "exiting if _condition scope"; }; systemChat "never shown"; }; systemChat "exiting #1 worked"; if (true) exitWith { systemChat "exiting the main scope = leaving the whole script"; }; systemChat "never shown - the script has already ended";
- Example 2:
for "_j" from 1 to 10 do { systemChat format ["%1", _j]; // the for loop will cease and code execution will continue after the end of the loop if (_j == 5) exitWith { systemChat "5 is enough"; }; }; systemChat "Complete";
- Example 3:
- Most loops will also terminate when their scope is exited. To exit and terminate scopes which are called every frame such as onEachFrame and waitUntil use the following examples:
onEachFrame { if (!alive player) exitWith { onEachFrame {}; }; };
_time = time + 10; waitUntil { if (time > _time) exitWith { true }; false };
- Example 4:
while { true } do { if (alive player) then { if (time > 300) exitWith // wrong - it will only leave the "if alive player" scope, remaining in the "while true" loop forever { hint "exiting"; }; }; };
- Example 5:
if (_condition) exitWith { hint "reached"; }; // else { hint "not reached" }; // wrong - using else does not work and makes no sense here
if (_condition) exitWith { hint "reached"; }; hint "not reached"; // correct - if _condition is met, the scope has already been exited by now
Additional Information
Notes
-
Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note
- Posted on May 28, 2010 - 22:15
- Roehre
- Since Arma 2 uses Blocks in FSM as any ordinary Handle like while, for etc. in Scripts, ExitWith also only closes the Block in the FSM.
- Posted on August 04, 2013 - 12:20
- Killzone_Kid
- The command will exit the current scope - no ifs no buts. If the current scope is a loop, it will exit the loop. If the current scope is the main body of a script, it will exit the script. For more understanding of scopes and exitWith have a look at this resource.
- Posted on March 10, 2016 - 08:31 (UTC)
- Killzone Kid
-
exitWith cannot be used in event handlers with override ability to simply exit with override value. The following is incorrect:
// INCORRECT USAGE onMapSingleClick {if (!isServer) exitWith {true}};
The override value must be returned in the main scope of EH, but since it is exited with exitWith, it never happens. The correct way in this case would be:// CORRECT USAGE onMapSingleClick {call {if (!isServer) exitWith {true}}};
exitWith will exit current call scope only and override value therefore will appear in the main scope of the EH, right where we want it.
Categories:
- Scripting Commands
- Introduced with Armed Assault version 1.00
- ArmA: Armed Assault: New Scripting Commands
- ArmA: Armed Assault: Scripting Commands
- Arma 2: Scripting Commands
- Arma 2: Operation Arrowhead: Scripting Commands
- Take On Helicopters: Scripting Commands
- Arma 3: Scripting Commands
- Command Group: Program Flow