Difference between revisions of "Manual:DIL Manual/secure()"

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= secure ( u : unitptr , label) =
 
  
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Secures the unitptr 'u' and jumps to 'label' when the secure is broken.
 
  
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  u : Unit to secure.
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<span id="bpsec"></span>
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  label : Label to jump to, on removal.
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secure ( u : unitptr , label )
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    u : Unit to secure.
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Secures a unitptr, so that the program will go to 'label' if unit leaves local environment.
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    label : Label to jump to, on removal.
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The unit leaves the local environment when it is destroyed or e.g. moved to a different location
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    result: Secures a unitptr, so that the program will go to 'label'
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such as an adjacent room. A transparent room in a room would not count as leaving the local environment.
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            if unit leaves local environment. If this happens, during
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            a call to another function/procedure, it will continue
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A DIL program is tested for secures in the follow circumstances:
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            at that label when the function/procedure returns.
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* When the DIL program is activated (e.g. after a pause / wait())
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            If you perform some kind of call to a template, the removing
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* When the DIL program has performed a send(), sendto(), sendtoall(), sendtoalldil().
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            of a unit from the local environment will not have affect.
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* When the DIL program calls updateposition() (because it might kill the unit)
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            until the return from that function, as the program execution
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* When the DIL program calls cast(), cast2() or attackspell(), meleeattack(), meleedamage().
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            will continue at the designated label after a call. Should
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* Returning from a DIL sub-function that has triggered a secure() scan.
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            several secured units leave local environment, the last such
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* In every foreach-next step
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            event will determine the point of execution upon return.
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A DIL program will test a specific unit for secure in the follow circumstances:
 
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* DIL destroy(u) will test if 'u' was a secured() variable and if so will trigger it if destroyed.
 
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* DIL exec(str, u) will test if 'u' was a secured() variable and if so will trigger it if destroyed.
 
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A specific test will also cascade down through frames.
 
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If a secure() is triggered during execution in a sub-function/procedure, then once execution returns to
 
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the parent frame, then the parent frame will test for secure() violations before continuing execution.  
 
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Should several secured units leave local environment, the last such event will determine the point of execution upon return.
 
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See also:
 
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  > unsecure
 

Revision as of 10:44, 4 December 2025


secure ( u : unitptr , label )
   u : Unit to secure.
   label : Label to jump to, on removal.
   result: Secures a unitptr, so that the program will go to 'label'
           if unit leaves local environment. If this happens, during
           a call to another function/procedure, it will continue
           at that label when the function/procedure returns.
           If you perform some kind of call to a template, the removing
           of a unit from the local environment will not have affect.
           until the return from that function, as the program execution
           will continue at the designated label after a call. Should
           several secured units leave local environment, the last such
           event will determine the point of execution upon return.
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