Stealthing ships to force target loss - Revision history

SypheDMar: Related links

2011-10-03T16:47:07Z

SypheDMar at 16:44, 3 October 2011

2011-10-03T16:44:48Z

← Older revision		Revision as of 16:44, 3 October 2011
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	Note that we do not invalidate arguments after they have been used, as otherwise this process could only happen once per ship. Whereas we want it to happen every time a ship on the argument list is targeted, even if it is the same one twice.		Note that we do not invalidate arguments after they have been used, as otherwise this process could only happen once per ship. Whereas we want it to happen every time a ship on the argument list is targeted, even if it is the same one twice.

			==See also==
			*[[FreeSpace 2 Tactical#Stealth Missions\|Stealth missions]]
			*[[Sensor degradation with range or facing]]


	[[Category:FRED Examples]]		[[Category:FRED Examples]]

Shade: Fred-ized look of example events

2010-04-15T21:28:34Z

Fred-ized look of example events

← Older revision		Revision as of 21:28, 15 April 2010
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	'''Stealth Event:'''		'''Stealth Event:'''

	-op every-time-argument		- <span style="color:red">op</span> every-time-argument
	-op any-of		- <span style="color:red">op</span> any-of
	- <list of ships to be regularly untargeted>		# <list of ships to be regularly untargeted>
	- op targeted		- <span style="color:red">op</span> targeted
	- <argument>		# <argument>
	- 2		# 2
	- op ship-stealthy		- <span style="color:red">op</span> ship-stealthy
	- <argument>		# <argument>
	- op modify-variable		- <span style="color:red">op</span> modify-variable
	- Mission_Time(0)		<span style="color:red">#</span> Mission_Time(0)
	- op mission-time		<span style="color:red">op</span> mission-time


	'''Unstealth Event:'''		'''Unstealth Event:'''

	-op every-time-argument		- <span style="color:red">op</span> every-time-argument
	-op any-of		- <span style="color:red">op</span> any-of
	- <list of ships to be regularly untargeted>		# <list of ships to be regularly untargeted>
	- op and		- <span style="color:red">op</span> and
	- op is-ship-stealthy		- <span style="color:red">op</span> is-ship-stealthy
	- <argument>		# <argument>
	- op <		- <span style="color:red">op</span> <
	- op +		- <span style="color:red">op</span> +
	- Mission_Time(0)		<span style="color:red">#</span> Mission_Time(0)
	- 2		# 2
	- op mission-time		- <span style="color:red">op</span> mission-time
	- op ship-unstealthy		- <span style="color:red">op</span> ship-unstealthy
	- <argument>		# <argument>

	And here's how it works:		And here's how it works:

Mobius: "Stealth Event" and "Unstealth Event" capitalized to make them more prominent. May this go straight to Goober's face II

2009-05-04T22:01:25Z

"Stealth Event" and "Unstealth Event" capitalized to make them more prominent. May this go straight to Goober's face II

← Older revision		Revision as of 22:01, 4 May 2009
Line 3:		Line 3:
	Make a variable called Mission_Time and initialize it to 0, then set up the events as follows.		Make a variable called Mission_Time and initialize it to 0, then set up the events as follows.

	Stealth Event:		'''Stealth Event:'''

	-op every-time-argument		-op every-time-argument
Line 18:		Line 18:


	Unstealth Event:		'''Unstealth Event:'''

	-op every-time-argument		-op every-time-argument

Mobius: Stealthing Ships To Force Target Loss moved to Stealthing ships to force target loss: New name

2009-04-05T14:13:30Z

Stealthing Ships To Force Target Loss moved to Stealthing ships to force target loss: New name

← Older revision	Revision as of 14:13, 5 April 2009
(No difference)

Shade: aloow-->allow

2006-04-27T19:44:24Z

aloow-->allow

← Older revision		Revision as of 19:44, 27 April 2006
Line 1:		Line 1:
	Stealth can be used for more than as just a simple state for a ship to be in when you want it untargetable. As it can be toggled in-mission through sexps, one example of a different use is to force the player to lose his target at regular intervals but still ~~aloow~~ it to be reacquired, similar to EMP storms but without all the other effects. Here's how to do it:		Stealth can be used for more than as just a simple state for a ship to be in when you want it untargetable. As it can be toggled in-mission through sexps, one example of a different use is to force the player to lose his target at regular intervals but still allow it to be reacquired, similar to EMP storms but without all the other effects. Here's how to do it:

	Make a variable called Mission_Time and initialize it to 0, then set up the events as follows.		Make a variable called Mission_Time and initialize it to 0, then set up the events as follows.

Shade: clarification

2006-04-27T19:38:00Z

clarification

← Older revision		Revision as of 19:38, 27 April 2006
Line 41:		Line 41:

	In the second event, you will notice there are several conditions for it to occur, both the <tt>is-ship-stealthy</tt> check against the argument list, and a check against Mission_Time + 2 being less than the current mission time. This last one is important, as stealthing and unstealthing a ship ''in the same frame'' will not make the player lose that target. There has to be a small delay between stealthing and unstealthing for it to work. Finally, we make the stealthed ship unstealthy again so the player can reacquire it if needed, in which case the whole process will repeat.		In the second event, you will notice there are several conditions for it to occur, both the <tt>is-ship-stealthy</tt> check against the argument list, and a check against Mission_Time + 2 being less than the current mission time. This last one is important, as stealthing and unstealthing a ship ''in the same frame'' will not make the player lose that target. There has to be a small delay between stealthing and unstealthing for it to work. Finally, we make the stealthed ship unstealthy again so the player can reacquire it if needed, in which case the whole process will repeat.

			Note that we do not invalidate arguments after they have been used, as otherwise this process could only happen once per ship. Whereas we want it to happen every time a ship on the argument list is targeted, even if it is the same one twice.

	[[Category:FRED Examples]]		[[Category:FRED Examples]]

Shade: new page

2006-04-27T19:26:00Z

new page

New page

Stealth can be used for more than as just a simple state for a ship to be in when you want it untargetable. As it can be toggled in-mission through sexps, one example of a different use is to force the player to lose his target at regular intervals but still aloow it to be reacquired, similar to EMP storms but without all the other effects. Here's how to do it:

Make a variable called Mission_Time and initialize it to 0, then set up the events as follows.

Stealth Event:

-op every-time-argument
-op any-of
- <list of ships to be regularly untargeted>
- op targeted
- <argument>
- 2
- op ship-stealthy
- <argument>
- op modify-variable
- Mission_Time(0)
- op mission-time

Unstealth Event:

-op every-time-argument
-op any-of
- <list of ships to be regularly untargeted>
- op and
- op is-ship-stealthy
- <argument>
- op <
- op +
- Mission_Time(0)
- 2
- op mission-time
- op ship-unstealthy
- <argument>

And here's how it works:

Using the every-time-argument/any-of combination of SEXPs allows us to apply the event to a whole list of ships instead of just one, and allows it to repeat itself indefinitely as long as the condition is true. We also set up a variable called Mission_Time, which I will get to in a moment.

In the first event, we use the training SEXP <tt>targeted</tt> to check whether a ship in the argument list is targeted by the player, with a small delay so he/she can at least turn towards it before losing the target again, and make that ship stealthy once the delay has passed. Finally, the last thing we do in this event is to set the Mission_Time variable to the current mission time. We have to do this to be able to time the second event as there is no <tt>is-ship-stealthy-delay</tt> status SEXP, just <tt>is-ship-stealthy</tt>.

In the second event, you will notice there are several conditions for it to occur, both the <tt>is-ship-stealthy</tt> check against the argument list, and a check against Mission_Time + 2 being less than the current mission time. This last one is important, as stealthing and unstealthing a ship ''in the same frame'' will not make the player lose that target. There has to be a small delay between stealthing and unstealthing for it to work. Finally, we make the stealthed ship unstealthy again so the player can reacquire it if needed, in which case the whole process will repeat.

[[Category:FRED Examples]]

← Older revision		Revision as of 16:47, 3 October 2011
Line 46:		Line 46:
	==See also==		==See also==
	*[[FreeSpace 2 Tactical#Stealth Missions\|Stealth missions]]		*[[FreeSpace 2 Tactical#Stealth Missions\|Stealth missions]]
	*[[Sensor degradation with range or facing]]		*[[Sensor degradation with range or facing\|Stealth degradation]]


	[[Category:FRED Examples]]		[[Category:FRED Examples]]