You can emulate this by adding up time differences between rendering frames. When the framerate-driven accumulator reaches a certain value fire your action, and accumulate only when conditions are met.
Sent from my iPad > On Jul 2, 2014, at 02:21, William Squires <wsqui...@satx.rr.com> wrote: > > What would be the best way to make an NSTimer that could pause/un-pause its > timing? Subclassing? Containment? Just roll my own with > performWithSelector:afterDelay:? That is, if I (my code) creates a (smart) > NSTimer with a duration of 5 seconds, then three seconds later I need to > pause the timer, the timer should un-pause with 2 seconds left on it, not > revert back to a duration of 5 seconds. > > Use-case: > I have a (fictitious) FPS game in which the players or bots can "damage" the > scenery by leaving blast marks. A timer should remove these "decorations" > after a given delay, but I want the timers to pause if any players/bots are > within line-of-sight of the decorations. The timer should then un-pause once > all the players and bots are out of line-of-sight (self-repairing nanotech > scenery, anyone?) > With a normal timer, you'd have to [<timer> invalidate], and/or re-create a > new NSTimer instance, which would reset the time. > Another good use is a "smartly" timed weapon/power-up spawn point. If the > player (or a bot) is too close, the timer will pause, preventing the spawning > of the weapons/power-ups, but as soon as no players or bots are close by, the > timer will resume, and a new weapon or power-up will spawn there. This would > discourage "camping" around known spawn points! :) > > Or has this "wheel" already been invented? > > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/xcvista%40me.com > > This email sent to xcvi...@me.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
