Line of Sight question

How do you get line of sight to work? I'm trying to change the colour of a tile when it's in sight, but it seems to randomly change the colour of every single tile (regardless of whether it's in sight or not).

My code:

<img src="http://dl.dropbox.com/u/1024727/caps/lineofsight.PNG" border="0" />

My cap:

dl.dropbox.com/u/1024727/caps/lineofsight.cap

Main issue is needing a 'for each' on the land and having the line of sight events as subevents.

This improves it a lot, but it still flashes on some tiles when moving around.

Thanks, that works well. Pity you have to use "for each" though, with hundreds of tiles it slows it down a bit.

Have you adjusted the range etc?

A general word about LOS:

The line of sight behavior isn't designed well for use with multiple-instances-objects.

For each loop:

The for each object loop shouldn't slow it down noticable, if at all. An action with a multiple-instances-object will loop through the instances anyway.

Something like

+ land: Value 'somevar' Equal to 1

-> land: Set filter to somecolor

will execute at the same speed than

+ For each land

++ land: Value 'somevar' Equal to 1

--> land: Set filter to somecolor

Is there an easy way to make my own Line of sight thing then? (doesn't seem to work well with angled objects, especially isometric tiles)

Line of sight is pretty much straight-forward, you can always replicate it with events or python.

Have a look at this thread and scroll to my "cone of view" example (cap included):

scirra.com/forum/solved-custom-lineofsight-issue_topic43661.html

Thanks I'll look into it.