Cursor "hotspots"

Erom · Post by **Erom** » 01 Jul 2006, 20:57

So I'm part way through creating a new set of cursors, just to move away from one bit of OTA IP, and to give mod makers a choice of cursors to use. The problem I am having is that the "hotspot", IE the actual pixel of the cursor image that is the location of the click, seems to be hardcoded to where it is in the OTA images.

For example, the default cursor (the arrow when you have nothing selected) has an active point at the top left pixel. This is all well and good when making a normal, windows-esque arrow for a cursor, but it would be nice if it was modifiable.

The active pixel for each type of cursors appears to be a set distance, in pixels from the top left of the image. Therefore unless our custom cursors follow the same general size as the OTA cursors they replace, they will not have the click point correctly positioned. Is there a configuration file somewhere I can edit, or is this hardcoded behavior?

If it's hardcoded, a patch such that Spring reads the active locations from a file in the anims directory might be in order. I know I will probably have to wright this myself, which will take a while (as I only know Java and Ada, chances are I'll have to learn a new language...)

Tobi · Post by **Tobi** » 01 Jul 2006, 21:34

It's hardcoded and it's either TopLeft (0,0) or Center (width/2, height/2).

The default cursor has it's hotspot TopLeft, all others have it in Center.

AF · Post by AF » 01 Jul 2006, 21:39

For the centre ones, couldnt you just make th image 4x bigger and work in the bottom right corner?

Erom · Post by **Erom** » 02 Jul 2006, 00:57

The fact that it is coded as width/2, height/2 and not set numbers is good enough for me to work with. That was a smart way to set it up devs. Shame I'll have to make a more traditional default cursor than I was planning, but maybe that's for the best anyway. More traditional == easier to use.

And yes AF, that would work for moving the ones set to center.

Erom · Post by **Erom** » 02 Jul 2006, 01:00

Hah, new issue. The number of frames in each animation has to at least be the number of frames in the OTA animation, doesn't it?

Tobi · Post by **Tobi** » 02 Jul 2006, 11:25

Hm, don't see anything hardcoded regarding # of frames, it just continues loading frames until all numbered bmps for that cursor are loaded.

Comp1337 · Post by **Comp1337** » 02 Jul 2006, 12:06

Meh, in the worst case just doulble it.

Erom · Post by **Erom** » 02 Jul 2006, 17:55

Yeah, I think the problem isn't in the code, it's just that I don't know how to remove the old cursors, so I'm not overwritting some of the OTA data. No matter, duplicating frames to fill the space only increases the fize by a matter of kilobytes.

Thank you for all the help, Tobi.

smoth · Post by **smoth** » 02 Jul 2006, 17:57

cool, glad to hear it is going well erom!

esteroth12 · Post by **esteroth12** » 02 Jul 2006, 18:00

Erom wrote:Yeah, I think the problem isn't in the code, it's just that I don't know how to remove the old cursors, so I'm not overwritting some of the OTA data. No matter, duplicating frames to fill the space only increases the fize by a matter of kilobytes.

Thank you for all the help, Tobi.

wow... didnt expect you to actually start using that word...

out of curiousity, what cursors are you making?

Post by **Tim Blokdijk** » 03 Jul 2006, 00:35

Xect vs. Mynn has custom cursors, you can take a look at it if you like to see how it's done.

Tobi · Post by **Tobi** » 03 Jul 2006, 09:41

I think you need to remove some otacontent dependency (the one with the cursors obviously) from the mod you are testing with (modinfo.tdf).

Gnomre · Post by **Gnomre** » 03 Jul 2006, 16:39

Yeah... it's quite easy and possible to change the cursors without any source change whatsoever. It has been since day one.

http://taspring.clan-sy.com/wiki/Mod_De ... nt:Cursors

Spring RTS Engine

Cursor "hotspots"

Cursor "hotspots"