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Toumal

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About Toumal

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    Second Lieutenant
  • Birthday 09/19/1979

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    Austria

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  1. Toumal

    Stealth: A retro-style F117A simulator

    Unity and C#.
  2. Toumal

    Stealth: A retro-style F117A simulator

    You can't, unless you or someone else is willing to contribute.
  3. Toumal

    Stealth: A retro-style F117A simulator

    Just a quick update: I haven't been able to do get much done recently because, well, most of the core systems work but there's a lot of small tasks to do and so far I haven't gotten any contribution from others. So at this point my question is: Is anyone willing to join and help?
  4. Toumal

    Stealth: A retro-style F117A simulator

    Oh I have the data and all that. It's just that unity isn't built for this, and the typical workarounds only work for singleplayer. The reason is simple: Most workarounds involve shifting the world origin, or rather, all the objects in the world, so that whatever you see in the game happens close to the 0/0/0 point. This works fine and dandy, but there's two problems: 1) You need to shift by a round number, because of floating point precision. So that means that each tile has to be a round number. And getting real world data in is trouble enough, but it seems like there's no good way to ensure that each imported terrain tile is sized just right so that shifting things around doesn't leave holes or overlaps or otherwise jitter around. 2) Unity networking knows nothing about the shift offset. So whenever I shift, the result is that position updates from the server are coming in as real coordinates, and are applied to objects directly. I tried hooking into the code to apply the shift afterwards, but that didn't work, and the only solution I can see is to have a set of ghost objects that are invisible which are handled by unity networking, and copy the positions plus offset to the real objects. But that's a can of worms.
  5. Toumal

    Stealth: A retro-style F117A simulator

    I have some bad news. For the time being, I have decided that using real terrain data is out of scope for me. I'm still the only guy working on this and in the past month I've learned that there's definitely a large amount of overpromise and overconfidence in the Unity community. Lots of assets that promise solutions just plain don't work, or only work in a few select cases, with their authors promising the world and being able to deliver very little. To give you an example, I've worked on double precision stuff for quite some time, and Unity doesn't support double precision. So you have to implement workarounds to get this working. I had such a workaround written myself but ran into issues with multiplayer. I found an asset that was quite expensive and the author stated that they have this working in multiplayer too. Lo and behold, turns out they never even thought this through, and not only does it not work, they haven't even considered the problems that I ran into the moment I tried to use it in multiplayer. So as it turns out I'd have to replace most of unity's network code with my own, and frankly I'm not going to do that. So for now, I'm dialing this back to what I had originally planned: A procedurally generated world with a limited mission area. Unless of course someone experienced wants to join and help me tackle this.
  6. Toumal

    Stealth: A retro-style F117A simulator

    What I do know is that GOG comes with dosbox, which basically means they work even for people with no technical skills. Of course you don't get MT-32 emulation or any of that fancy stuff preconfigured, but you can always add that yourself (as well as hunt for those roland firmware files...)
  7. Toumal

    Stealth: A retro-style F117A simulator

    7 bucks for a DOS game that had DRM added to it? I don't think so. Plus it's just 2 Euros on GOG, without DRM. A no-brainer, if you ask me.
  8. Toumal

    Stealth: A retro-style F117A simulator

    Unfortunately OSM doesn't seem to have much data on Iraq. I hope to get the roads in at some point, but eh. Right now I'm battling with getting a decent terrain texturization. And also the floating point stuff is a bit tricky to get working in multiplayer, so that's holding me up a bit too. You'll get a demo as soon as one can fly a full mission, including placement of ground features, mission success criteria, terrain impact damage, proper death handling, and of course the floating point stuff fixed.
  9. Toumal

    Stealth: A retro-style F117A simulator

    Unity does not support double precision unfortunately. That would make things much easier for me. I have to work around that sadly. EDIT: BTW love TFXplorer, looks amazing!
  10. Toumal

    Stealth: A retro-style F117A simulator

    Oh I am busy working on the game, don't worry! I've started on the OPFOR C3 network simulation, which is just a fancy way of saying that I aim to reproduce the "bomb triggered AAA" phenomenon of the first iraq war, where the first destroyed target caused all the defenses in the vincinity to start firing more or less blindly. I'm extending that to radar detections, however brief, causing your trajectory to be relayed to nearby defenses. In essence, AAA will be very deadly if they get a bead on you, but also worrysome if they just have an approx position. There's two major items that I've been procrastinating until now: Generating ground features / targets, and floating point precision. The first one I'm trying to address now via real life data. I've been asked multiple times for realistic location and terrain data, and well... The textures will be replaced by a splatmap system, so they're just for illustration. But I've got the whole of Iraq: I've also been able to significantly reduce system requirements. But as you can see, real terrain elevation is a lot less interesting than my procedurally generated terrain, especially for the southwest of Iraq which is mostly flat desert. On the plus side I can now draw from real data and derive the positions of airbases, air defenses at the time of the start of the war, as well as roads. For the sake of gameplay, I will not model the actual base location of the F117-A's at that time, because that would involve a trip across the entirety of Saudi Arabia, complete with mid-air refueling. A single mission would take 5-7 hours, which I don't think is what I want to aim for here. Similarly, I am not going to even try to compete with games like DCS when it comes to fidelity of ground features. The second big thing I'm tackling right now is really the bane of simulator game developers all over the world: Floating point precision. Simply put, no traditional game engine is designed for handling game areas that are more than 10 - 20 sq km in size. We're in the hundreds of square kilometers and the result is that airplane physics, collision detection and all kinds of other things start to go horribly wrong once you leave the center area. The reason is simply that float32 values start to lose a lot of precision once you go beyond a certain range. Right now I'm busy on making sure that this limitation is not affecting the game in any way. I've got the basics working for singleplayer, but I still need to put in work to make this compatible with multiplayer.
  11. Toumal

    Stealth: A retro-style F117A simulator

    Didn't have much time today and flying to Rome for the next two days, so the only things I've done today are MFD symbology for AAA as well as dotted circles for pulse radar. Next up will be vehicle death handling, terrain collision damage, and I think I'll do the menu and server browser real soon too.
  12. Toumal

    Stealth: A retro-style F117A simulator

    Yeah don't worry, I'll dial it down a bit. Modding would be nice but realistically I don't see this happening. The effort for making an extendable structure is considerable, since we're not just talking about new meshes but also cockpit integration, MFDs, etc... However there's always room for someone with unity experience to join in and make more planes, or even modding, happen. In fact, I did write things in a way that makes it possible to support human players on the opfor side as well. In particular I am working on a C3 network that shares information about spotted contacts, which would be trivial to display on a fighter MFD. Whether or not that is fun to play I don't know. It'll be a lot of work to balance this for human opfor players. For now my goals are more modest: One flyable plane, one theater, and for the first tests just a single mission with two high value targets and several air defenses. Depending on how many players join the game, there will be fewer or more enemy forces to contend with. One big thing on my list are enemy air forces. That's something that is potentially extremely complex to implement properly, plus it's not really a realistic scenario. But I do want to get to a point where being spotted causes forces to be deployed against you, even if no SAM or AAA manages to get tracking lock on you or launch any missiles. Being spotted should have consequences in this game.
  13. Toumal

    Stealth: A retro-style F117A simulator

    Update for today: I've started work on AAA guns. No MFD symbology yet, explosion and damage radius still missing, but you can see that the aiming works pretty well. I've also added some visual spice to make those tracer rounds really pop.
  14. Toumal

    Stealth: A retro-style F117A simulator

    Update for today: x) fixed multiplayer radar processing x) fixed multiplayer RWR sound handling x) fixed player aircraft bouncing around on spawn x) fixed missile launches activating weapon cam MFDs on all clients x) fixed SAM launcher rotation not being synchronized Known issues: Explosion VFX not synced to clients Explosion SFX not synced to clients Terrain collision does not result in damage/destruction yet Player aircraft is just deleted on destruction, should implement proper death handling (possibly observer mode?) Tactical map does not display fellow coop players SAM launchers still rotate their turret towards a target even though they no longer have tracking lock Still to implement: AAA (guns, ZSU, with tracer projectiles) AAA (heavy flak with airburst) SAM C3 information network (one SAM discovering you should inform nearby air defenses) AAA barrage (untargeted fire near your approx trajectory if you were detected or destroyed something nearby) Main menu NAT Traversal Server List Ground features generation Proper exterior model (with landing gear and movable control surfaces) Proper cockpit model
  15. Toumal

    Stealth: A retro-style F117A simulator

    Don't praise me yet! Turns out I was simply lucky that stuff like FLIR target designation, SAMs, etc worked - they were in fact not synced properly. Took me a few hours to figure out syncing of the currently designated FLIR target and making SAM launchers work consistently across clients. What's still not done is making RWR/launch warning sounds only play for the airplane that is affected by it, and... uh... I broke the weapon camera mfd in multiplayer. Tactical map works but doesn't display any player objects yet. Oh and the SAM radar logic currently runs on all clients and the server, which is not good because the radar pulses hit you at different times from what the server sees. So still quite some work to do before I can even think about sending this to a friend to do some online testing. EDIT: Weapon cam works again now.
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