Dual exhaust for subs - Page 2

Jimbuna · 07-12-07, 11:16 AM

Quote:

I really hope that you guys aren't making fun of this idea I came up with. I did it for several reasons:

I'd never dream of it

We have a little leg pull from time to time, that's one of the things that makes this site so popular

TheDarkWraith · 07-12-07, 06:23 PM

EDIT: larger pictures included now

Thanks to DD (

) I got the rotations worked out and have set the exhaust angles on both sides to 10 degees up and 10 degrees outward. I have also adjusted the opacity and other variables for the smoke to make it look, well, hopefully getting close to realistic. The locations are still tied to the props and once someone shows me how to edit positions with Maya or Wings3D I'll get that fixed.
Does anyone know how the exhaust ports were shaped on the sub? What were the angles of it leaving the skin of the ship? Was it pointing straight out, curved upward, swept down, etc? I'm trying to make this as realistic as I can.
Were both exhaust ports on the same side or different sides? This is still a WIP and once I get the details I can make the necessary adjustments.
Browsing the .dat file today it appears I should be able to use different smoke textures for this if I wanted to. The possibilities keep growing....

Here are some snapshots:

Mush Martin · 07-12-07, 06:53 PM

well done racerboy congratulations

MM

Maraz · 07-13-07, 03:01 AM

Did you manage to link the amount of smoke to the engine RPM? IIRC this was what Privateer was working at, just before you-know-what...

Maraz

Schöneboom · 07-13-07, 05:45 AM

Gute Arbeit, Racerboy!

For technical details about the exhaust system, one book springs to mind, "The Type VII U-Boat" in the "Anatomy of the Ship" series:

I'm almost certain this contains the info you need. I intend to get this book myself from Amazon, but if you can obtain it by interlibrary loan, or if someone here has it already, Bingo!

Mach's gut!

TheDarkWraith · 07-13-07, 10:24 AM

I haven't been able to link the amount of smoke to anything.......yet

I have an idea to try out today for it though.
Let me bounce this off of somebody. The sub's bow and stern wakes, how are they controlled?

Sailor Steve · 07-13-07, 11:07 AM

Quote:

Originally Posted by Racerboy

Thanks to DD (

) I got the rotations worked out and have set the exhaust angles on both sides to 10 degees up and 10 degrees outward.

I see that's what you were talking about in the first place.

It looks good so far.

sh3rules · 07-13-07, 03:43 PM

Looks good! A little less smoke so as not to obstruct the view of anything, but I'll use the smoke even if it's heavy. Great work!

Mush Martin · 07-13-07, 05:37 PM

The density he has it at shows up in Uzo but doesnt really interfere it
just adds a bit of feel,

d@rk51d3 · 07-13-07, 06:34 PM

Awesome work Racerboy, well done.

Werewolf · 07-14-07, 05:36 AM

Erhm....is it downloadable yet? It looks great racerboy

TheDarkWraith · 07-14-07, 05:59 PM

I'll give you all a downloadable VIIb version here shortly. It won't be speed dependant or anything. It will give constant smoke from each side which will cease when you submerge. I'm having trouble making the amount of smoke dependant on something. Privateer game me something to look at and while I was able to make 'smoke on the water' that WAS speed dependant it was just that - a texture placed on the surface of the water. I'm open for any ideas/suggestions.

I've also made a version with a ScalableParticleEffect and it does this:
-Ever noticed that when you start up the torpedoes training mission the stationary merchant puffs some smoke then stops? Well I got my mod to do it also and if you go to the bridge and look at the aft of the ship you see smoke from both sides which then tapers down to nothing after a few seconds (great!). Problem is I can't get it to start back up (not so great). So I have to tie this ScalableParticleEffect to something but more importantly SOMEHOW.
I looked into how the merchant and enemy ship's make their funnel smoke and that's where I got this idea. Take for instance the NDD_HuntI. This is from it's .sim file:

000000d0h: 0A 00 00 00 FF FF FF FF 1C 00 00 00 78 2A 27 74 ; ....ÿÿÿÿ....x*'t
000000e0h: 55 C0 E1 99 23 99 E7 60 5B 44 14 37 00 6F 62 6A ; UÀá™#™ç`[D.7.obj
000000f0h: 5F 46 75 6E 6E 65 6C 00 06 00 00 00 00 00 00 00 ; _Funnel.........
00000100h: 43 00 00 00 78 2A 27 74 55 C0 E1 99 00 00 00 00 ; C...x*'tUÀá™....
00000110h: 00 00 00 00 2F 00 00 00 2B 00 00 00 6F 62 6A 5F ; ..../...+...obj_
00000120h: 46 75 6E 6E 65 6C 00 0E 00 00 00 73 6D 6F 6B 65 ; Funnel.....smoke
00000130h: 00 6D D7 78 C0 00 4D 34 91 0A 00 00 00 73 68 61 ; .m×xÀ.M4‘....sha
00000140h: 66 74 00 00 00 00 ; ft....

basically it creates an instance of a new object with ID 782A277455C0E199. The parent ID is 99E7605B441437. Tag name is obj_Funnel.

Now the next part of hex code defines the data (or properties) of the new object:

total length of type 6 node is 00000043h
total lenth of data (properties) for obj_Funnel is 0000002Fh
it breaks down to this in a tree hierarchy form:

obj_Funnel (size of 0000002Bh bytes)
|
---- smoke 6DD778C0004D3491 <-- funnel_smoke ID from particles.dat
|
----- shaft 00000000

The funnel_smoke ID uses a ScalableParticleEffect which, I'm assuming, has to be linked to something to make it work. The obj_Funnel uses smoke from the funnel_smoke ID and it appears to be controlled (volume of smoke) by shaft. Why shaft has 00000000h after it boggles me. Before anyone asks I already tried that in the sub and it doesn't work. I'll keep playing with this speed dependant idea. If anyone has any information or knows someone who does please contact me.

TheDarkWraith · 07-14-07, 06:41 PM

Before I release the VIIb dual exhaust constant smoke mod I need agreement on the following things:

location of exhaust ports on each side
the angle at which the exhaust exits the exhaust port

Does everyone agree that where the cursor is pointing to in this picture is the exhaust port for the left side of the VIIb (looking from rear of sub):

Does everyone agree that where the cursor is pointing to in this picture is the exhaust port for the right side of the VIIb (looking from rear of sub):

Next, does everyone agree that the exhaust smoke exits the ports according to these photoshop'd pics I made:

If not, what do you all think they should be? This will be for both sides. :hmm:

AOTD_MadMax · 07-14-07, 07:56 PM

Hiho Racer,

the Exhaust is ok but i think they blowin more straigt down to the Waterline not such your picture shows in to the air .

Could you do the same to the VII C and for all other Boates ?

MFG

AOTD|MadMax

TheDarkWraith · 07-14-07, 09:03 PM

Sure, I'll make it for the other boats. Soon as I finish the VIIb I'll work on more. It's been a great learning experience to say the least!

07-12-07, 06:23 PM	#17
TheDarkWraith Black Magic Join Date: Jun 2007 Posts: 11,962 Downloads: 147 Uploads: 5	EDIT: larger pictures included now Thanks to DD ( ) I got the rotations worked out and have set the exhaust angles on both sides to 10 degees up and 10 degrees outward. I have also adjusted the opacity and other variables for the smoke to make it look, well, hopefully getting close to realistic. The locations are still tied to the props and once someone shows me how to edit positions with Maya or Wings3D I'll get that fixed. Does anyone know how the exhaust ports were shaped on the sub? What were the angles of it leaving the skin of the ship? Was it pointing straight out, curved upward, swept down, etc? I'm trying to make this as realistic as I can. Were both exhaust ports on the same side or different sides? This is still a WIP and once I get the details I can make the necessary adjustments. Browsing the .dat file today it appears I should be able to use different smoke textures for this if I wanted to. The possibilities keep growing.... Here are some snapshots: Last edited by TheDarkWraith; 07-14-07 at 03:37 PM.

07-12-07, 06:53 PM	#18
Mush Martin Eternal Patrol Join Date: Dec 2006 Posts: 4,398 Downloads: 4 Uploads: 0	well done racerboy congratulations MM __________________ RIP Mush Tutorial

07-13-07, 03:01 AM	#19
Maraz Navy Dude Join Date: Mar 2007 Location: Rome, Italy Posts: 177 Downloads: 0 Uploads: 0	Did you manage to link the amount of smoke to the engine RPM? IIRC this was what Privateer was working at, just before you-know-what... Maraz __________________ First career: VIIB U-54 Current career (Black Sea): IID U-24 GWX 2.1, U-Jagd Tools, 100% difficulty, manual targeting, DiD,

07-13-07, 05:45 AM	#20
Schöneboom Seasoned Skipper Join Date: Apr 2007 Location: San Francisco, CA Posts: 651 Downloads: 36 Uploads: 0	Gute Arbeit, Racerboy! For technical details about the exhaust system, one book springs to mind, "The Type VII U-Boat" in the "Anatomy of the Ship" series: I'm almost certain this contains the info you need. I intend to get this book myself from Amazon, but if you can obtain it by interlibrary loan, or if someone here has it already, Bingo! Mach's gut! __________________ Dietrich Schöneboom, U-431 "Es wird klappen, Herr Kaleun. Ganz sicher."

07-13-07, 05:37 PM	#24
Mush Martin Eternal Patrol Join Date: Dec 2006 Posts: 4,398 Downloads: 4 Uploads: 0	The density he has it at shows up in Uzo but doesnt really interfere it just adds a bit of feel, __________________ RIP Mush Tutorial

07-13-07, 10:24 AM	#21
TheDarkWraith Black Magic Join Date: Jun 2007 Posts: 11,962 Downloads: 147 Uploads: 5	I haven't been able to link the amount of smoke to anything.......yet I have an idea to try out today for it though. Let me bounce this off of somebody. The sub's bow and stern wakes, how are they controlled?

07-13-07, 03:43 PM	#23
sh3rules Sonar Guy Join Date: Aug 2006 Location: Sailing the Seas of Lies Posts: 393 Downloads: 24 Uploads: 0	Looks good! A little less smoke so as not to obstruct the view of anything, but I'll use the smoke even if it's heavy. Great work!

07-13-07, 06:34 PM	#25
d@rk51d3 Sea Lord Join Date: Sep 2006 Location: Adelaide, South Australia Posts: 1,953 Downloads: 207 Uploads: 0	Awesome work Racerboy, well done.

07-14-07, 05:36 AM	#26
Werewolf Sonar Guy Join Date: Jul 2003 Location: Europe Posts: 394 Downloads: 69 Uploads: 0	Erhm....is it downloadable yet? It looks great racerboy

07-14-07, 05:59 PM	#27
TheDarkWraith Black Magic Join Date: Jun 2007 Posts: 11,962 Downloads: 147 Uploads: 5	I'll give you all a downloadable VIIb version here shortly. It won't be speed dependant or anything. It will give constant smoke from each side which will cease when you submerge. I'm having trouble making the amount of smoke dependant on something. Privateer game me something to look at and while I was able to make 'smoke on the water' that WAS speed dependant it was just that - a texture placed on the surface of the water. I'm open for any ideas/suggestions. I've also made a version with a ScalableParticleEffect and it does this: -Ever noticed that when you start up the torpedoes training mission the stationary merchant puffs some smoke then stops? Well I got my mod to do it also and if you go to the bridge and look at the aft of the ship you see smoke from both sides which then tapers down to nothing after a few seconds (great!). Problem is I can't get it to start back up (not so great). So I have to tie this ScalableParticleEffect to something but more importantly SOMEHOW. I looked into how the merchant and enemy ship's make their funnel smoke and that's where I got this idea. Take for instance the NDD_HuntI. This is from it's .sim file: 000000d0h: 0A 00 00 00 FF FF FF FF 1C 00 00 00 78 2A 27 74 ; ....ÿÿÿÿ....x't 000000e0h: 55 C0 E1 99 23 99 E7 60 5B 44 14 37 00 6F 62 6A ; UÀá™#™ç`[D.7.obj 000000f0h: 5F 46 75 6E 6E 65 6C 00 06 00 00 00 00 00 00 00 ; _Funnel......... 00000100h: 43 00 00 00 78 2A 27 74 55 C0 E1 99 00 00 00 00 ; C...x'tUÀá™.... 00000110h: 00 00 00 00 2F 00 00 00 2B 00 00 00 6F 62 6A 5F ; ..../...+...obj_ 00000120h: 46 75 6E 6E 65 6C 00 0E 00 00 00 73 6D 6F 6B 65 ; Funnel.....smoke 00000130h: 00 6D D7 78 C0 00 4D 34 91 0A 00 00 00 73 68 61 ; .m×xÀ.M4‘....sha 00000140h: 66 74 00 00 00 00 ; ft.... basically it creates an instance of a new object with ID 782A277455C0E199. The parent ID is 99E7605B441437. Tag name is obj_Funnel. Now the next part of hex code defines the data (or properties) of the new object: total length of type 6 node is 00000043h total lenth of data (properties) for obj_Funnel is 0000002Fh it breaks down to this in a tree hierarchy form: obj_Funnel (size of 0000002Bh bytes) \| ---- smoke 6DD778C0004D3491 <-- funnel_smoke ID from particles.dat \| ----- shaft 00000000 The funnel_smoke ID uses a ScalableParticleEffect which, I'm assuming, has to be linked to something to make it work. The obj_Funnel uses smoke from the funnel_smoke ID and it appears to be controlled (volume of smoke) by shaft. Why shaft has 00000000h after it boggles me. Before anyone asks I already tried that in the sub and it doesn't work. I'll keep playing with this speed dependant idea. If anyone has any information or knows someone who does please contact me.

07-14-07, 06:41 PM	#28
TheDarkWraith Black Magic Join Date: Jun 2007 Posts: 11,962 Downloads: 147 Uploads: 5	Before I release the VIIb dual exhaust constant smoke mod I need agreement on the following things: location of exhaust ports on each side the angle at which the exhaust exits the exhaust port Does everyone agree that where the cursor is pointing to in this picture is the exhaust port for the left side of the VIIb (looking from rear of sub): Does everyone agree that where the cursor is pointing to in this picture is the exhaust port for the right side of the VIIb (looking from rear of sub): Next, does everyone agree that the exhaust smoke exits the ports according to these photoshop'd pics I made: If not, what do you all think they should be? This will be for both sides. :hmm:

07-14-07, 07:56 PM	#29
AOTD_MadMax Seasoned Skipper Join Date: Jun 2007 Location: Bremen/Germany Posts: 749 Downloads: 71 Uploads: 1	Hiho Racer, the Exhaust is ok but i think they blowin more straigt down to the Waterline not such your picture shows in to the air . Could you do the same to the VII C and for all other Boates ? MFG AOTD\|MadMax

07-14-07, 09:03 PM	#30
TheDarkWraith Black Magic Join Date: Jun 2007 Posts: 11,962 Downloads: 147 Uploads: 5	Sure, I'll make it for the other boats. Soon as I finish the VIIb I'll work on more. It's been a great learning experience to say the least!