FOSS gamedev and creative worlds

Please note: This mod is abandoned. A new project ("vehicles") has been created @GitHub

Hello everyone,
although there are already some car mods, I release the indev version of my very own one. It does not base on other mods, like boats or hovercraft; it was coded completely by me.
Using melkor's car01 model, it focusses on realistic physical behaviour. Well, at least it will do this one day (it isn't perfect yet). The goal is to improve them step by step and once the mod works well, it will be added to my StreetsMod.

Spawn the car using /spawnentity streets:melcar

Licenses:
./models : CC-BY-NC-SA
Code: CC-BY-SA

Download:
Github Repo
Download zip from GitHub


Two Melcars meeting at an intersection


Driver's perspective

The cars:

Melcar:

Maximimum speed: 35 n/s = 126 kn/h (nodes/second; kilonodes/hour)
Acceleration Factor: 6.25
Deceleration Factor: 4.5
BrakeFactor: 9
Stepheight: 0.5
Gears: automatic (N, D (R)) <- not yet available

[u]Videos[{U]

(Might not be up-to-date)
Riding a Melcar (May 19, 2014)
Rubenwardy riding a melcar (May 17, 2014)

Testing now. :) I'm glad to see you got through with this.

philipbenr wrote:Testing now. :) I'm glad to see you got through with this.

Yes, I am very very proud. Sometimes, the car goes crazy, but at least it drives :D

Problem: how do I enable? I have tried many different ways....

philipbenr wrote:Problem: how do I enable? I have tried many different ways....

Oops, forget to explain that... I'll add it to first post :O

it won't load or run the mod what should it be named as

i love minetest wrote:it won't load or run the mod what should it be named as

This mod is indev. I wouldn't suggest you using it XD

Anyway, unzip it into the mods directory; rename it 'cars'.

Now fire up minetest, go to the mod config, enable this mod, open your world, type /spawnentity streets:melcar

If it works, gimme a high five.

---------------------------------------------------------------------------------

I checked out the code. It is the neatest code I've ever seen for a mod XD. Great work!

In https://github.com/webdesigner97/cars/blob/master/init.lua#L166 , you might want to set the deceleration rate by checking which block it is on. You could try setting a higher decel rate for stuff like sand and a lower one for asphalt.

And in here: https://github.com/webdesigner97/cars/blob/master/init.lua#L139
You could try changing the acceleration vector's angle, or add a perpendicular vector to the acceleration vector.

hoodedice wrote:

i love minetest wrote:it won't load or run the mod what should it be named as

This mod is indev. I wouldn't suggest you using it XD

Anyway, unzip it into the mods directory; rename it 'cars'.

Now fire up minetest, go to the mod config, enable this mod, open your world, type /spawnentity streets:melcar

If it works, gimme a high five.

---------------------------------------------------------------------------------

I checked out the code. It is the neatest code I've ever seen for a mod XD. Great work!

In https://github.com/webdesigner97/cars/blob/master/init.lua#L166 , you might want to set the deceleration rate by checking which block it is on. You could try setting a higher decel rate for stuff like sand and a lower one for asphalt.

And in here: https://github.com/webdesigner97/cars/blob/master/init.lua#L139
You could try changing the acceleration vector's angle, or add a perpendicular vector to the acceleration vector.

Yes, different decels for differetn nodes are planned. And thx for the compliment :D All this vector stuff is quite new to me and I think I need to learn a lot about it, but one day this will be a real working car mod.

Edit: The interesting part of this mod is that I can try to use what I learned in my physics class :D

The interesting part of this mod is that I can try to use what I learned in my physics class :D

=D How did you guess I knew about vectors on my end? Physics ofcourse!

Wow, that's a nice car!
Would it be possible to change the yaw of a player too while pressing left or right?
Irritates me a bit when only the car turns, but not me :3

Krock wrote:Wow, that's a nice car!
Would it be possible to change the yaw of a player too while pressing left or right?
Irritates me a bit when only the car turns, but not me :3

Sure, will be added as soon as the physics work :)

webdesigner97 wrote:

hoodedice wrote:

i love minetest wrote:it won't load or run the mod what should it be named as

This mod is indev. I wouldn't suggest you using it XD

Anyway, unzip it into the mods directory; rename it 'cars'.

Now fire up minetest, go to the mod config, enable this mod, open your world, type /spawnentity streets:melcar

If it works, gimme a high five.

---------------------------------------------------------------------------------

I checked out the code. It is the neatest code I've ever seen for a mod XD. Great work!

In https://github.com/webdesigner97/cars/blob/master/init.lua#L166 , you might want to set the deceleration rate by checking which block it is on. You could try setting a higher decel rate for stuff like sand and a lower one for asphalt.

And in here: https://github.com/webdesigner97/cars/blob/master/init.lua#L139
You could try changing the acceleration vector's angle, or add a perpendicular vector to the acceleration vector.

Yes, different decels for differetn nodes are planned. And thx for the compliment :D All this vector stuff is quite new to me and I think I need to learn a lot about it, but one day this will be a real working car mod.

Edit: The interesting part of this mod is that I can try to use what I learned in my physics class :D

yay it worked ps how do I delete it

i love minetest wrote:yay it worked ps how do I delete it

The ride? Keep punching it. To see the remaining health it has, watch the debug console.

hoodedice wrote:To see the remaining health it has, watch the debug console.

Or press F5 (and look at the car).

As already said, this mod is not meant to be used on "real" worlds. It isn't finished ^^

Any new updates to this awesome mod?

neron wrote:Any new updates to this awesome mod?

Currently not, but pls don't think it's dead. I just don't have the time to continue at the moment...

Wornt work just says fails to run or load and if I change it to cars the file when it's loading it just quits me please help

Although the mod is quite unstable, crashes should not appear. Can you provide a full error message from the debug.txt?

Update, Update!

The first alpha version (Download from GitHub) is available for public testing. Please don't use this in your "real playing worlds", it might cotain bugs.

What changed?
-> Rework acceleration to not use self.object:setacceleration() which caused odd behaviour
-> Remove gears and RPM
-> Tweaked Physics
-> Added a HUD

Please feel free to test it and please report bugs here or in the GitHub Repo, thanks!

Update to master: Added automatic gears (D, N). R coming soon.

Download latest Zip to check it out.

Fixed car driving in wrong direction. I calculated the speed vector in a method that only works with degrees, but Minetest uses radians.

Fun fact: A melcar needs 8.5 nodes to stop from high speed.

I made a video.

https://www.youtube.com/watch?v=jRZ9gtHWqlc

rubenwardy wrote:I made a video.

https://www.youtube.com/watch?v=jRZ9gtHWqlc

Really cool! I'll add it to first post later (with credits!)

I figured out something with the cars moving if you have multiple out:

Use

Once the variables are local, they will NOT ACT AND INTERFERE WITH OTHER CARS OF THE SAME COLOUR!

Jordach wrote:I figured out something with the cars moving if you have multiple out:

Use

Your phone or window isn't wide enough to display the code box. If it's a phone, try rotating it to landscape mode.

Code: Select all

 local variablename = "string text or number"

Once the variables are local, they will NOT ACT AND INTERFERE WITH OTHER CARS OF THE SAME COLOUR!

You mean inside the entity definition?

webdesigner97 wrote:

Jordach wrote:I figured out something with the cars moving if you have multiple out:

Use

Your phone or window isn't wide enough to display the code box. If it's a phone, try rotating it to landscape mode.

Code: Select all

 local variablename = "string text or number"

Once the variables are local, they will NOT ACT AND INTERFERE WITH OTHER CARS OF THE SAME COLOUR!

You mean inside the entity definition?

Yes. As well as in the functions else where. Any sort of leak like that can affect everything else, that's why the mobs in simple mobs don't move in the same directions.

Jordach wrote:

webdesigner97 wrote:

Jordach wrote:I figured out something with the cars moving if you have multiple out:

Use

Your phone or window isn't wide enough to display the code box. If it's a phone, try rotating it to landscape mode.

Code: Select all

 local variablename = "string text or number"

Once the variables are local, they will NOT ACT AND INTERFERE WITH OTHER CARS OF THE SAME COLOUR!

You mean inside the entity definition?

Yes. As well as in the functions else where. Any sort of leak like that can affect everything else, that's why the mobs in simple mobs don't move in the same directions.

Thank you for trying to help! But now I did it the same way as in boats (or is there something I didn't see?), and it still moves all cars... Here's the code

Doesn't work fales to load and run please fix

jacobwellz wrote:Doesn't work fales to load and run please fix

Okay, how do you expect anyone to fix anything with just a "fales to load and run please fix"? Give us more information.