Train Simulator

oog · Post by **oog** » Jul 10, 2011 21:13

I'm actually working on a train simulator. The simulator uses 2D vector graphics and allows multiple zoom levels.
It's work in progress. There is no user interface. Don't expect too much. It's not more than a simple demo.

Screenshot of Version 0.30

You can download the actual source code and Windows exe-file from proog.de. Pleas click on the flags - proog.de supports google translation (Java-script required).

http://proog.de/joomla/index.php/projekte/62-trains

h4tt3n · Post by **h4tt3n** » Jul 11, 2011 6:03

Hey, that's really awesome! I like the way you've smoothed out the rails. Looking forward to seeing how this develops.

Cheers,
Mike

agamemnus · Post by **agamemnus** » Jul 11, 2011 17:09

Nice, nice. Keep going...

rugxulo · Post by **rugxulo** » Jul 11, 2011 21:36

Impressive!! Nice job!!

pestery · Post by **pestery** » Jul 12, 2011 4:08

Looks good.

Landeel · Post by **Landeel** » Jul 12, 2011 11:32

Looks very professional.
Nice job!

oog · Post by **oog** » Jul 12, 2011 18:10

Thank you for your comments.

Actually I'm trying to get bitmaps as background maps working. I hope to get it stable this weekend.
(Actually no download, just two screenshots)

oog

kiyotewolf · Post by **kiyotewolf** » Jul 13, 2011 23:17

How are you managing the keeping the little trains on the little tracks?
What kind of container are you using to dictate where the tracks connect, and maintaining their position to always be on a track?
Or else, they fall off the tracks, then they crash, and grow exponentially larger orange pixels which represent fire.

~Kiyote!

Landeel · Post by **Landeel** » Jul 14, 2011 0:19

Or else, they fall off the tracks, then they crash, and grow exponentially larger orange pixels which represent fire.

LOL
Maybe a particles system.

oog · Post by **oog** » Jul 14, 2011 5:38

kiyotewolf wrote:How are you managing the keeping the little trains on the little tracks?
What kind of container are you using to dictate where the tracks connect, and maintaining their position to always be on a track?

Every train just stores it's position related to the track. The position of the train will be calculated from the track's position.

kiyotewolf wrote:Or else, they fall off the tracks, then they crash, and grow exponentially larger orange pixels which represent fire.

That would be pretty cool.
When you run the program, you will find some tracks with an open end (number 9, 10 and 11).
Actually the trains just change the direction.
There is no collision detection at the moment. So you can drive different trains on the same track and let the trains drive over another.

Edit: correcting typos.

kiyotewolf · Post by **kiyotewolf** » Jul 14, 2011 5:44

The position of the train is calculated from the track's position.

The UDT for the track's position seems clever & complex, I'm curious how you did it.

~Kiyote!

oog · Post by **oog** » Jul 14, 2011 19:38

About drawing trains.

I use strings to define vector graphics items like trains and buildungs. The characters of the string stand for graphics commands and parameters.

There are some subroutines, that help building the string similar to graphics commands.

iAddColor(col) for example adds a color(col) command to the string.

There are also Zoom-Commands iAddZoomIn and iAddZoomOut. They are used to show more or less details in different zoom levels.

Example:

w.iBuild(i)= _
iVehicle _
+iAddZoomOut(200) _
+iAddColor(1) _
+iAddLine(-20,-70,20,70) _
+iAddLine(20,-70,-20,70) _
+iAddZoomIn(200) _
+...

Every vector item will be placed on the screen with two pair of coordinates (PointA and PointB).

A coordinate is a 8 bit value. PointA and PointB are located at (-100,0) and (+100,0) within a (-128,-128) - (127,127) grid. For a train, PointA and PointB represent the axis (wheels).

Test for yourself:

You can place a new item at the cursor position by pressing "n" (new item). A Building will appear under the mouse cursor.

Then click with the left mouse button to select the object (use a short click).
There will appear a yellow circle around PointA and a blue one around PointB.

Press + or - to change the item (other building, train, etc.).
Click into a point marker, hold down the mousebutton and drag it. PointA moves the item while PointB change size an direction.

Press "del" to remove the item, or click outside a Point marker to deselect the item.

The next program version will have a more stable drag function, actually you should not move the mouse too fast while dragging.

oog · Post by **oog** » Jul 17, 2011 13:21

There's a new version available for download.

V 0.32a support bitmaps as background images. You can get the "London Maps" extension as a separate download.

London Maps contain seven maps. You can smoothly zoom from London City to South England.

Maps by OpenStreetmap.

I hope, you like it.

oog · Post by **oog** » Jul 17, 2011 17:41

How to use your own bitmap.

For an example, take a screenshot of the FreeBASIC Forum logo and save as "data/fblogo.bmp".

Then edit the "data/trainini.txt" file like in the example.

Code: Select all

groundcolor
  0xd0d0c0

#
# load bitmap
#

loadbmp
  1              # bmp 1
  fblogo.bmp

#
# place map on screen
#

newmap
  1              # place map 1
  logo
  1              # use bmp 1
  1_000_000_000  # position x
  1_000_000_000  # position y
  10_000         # scale, 1 pixel = 10 m
  10             # zoom min
  200_000        # zoom max

After running the trainxxx.exe, press "m" to show the background map.
You will see the logo in the background.

Then you can build your own track. Example for a "horse track"

super_castle · Post by **super_castle** » Jul 18, 2011 8:46

Jup...., wonderfull the train.....
gruss