I've been working on a new HUD in Instrumentation/HUD/. It's steadily
improving, but occasionally something turns out to require more work
than I had thought before. Here's a list of working new features:
- unified XML. There is no longer a top-level file that loads special
item groups, but only one type. It can contain all items directly,
or import other instruments or instrument sets. These can load others,
etc. One can create a new HUD by writing an XML file that imports
another, complete HUD and only adds a few labels. Or one can start
fgfs with one single instrument as new standalone HUD.
- the coordinate system is stil based on 640x480, but the origin is
now in the middle of the screen, so it's much easier to place items
symmetrically
- items don't (by default) use coordiniates that put them where they
are located in current HUDs. The turn-bank-indicator instrument file
doesn't put itself centered at the bottom, but rather at 0/0. The final
place is fixed at import time. Each item is placed relative to its
parent.
- each item has a <condition> that can hide/unhide it. That way elements
can be acticated via property system.
- labels can blink, depending on another <condition>. So the G-Load
can start blinking when the pilot's acceleration falls under/raises
over a certain limit. It's the same <condition> logic that's used
in animations, so it's very powerful.
- every property can be used as input to an instrument (except for all
those funky ADA/ladder elements. Still thinking about that.) A factor
and offset can be applied to it, the final value can be clamped to
min/max values.
- instrument options are now no longer OR'ed flags that have to be
picked from README.xmlhud, as in <options>11</options>. Instead
this can be done in human-readable form:
<option>vertical</option>
<option>autoticks</option>
<option>bottom</option>
- the HUD file itself can define if it's a 3D HUD or 2D HUD. No need
to set that in the main tree. This is optional.
- the G-Load for the f16 is no longer inverted ;-)
- everything cleaned up and pressed into classes :-)
- in --log-level=info one gets a funky file tree. Currently that's
the following for the default HUD:
load Huds/default.xml
|__import Huds/Instruments/turn-bank-indicator.xml
| |__turn-bank-indicator: "Turn Bank Indicator"
|
|__import Huds/Sets/coordinates.xml
| |__import Huds/Instruments/latitude.xml
| | |__label: "Latitude"
| |
| |__import Huds/Instruments/longitude.xml
| |__label: "Longitude"
|
|
|__import Huds/Instruments/compass.xml
| |__tape: "Gyrocompass"
|
|__import Huds/Sets/controls.xml
| |__gauge: "Aileron"
| |__gauge: "Elevator"
| |__gauge: "Rudder"
| |__gauge: "Throttle"
| |__gauge: "Elevator Trim"
|
|__import Huds/Sets/parameters.xml
| |__import Huds/Instruments/gload.xml
| | |__label: "G Load"
| |
| |__tape: "AMSL"
| |__tape: "RadioAltimeter"
| |__tape: "KIAS"
|
|__import Huds/Sets/autopilot.xml
| |__label
| |__label
| |__label
| |__label
| |__label
| |__label
| |__label
| |__label
| |__label
| |__label
| |__label
| |__label
| |__label
|
|__import Huds/Instruments/ladder.xml
| |__ladder: "Pitch Ladder"
|
|__import Huds/Instruments/runway.xml
|__runway: "Runway"
TODO:
- solve ADA/ladder input problem (many channels)
- make switchable units work again (metric/imperial)
- rewrite hud_card?
- convert all old HUDs
- more cleanup
m.
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