HMD Trajectory Gun Sight

What is this?

This projects the weapon's trajectory onto the seat's HMD.
Implemented features

• Display of ballistics on the HMD.
  
• Ballistic prediction for the following weapons, MG/LAC/RAC/HAC/Battle/Artillery/Bertha/Rocket.
  
• Display of target markers at specified distances on the ballistic trajectory.
  
• Lead computing sight.
  

Unimplemented features

• Prediction of air density and gravity variations at high altitude.
  
• Prediction under water.
  
• Prediction of side wind.
  
• Predicting the weapon's RNG.
  
• Rocket's dispersion is probably large.
  

Installation

HMD Gun Sight

Main microcontroller.
Inputs & Outputs

• Seat phys. sensor
  Connect the physics sensor, which must be attached to the same body as the seat you want to use.
  
• Look X/Look Y
  Connect to the look direction node of the seat to be used.
  
• Gun data
  Receives data from the weapon side microcontroller.
  
• HMD
  Connects to the video input of the seat.
  
• video input
  Multiple weapon displays can be supported by daisy chaining to this input.
  
• Distance [m]
  Input of distance to target. A target marker is displayed at the specified distance of the ballistic trajectory.
  Entering a minus distance will display the target marker at the predicted position in the high-angle fire.
  This is the distance from the weapon, not from the seat.
  
• Target size [m]
  Sets the width of the ‘Trajectory Grid’ described below.
  This input is optional, if not entered, refer to the property ‘Default Target Size [m]’.
  
• Lead Computing Toggle
  Toggles the lead calculation on and off.
  

Settings

• phys. to head X/Y/Z [voxel]
  Set from the physics sensor to the position of the head.
  
• HUD Color R/G/B/Alpha
  Set basic display color
  
• HUD Accent Color R/G/B/Alpha
  Set highlight colour
  Used for Trajectory Tracer/Trajectory Grid.
  
• Trajectory only
  Show ballistics only.
  
• Decimation Rate [m]
  Thinning rate of ballistic rendering.
  
• Trajectory Tracer
  Rendering of virtual tracer bullets on the ballistic trajectory.
  
• Trajectory Grid
  Displays horizontal lines on the trajectory at specified intervals. The length varies with the input to Target Size.
  
• Trajectory Grid Interval [m]
  
• Default Target Size [m]
  
• Target Marker offset X/Y
  Set the display position for the specified distance and the number of seconds reached.
  
• Gun Marker
  Display arrows and their names on the weapon.
  
• Off-Screen Gun Marker
  Setting whether Gun Marker is displayed at the edge of the screen when the weapon leaves the screen.
  
• Lead Computing Sight
  
• Lead Smoothing
  Smoothing of vehicle movement acquisition. (0to0.99)
  Disable at 0. Do not set to 1.
  
• Max Prediction Ticks (-1 for no limit)
  Setting how many ticks to predict the movement of the vehicle.
  Do not set the value too high as this will cause lag.
  

HMD Gun Sight/Gun sensor and settings

Microcontroller on the weapon side. Sends information to the main microcontroller.
Inputs & Outputs

• Gun phys. sensor
  Connect the physics sensor attached to the same body as the weapon.
  
• Data to main mc.
  Connect to the main microcontroller (HMD Gun Sight).
  
• Distance to target [m]
  Input the distance to the target.
  

Settings

• Gun type
  Select the type of weapon.
  
• velocity magnification (for XML edit)
  For XML-edited weapons, multiply the initial velocity of the bullet.
  Usually does not need to be changed from 1.
  
• Muzzle offset X/Y/Z [voxel]
  Sets the position from the physics sensor to the muzzle.