rangefinder.c

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class Rangefinder extends PoweredOptic_Base
{
 static const float RANGEFINDER_MAX_DISTANCE = 913.4856; //TODO adjust maximal distance to match real life rangefinder
 
 protected ref Timer m_Timer;
 protected TextWidget m_RangeText;
 
 void Rangefinder()
 {
 }
 
 // How frequently the measurement should be taken
 float GetMeasurementUpdateInterval()
 {
 return 0.5;
 }
 
 override void OnWorkStart()
 {
 if( !GetGame().IsDedicatedServer())
 {
 PlayerBase player_this = PlayerBase.Cast( GetGame().GetPlayer() );
 PlayerBase player_owner = PlayerBase.Cast( GetHierarchyRootPlayer() );
 
 if ( player_this == player_owner )
 {
 StartPeriodicMeasurement();
 }
 }
 }
 
 override void OnWorkStop()
 {
 if( !GetGame().IsDedicatedServer())
 {
 PlayerBase player_this = PlayerBase.Cast( GetGame().GetPlayer() );
 PlayerBase player_owner = PlayerBase.Cast( GetHierarchyRootPlayer() );
 
 if ( player_this == player_owner )
 {
 StopPeriodicMeasurement();
 }
 }
 }
 
 void StartPeriodicMeasurement()
 {
 if( !m_Timer )
 {
 m_Timer = new Timer( CALL_CATEGORY_GAMEPLAY );
 }
 
 m_RangeText = TextWidget.Cast( GetGame().GetWorkspace().CreateWidgets( "gui/layouts/gameplay/rangefinder_hud.layout" ) );
 
 m_Timer.Run( GetMeasurementUpdateInterval(), this, "DoMeasurement", null, true );
 }
 
 void StopPeriodicMeasurement()
 {
 if( m_Timer )
 {
 m_Timer.Stop();
 }
 
 if (m_RangeText)
 {
 delete m_RangeText;
 }
 }
 
 // Measures the distance and returns result in formated string
 void DoMeasurement()
 {
 PlayerBase player = GetPlayer();
 
 if ( player )
 {
 vector from = GetGame().GetCurrentCameraPosition();
 vector to = from + (GetGame().GetCurrentCameraDirection() * RANGEFINDER_MAX_DISTANCE);
 vector contact_pos;
 vector contact_dir;
 int contactComponent;
 
 DayZPhysics.RaycastRV( from, to, contact_pos, contact_dir, contactComponent, NULL , NULL, player, false, false, ObjIntersectIFire);
 
 // Generate result
 float dist = vector.Distance( from, contact_pos );
 dist = Math.Round(dist);
 
 if (dist < RANGEFINDER_MAX_DISTANCE)
 {
 if( dist < 10 )
 m_RangeText.SetText( "00" + dist.ToString() );
 else if( dist < 100 )
 m_RangeText.SetText( "0" + dist.ToString() );
 else
 m_RangeText.SetText( dist.ToString() );
 }
 else
 {
 m_RangeText.SetText( "- - -" );
 }
 }
 }
 
 override void SetActions()
 {
 super.SetActions();
 
 RemoveAction(ActionViewOptics);
 AddAction(ActionViewBinoculars);
 }
 
 override void OnDebugSpawn()
 {
 GetInventory().CreateInInventory( "Battery9V" );
 }
}