ef2gamesource/dlls/game/stationaryvehicle.cpp

//-----------------------------------------------------------------------------
//
//  $Logfile:: /EF2/Code/DLLs/game/stationaryvehicle.cpp                     $
// $Revision:: 8                                                              $
//   $Author:: Singlis                                                        $
//     $Date:: 9/26/03 2:36p                                                  $
//
// Copyright (C) 1997 by Ritual Entertainment, Inc.
// All rights reserved.
//
// This source is may not be distributed and/or modified without
// expressly written permission by Ritual Entertainment, Inc.
//

#include "stationaryvehicle.hpp"
#include "player.h"


CLASS_DECLARATION(Vehicle, StationaryVehicle, NULL)
{
	{ NULL, NULL }
};



//-----------------------------------------------------
//
// Name:		StationaryVehicle
// Class:		StationaryVehicle
//
// Description:	
//
// Parameters:	
//
// Returns:		
//-----------------------------------------------------
StationaryVehicle::StationaryVehicle()
{
	_yawDeltaDegrees	= 0.0f;
	_pitchDeltaDegrees	= 0.0f;

}


//-----------------------------------------------------
//
// Name:		~StationaryVehicle
// Class:		StationaryVehicle
//
// Description:	
//
// Parameters:	
//
// Returns:		
//-----------------------------------------------------
StationaryVehicle::~StationaryVehicle()
{

}



//-----------------------------------------------------
//
// Name:		Postthink
// Class:		StationaryVehicle
//
// Description:	Updates the vehicle location based upon the user input.
//
// Parameters:	None
//
// Returns:		None
//-----------------------------------------------------
void StationaryVehicle::Postthink()
{
	if(drivable)
	{
		turnangle  = turnangle   * 0.25f + turnimpulse;
		pitchangle = pitchangle  * 0.25f + pitchimpulse;
		
		float turn = turnangle	 *	( 1.0f / 200.0f );
		float pitch = pitchangle *	( 1.0f / 200.0f );

		avelocity *= 0.05f;
		avelocity.y += turn  * 200.0f;
		avelocity.x += pitch * 200.0f;
		
		angles += avelocity * level.frametime;
		setAngles(angles);
	}

	PositionVehicleAndDriver();

}

//-----------------------------------------------------
//
// Name:		PositionVehicleAndDriver
// Class:		StationaryVehicle
//
// Description:	Positions the vehicle and driver of the vehicle. This positioning is based
//				upon the amount of delta angles the user has moved the mouse. 
//				Pitch and yaw restrictions can be set through the tiki file to restrict the players
//				view angles.
//
// Parameters:	None
//
// Returns:		None
//-----------------------------------------------------
void StationaryVehicle::PositionVehicleAndDriver(void)
{	
	if(driver == 0)
		return;

	if(!driver->isSubclassOf(Player))
		return;

	Vector i,j,k;
	i = Vector( orientation[ 0 ] );
	j = Vector( orientation[ 1 ] );
	k = Vector( orientation[ 2 ] );

	Player * player;
	player = ( Player * )( Sentient * )driver;
	player->setOrigin( origin + ( i * driveroffset[PITCH] ) + ( j * driveroffset[YAW] ) + ( k * driveroffset[ROLL] ) );

	if(!drivable)
		return;

	player->velocity = vec_zero;

	//Adjust the pitch and normalize the degrees based upon the location of our pitch seam
	angles[PITCH] += _pitchDeltaDegrees;
	angles[PITCH] = AngleNormalizeArbitrary( angles[PITCH], _pitchSeam);
	if( _restrictPitch )
	{
		if(angles[PITCH] < _minimumPitch)
		{
			angles[PITCH] = _minimumPitch;
		}

		if(angles[PITCH] > _maximumPitch)
		{
			angles[PITCH] = _maximumPitch;
		}
	}

	/// Adjust the yaw and normalize the degrees based upon the location of our yaw seam.
	angles[YAW] += _yawDeltaDegrees;
	angles[YAW] = AngleNormalizeArbitrary( angles[YAW], _yawSeam);
	if( _restrictYaw )
	{

		/// Clamp yaw to the range [ _minimumRotate, _maximumRotate ]
		if( angles[ YAW ] > _maximumYaw )
		{
			angles[ YAW ] = _maximumYaw;
		}

		if( angles[ YAW ] < _minimumYaw )
		{
			angles[ YAW ] = _minimumYaw;
		}
	}

	//Set the player view angles based on the resulting vehicle angles
	player->SetViewAngles(angles);
}



//-----------------------------------------------------
//
// Name:		Drive
// Class:		StationaryVehicle
//
// Description:	Retrieves the user commands to determine the location of the vehicle.
//
// Parameters:	ucmd - the user command structure
//
// Returns:		qtrue - always
//-----------------------------------------------------
//virtual
qboolean StationaryVehicle::Drive(usercmd_t* ucmd)
{
	Vector i, j, k;

	if ( !driver || !driver->isClient() )
	{
		return false;
	}

	if ( !drivable )
	{
		driver->client->ps.pm_flags |= PMF_FROZEN;
		ucmd->forwardmove = 0.0f;
		ucmd->rightmove   = 0.0f;
		return false;
	}

	if(_noPrediction )
	{
		driver->client->ps.pm_flags |= PMF_NO_PREDICTION;
	}

	turnimpulse		=	angledist( SHORT2ANGLE( ucmd->angles[ YAW ] )   - driver->client->cmd_angles[ YAW ] );
	pitchimpulse	=	angledist( SHORT2ANGLE( ucmd->angles[ PITCH ] ) - driver->client->cmd_angles[ PITCH ] );

	_yawDeltaDegrees	=  SHORT2ANGLE(ucmd->deltaAngles[ YAW ] );
	_pitchDeltaDegrees	= SHORT2ANGLE(ucmd->deltaAngles[ PITCH ] );

	return qtrue;
}