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hsjumpdrive.cpp
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hsjumpdrive.cpp
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// -----------------------------------------------------------------------
//! $Id: hsjumpdrive.cpp,v 1.4 2006/12/16 01:25:01 mark Exp $
// -----------------------------------------------------------------------
#include "pch.h"
#ifndef WIN32
#include <strings.h>
#endif
#include <cstdio>
#include <stdlib.h>
#include "hstypes.h"
#include "hsobjects.h"
#include "hsship.h"
#include "hspace.h"
#include "hsansi.h"
#include "hsconf.h"
#include "hsinterface.h"
#include "hsjumpdrive.h"
//
// CHSJumpDrive stuff
//
CHSJumpDrive::CHSJumpDrive()
{
SetType(HSS_JUMP_DRIVE);
m_fChargeLevel = 0;
m_bEngaged = false;
m_puiMinJumpSpeed = NULL;
m_puiEfficiency = NULL;
m_uiSublightSpeed = 0;
m_fuel_source = NULL;
m_iJumpSpeedMultiplier = HSCONF.jump_speed_multiplier;
}
HS_BOOL8 CHSJumpDrive::SetAttributeValue(const HS_INT8 * pcAttrName,
const HS_INT8 * strValue)
{
if (!strcasecmp(pcAttrName, "CHARGE"))
{
m_fChargeLevel = (float) atof(strValue);
return true;
}
else if (!strcasecmp(pcAttrName, "ENGAGED"))
{
m_bEngaged = atoi(strValue) == 0 ? false : true;
return true;
}
else if (!strcasecmp(pcAttrName, "JUMPSPEED MULTIPLIER"))
{
m_iJumpSpeedMultiplier = atoi(strValue);
return true;
}
else if (!strcasecmp(pcAttrName, "MIN SPEED"))
{
if (!m_puiMinJumpSpeed)
{
m_puiMinJumpSpeed = new HS_UINT32;
}
*m_puiMinJumpSpeed = atoi(strValue);
return true;
}
else if (!strcasecmp(pcAttrName, "EFFICIENCY"))
{
if (!m_puiEfficiency)
{
m_puiEfficiency = new HS_UINT32;
}
*m_puiEfficiency = atoi(strValue);
return true;
}
return CHSEngSystem::SetAttributeValue(pcAttrName, strValue);
}
void CHSJumpDrive::GetAttributeList(CHSAttributeList & rlistAttrs)
{
// Call the base class first.
CHSEngSystem::GetAttributeList(rlistAttrs);
// Push our own attributes.
rlistAttrs.push_back("ENGAGED");
rlistAttrs.push_back("EFFICIENCY");
rlistAttrs.push_back("MIN SPEED");
rlistAttrs.push_back("CHARGE");
rlistAttrs.push_back("JUMPSPEED MULTIPLIER");
}
HS_BOOL8 CHSJumpDrive::GetAttributeValue(const HS_INT8 * pcAttrName,
CHSVariant & rvarValue,
HS_BOOL8 bAdjusted,
HS_BOOL8 bLocalOnly)
{
// Determine attribute, and return the value.
if (!strcasecmp(pcAttrName, "ENGAGED"))
{
rvarValue = m_bEngaged;
return true;
}
else if (!strcasecmp(pcAttrName, "JUMPSPEED MULTIPLIER"))
{
rvarValue = m_iJumpSpeedMultiplier;
return true;
}
else if (!strcasecmp(pcAttrName, "EFFICIENCY"))
{
if (m_puiEfficiency)
{
rvarValue = *m_puiEfficiency;
}
else if (!bLocalOnly)
{
rvarValue = GetEfficiency();
}
else
{
return false;
}
return true;
}
else if (!strcasecmp(pcAttrName, "MIN SPEED"))
{
if (m_puiMinJumpSpeed)
{
rvarValue = *m_puiMinJumpSpeed;
}
else if (!bLocalOnly)
{
rvarValue = GetMinJumpSpeed();
}
else
{
return false;
}
return true;
}
else if (!strcasecmp(pcAttrName, "CHARGE"))
{
rvarValue = m_fChargeLevel;
return true;
}
else
{
return CHSEngSystem::GetAttributeValue(pcAttrName, rvarValue,
bAdjusted, bLocalOnly);
}
}
void CHSJumpDrive::SaveToFile(FILE * fp)
{
// Save the base first
CHSEngSystem::SaveToFile(fp);
// Save our stuff
fprintf(fp, "CHARGE=%.2f\n", m_fChargeLevel);
fprintf(fp, "ENGAGED=%d\n", m_bEngaged);
if (m_puiMinJumpSpeed)
{
fprintf(fp, "MIN SPEED=%d\n", *m_puiMinJumpSpeed);
}
if (m_puiEfficiency)
{
fprintf(fp, "EFFICIENCY=%d\n", *m_puiEfficiency);
}
fprintf(fp, "JUMPSPEED MULTIPLIER=%d\n", m_iJumpSpeedMultiplier);
}
// Returns the charge rate for the jump drives. If bAdjusted
// is set to true, damage and power level adjustements are
// made to the value before returning it.
float CHSJumpDrive::GetChargeRate(HS_BOOL8 bAdjusted)
{
float rate;
// Base rate of 1/2 percent per second
rate = 0.5;
// Adjust?
if (bAdjusted)
{
// Damage adjustment
rate *= 1 - ((float) .25 * GetDamageLevel());
// Power adjustment. Add .00001 just in case
// optimal power is 0.
float fPower;
fPower = (float) (GetOptimalPower(false) + .00001);
fPower = GetCurrentPower() / fPower;
rate *= fPower;
}
return rate;
}
void CHSJumpDrive::DoCycle()
{
float rate;
// Do base stuff first
CHSEngSystem::DoCycle();
// Charge jumpers?
if ((GetCurrentPower() > 0) && (m_fChargeLevel < 100))
{
rate = GetChargeRate(true);
if (rate > 0)
{
m_fChargeLevel += rate;
// Make sure we don't overcharge
if (m_fChargeLevel > 100)
{
m_fChargeLevel = 100;
}
if (m_fChargeLevel == 100)
{
if (GetOwnerObject()
&& GetOwnerObject()->GetType() == HST_SHIP)
{
CHSShip *cShip;
cShip = (CHSShip *) GetOwnerObject();
if (cShip)
{
cShip->NotifyConsoles(hsInterface.
HSPrintf
("%s%s-%s Jump Drive charged.",
ANSI_HILITE, ANSI_GREEN,
ANSI_NORMAL), MSG_ENGINEERING);
}
}
}
}
}
// If engaged, consume fuel.
if (m_bEngaged)
{
ConsumeFuelBySpeed(m_uiSublightSpeed * m_iJumpSpeedMultiplier);
}
}
HS_INT8 *CHSJumpDrive::GetStatus()
{
static HS_INT8 tbuf[32];
if (m_fChargeLevel == 100)
{
return "Charged";
}
else if (GetCurrentPower() <= 0)
{
return "Offline";
}
else
{
sprintf(tbuf, "%.0f/100%%", m_fChargeLevel);
return tbuf;
}
}
void CHSJumpDrive::CutPower(HS_INT32 level)
{
if (level == 0)
{
if (GetOwnerObject() && (GetOwnerObject()->GetType() == HST_SHIP))
{
CHSShip *cShip;
cShip = (CHSShip *) GetOwnerObject();
if (hsInterface.AtrGet(cShip->GetDbref(), "HSMSG_JUMPERS_CUT"))
{
char *msg = hsInterface.EvalExpression(hsInterface.m_buffer,
cShip->GetDbref(),
cShip->GetDbref(),
cShip->GetDbref());
cShip->NotifySrooms(msg);
}
else
{
cShip->NotifySrooms(HSCONF.jumpers_cut);
}
}
// Set charge level to 0.
m_fChargeLevel = 0;
// If jumpers are engaged and power is set to 0, then
// disengage.
if (GetEngaged())
{
HS_INT8 tbuf[128];
m_bEngaged = false;
sprintf(tbuf, "%s%s-%s Jump drive disengaged.",
ANSI_HILITE, ANSI_GREEN, ANSI_NORMAL);
if (GetOwnerObject())
{
GetOwnerObject()->HandleMessage(tbuf, MSG_ENGINEERING);
}
}
}
}
// Indicates whether jump drive is engaged or not.
HS_BOOL8 CHSJumpDrive::GetEngaged()
{
return m_bEngaged;
}
// Attempts to set the engaged status
HS_BOOL8 CHSJumpDrive::SetEngaged(HS_BOOL8 bStat)
{
if (bStat)
{
// Already engaged?
if (GetEngaged())
return false;
// Not enough power?
if (m_fChargeLevel < 100)
return false;
// Engage em.
m_bEngaged = true;
// Drain power
m_fChargeLevel = 0;
return true;
}
else
{
// Not engaged?
if (!GetEngaged())
return false;
// Disengage
m_bEngaged = false;
return true;
}
}
// Returns the current charge percentage from 0 - 100.
HS_INT32 CHSJumpDrive::GetChargePerc()
{
return (HS_INT32) (m_fChargeLevel);
}
// Returns the minimum jump speed for the drive.
HS_INT32 CHSJumpDrive::GetMinJumpSpeed()
{
// Do we have a local value?
if (!m_puiMinJumpSpeed)
{
// Do we have a parent?
if (!GetParent())
{
return 0;
}
else
{
CHSJumpDrive *ptr;
ptr = (CHSJumpDrive *) GetParent();
return ptr->GetMinJumpSpeed();
}
}
return *m_puiMinJumpSpeed;
}
// Tells the engines that they need to gobble up some fuel
// from the fuel source. The engines know their efficiency
// and such, so they just drain the fuel from the fuel system.
// Speed here should be given in units per hour.
void CHSJumpDrive::ConsumeFuelBySpeed(HS_INT32 speed)
{
float fConsume;
float fRealized;
// Do we have a fuel system?
if (!GetFuelSource() || (GetFuelSource()->GetFuelRemaining() <= 0))
{
return;
}
// Do not consume fuel if efficiency is 0
if (0 == GetEfficiency())
{
return;
}
// Calculate per second travel rate
fConsume = (float) (speed * .0002778);
// Divide by efficiency
fConsume = (float) (fConsume / (1000.0 * GetEfficiency()));
fRealized = GetFuelSource()->ExtractFuelUnit(fConsume);
if (fRealized < fConsume)
{
// Out of gas. Disengage.
m_bEngaged = false;
HS_INT8 tbuf[128];
sprintf(tbuf,
"%s%s-%s A warning light flashing, indicating jump drives have \
run out of fuel.",
ANSI_HILITE, ANSI_YELLOW, ANSI_NORMAL);
if (GetOwnerObject())
{
GetOwnerObject()->HandleMessage(tbuf, MSG_ENGINEERING, NULL);
}
}
}
// Returns the efficiency of the jump drive, which is a
// number specifying thousands of units of distance travel
// per unit of fuel consumption .. just like gas mileage on
// a car. For example 1000km/gallon. This would be returned
// here as just 1.
HS_INT32 CHSJumpDrive::GetEfficiency()
{
// Do we have a local value?
if (!m_puiEfficiency)
{
// Do we have a parent?
if (GetParent())
{
CHSJumpDrive *ptr;
ptr = (CHSJumpDrive *) GetParent();
return ptr->GetEfficiency();
}
else
{
return 1; // default of 1000 (1k)
}
}
return *m_puiEfficiency;
}
// Sets the fuel system source for the engines. If this
// is NULL, engines don't consume fuel .. duh.
void CHSJumpDrive::SetFuelSource(CHSFuelSystem * cFuel)
{
m_fuel_source = cFuel;
}
// Gets the fuel system for the engines. Replaces the m_fuel_source variable.
CHSFuelSystem* CHSJumpDrive::GetFuelSource(void)
{
CHSShip *cShip = (CHSShip *) GetOwnerObject();
if (!cShip)
{
return NULL;
}
return (CHSFuelSystem *)cShip->GetSystems().GetSystem(HSS_FUEL_SYSTEM);
}
// Tells the jump drive the current sublight speed so that
// it can calculate fuel consumption and hyperspace speed.
void CHSJumpDrive::SetSublightSpeed(HS_INT32 iSpeed)
{
// Speed must be positive
m_uiSublightSpeed = abs(iSpeed);
}