SBSPSS/source/platform/plantern.cpp

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/*=========================================================================
plantern.cpp
Author: CRB
Created:
Project: Spongebob
Purpose:
Copyright (c) 2001 Climax Development Ltd
===========================================================================*/
#ifndef __PLATFORM_PLANTERN_H__
#include "platform\plantern.h"
#endif
#ifndef __UTILS_HEADER__
#include "utils\utils.h"
#endif
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void CNpcLanternPlatform::postInit()
{
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CNpcPlatform::postInit();
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m_extension = 0;
m_heading = 1024;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void CNpcLanternPlatform::setWaypoints( sThingPlatform *ThisPlatform )
{
int pointNum;
u16 *PntList=(u16*)MakePtr(ThisPlatform,sizeof(sThingPlatform));
u16 newXPos, newYPos;
newXPos = (u16) *PntList;
PntList++;
newYPos = (u16) *PntList;
PntList++;
DVECTOR startPos;
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startPos.vx = ( newXPos << 4 ) + 8;
startPos.vy = ( newYPos << 4 ) + 16;
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if ( ThisPlatform->PointCount > 1 )
{
newXPos = (u16) *PntList;
PntList++;
newYPos = (u16) *PntList;
PntList++;
DVECTOR pivotPos;
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pivotPos.vx = ( newXPos << 4 ) + 8;
pivotPos.vy = ( newYPos << 4 ) + 16;
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s32 xDist = startPos.vx - pivotPos.vx;
s32 yDist = startPos.vy - pivotPos.vy;
m_maxExtension = 1024 - ratan2( abs( yDist ), abs( xDist ) );
m_length = isqrt2( ( xDist * xDist ) + ( yDist * yDist ) );
init( pivotPos );
if ( xDist > 0 )
{
m_extendDir = EXTEND_LEFT;
}
else
{
m_extendDir = EXTEND_RIGHT;
}
}
else
{
init( startPos );
}
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m_thinkArea.x1 = Pos.vx - m_length;
m_thinkArea.x2 = Pos.vx + m_length;
m_thinkArea.y1 = Pos.vy - m_length;
m_thinkArea.y2 = Pos.vy + m_length;
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}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void CNpcLanternPlatform::processMovement( int _frames )
{
if ( m_extendDir == EXTEND_LEFT )
{
if ( m_extension > m_maxExtension )
{
m_extendDir = EXTEND_RIGHT;
}
else
{
m_extension += _frames << 3;
}
}
else
{
if ( m_extension < -m_maxExtension )
{
m_extendDir = EXTEND_LEFT;
}
else
{
m_extension -= _frames << 3;
}
}
Pos.vx = m_base.vx + ( ( m_length * rcos( m_heading + m_extension ) ) >> 12 );
Pos.vy = m_base.vy + ( ( m_length * rsin( m_heading + m_extension ) ) >> 12 );
}