139 lines
2.3 KiB
C++
139 lines
2.3 KiB
C++
/*=========================================================================
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plinear.cpp
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Author: CRB
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Created:
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Project: Spongebob
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Purpose:
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Copyright (c) 2001 Climax Development Ltd
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===========================================================================*/
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#ifndef __PLATFORM_PLINEAR_H__
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#include "platform\plinear.h"
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#endif
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcLinearPlatform::postInit()
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{
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CNpcPlatform::postInit();
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m_npcPath.setPathType( CNpcPath::PONG_PATH );
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcLinearPlatform::processMovement( int _frames )
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{
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s32 moveX = 0, moveY = 0;
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s32 moveDist = 0;
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s32 xDist, yDist;
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bool pathComplete;
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bool waypointChange;
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s16 headingToTarget = m_npcPath.think( Pos, &pathComplete, &waypointChange, &xDist, &yDist );
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if ( !pathComplete )
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{
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s16 decDir, incDir;
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s16 maxTurnRate = m_data[m_type].turnSpeed;
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decDir = m_heading - headingToTarget;
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if ( decDir < 0 )
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{
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decDir += ONE;
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}
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incDir = headingToTarget - m_heading;
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if ( incDir < 0 )
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{
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incDir += ONE;
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}
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if ( decDir < incDir )
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{
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moveDist = -decDir;
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}
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else
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{
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moveDist = incDir;
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}
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if ( moveDist < -maxTurnRate )
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{
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moveDist = -maxTurnRate;
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}
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else if ( moveDist > maxTurnRate )
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{
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moveDist = maxTurnRate;
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}
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m_heading += moveDist;
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m_heading &= 4095;
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s32 preShiftX = _frames * m_speed * rcos( m_heading );
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s32 preShiftY = _frames * m_speed * rsin( m_heading );
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moveX = preShiftX >> 12;
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if ( !moveX && preShiftX )
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{
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moveX = preShiftX / abs( preShiftX );
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}
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if ( xDist > 0 )
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{
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if ( moveX > xDist )
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{
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moveX = xDist;
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}
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}
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else if ( xDist < 0 )
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{
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if ( moveX < xDist )
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{
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moveX = xDist;
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}
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}
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else
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{
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moveX = 0;
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}
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moveY = preShiftY >> 12;
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if ( !moveY && preShiftY )
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{
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moveY = preShiftY / abs( preShiftY );
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}
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if ( yDist > 0 )
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{
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if ( moveY > yDist )
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{
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moveY = yDist;
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}
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}
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else if ( yDist < 0 )
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{
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if ( moveY < yDist )
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{
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moveY = yDist;
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}
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}
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else
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{
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moveY = 0;
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}
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//processGroundCollisionReverse( moveX, moveY );
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}
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Pos.vx += moveX;
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Pos.vy += moveY;
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}
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