441 lines
10 KiB
C++
441 lines
10 KiB
C++
/*=========================================================================
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nworm.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 __ENEMY_NPC_H__
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#include "enemy\npc.h"
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#endif
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#ifndef __ENEMY_NWORM_H__
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#include "enemy\nworm.h"
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#endif
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#ifndef __GAME_GAME_H__
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#include "game\game.h"
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#endif
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#ifndef __PLAYER_PLAYER_H__
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#include "player\player.h"
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#endif
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#ifndef __VID_HEADER_
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#include "system\vid.h"
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#endif
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcParasiticWormEnemy::postInit()
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{
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m_npcPath.setPathType( CNpcPath::REPEATING_PATH );
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// create start of list
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CNpcPositionHistory *newPosition;
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newPosition = new ("position history") CNpcPositionHistory;
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newPosition->pos = Pos;
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m_positionHistory = newPosition;
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CNpcPositionHistory *currentPosition = m_positionHistory;
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// create rest of list
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for ( int histLength = 1 ; histLength < ( NPC_PARASITIC_WORM_LENGTH * NPC_PARASITIC_WORM_SPACING ) ; histLength++ )
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{
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newPosition = new ("position history") CNpcPositionHistory;
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newPosition->pos = Pos;
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newPosition->next = NULL;
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newPosition->prev = currentPosition;
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currentPosition->next = newPosition;
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currentPosition = newPosition;
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}
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// link ends together for circular list
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currentPosition->next = m_positionHistory;
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m_positionHistory->prev = currentPosition;
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u16 segScale;
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int initLength = NPC_PARASITIC_WORM_LENGTH / 3;
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int remLength = NPC_PARASITIC_WORM_LENGTH - initLength;
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for ( int segCount = 0 ; segCount < NPC_PARASITIC_WORM_LENGTH ; segCount++ )
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{
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CNpcEnemy *segment;
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CNpcParasiticWormSegment *wormSegment;
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wormSegment = new ("segment") CNpcParasiticWormSegment;
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wormSegment->setType( CNpcEnemy::NPC_PARASITIC_WORM_SEGMENT );
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wormSegment->init();
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wormSegment->setLayerCollision( m_layerCollision );
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wormSegment->postInit();
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if ( segCount < initLength )
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{
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u16 sum = ONE;
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u16 start = ONE >> 1;
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u16 end = sum - start;
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segScale = start + ( ( end * segCount ) / initLength );
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}
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else
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{
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u16 sum = ONE;
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u16 start = ONE >> 3;
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u16 end = sum - start;
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segScale = start + ( ( end * ( NPC_PARASITIC_WORM_LENGTH - segCount ) ) / remLength );
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}
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wormSegment->setScale( segScale );
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segment = wormSegment;
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this->addChild( segment );
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}
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m_movementTimer = 2 * GameState::getOneSecondInFrames();
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcParasiticWormEnemy::shutdown()
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{
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deleteAllChild();
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CNpcEnemy::shutdown();
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcParasiticWormSegment::think( int _frames )
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{
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcParasiticWormSegment::postInit()
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{
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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bool CNpcParasiticWormEnemy::processSensor()
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{
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/*if ( playerXDistSqr + playerYDistSqr < 40000 )
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{
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m_controlFunc = NPC_CONTROL_CLOSE;
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return( true );
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}
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else
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{
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return( false );
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}*/
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return( false );
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcParasiticWormEnemy::processMovement( int _frames )
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{
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s32 moveX = 0, moveY = 0;
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s32 moveVel = 0;
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s32 moveDist = 0;
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DVECTOR oldPos = Pos;
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u8 skipCounter;
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processGenericFixedPathMove( _frames, &moveX, &moveY, &moveVel, &moveDist );
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Pos.vx += moveX;
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Pos.vy += moveY;
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m_extension += 256;
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m_extension &= 4095;
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m_positionHistory = m_positionHistory->prev;
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m_positionHistory->pos = oldPos;
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CNpcPositionHistory *newPos;
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newPos = m_positionHistory;
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for ( skipCounter = 1 ; skipCounter < NPC_PARASITIC_WORM_SPACING ; skipCounter++ )
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{
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newPos = newPos->next;
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}
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CThing *List=Next;
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oldPos = Pos;
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s32 extension = m_extension;
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u8 downShift = 2;
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u8 timeShift;
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if ( m_movementTimer > 0 )
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{
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m_movementTimer -= _frames;
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if ( m_movementTimer < 0 )
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{
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m_movementTimer = 0;
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}
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}
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timeShift = m_movementTimer / GameState::getOneSecondInFrames();
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while( List )
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{
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CNpcEnemy *segment = (CNpcEnemy *) List;
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s32 xDist = oldPos.vx - newPos->pos.vx;
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s32 yDist = oldPos.vy - newPos->pos.vy;
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s16 headingToTarget = ratan2( yDist, xDist );
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//segment->setHeading( headingToTarget );
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DVECTOR sinPos;
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sinPos = newPos->pos;
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s32 diff = ( ( ( 5 >> downShift ) * rsin( extension ) ) >> 12 ) >> timeShift;
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sinPos.vx += ( diff * rcos( headingToTarget + 1024 ) ) >> 12;
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sinPos.vy += ( diff * rsin( headingToTarget + 1024 ) ) >> 12;
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List->setPos( sinPos );
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oldPos = sinPos;
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List = List->getNext();
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if ( List )
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{
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for ( skipCounter = 0 ; skipCounter < NPC_PARASITIC_WORM_SPACING ; skipCounter++ )
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{
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newPos = newPos->next;
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}
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}
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extension += 1024;
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extension &= 4095;
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if ( downShift > 0 )
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{
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downShift--;
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}
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}
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List=Next;
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oldPos = Pos;
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while( List )
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{
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CNpcEnemy *segment = (CNpcEnemy *) List;
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DVECTOR currentPos = segment->getPos();
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s32 xDist = oldPos.vx - currentPos.vx;
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s32 yDist = oldPos.vy - currentPos.vy;
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s16 headingToPrev = ratan2( yDist, xDist );
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s16 headingFromNext;
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s16 heading = headingToPrev;
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oldPos = currentPos;
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List = List->getNext();
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if ( List )
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{
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DVECTOR nextPos = List->getPos();
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xDist = currentPos.vx - nextPos.vx;
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yDist = currentPos.vy - nextPos.vy;
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headingFromNext = ratan2( yDist, xDist );
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s16 decDir, incDir, moveDist;
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decDir = headingFromNext - headingToPrev;
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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 = headingToPrev - headingFromNext;
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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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heading -= moveDist >> 1;
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}
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segment->setHeading( heading );
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcParasiticWormEnemy::resetParasiticWormHeadToTail()
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{
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DVECTOR startPos;
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DVECTOR endPos;
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int posCounter;
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CNpcPositionHistory *currentPos;
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startPos = Pos;
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currentPos = m_positionHistory;
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for ( posCounter = 0 ; posCounter < ( NPC_PARASITIC_WORM_LENGTH * NPC_PARASITIC_WORM_SPACING ) - 1 ; posCounter++ )
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{
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currentPos = currentPos->next;
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}
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endPos = currentPos->pos;
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currentPos = m_positionHistory;
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for ( posCounter = 0 ; posCounter < NPC_PARASITIC_WORM_LENGTH * NPC_PARASITIC_WORM_SPACING ; posCounter++ )
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{
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currentPos->pos.vx = startPos.vx + ( posCounter * ( endPos.vx - startPos.vx ) ) / ( ( NPC_PARASITIC_WORM_LENGTH * NPC_PARASITIC_WORM_SPACING ) - 1 );
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currentPos->pos.vy = startPos.vy + ( posCounter * ( endPos.vy - startPos.vy ) ) / ( ( NPC_PARASITIC_WORM_LENGTH * NPC_PARASITIC_WORM_SPACING ) - 1 );
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currentPos = currentPos->next;
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}
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CNpcPositionHistory *newPos;
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newPos = m_positionHistory;
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u8 skipCounter;
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for ( skipCounter = 1 ; skipCounter < NPC_PARASITIC_WORM_SPACING ; skipCounter++ )
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{
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newPos = newPos->next;
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}
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CThing *List=Next;
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DVECTOR oldPos = Pos;
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s32 extension = m_extension;
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while( List )
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{
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CNpcEnemy *segment = (CNpcEnemy *) List;
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s32 xDist = oldPos.vx - newPos->pos.vx;
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s32 yDist = oldPos.vy - newPos->pos.vy;
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s16 headingToTarget = ratan2( yDist, xDist );
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segment->setHeading( headingToTarget );
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List->setPos( newPos->pos );
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oldPos = newPos->pos;
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List = List->getNext();
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if ( List )
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{
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for ( skipCounter = 0 ; skipCounter < NPC_PARASITIC_WORM_SPACING ; skipCounter++ )
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{
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newPos = newPos->next;
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}
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}
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extension += 1024;
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extension &= 4095;
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcParasiticWormEnemy::processClose( int _frames )
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{
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resetParasiticWormHeadToTail();
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m_movementTimer = 2 * GameState::getOneSecondInFrames();
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m_controlFunc = NPC_CONTROL_MOVEMENT;
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m_timerFunc = NPC_TIMER_ATTACK_DONE;
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m_timerTimer = GameState::getOneSecondInFrames();
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m_sensorFunc = NPC_SENSOR_NONE;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcParasiticWormEnemy::processEnemyCollision( CThing *thisThing )
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{
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// do nothing
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcParasiticWormSegment::processEnemyCollision( CThing *thisThing )
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{
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// do nothing
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcParasiticWormEnemy::render()
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{
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SprFrame = NULL;
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if ( m_isActive )
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{
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CEnemyThing::render();
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if (canRender())
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{
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DVECTOR &renderPos=getRenderPos();
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SprFrame = m_actorGfx->Render(renderPos,m_animNo,( m_frame >> 8 ),m_reversed);
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m_actorGfx->RotateScale( SprFrame, renderPos, m_heading, 4096, 4096 );
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sBBox boundingBox = m_actorGfx->GetBBox();
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setCollisionSize( ( boundingBox.XMax - boundingBox.XMin ), ( boundingBox.YMax - boundingBox.YMin ) );
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setCollisionCentreOffset( ( boundingBox.XMax + boundingBox.XMin ) >> 1, ( boundingBox.YMax + boundingBox.YMin ) >> 1 );
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void CNpcParasiticWormSegment::render()
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{
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SprFrame = NULL;
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if ( m_isActive )
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{
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CEnemyThing::render();
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if (canRender())
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{
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DVECTOR &renderPos=getRenderPos();
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SprFrame = m_actorGfx->Render(renderPos,m_animNo,( m_frame >> 8 ),m_reversed);
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m_actorGfx->RotateScale( SprFrame, renderPos, m_heading, 4096, m_scale );
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sBBox boundingBox = m_actorGfx->GetBBox();
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setCollisionSize( ( boundingBox.XMax - boundingBox.XMin ), ( boundingBox.YMax - boundingBox.YMin ) );
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setCollisionCentreOffset( ( boundingBox.XMax + boundingBox.XMin ) >> 1, ( boundingBox.YMax + boundingBox.YMin ) >> 1 );
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}
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}
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}
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