SBSPSS/source/enemy/nmjfish.cpp

/*=========================================================================

	nnjfish.cpp

	Author:		CRB
	Created: 
	Project:	Spongebob
	Purpose: 

	Copyright (c) 2000 Climax Development Ltd

===========================================================================*/

#ifndef __ENEMY_NPC_H__
#include "enemy\npc.h"
#endif

#ifndef __GAME_GAME_H__
#include	"game\game.h"
#endif

#ifndef	__PLAYER_PLAYER_H__
#include	"player\player.h"
#endif

#define MJ_CYCLE_WIDTH			400
#define MJ_HALF_CYCLE_WIDTH		( MJ_CYCLE_WIDTH >> 1 )


void CNpcEnemy::processMotherJellyfishMovement( int _frames )
{
	s32 xDist, yDist;
	s32 xDistSqr, yDistSqr;

	switch( m_state )
	{
		case MOTHER_JELLYFISH_RETURN_TO_START_1:
		case MOTHER_JELLYFISH_RETURN_TO_START_2:
		case MOTHER_JELLYFISH_RETURN_TO_START_3:
		{
			xDist = m_base.vx - this->Pos.vx - MJ_HALF_CYCLE_WIDTH;
			xDistSqr = xDist * xDist;
			yDist = m_base.vy - this->Pos.vy;
			yDistSqr = yDist * yDist;

			if ( xDistSqr + yDistSqr > 100 )
			{
				processGenericGotoTarget( _frames, xDist, yDist, m_data[m_type].speed );
			}
			else
			{
				// have arrived at base position

				m_movementTimer = GameState::getOneSecondInFrames() * 10;
				m_state++;
				m_extension = -MJ_HALF_CYCLE_WIDTH;
				m_extendDir = EXTEND_RIGHT;
			}

			break;
		}

		case MOTHER_JELLYFISH_CYCLE_1:
		case MOTHER_JELLYFISH_CYCLE_2:
		case MOTHER_JELLYFISH_CYCLE_3:
		{
			m_movementTimer -= _frames;

			s32 xExtension;

			if ( m_extendDir == EXTEND_RIGHT )
			{
				if ( m_extension < MJ_HALF_CYCLE_WIDTH )
				{
					m_extension += 3 * _frames;

					xExtension = ( MJ_HALF_CYCLE_WIDTH * rsin( ( m_extension << 10 ) / MJ_HALF_CYCLE_WIDTH ) ) >> 12;

					Pos.vx = m_base.vx + xExtension;
					Pos.vy = m_base.vy - ( ( 50 * rsin( ( xExtension << 12 ) / MJ_CYCLE_WIDTH ) ) >> 12 );

					m_heading = 0;
				}
				else
				{
					m_extendDir = EXTEND_LEFT;

					if ( m_movementTimer < 0 )
					{
						m_controlFunc = NPC_CONTROL_CLOSE;
						m_state++;
					}
				}
			}
			else
			{
				if ( m_extension > -MJ_HALF_CYCLE_WIDTH )
				{
					m_extension -= 3 * _frames;

					xExtension = ( MJ_HALF_CYCLE_WIDTH * rsin( ( m_extension << 10 ) / MJ_HALF_CYCLE_WIDTH ) ) >> 12;

					Pos.vx = m_base.vx + xExtension;
					Pos.vy = m_base.vy + ( ( 50 * rsin( ( xExtension << 12 ) / MJ_CYCLE_WIDTH ) ) >> 12 );

					m_heading = 2048;
				}
				else
				{
					m_extendDir = EXTEND_RIGHT;

					if ( m_movementTimer < 0 )
					{
						m_controlFunc = NPC_CONTROL_CLOSE;
						m_state++;
					}
				}
			}

			break;
		}

		default:
			break;
	}
}

void CNpcEnemy::processCloseMotherJellyfishAttack( int _frames )
{
	switch( m_state )
	{
		case MOTHER_JELLYFISH_ATTACK_PLAYER_SHOCK:
		{
			// seek position above user

			CPlayer *player = GameScene.getPlayer();
			DVECTOR playerPos = player->getPos();
			DVECTOR seekPos;
			s32 xDist, yDist;
			s32 xDistSqr, yDistSqr;

			seekPos = playerPos;
			seekPos.vy -= 100;

			xDist = seekPos.vx - this->Pos.vx;
			xDistSqr = xDist * xDist;
			yDist = seekPos.vy - this->Pos.vy;
			yDistSqr = yDist * yDist;

			if ( xDistSqr + yDistSqr > 400 )
			{
				processGenericGotoTarget( _frames, xDist, yDist, m_data[m_type].speed );
			}
			else
			{
				// fire at user

				m_controlFunc = NPC_CONTROL_MOVEMENT;
				m_state = MOTHER_JELLYFISH_RETURN_TO_START_1;
			}

			break;
		}

		default:
		{
			s32 xExtension;

			if ( m_extendDir == EXTEND_RIGHT )
			{
				if ( m_extension < MJ_HALF_CYCLE_WIDTH )
				{
					m_extension += 3 * _frames;

					xExtension = ( MJ_HALF_CYCLE_WIDTH * rsin( ( m_extension << 10 ) / MJ_HALF_CYCLE_WIDTH ) ) >> 12;

					Pos.vx = m_base.vx + xExtension;
					Pos.vy = m_base.vy - ( ( 50 * rcos( ( xExtension << 11 ) / MJ_CYCLE_WIDTH ) ) >> 12 );

					m_heading = 0;
				}
				else
				{
					m_controlFunc = NPC_CONTROL_MOVEMENT;
					m_state++;
				}
			}
			else
			{
				if ( m_extension > -MJ_HALF_CYCLE_WIDTH )
				{
					m_extension -= 3 * _frames;

					xExtension = ( MJ_HALF_CYCLE_WIDTH * rsin( ( m_extension << 10 ) / MJ_HALF_CYCLE_WIDTH ) ) >> 12;

					Pos.vx = m_base.vx + xExtension;
					Pos.vy = m_base.vy + ( ( 50 * rcos( ( xExtension << 11 ) / MJ_CYCLE_WIDTH ) ) >> 12 );

					m_heading = 2048;
				}
				else
				{
					m_controlFunc = NPC_CONTROL_MOVEMENT;
					m_state++;
				}
			}

			break;
		}
	}
}