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

	hbbarrel.h

	Author:		CRB
	Created: 
	Project:	Spongebob
	Purpose: 

	Copyright (c) 2001 Climax Development Ltd

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

#ifndef __HAZARD_HBBARREL_H__
#include "hazard\hbbarrel.h"
#endif

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

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

#ifndef __LAYER_COLLISION_H__
#include "level\layercollision.h"
#endif

#ifndef __VID_HEADER_
#include "system\vid.h"
#endif

#ifndef __LEVEL_LEVEL_H__
#include "level\level.h"
#endif


////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void CNpcBouncingBarrelHazard::init()
{
	CNpcHazard::init();

	m_lastWaypoint = Pos;

	m_rotation = 0;
	m_rockRotation = 0;
	m_rockDir = true;
	m_hitPlayer = false;
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void CNpcBouncingBarrelHazard::processMovement( int _frames )
{
	s32 moveX = 0, moveY = 0;
	s32 moveVel = 0;
	s32 moveDist = 0;
	s32 waypointXDist;
	s32 waypointYDist;
	s32 waypointHeading;
	s32 groundHeight;

	// deal with horizontal

	if ( m_hitPlayer )
	{
		Pos.vy += m_speed * _frames;

		if ( m_speed < 3 )
		{
			m_speed++;
		}

		m_rotation += 64 * _frames;
		m_rotation &= 4095;

		DVECTOR	offset = CLevel::getCameraPos();

		s32 yPos = Pos.vy - offset.vy;

		if ( yPos > VidGetScrH() )
		{
			Pos = m_base;
			m_hitPlayer = false;
			m_npcPath.resetPath();
		}
	}
	else
	{
		bool pathComplete;
		
		if ( m_npcPath.thinkFlat( Pos, &pathComplete, &waypointXDist, &waypointYDist, &waypointHeading, 1 ) )
		{
			if ( pathComplete )
			{
				Pos = m_base;
				m_hitPlayer = false;
				m_npcPath.resetPath();
			}

			m_lastWaypoint = Pos;
		}

		moveX = 3 * _frames;

		if ( moveX > abs( waypointXDist ) )
		{
			moveX = abs( waypointXDist );
		}

		if ( waypointHeading == 2048 )
		{
			moveX = -moveX;
			m_rotation -= 256 * _frames;
			m_rotation &= 4095;
		}
		else
		{
			m_rotation += 256 * _frames;
			m_rotation &= 4095;
		}

		if ( m_rockDir )
		{
			m_rockRotation += 30 * _frames;

			if ( m_rockRotation > 256 )
			{
				m_rockDir = false;
			}
		}
		else
		{
			m_rockRotation -= 30 * _frames;

			if ( m_rockRotation < -256 )
			{
				m_rockDir = true;
			}
		}

		Pos.vx += moveX;

		// deal with vertical

		DVECTOR nextWaypoint;
		
		nextWaypoint.vx = waypointXDist + Pos.vx;
		nextWaypoint.vy = waypointYDist + Pos.vy;

		s32 waypointDist = abs( nextWaypoint.vx - m_lastWaypoint.vx );

		if ( waypointDist < 1 )
		{
			waypointDist = 1;
		}

		if ( waypointYDist > 0 )
		{
			s32 sineVal = ( abs( Pos.vx - nextWaypoint.vx ) * 1024 ) / waypointDist;

			Pos.vy = nextWaypoint.vy - ( ( abs( nextWaypoint.vy - m_lastWaypoint.vy ) * rsin( sineVal ) ) >> 12 );
		}
		else if ( waypointYDist < 0 )
		{
			s32 sineVal = ( abs( Pos.vx - m_lastWaypoint.vx ) * 1024 ) / waypointDist;

			Pos.vy = m_lastWaypoint.vy - ( ( abs( nextWaypoint.vy - m_lastWaypoint.vy ) * rsin( sineVal ) ) >> 12 );
		}
	}
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void CNpcBouncingBarrelHazard::render()
{
	CHazardThing::render();

	if (canRender())
	{
		DVECTOR &renderPos=getRenderPos();

		SVECTOR rotation;
		rotation.vx = m_rockRotation;
		rotation.vy = 0;
		rotation.vz = m_rotation;

		VECTOR scale;
		scale.vx = ONE;
		scale.vy = ONE;
		scale.vz = ONE;

		m_modelGfx->Render(renderPos,&rotation,&scale);
	}
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

const CRECT *CNpcBouncingBarrelHazard::getThinkBBox()
{
	CRECT objThinkBox = getCollisionArea();

	sBBox &thinkBBox = CThingManager::getThinkBBox();
	objThinkBox.x1 = thinkBBox.XMin;
	objThinkBox.x2 = thinkBBox.XMax;
	objThinkBox.y1 = thinkBBox.YMin;
	objThinkBox.y2 = thinkBBox.YMax;

	return &objThinkBox;
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void CNpcBouncingBarrelHazard::collidedWith( CThing *_thisThing )
{
	if ( m_isActive )
	{
		switch(_thisThing->getThingType())
		{
			case TYPE_PLAYER:
			{
				if ( !m_hitPlayer )
				{
					CPlayer *player = (CPlayer *) _thisThing;

					if ( !player->isRecoveringFromHit() )
					{
						player->takeDamage( DAMAGE__HIT_ENEMY );
					}

					m_hitPlayer = true;
					m_speed = -5;
				}

				break;
			}

			default:
				ASSERT(0);
				break;
		}
	}
}