SBSPSS/source/platform/psbarrel.cpp

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

	psbarrel.h

	Author:		CRB
	Created: 
	Project:	Spongebob
	Purpose: 

	Copyright (c) 2001 Climax Development Ltd

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

#ifndef __PLATFORM_PSBARREL_H__
#include "platform\psbarrel.h"
#endif

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

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

#ifndef	__UTILS_HEADER__
#include	"utils\utils.h"
#endif


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

void CNpcSteerableBarrelPlatform::postInit()
{
	CNpcPlatform::postInit();

	sBBox boundingBox = m_modelGfx->GetBBox();
	setCollisionSize( ( boundingBox.XMax - boundingBox.XMin ), PLATFORMCOLLISIONHEIGHT + ( boundingBox.YMax - boundingBox.YMin ) );
	setCollisionCentreOffset( ( boundingBox.XMax + boundingBox.XMin ) >> 1, ( ( boundingBox.YMax + boundingBox.YMin ) >> 1 ) - 32 );
}

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

void CNpcSteerableBarrelPlatform::processMovement( int _frames )
{
	s32 maxHeight = 20;
	s32 fallSpeed = 3;
	s8 yMovement = fallSpeed * _frames;
	s32 groundHeight;

	s32 moveX = 0;
	s32 moveY = 0;

	if ( m_contact )
	{
		CPlayer *player = GameScene.getPlayer();

		DVECTOR playerPos = player->getPos();

		s32 playerX = playerPos.vx - this->Pos.vx;

		if ( playerX > 5 )
		{
			// roll barrel right

			moveX = m_speed * _frames;
		}
		else if ( playerX < -5 )
		{
			moveX = -m_speed * _frames;
		}

		// check for collision

		if ( m_layerCollision->getHeightFromGround( Pos.vx + moveX, Pos.vy ) < -maxHeight )
		{
			moveX = 0;
		}

		if ( moveX > 0 )
		{
			m_rotation += 30 * _frames;
			m_rotation &= 4095;
		}
		else if ( moveX < 0 )
		{
			m_rotation -= 30 * _frames;
			m_rotation &= 4095;
		}
	}

	// check for vertical movement

	groundHeight = m_layerCollision->getHeightFromGround( Pos.vx + moveX, Pos.vy, yMovement + 16 );

	if ( groundHeight <= yMovement )
	{
		// groundHeight <= yMovement indicates either just above ground or on or below ground

		moveY = groundHeight;
	}
	else
	{
		// fall

		moveY = yMovement;
	}

	Pos.vx += moveX;
	Pos.vy += moveY;
}

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

void CNpcSteerableBarrelPlatform::render()
{
	if ( m_isActive )
	{
		CPlatformThing::render();

		if (canRender())
		{
			DVECTOR &renderPos=getRenderPos();
			DVECTOR	offset = CLevel::getCameraPos();

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

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

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

#if defined (__USER_paul__) || defined (__USER_charles__)
	DVECTOR size;
	DVECTOR	centre;
	int		halfLength;
	int		x1,y1,x2,y2;

	centre=getCollisionCentre();
	size=getCollisionSize();
	halfLength=size.vx>>1;

	x1=-halfLength*mcos(getCollisionAngle()&4095)>>12;
	y1=-halfLength*msin(getCollisionAngle()&4095)>>12;
	x2=+halfLength*mcos(getCollisionAngle()&4095)>>12;
	y2=+halfLength*msin(getCollisionAngle()&4095)>>12;

	centre.vx-=offset.vx;
	centre.vy-=offset.vy;
	x1+=centre.vx;
	y1+=centre.vy;
	x2+=centre.vx;
	y2+=centre.vy;

	DrawLine(x1,y1,x2,y2,0,255,0,0);
#endif
		}
	}
}