mechcommander2/Code/vfxshape.cpp

//---------------------------------------------------------------------------
//
// vfxshape.cpp - This file contains the header for the new shape engine
//
//---------------------------------------------------------------------------//
// Copyright (C) Microsoft Corporation. All rights reserved.                 //
//===========================================================================//

//---------------------------------------------------------------------------
// Include files

#ifndef MCLIB_H
#include "mclib.h"
#endif

#ifndef VFXSHAPE_H
#include "vfxshape.h"
#endif

#ifndef SPRTMGR_H
#include "sprtmgr.h"
#endif

#ifndef APPRTYPE_H
#include "apprtype.h"
#endif

//---------------------------------------------------------------------------
// Statics
#define HEADER_OFFSET	8

//****************************************************************************
//
// class Shape member functions
//
//****************************************************************************
void Shape::destroy (void) 
{
	//----------------------------------------------------------------
	//-- First, tell our owner that we've gone away.
	//-- Owner simply NULLs the corresponding entry in its shapeList.
	if (owner)
	{
		owner->removeShape(this);
	}

	//----------------------------------------------------
	// The header points to the start of the memory block
	// all other pointer are internal to that block and do
	// NOT need to be deleted.  Please don't delete them
	// or the heap will fatal out!
	if (stupidHeader)
		spriteManager->freeShapeRAM(stupidHeader);
	else	
		spriteManager->freeShapeRAM(frameList);
		
	frameList = NULL;
}

#define STUPID_OFFSET	6
//----------------------------------------------------------------------------
long Shape::init (MemoryPtr fileBlock, AppearanceTypePtr myOwner, long shapeSize)
{
	//-----------------------------------------------------------------
	// Everything in the below comment is a LIE!!!
	//
	// The entire shape is now stored in a NewShape FSY shape file.
	// The entire shape file is loaded as the .FSY file and all info
	// is stored in the file format itself.  This solves all of the
	// crazy malloc issues previously associated with the sprites.
	//
	// Truth begins here.
	// This is simply the data holder for ALL shape types in the game EXCEPT mechs.
	if ((*(int*)fileBlock!=*(int*)"1.10"))
	{
		stupidHeader = fileBlock;
		frameList = fileBlock + STUPID_OFFSET;		//You can talk to GDoren about this one!!!
	}
	else
	{
		stupidHeader = NULL;
		frameList = fileBlock;
	}
	
	long numFrames = VFX_shape_count(frameList);

	if (!numFrames)
	{
		return(-1);		//There are no frames, this shape is NULL!!
	}

	owner = myOwner;
	
	if (numFrames)
	{
		long *testOffset = (long *)(frameList + 8);
		if (*testOffset >= shapeSize)
		{
			frameList = NULL;
			return(-3);
		}
		
		long minOffset = 8 + (numFrames * 8);		//The first shape MUST be this far in or WRONG
		if (minOffset != *testOffset)
		{
			frameList = NULL;
			return(-4);
		}
	}
	
	return(NO_ERR);
}

//----------------------------------------------------------------------------