crown-engine/engine/resource/MeshResource.h

/*
Copyright (c) 2013 Daniele Bartolini, Michele Rossi
Copyright (c) 2012 Daniele Bartolini, Simone Boscaratto

Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
*/

#pragma once

#include "Types.h"
#include "Resource.h"
#include "PixelFormat.h"
#include "Texture.h"
#include "Allocator.h"
#include "Bundle.h"

namespace crown
{

// Bump the version whenever a change in the format is made.
const uint32_t MESH_VERSION = 1;

struct MeshHeader
{
	uint32_t	version;
	uint32_t	mesh_count;
	uint32_t	joint_count;
	uint32_t	padding[16];
};

class MeshResource
{
public:

	//-----------------------------------------------------------------------------
	static void* load(Allocator& allocator, Bundle& bundle, ResourceId id)
	{
		File* file = bundle.open(id);

		MeshResource* resource = (MeshResource*)allocator.allocate(sizeof(MeshResource));
		file->read(&resource->m_header, sizeof(MeshHeader));

		// Read vertices
		file->read(&resource->m_vertex_count, sizeof(uint32_t));
		resource->m_vertices = (float*) allocator.allocate(sizeof(float) * resource->m_vertex_count);
		file->read(resource->m_vertices, sizeof(float) * resource->m_vertex_count);

		// Read triangles
		file->read(&resource->m_index_count, sizeof(uint32_t));
		resource->m_indices = (uint16_t*) allocator.allocate(sizeof(uint16_t) * resource->m_index_count);
		file->read(resource->m_indices, sizeof(uint16_t) * resource->m_index_count);

		bundle.close(file);

		return resource;
	}

	//-----------------------------------------------------------------------------
	static void online(void* )
	{
	}

	//-----------------------------------------------------------------------------
	static void unload(Allocator& , void* )
	{
	}

	//-----------------------------------------------------------------------------
	static void offline(void* /*resource*/)
	{

	}

public:

	MeshHeader			m_header;

	size_t				m_vertex_count;
	float*				m_vertices;

	size_t				m_index_count;
	uint16_t*			m_indices;
};

} // namespace crown