/*
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.
*/

#include "render_world.h"
#include "device.h"
#include "allocator.h"
#include "camera.h"
#include "resource.h"
#include "log.h"
#include "sprite_resource.h"
#include "mesh.h"
#include "sprite.h"
#include "material.h"
#include "config.h"
#include "gui.h"
#include <bgfx.h>

namespace crown
{

RenderWorld::RenderWorld()
	: m_mesh_pool(default_allocator(), MAX_MESHES, sizeof(Mesh), CE_ALIGNOF(Mesh))
	, m_sprite_pool(default_allocator(), MAX_SPRITES, sizeof(Sprite), CE_ALIGNOF(Sprite))
	, m_gui_pool(default_allocator(), MAX_GUIS, sizeof(Gui), CE_ALIGNOF(Gui))
{
}

RenderWorld::~RenderWorld()
{
}

MeshId RenderWorld::create_mesh(MeshResource* mr, SceneGraph& sg, int32_t node)
{
	Mesh* mesh = CE_NEW(m_mesh_pool, Mesh)(sg, node, mr);
	return id_array::create(m_mesh, mesh);
}

void RenderWorld::destroy_mesh(MeshId id)
{
	Mesh* mesh = id_array::get(m_mesh, id);
	CE_DELETE(m_mesh_pool, mesh);
	id_array::destroy(m_mesh, id);
}

Mesh* RenderWorld::get_mesh(MeshId mesh)
{
	return id_array::get(m_mesh, mesh);
}

SpriteId RenderWorld::create_sprite(SpriteResource* sr, SceneGraph& sg, int32_t node)
{
	Sprite* sprite = CE_NEW(m_sprite_pool, Sprite)(*this, sg, node, sr);
	return id_array::create(m_sprite, sprite);
}

void RenderWorld::destroy_sprite(SpriteId id)
{
	CE_DELETE(m_sprite_pool, id_array::get(m_sprite, id));
	id_array::destroy(m_sprite, id);
}

Sprite*	RenderWorld::get_sprite(SpriteId id)
{
	return id_array::get(m_sprite, id);
}

GuiId RenderWorld::create_gui(uint16_t width, uint16_t height, const char* material)
{
	Gui* gui = CE_NEW(m_gui_pool, Gui)(width, height, material);
	GuiId id = id_array::create(m_guis, gui);
	gui->set_id(id);
	return id;
}

void RenderWorld::destroy_gui(GuiId id)
{
	CE_DELETE(m_gui_pool, id_array::get(m_guis, id));
	id_array::destroy(m_guis, id);
}

Gui* RenderWorld::get_gui(GuiId id)
{
	return id_array::get(m_guis, id);
}

void RenderWorld::update(const Matrix4x4& view, const Matrix4x4& projection, uint16_t x, uint16_t y, uint16_t width, uint16_t height, float dt)
{
	// Set view 0 clear state.
	bgfx::setViewClear(0
		, BGFX_CLEAR_COLOR_BIT|BGFX_CLEAR_DEPTH_BIT
		, 0x353839FF
		, 1.0f
		, 0
		);

	// Set view and projection matrix for view 0.
	bgfx::setViewTransform(0, matrix4x4::to_float_ptr(view), matrix4x4::to_float_ptr(projection));
	bgfx::setViewRect(0, 0, 0, width, height);

	// This dummy draw call is here to make sure that view 0 is cleared
	// if no other draw calls are submitted to view 0.
	bgfx::submit(0);

	// Draw all sprites
	for (uint32_t s = 0; s < id_array::size(m_sprite); s++)
	{
		m_sprite[s]->render();
	}
}

} // namespace crown