games/minimal/mods/default/textures/default_steel_block.png

/*
Minetest
Copyright (C) 2010-2014 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#pragma once

#include <string>
#include <vector>
#include "irrlichttypes_extrabloated.h"

struct ItemStack;
class Client;
class ITextureSource;
struct ContentFeatures;

/*!
 * Holds color information of an item mesh's buffer.
 */
struct ItemPartColor
{
	/*!
	 * If this is false, the global base color of the item
	 * will be used instead of the specific color of the
	 * buffer.
	 */
	bool override_base = false;
	/*!
	 * The color of the buffer.
	 */
	video::SColor color = 0;

	ItemPartColor() = default;

	ItemPartColor(bool override, video::SColor color) :
			override_base(override), color(color)
	{
	}
};

struct ItemMesh
{
	scene::IMesh *mesh = nullptr;
	/*!
	 * Stores the color of each mesh buffer.
	 */
	std::vector<ItemPartColor> buffer_colors;
	/*!
	 * If false, all faces of the item should have the same brightness.
	 * Disables shading based on normal vectors.
	 */
	bool needs_shading = true;

	ItemMesh() = default;
};

/*
	Wield item scene node, renders the wield mesh of some item
*/
class WieldMeshSceneNode : public scene::ISceneNode
{
public:
	WieldMeshSceneNode(scene::ISceneManager *mgr, s32 id = -1, bool lighting = false);
	virtual ~WieldMeshSceneNode();

	void setCube(const ContentFeatures &f, v3f wield_scale);
	void setExtruded(const std::string &imagename, const std::string &overlay_image,
			v3f wield_scale, ITextureSource *tsrc, u8 num_frames);
	void setItem(const ItemStack &item, Client *client,
			bool check_wield_image = true);

	// Sets the vertex color of the wield mesh.
	// Must only be used if the constructor was called with lighting = false
	void setColor(video::SColor color);

	scene::IMesh *getMesh() { return m_meshnode->getMesh(); }

	virtual void render();

	virtual const aabb3f &getBoundingBox() const { return m_bounding_box; }

private:
	void changeToMesh(scene::IMesh *mesh);

	// Child scene node with the current wield mesh
	scene::IMeshSceneNode *m_meshnode = nullptr;
	video::E_MATERIAL_TYPE m_material_type;

	// True if EMF_LIGHTING should be enabled.
	bool m_lighting;

	bool m_enable_shaders;
	bool m_anisotropic_filter;
	bool m_bilinear_filter;
	bool m_trilinear_filter;
	/*!
	 * Stores the colors of the mesh's mesh buffers.
	 * This does not include lighting.
	 */
	std::vector<ItemPartColor> m_colors;
	/*!
	 * The base color of this mesh. This is the default
	 * for all mesh buffers.
	 */
	video::SColor m_base_color;

	// Bounding box culling is disabled for this type of scene node,
	// so this variable is just required so we can implement
	// getBoundingBox() and is set to an empty box.
	aabb3f m_bounding_box;
};

void getItemMesh(Client *client, const ItemStack &item, ItemMesh *result);

scene::SMesh *getExtrudedMesh(ITextureSource *tsrc, const std::string &imagename,
		const std::string &overlay_name);

/*!
 * Applies overlays, textures and optionally materials to the given mesh and
 * extracts tile colors for colorization.
ofs	hex dump	ascii
0000	89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 00 00 00 10 00 00 00 10 01 03 00 00 00 25 3d 6d	.PNG........IHDR.............%=m
0020	22 00 00 00 06 50 4c 54 45 c0 c0 c0 d4 d4 d4 c5 bd 2a 9c 00 00 00 35 49 44 41 54 08 5b 63 f8 ff	"....PLTE........*....5IDAT.[c..
0040	9f a1 41 90 a1 47 91 a1 c3 91 a1 01 88 1a 19 1a 19 19 1a 38 19 1a 24 19 5a 26 32 74 4c 64 98 ac	..A..G.............8..$.Z&2tLd..
0060	ca b0 c0 97 e1 00 27 48 d9 ff ff 00 59 df 0e 97 3f 70 47 dd 00 00 00 00 49 45 4e 44 ae 42 60 82	......'H....Y...?pG.....IEND.B`.