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- /*
- Minetest
- Copyright (C) 2010-2013 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 "irrlichttypes.h"
- #include "irr_v3d.h"
- #include <ITexture.h>
- #include <string>
- #include <vector>
- #include <SMaterial.h>
- #include <memory>
- #include "util/numeric.h"
- #include "config.h"
- #if ENABLE_GLES
- #include <IVideoDriver.h>
- #endif
- class IGameDef;
- struct TileSpec;
- struct TileDef;
- typedef std::vector<video::SColor> Palette;
- /*
- tile.{h,cpp}: Texture handling stuff.
- */
- /*
- Find out the full path of an image by trying different filename
- extensions.
- If failed, return "".
- TODO: Should probably be moved out from here, because things needing
- this function do not need anything else from this header
- */
- std::string getImagePath(std::string path);
- /*
- Gets the path to a texture by first checking if the texture exists
- in texture_path and if not, using the data path.
- Checks all supported extensions by replacing the original extension.
- If not found, returns "".
- Utilizes a thread-safe cache.
- */
- std::string getTexturePath(const std::string &filename, bool *is_base_pack = nullptr);
- void clearTextureNameCache();
- /*
- TextureSource creates and caches textures.
- */
- class ISimpleTextureSource
- {
- public:
- ISimpleTextureSource() = default;
- virtual ~ISimpleTextureSource() = default;
- virtual video::ITexture* getTexture(
- const std::string &name, u32 *id = nullptr) = 0;
- };
- class ITextureSource : public ISimpleTextureSource
- {
- public:
- ITextureSource() = default;
- virtual ~ITextureSource() = default;
- virtual u32 getTextureId(const std::string &name)=0;
- virtual std::string getTextureName(u32 id)=0;
- virtual video::ITexture* getTexture(u32 id)=0;
- virtual video::ITexture* getTexture(
- const std::string &name, u32 *id = nullptr)=0;
- virtual video::ITexture* getTextureForMesh(
- const std::string &name, u32 *id = nullptr) = 0;
- /*!
- * Returns a palette from the given texture name.
- * The pointer is valid until the texture source is
- * destructed.
- * Should be called from the main thread.
- */
- virtual Palette* getPalette(const std::string &name) = 0;
- virtual bool isKnownSourceImage(const std::string &name)=0;
- virtual video::ITexture* getNormalTexture(const std::string &name)=0;
- virtual video::SColor getTextureAverageColor(const std::string &name)=0;
- virtual video::ITexture *getShaderFlagsTexture(bool normalmap_present)=0;
- };
- class IWritableTextureSource : public ITextureSource
- {
- public:
- IWritableTextureSource() = default;
- virtual ~IWritableTextureSource() = default;
- virtual u32 getTextureId(const std::string &name)=0;
- virtual std::string getTextureName(u32 id)=0;
- virtual video::ITexture* getTexture(u32 id)=0;
- virtual video::ITexture* getTexture(
- const std::string &name, u32 *id = nullptr)=0;
- virtual bool isKnownSourceImage(const std::string &name)=0;
- virtual void processQueue()=0;
- virtual void insertSourceImage(const std::string &name, video::IImage *img)=0;
- virtual void rebuildImagesAndTextures()=0;
- virtual video::ITexture* getNormalTexture(const std::string &name)=0;
- virtual video::SColor getTextureAverageColor(const std::string &name)=0;
- virtual video::ITexture *getShaderFlagsTexture(bool normalmap_present)=0;
- };
- IWritableTextureSource *createTextureSource();
- #if ENABLE_GLES
- bool hasNPotSupport();
- video::IImage * Align2Npot2(video::IImage * image, irr::video::IVideoDriver* driver);
- #endif
- enum MaterialType{
- TILE_MATERIAL_BASIC,
- TILE_MATERIAL_ALPHA,
- TILE_MATERIAL_LIQUID_TRANSPARENT,
- TILE_MATERIAL_LIQUID_OPAQUE,
- TILE_MATERIAL_WAVING_LEAVES,
- TILE_MATERIAL_WAVING_PLANTS,
- TILE_MATERIAL_OPAQUE,
- TILE_MATERIAL_WAVING_LIQUID_BASIC,
- TILE_MATERIAL_WAVING_LIQUID_TRANSPARENT,
- TILE_MATERIAL_WAVING_LIQUID_OPAQUE,
- TILE_MATERIAL_PLAIN,
- TILE_MATERIAL_PLAIN_ALPHA
- };
- // Material flags
- // Should backface culling be enabled?
- #define MATERIAL_FLAG_BACKFACE_CULLING 0x01
- // Should a crack be drawn?
- #define MATERIAL_FLAG_CRACK 0x02
- // Should the crack be drawn on transparent pixels (unset) or not (set)?
- // Ignored if MATERIAL_FLAG_CRACK is not set.
- #define MATERIAL_FLAG_CRACK_OVERLAY 0x04
- #define MATERIAL_FLAG_ANIMATION 0x08
- //#define MATERIAL_FLAG_HIGHLIGHTED 0x10
- #define MATERIAL_FLAG_TILEABLE_HORIZONTAL 0x20
- #define MATERIAL_FLAG_TILEABLE_VERTICAL 0x40
- /*
- This fully defines the looks of a tile.
- The SMaterial of a tile is constructed according to this.
- */
- struct FrameSpec
- {
- FrameSpec() = default;
- u32 texture_id = 0;
- video::ITexture *texture = nullptr;
- video::ITexture *normal_texture = nullptr;
- video::ITexture *flags_texture = nullptr;
- };
- #define MAX_TILE_LAYERS 2
- //! Defines a layer of a tile.
- struct TileLayer
- {
- TileLayer() = default;
- /*!
- * Two layers are equal if they can be merged.
- */
- bool operator==(const TileLayer &other) const
- {
- return
- texture_id == other.texture_id &&
- material_type == other.material_type &&
- material_flags == other.material_flags &&
- color == other.color &&
- scale == other.scale;
- }
- /*!
- * Two tiles are not equal if they must have different vertices.
- */
- bool operator!=(const TileLayer &other) const
- {
- return !(*this == other);
- }
- // Sets everything else except the texture in the material
- void applyMaterialOptions(video::SMaterial &material) const
- {
- switch (material_type) {
- case TILE_MATERIAL_OPAQUE:
- case TILE_MATERIAL_LIQUID_OPAQUE:
- case TILE_MATERIAL_WAVING_LIQUID_OPAQUE:
- material.MaterialType = video::EMT_SOLID;
- break;
- case TILE_MATERIAL_BASIC:
- case TILE_MATERIAL_WAVING_LEAVES:
- case TILE_MATERIAL_WAVING_PLANTS:
- case TILE_MATERIAL_WAVING_LIQUID_BASIC:
- material.MaterialTypeParam = 0.5;
- material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
- break;
- case TILE_MATERIAL_ALPHA:
- case TILE_MATERIAL_LIQUID_TRANSPARENT:
- case TILE_MATERIAL_WAVING_LIQUID_TRANSPARENT:
- material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
- break;
- default:
- break;
- }
- material.BackfaceCulling = (material_flags & MATERIAL_FLAG_BACKFACE_CULLING) != 0;
- if (!(material_flags & MATERIAL_FLAG_TILEABLE_HORIZONTAL)) {
- material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
- }
- if (!(material_flags & MATERIAL_FLAG_TILEABLE_VERTICAL)) {
- material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
- }
- }
- void applyMaterialOptionsWithShaders(video::SMaterial &material) const
- {
- material.BackfaceCulling = (material_flags & MATERIAL_FLAG_BACKFACE_CULLING) != 0;
- if (!(material_flags & MATERIAL_FLAG_TILEABLE_HORIZONTAL)) {
- material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
- material.TextureLayer[1].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
- }
- if (!(material_flags & MATERIAL_FLAG_TILEABLE_VERTICAL)) {
- material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
- material.TextureLayer[1].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
- }
- }
- bool isTileable() const
- {
- return (material_flags & MATERIAL_FLAG_TILEABLE_HORIZONTAL)
- && (material_flags & MATERIAL_FLAG_TILEABLE_VERTICAL);
- }
- // Ordered for size, please do not reorder
- video::ITexture *texture = nullptr;
- video::ITexture *normal_texture = nullptr;
- video::ITexture *flags_texture = nullptr;
- u32 shader_id = 0;
- u32 texture_id = 0;
- u16 animation_frame_length_ms = 0;
- u8 animation_frame_count = 1;
- u8 material_type = TILE_MATERIAL_BASIC;
- u8 material_flags =
- //0 // <- DEBUG, Use the one below
- MATERIAL_FLAG_BACKFACE_CULLING |
- MATERIAL_FLAG_TILEABLE_HORIZONTAL|
- MATERIAL_FLAG_TILEABLE_VERTICAL;
- //! If true, the tile has its own color.
- bool has_color = false;
- std::shared_ptr<std::vector<FrameSpec>> frames = nullptr;
- /*!
- * The color of the tile, or if the tile does not own
- * a color then the color of the node owning this tile.
- */
- video::SColor color;
- u8 scale;
- };
- /*!
- * Defines a face of a node. May have up to two layers.
- */
- struct TileSpec
- {
- TileSpec() = default;
- /*!
- * Returns true if this tile can be merged with the other tile.
- */
- bool isTileable(const TileSpec &other) const {
- for (int layer = 0; layer < MAX_TILE_LAYERS; layer++) {
- if (layers[layer] != other.layers[layer])
- return false;
- if (!layers[layer].isTileable())
- return false;
- }
- return rotation == 0
- && rotation == other.rotation
- && emissive_light == other.emissive_light;
- }
- //! If true, the tile rotation is ignored.
- bool world_aligned = false;
- //! Tile rotation.
- u8 rotation = 0;
- //! This much light does the tile emit.
- u8 emissive_light = 0;
- //! The first is base texture, the second is overlay.
- TileLayer layers[MAX_TILE_LAYERS];
- };
- std::vector<std::string> getTextureDirs();
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