1 files changed, 280 insertions, 0 deletions
diff --git a/src/client/tile.h b/src/client/tile.h
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--- /dev/null
+++ b/src/client/tile.h
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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.
+*/
+
+#ifndef TILE_HEADER
+#define TILE_HEADER
+
+#include "irrlichttypes.h"
+#include "irr_v2d.h"
+#include "irr_v3d.h"
+#include <ITexture.h>
+#include <IrrlichtDevice.h>
+#include "threads.h"
+#include <string>
+#include <vector>
+
+class IGameDef;
+
+/*
+	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);
+
+void clearTextureNameCache();
+
+/*
+	ITextureSource::generateTextureFromMesh parameters
+*/
+namespace irr {namespace scene {class IMesh;}}
+struct TextureFromMeshParams
+{
+	scene::IMesh *mesh;
+	core::dimension2d<u32> dim;
+	std::string rtt_texture_name;
+	bool delete_texture_on_shutdown;
+	v3f camera_position;
+	v3f camera_lookat;
+	core::CMatrix4<f32> camera_projection_matrix;
+	video::SColorf ambient_light;
+	v3f light_position;
+	video::SColorf light_color;
+	f32 light_radius;
+};
+
+/*
+	TextureSource creates and caches textures.
+*/
+
+class ISimpleTextureSource
+{
+public:
+	ISimpleTextureSource(){}
+	virtual ~ISimpleTextureSource(){}
+	virtual video::ITexture* getTexture(
+			const std::string &name, u32 *id = NULL) = 0;
+};
+
+class ITextureSource : public ISimpleTextureSource
+{
+public:
+	ITextureSource(){}
+	virtual ~ITextureSource(){}
+	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 = NULL)=0;
+	virtual IrrlichtDevice* getDevice()=0;
+	virtual bool isKnownSourceImage(const std::string &name)=0;
+	virtual video::ITexture* generateTextureFromMesh(
+			const TextureFromMeshParams &params)=0;
+	virtual video::ITexture* getNormalTexture(const std::string &name)=0;
+};
+
+class IWritableTextureSource : public ITextureSource
+{
+public:
+	IWritableTextureSource(){}
+	virtual ~IWritableTextureSource(){}
+	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 = NULL)=0;
+	virtual IrrlichtDevice* getDevice()=0;
+	virtual bool isKnownSourceImage(const std::string &name)=0;
+	virtual video::ITexture* generateTextureFromMesh(
+			const TextureFromMeshParams &params)=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;
+};
+
+IWritableTextureSource* createTextureSource(IrrlichtDevice *device);
+
+#ifdef __ANDROID__
+/**
+ * @param size get next npot2 value
+ * @return npot2 value
+ */
+inline unsigned int npot2(unsigned int size)
+{
+	if (size == 0) return 0;
+	unsigned int npot = 1;
+
+	while ((size >>= 1) > 0) {
+		npot <<= 1;
+	}
+	return npot;
+}
+
+video::IImage * Align2Npot2(video::IImage * image, 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
+};
+
+// 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
+// Animation made up by splitting the texture to vertical frames, as
+// defined by extra parameters
+#define MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES 0x08
+#define MATERIAL_FLAG_HIGHLIGHTED 0x10
+
+/*
+	This fully defines the looks of a tile.
+	The SMaterial of a tile is constructed according to this.
+*/
+struct FrameSpec
+{
+	FrameSpec():
+		texture_id(0),
+		texture(NULL),
+		normal_texture(NULL)
+	{
+	}
+	u32 texture_id;
+	video::ITexture *texture;
+	video::ITexture *normal_texture;
+};
+
+struct TileSpec
+{
+	TileSpec():
+		texture_id(0),
+		texture(NULL),
+		normal_texture(NULL),
+		alpha(255),
+		material_type(TILE_MATERIAL_BASIC),
+		material_flags(
+			//0 // <- DEBUG, Use the one below
+			MATERIAL_FLAG_BACKFACE_CULLING
+		),
+		shader_id(0),
+		animation_frame_count(1),
+		animation_frame_length_ms(0),
+		rotation(0)
+	{
+	}
+
+	bool operator==(const TileSpec &other) const
+	{
+		return (
+			texture_id == other.texture_id &&
+			/* texture == other.texture && */
+			alpha == other.alpha &&
+			material_type == other.material_type &&
+			material_flags == other.material_flags &&
+			rotation == other.rotation
+		);
+	}
+
+	bool operator!=(const TileSpec &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_BASIC:
+			material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
+			break;
+		case TILE_MATERIAL_ALPHA:
+			material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+			break;
+		case TILE_MATERIAL_LIQUID_TRANSPARENT:
+			material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
+			break;
+		case TILE_MATERIAL_LIQUID_OPAQUE:
+			material.MaterialType = video::EMT_SOLID;
+			break;
+		case TILE_MATERIAL_WAVING_LEAVES:
+			material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
+			break;
+		case TILE_MATERIAL_WAVING_PLANTS:
+			material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
+			break;
+		}
+		material.BackfaceCulling = (material_flags & MATERIAL_FLAG_BACKFACE_CULLING)
+			? true : false;
+	}
+
+	void applyMaterialOptionsWithShaders(video::SMaterial &material) const
+	{
+		material.BackfaceCulling = (material_flags & MATERIAL_FLAG_BACKFACE_CULLING)
+			? true : false;
+	}
+	
+	u32 texture_id;
+	video::ITexture *texture;
+	video::ITexture *normal_texture;
+	
+	// Vertex alpha (when MATERIAL_ALPHA_VERTEX is used)
+	u8 alpha;
+	// Material parameters
+	u8 material_type;
+	u8 material_flags;
+	u32 shader_id;
+	// Animation parameters
+	u8 animation_frame_count;
+	u16 animation_frame_length_ms;
+	std::vector<FrameSpec> frames;
+
+	u8 rotation;
+};
+
+#endif