summaryrefslogtreecommitdiff
path: root/src/client/tile.h
blob: 5eec0f2ea843afb77adb5e20875a80b1205af69a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
/*
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_v3d.h"
#include <ITexture.h>
#include <IrrlichtDevice.h>
#include "threads.h"
#include <string>
#include <vector>
#include "util/numeric.h"

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);

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 video::ITexture* getTextureForMesh(
			const std::string &name, u32 *id = NULL) = 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 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;
	virtual video::SColor getTextureAverageColor(const std::string &name)=0;
	virtual video::ITexture *getShaderFlagsTexture(bool normalmap_present)=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;
	virtual video::SColor getTextureAverageColor(const std::string &name)=0;
	virtual video::ITexture *getShaderFlagsTexture(bool normalmap_present)=0;
};

IWritableTextureSource* createTextureSource(IrrlichtDevice *device);

#ifdef __ANDROID__
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
#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():
		texture_id(0),
		texture(NULL),
		normal_texture(NULL),
		flags_texture(NULL)
	{
	}
	u32 texture_id;
	video::ITexture *texture;
	video::ITexture *normal_texture;
	video::ITexture *flags_texture;
};

struct TileSpec
{
	TileSpec():
		texture_id(0),
		texture(NULL),
		normal_texture(NULL),
		flags_texture(NULL),
		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),
		has_color(false),
		color(),
		emissive_light(0)
	{
	}

	/*!
	 * Two tiles are equal if they can be appended to
	 * the same mesh buffer.
	 */
	bool operator==(const TileSpec &other) const
	{
		return (
			texture_id == other.texture_id &&
			material_type == other.material_type &&
			material_flags == other.material_flags &&
			rotation == other.rotation
		);
	}

	/*!
	 * Two tiles are not equal if they must be in different mesh buffers.
	 */
	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_ALPHA_CHANNEL;
			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;
		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)
			? true : false;
		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;
		}
	}
	
	u32 texture_id;
	video::ITexture *texture;
	video::ITexture *normal_texture;
	video::ITexture *flags_texture;
	
	// 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;
	//! If true, the tile has its own color.
	bool has_color;
	/*!
	 * 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;
	//! This much light does the tile emit.
	u8 emissive_light;
};
#endif