minetest/src/tile.cpp

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2010-12-14 00:59:56 +01:00
/*
Minetest-c55
Copyright (C) 2010 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 General Public License as published by
the Free Software Foundation; either version 2 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 General Public License for more details.
You should have received a copy of the GNU 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.
*/
#include "tile.h"
#include "debug.h"
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TextureSource::TextureSource(IrrlichtDevice *device):
m_device(device),
m_main_atlas_image(NULL),
m_main_atlas_texture(NULL)
{
assert(m_device);
m_atlaspointer_cache_mutex.Init();
m_main_thread = get_current_thread_id();
// Add a NULL AtlasPointer as the first index, named ""
m_atlaspointer_cache.push_back(SourceAtlasPointer(""));
m_name_to_id[""] = 0;
// Build main texture atlas
buildMainAtlas();
}
TextureSource::~TextureSource()
{
}
void TextureSource::processQueue()
{
/*
Fetch textures
*/
if(m_get_texture_queue.size() > 0)
{
GetRequest<std::string, u32, u8, u8>
request = m_get_texture_queue.pop();
dstream<<"INFO: TextureSource::processQueue(): "
<<"got texture request with "
<<"name="<<request.key
<<std::endl;
GetResult<std::string, u32, u8, u8>
result;
result.key = request.key;
result.callers = request.callers;
result.item = getTextureIdDirect(request.key);
request.dest->push_back(result);
}
}
u32 TextureSource::getTextureId(const std::string &name)
{
//dstream<<"INFO: getTextureId(): name="<<name<<std::endl;
{
/*
See if texture already exists
*/
JMutexAutoLock lock(m_atlaspointer_cache_mutex);
core::map<std::string, u32>::Node *n;
n = m_name_to_id.find(name);
if(n != NULL)
{
return n->getValue();
}
}
/*
Get texture
*/
if(get_current_thread_id() == m_main_thread)
{
return getTextureIdDirect(name);
}
else
{
dstream<<"INFO: getTextureId(): Queued: name="<<name<<std::endl;
// We're gonna ask the result to be put into here
ResultQueue<std::string, u32, u8, u8> result_queue;
// Throw a request in
m_get_texture_queue.add(name, 0, 0, &result_queue);
dstream<<"INFO: Waiting for texture from main thread, name="
<<name<<std::endl;
try
{
// Wait result for a second
GetResult<std::string, u32, u8, u8>
result = result_queue.pop_front(1000);
// Check that at least something worked OK
assert(result.key == name);
return result.item;
}
catch(ItemNotFoundException &e)
{
dstream<<"WARNING: Waiting for texture timed out."<<std::endl;
return 0;
}
}
dstream<<"WARNING: getTextureId(): Failed"<<std::endl;
return 0;
}
// Draw a progress bar on the image
void make_progressbar(float value, video::IImage *image);
/*
Generate image based on a string like "stone.png" or "[crack0".
if baseimg is NULL, it is created. Otherwise stuff is made on it.
*/
bool generate_image(std::string part_of_name, video::IImage *& baseimg,
video::IVideoDriver* driver);
/*
Generates an image from a full string like
"stone.png^mineral_coal.png^[crack0".
This is used by buildMainAtlas().
*/
video::IImage* generate_image_from_scratch(std::string name,
video::IVideoDriver* driver);
/*
This method generates all the textures
*/
u32 TextureSource::getTextureIdDirect(const std::string &name)
{
dstream<<"INFO: getTextureIdDirect(): name="<<name<<std::endl;
// Empty name means texture 0
if(name == "")
{
dstream<<"INFO: getTextureIdDirect(): name is empty"<<std::endl;
return 0;
}
/*
Calling only allowed from main thread
*/
if(get_current_thread_id() != m_main_thread)
{
dstream<<"ERROR: TextureSource::getTextureIdDirect() "
"called not from main thread"<<std::endl;
return 0;
}
/*
See if texture already exists
*/
{
JMutexAutoLock lock(m_atlaspointer_cache_mutex);
core::map<std::string, u32>::Node *n;
n = m_name_to_id.find(name);
if(n != NULL)
{
dstream<<"INFO: getTextureIdDirect(): name="<<name
<<" found in cache"<<std::endl;
return n->getValue();
}
}
dstream<<"INFO: getTextureIdDirect(): name="<<name
<<" NOT found in cache. Creating it."<<std::endl;
/*
Get the base image
*/
char separator = '^';
/*
This is set to the id of the base image.
If left 0, there is no base image and a completely new image
is made.
*/
u32 base_image_id = 0;
// Find last meta separator in name
s32 last_separator_position = -1;
for(s32 i=name.size()-1; i>=0; i--)
{
if(name[i] == separator)
{
last_separator_position = i;
break;
}
}
/*
If separator was found, construct the base name and make the
base image using a recursive call
*/
std::string base_image_name;
if(last_separator_position != -1)
{
// Construct base name
base_image_name = name.substr(0, last_separator_position);
dstream<<"INFO: getTextureIdDirect(): Calling itself recursively"
" to get base image, name="<<base_image_name<<std::endl;
base_image_id = getTextureIdDirect(base_image_name);
}
dstream<<"base_image_id="<<base_image_id<<std::endl;
video::IVideoDriver* driver = m_device->getVideoDriver();
assert(driver);
video::ITexture *t = NULL;
/*
An image will be built from files and then converted into a texture.
*/
video::IImage *baseimg = NULL;
// If a base image was found, copy it to baseimg
if(base_image_id != 0)
{
JMutexAutoLock lock(m_atlaspointer_cache_mutex);
SourceAtlasPointer ap = m_atlaspointer_cache[base_image_id];
video::IImage *image = ap.atlas_img;
core::dimension2d<u32> dim = ap.intsize;
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
core::position2d<s32> pos_to(0,0);
core::position2d<s32> pos_from = ap.intpos;
image->copyTo(
baseimg, // target
v2s32(0,0), // position in target
core::rect<s32>(pos_from, dim) // from
);
dstream<<"INFO: getTextureIdDirect(): Loaded \""
<<base_image_name<<"\" from image cache"
<<std::endl;
}
/*
Parse out the last part of the name of the image and act
according to it
*/
std::string last_part_of_name = name.substr(last_separator_position+1);
dstream<<"last_part_of_name="<<last_part_of_name<<std::endl;
// Generate image according to part of name
if(generate_image(last_part_of_name, baseimg, driver) == false)
{
dstream<<"INFO: getTextureIdDirect(): "
"failed to generate \""<<last_part_of_name<<"\""
<<std::endl;
return 0;
}
// If no resulting image, return NULL
if(baseimg == NULL)
{
dstream<<"WARNING: getTextureIdDirect(): baseimg is NULL (attempted to"
" create texture \""<<name<<"\""<<std::endl;
return 0;
}
// Create texture from resulting image
t = driver->addTexture(name.c_str(), baseimg);
// If no texture
if(t == NULL)
return 0;
/*
Add texture to caches
*/
JMutexAutoLock lock(m_atlaspointer_cache_mutex);
u32 id = m_atlaspointer_cache.size();
AtlasPointer ap(id);
ap.atlas = t;
ap.pos = v2f(0,0);
ap.size = v2f(1,1);
ap.tiled = 0;
SourceAtlasPointer nap(name, ap, baseimg, v2s32(0,0), baseimg->getDimension());
m_atlaspointer_cache.push_back(nap);
m_name_to_id.insert(name, id);
dstream<<"INFO: getTextureIdDirect(): name="<<name
<<": succesfully returning id="<<id<<std::endl;
return id;
}
std::string TextureSource::getTextureName(u32 id)
{
JMutexAutoLock lock(m_atlaspointer_cache_mutex);
if(id >= m_atlaspointer_cache.size())
{
dstream<<"WARNING: TextureSource::getTextureName(): id="<<id
<<" >= m_atlaspointer_cache.size()="
<<m_atlaspointer_cache.size()<<std::endl;
return "";
}
return m_atlaspointer_cache[id].name;
}
AtlasPointer TextureSource::getTexture(u32 id)
{
JMutexAutoLock lock(m_atlaspointer_cache_mutex);
if(id >= m_atlaspointer_cache.size())
return AtlasPointer(0, NULL);
return m_atlaspointer_cache[id].a;
}
void TextureSource::buildMainAtlas()
{
dstream<<"TextureSource::buildMainAtlas()"<<std::endl;
//return; // Disable (for testing)
video::IVideoDriver* driver = m_device->getVideoDriver();
assert(driver);
JMutexAutoLock lock(m_atlaspointer_cache_mutex);
// Create an image of the right size
core::dimension2d<u32> atlas_dim(1024,1024);
video::IImage *atlas_img =
driver->createImage(video::ECF_A8R8G8B8, atlas_dim);
/*
A list of stuff to add. This should contain as much of the
stuff shown in game as possible, to minimize texture changes.
*/
core::array<std::string> sourcelist;
sourcelist.push_back("stone.png");
sourcelist.push_back("mud.png");
sourcelist.push_back("sand.png");
sourcelist.push_back("grass.png");
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sourcelist.push_back("grass_footsteps.png");
sourcelist.push_back("tree.png");
sourcelist.push_back("tree_top.png");
sourcelist.push_back("water.png");
sourcelist.push_back("leaves.png");
sourcelist.push_back("mud.png^grass_side.png");
sourcelist.push_back("stone.png^mineral_coal.png");
sourcelist.push_back("stone.png^mineral_iron.png");
sourcelist.push_back("mud.png^mineral_coal.png");
sourcelist.push_back("mud.png^mineral_iron.png");
sourcelist.push_back("sand.png^mineral_coal.png");
sourcelist.push_back("sand.png^mineral_iron.png");
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// Padding to disallow texture bleeding
s32 padding = 8;
/*
First pass: generate almost everything
*/
core::position2d<s32> pos_in_atlas(0,0);
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pos_in_atlas.Y += padding;
for(u32 i=0; i<sourcelist.size(); i++)
{
std::string name = sourcelist[i];
/*video::IImage *img = driver->createImageFromFile(
porting::getDataPath(name.c_str()).c_str());
if(img == NULL)
continue;
core::dimension2d<u32> dim = img->getDimension();
// Make a copy with the right color format
video::IImage *img2 =
driver->createImage(video::ECF_A8R8G8B8, dim);
img->copyTo(img2);
img->drop();*/
// Generate image by name
video::IImage *img2 = generate_image_from_scratch(name, driver);
core::dimension2d<u32> dim = img2->getDimension();
// Tile it a few times in the X direction
u16 xwise_tiling = 16;
for(u32 j=0; j<xwise_tiling; j++)
{
// Copy the copy to the atlas
img2->copyToWithAlpha(atlas_img,
pos_in_atlas + v2s32(j*dim.Width,0),
core::rect<s32>(v2s32(0,0), dim),
video::SColor(255,255,255,255),
NULL);
}
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// Copy the borders a few times to disallow texture bleeding
for(u32 side=0; side<2; side++) // top and bottom
for(s32 y0=0; y0<padding; y0++)
for(s32 x0=0; x0<(s32)xwise_tiling*(s32)dim.Width; x0++)
{
s32 dst_y;
s32 src_y;
if(side==0)
{
dst_y = y0 + pos_in_atlas.Y + dim.Height;
src_y = pos_in_atlas.Y + dim.Height - 1;
}
else
{
dst_y = -y0 + pos_in_atlas.Y-1;
src_y = pos_in_atlas.Y;
}
s32 x = x0 + pos_in_atlas.X * dim.Width;
video::SColor c = atlas_img->getPixel(x, src_y);
atlas_img->setPixel(x,dst_y,c);
}
img2->drop();
/*
Add texture to caches
*/
// Get next id
u32 id = m_atlaspointer_cache.size();
// Create AtlasPointer
AtlasPointer ap(id);
ap.atlas = NULL; // Set on the second pass
ap.pos = v2f((float)pos_in_atlas.X/(float)atlas_dim.Width,
(float)pos_in_atlas.Y/(float)atlas_dim.Height);
ap.size = v2f((float)dim.Width/(float)atlas_dim.Width,
(float)dim.Width/(float)atlas_dim.Height);
ap.tiled = xwise_tiling;
// Create SourceAtlasPointer and add to containers
SourceAtlasPointer nap(name, ap, atlas_img, pos_in_atlas, dim);
m_atlaspointer_cache.push_back(nap);
m_name_to_id.insert(name, id);
// Increment position
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pos_in_atlas.Y += dim.Height + padding * 2;
}
/*
Make texture
*/
video::ITexture *t = driver->addTexture("__main_atlas__", atlas_img);
assert(t);
/*
Second pass: set texture pointer in generated AtlasPointers
*/
for(u32 i=0; i<sourcelist.size(); i++)
{
std::string name = sourcelist[i];
u32 id = m_name_to_id[name];
m_atlaspointer_cache[id].a.atlas = t;
}
/*
Write image to file so that it can be inspected
*/
driver->writeImageToFile(atlas_img,
porting::getDataPath("main_atlas.png").c_str());
}
video::IImage* generate_image_from_scratch(std::string name,
video::IVideoDriver* driver)
{
dstream<<"INFO: generate_image_from_scratch(): "
"name="<<name<<std::endl;
/*
Get the base image
*/
video::IImage *baseimg = NULL;
char separator = '^';
// Find last meta separator in name
s32 last_separator_position = -1;
for(s32 i=name.size()-1; i>=0; i--)
{
if(name[i] == separator)
{
last_separator_position = i;
break;
}
}
/*dstream<<"INFO: generate_image_from_scratch(): "
<<"last_separator_position="<<last_separator_position
<<std::endl;*/
/*
If separator was found, construct the base name and make the
base image using a recursive call
*/
std::string base_image_name;
if(last_separator_position != -1)
{
// Construct base name
base_image_name = name.substr(0, last_separator_position);
dstream<<"INFO: generate_image_from_scratch(): Calling itself recursively"
" to get base image, name="<<base_image_name<<std::endl;
baseimg = generate_image_from_scratch(base_image_name, driver);
}
/*
Parse out the last part of the name of the image and act
according to it
*/
std::string last_part_of_name = name.substr(last_separator_position+1);
dstream<<"last_part_of_name="<<last_part_of_name<<std::endl;
// Generate image according to part of name
if(generate_image(last_part_of_name, baseimg, driver) == false)
{
dstream<<"INFO: generate_image_from_scratch(): "
"failed to generate \""<<last_part_of_name<<"\""
<<std::endl;
return NULL;
}
return baseimg;
}
bool generate_image(std::string part_of_name, video::IImage *& baseimg,
video::IVideoDriver* driver)
{
// Stuff starting with [ are special commands
if(part_of_name[0] != '[')
{
// A normal texture; load it from a file
std::string path = porting::getDataPath(part_of_name.c_str());
dstream<<"INFO: getTextureIdDirect(): Loading path \""<<path
<<"\""<<std::endl;
video::IImage *image = driver->createImageFromFile(path.c_str());
if(image == NULL)
{
dstream<<"WARNING: Could not load image \""<<part_of_name
<<"\" from path \""<<path<<"\""
<<" while building texture"<<std::endl;
return false;
}
// If base image is NULL, load as base.
if(baseimg == NULL)
{
dstream<<"INFO: Setting "<<part_of_name<<" as base"<<std::endl;
/*
Copy it this way to get an alpha channel.
Otherwise images with alpha cannot be blitted on
images that don't have alpha in the original file.
*/
core::dimension2d<u32> dim = image->getDimension();
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
image->copyTo(baseimg);
image->drop();
}
// Else blit on base.
else
{
dstream<<"INFO: Blitting "<<part_of_name<<" on base"<<std::endl;
// Size of the copied area
core::dimension2d<u32> dim = image->getDimension();
//core::dimension2d<u32> dim(16,16);
// Position to copy the blitted to in the base image
core::position2d<s32> pos_to(0,0);
// Position to copy the blitted from in the blitted image
core::position2d<s32> pos_from(0,0);
// Blit
image->copyToWithAlpha(baseimg, pos_to,
core::rect<s32>(pos_from, dim),
video::SColor(255,255,255,255),
NULL);
// Drop image
image->drop();
}
}
else
{
// A special texture modification
dstream<<"INFO: getTextureIdDirect(): generating special "
<<"modification \""<<part_of_name<<"\""
<<std::endl;
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/*
This is the simplest of all; it just adds stuff to the
name so that a separate texture is created.
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It is used to make textures for stuff that doesn't want
to implement getting the texture from a bigger texture
atlas.
*/
if(part_of_name == "[forcesingle")
{
}
/*
[crackN
Adds a cracking texture
*/
else if(part_of_name.substr(0,6) == "[crack")
{
if(baseimg == NULL)
{
dstream<<"WARNING: getTextureIdDirect(): baseimg==NULL "
<<"for part_of_name="<<part_of_name
<<", cancelling."<<std::endl;
return false;
}
u16 progression = stoi(part_of_name.substr(6));
// Size of the base image
core::dimension2d<u32> dim_base = baseimg->getDimension();
// Crack will be drawn at this size
u32 cracksize = 16;
// Size of the crack image
core::dimension2d<u32> dim_crack(cracksize,cracksize);
// Position to copy the crack from in the crack image
core::position2d<s32> pos_other(0, 16 * progression);
video::IImage *crackimage = driver->createImageFromFile(
porting::getDataPath("crack.png").c_str());
if(crackimage)
{
/*crackimage->copyToWithAlpha(baseimg, v2s32(0,0),
core::rect<s32>(pos_other, dim_base),
video::SColor(255,255,255,255),
NULL);*/
for(u32 y0=0; y0<dim_base.Height/dim_crack.Height; y0++)
for(u32 x0=0; x0<dim_base.Width/dim_crack.Width; x0++)
{
// Position to copy the crack to in the base image
core::position2d<s32> pos_base(x0*cracksize, y0*cracksize);
crackimage->copyToWithAlpha(baseimg, pos_base,
core::rect<s32>(pos_other, dim_crack),
video::SColor(255,255,255,255),
NULL);
}
crackimage->drop();
}
}
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/*
[combine:WxH:X,Y=filename:X,Y=filename2
Creates a bigger texture from an amount of smaller ones
*/
else if(part_of_name.substr(0,8) == "[combine")
{
Strfnd sf(part_of_name);
sf.next(":");
u32 w0 = stoi(sf.next("x"));
u32 h0 = stoi(sf.next(":"));
dstream<<"INFO: combined w="<<w0<<" h="<<h0<<std::endl;
core::dimension2d<u32> dim(w0,h0);
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
while(sf.atend() == false)
{
u32 x = stoi(sf.next(","));
u32 y = stoi(sf.next("="));
std::string filename = sf.next(":");
dstream<<"INFO: Adding \""<<filename
<<"\" to combined ("<<x<<","<<y<<")"
<<std::endl;
video::IImage *img = driver->createImageFromFile(
porting::getDataPath(filename.c_str()).c_str());
if(img)
{
core::dimension2d<u32> dim = img->getDimension();
dstream<<"INFO: Size "<<dim.Width
<<"x"<<dim.Height<<std::endl;
core::position2d<s32> pos_base(x, y);
video::IImage *img2 =
driver->createImage(video::ECF_A8R8G8B8, dim);
img->copyTo(img2);
img->drop();
img2->copyToWithAlpha(baseimg, pos_base,
core::rect<s32>(v2s32(0,0), dim),
video::SColor(255,255,255,255),
NULL);
img2->drop();
}
else
{
dstream<<"WARNING: img==NULL"<<std::endl;
}
}
}
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/*
[progressbarN
Adds a progress bar, 0.0 <= N <= 1.0
*/
else if(part_of_name.substr(0,12) == "[progressbar")
{
if(baseimg == NULL)
{
dstream<<"WARNING: getTextureIdDirect(): baseimg==NULL "
<<"for part_of_name="<<part_of_name
<<", cancelling."<<std::endl;
return false;
}
float value = stof(part_of_name.substr(12));
make_progressbar(value, baseimg);
}
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/*
"[noalpha:filename.png"
Use an image without it's alpha channel.
Used for the leaves texture when in old leaves mode, so
that the transparent parts don't look completely black
when simple alpha channel is used for rendering.
*/
else if(part_of_name.substr(0,8) == "[noalpha")
{
if(baseimg != NULL)
{
dstream<<"WARNING: getTextureIdDirect(): baseimg!=NULL "
<<"for part_of_name="<<part_of_name
<<", cancelling."<<std::endl;
return false;
}
std::string filename = part_of_name.substr(9);
std::string path = porting::getDataPath(filename.c_str());
dstream<<"INFO: getTextureIdDirect(): Loading path \""<<path
<<"\""<<std::endl;
video::IImage *image = driver->createImageFromFile(path.c_str());
if(image == NULL)
{
dstream<<"WARNING: getTextureIdDirect(): Loading path \""
<<path<<"\" failed"<<std::endl;
}
else
{
core::dimension2d<u32> dim = image->getDimension();
baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
// Set alpha to full
for(u32 y=0; y<dim.Height; y++)
for(u32 x=0; x<dim.Width; x++)
{
video::SColor c = image->getPixel(x,y);
c.setAlpha(255);
image->setPixel(x,y,c);
}
// Blit
image->copyTo(baseimg);
image->drop();
}
}
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/*
[inventorycube{topimage{leftimage{rightimage
In every subimage, replace ^ with &.
Create an "inventory cube".
NOTE: This should be used only on its own.
Example (a grass block (not actually used in game):
"[inventorycube{grass.png{mud.png&grass_side.png{mud.png&grass_side.png"
*/
else if(part_of_name.substr(0,14) == "[inventorycube")
{
if(baseimg != NULL)
{
dstream<<"WARNING: getTextureIdDirect(): baseimg!=NULL "
<<"for part_of_name="<<part_of_name
<<", cancelling."<<std::endl;
return false;
}
// This is just a placeholder
str_replace_char(part_of_name, '&', '^');
Strfnd sf(part_of_name);
sf.next("{");
std::string imagename_top = sf.next("{");
std::string imagename_left = sf.next("{");
std::string imagename_right = sf.next("{");
baseimg = generate_image_from_scratch(
imagename_top, driver);
//TODO
#if 0
if(driver->queryFeature(video::EVDF_RENDER_TO_TARGET) == false)
{
dstream<<"WARNING: getTextureIdDirect(): EVDF_RENDER_TO_TARGET"
" not supported"<<std::endl;
return false;
}
u32 w0 = 16;
u32 h0 = 16;
dstream<<"INFO: inventorycube w="<<w0<<" h="<<h0<<std::endl;
core::dimension2d<u32> dim(w0,h0);
//baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
video::IImage *img_top = generate_image_from_scratch(
imagename_top, driver);
video::IImage *img_left = generate_image_from_scratch(
imagename_left, driver);
video::IImage *img_right = generate_image_from_scratch(
imagename_right, driver);
// Render target texture
video::ITexture *rtt = NULL;
std::string rtt_name = part_of_name + "_RTT";
rtt = driver->addRenderTargetTexture(dim, rtt_name.c_str());
assert(rtt);
img_top->drop();
img_left->drop();
img_right->drop();
//TODO
assert(0);
#endif
}
else
{
dstream<<"WARNING: getTextureIdDirect(): Invalid "
" modification: \""<<part_of_name<<"\""<<std::endl;
}
}
return true;
}
void make_progressbar(float value, video::IImage *image)
{
if(image == NULL)
return;
core::dimension2d<u32> size = image->getDimension();
u32 barheight = 1;
u32 barpad_x = 1;
u32 barpad_y = 1;
u32 barwidth = size.Width - barpad_x*2;
v2u32 barpos(barpad_x, size.Height - barheight - barpad_y);
u32 barvalue_i = (u32)(((float)barwidth * value) + 0.5);
video::SColor active(255,255,0,0);
video::SColor inactive(255,0,0,0);
for(u32 x0=0; x0<barwidth; x0++)
{
video::SColor *c;
if(x0 < barvalue_i)
c = &active;
else
c = &inactive;
u32 x = x0 + barpos.X;
for(u32 y=barpos.Y; y<barpos.Y+barheight; y++)
{
image->setPixel(x,y, *c);
}
}
}
2010-12-20 21:03:49 +01:00