minetest/src/minimap.cpp

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/*
Minetest
Copyright (C) 2010-2015 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.
*/
#include "minimap.h"
#include "logoutputbuffer.h"
#include "jthread/jmutexautolock.h"
#include "jthread/jsemaphore.h"
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#include "clientmap.h"
#include "settings.h"
#include "nodedef.h"
#include "porting.h"
#include "util/numeric.h"
#include "util/string.h"
#include <math.h>
QueuedMinimapUpdate::QueuedMinimapUpdate():
pos(-1337,-1337,-1337),
data(NULL)
{
}
QueuedMinimapUpdate::~QueuedMinimapUpdate()
{
delete data;
}
MinimapUpdateQueue::MinimapUpdateQueue()
{
}
MinimapUpdateQueue::~MinimapUpdateQueue()
{
JMutexAutoLock lock(m_mutex);
for (std::list<QueuedMinimapUpdate*>::iterator
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i = m_queue.begin();
i != m_queue.end(); ++i) {
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QueuedMinimapUpdate *q = *i;
delete q;
}
}
bool MinimapUpdateQueue::addBlock(v3s16 pos, MinimapMapblock *data)
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{
DSTACK(__FUNCTION_NAME);
JMutexAutoLock lock(m_mutex);
/*
Find if block is already in queue.
If it is, update the data and quit.
*/
for (std::list<QueuedMinimapUpdate*>::iterator
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i = m_queue.begin();
i != m_queue.end(); ++i) {
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QueuedMinimapUpdate *q = *i;
if (q->pos == pos) {
delete q->data;
q->data = data;
return false;
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}
}
/*
Add the block
*/
QueuedMinimapUpdate *q = new QueuedMinimapUpdate;
q->pos = pos;
q->data = data;
m_queue.push_back(q);
return true;
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}
QueuedMinimapUpdate * MinimapUpdateQueue::pop()
{
JMutexAutoLock lock(m_mutex);
for (std::list<QueuedMinimapUpdate*>::iterator
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i = m_queue.begin();
i != m_queue.end(); i++) {
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QueuedMinimapUpdate *q = *i;
m_queue.erase(i);
return q;
}
return NULL;
}
/*
Minimap update thread
*/
void MinimapUpdateThread::enqueue_Block(v3s16 pos, MinimapMapblock *data)
{
m_queue.addBlock(pos, data);
deferUpdate();
}
void MinimapUpdateThread::doUpdate()
{
while (m_queue.size()) {
QueuedMinimapUpdate *q = m_queue.pop();
std::map<v3s16, MinimapMapblock *>::iterator it;
it = m_blocks_cache.find(q->pos);
if (q->data) {
m_blocks_cache[q->pos] = q->data;
} else if (it != m_blocks_cache.end()) {
delete it->second;
m_blocks_cache.erase(it);
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}
}
if (data->map_invalidated) {
if (data->mode != MINIMAP_MODE_OFF) {
getMap(data->pos, data->map_size, data->scan_height, data->radar);
data->map_invalidated = false;
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}
}
}
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MinimapUpdateThread::~MinimapUpdateThread()
{
for (std::map<v3s16, MinimapMapblock *>::iterator
it = m_blocks_cache.begin();
it != m_blocks_cache.end(); it++) {
delete it->second;
}
}
MinimapPixel *MinimapUpdateThread::getMinimapPixel(v3s16 pos, s16 height, s16 &pixel_height)
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{
pixel_height = height - MAP_BLOCKSIZE;
v3s16 blockpos_max, blockpos_min, relpos;
getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y - height / 2, pos.Z), blockpos_min, relpos);
getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y + height / 2, pos.Z), blockpos_max, relpos);
std::map<v3s16, MinimapMapblock *>::iterator it;
for (s16 i = blockpos_max.Y; i > blockpos_min.Y - 1; i--) {
it = m_blocks_cache.find(v3s16(blockpos_max.X, i, blockpos_max.Z));
if (it != m_blocks_cache.end()) {
MinimapPixel *pixel = &it->second->data[relpos.X + relpos.Z * MAP_BLOCKSIZE];
if (pixel->id != CONTENT_AIR) {
pixel_height += pixel->height;
return pixel;
}
}
pixel_height -= MAP_BLOCKSIZE;
}
return NULL;
}
s16 MinimapUpdateThread::getAirCount(v3s16 pos, s16 height)
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{
s16 air_count = 0;
v3s16 blockpos_max, blockpos_min, relpos;
getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y - height / 2, pos.Z), blockpos_min, relpos);
getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y + height / 2, pos.Z), blockpos_max, relpos);
std::map<v3s16, MinimapMapblock *>::iterator it;
for (s16 i = blockpos_max.Y; i > blockpos_min.Y - 1; i--) {
it = m_blocks_cache.find(v3s16(blockpos_max.X, i, blockpos_max.Z));
if (it != m_blocks_cache.end()) {
MinimapPixel *pixel = &it->second->data[relpos.X + relpos.Z * MAP_BLOCKSIZE];
air_count += pixel->air_count;
}
}
return air_count;
}
void MinimapUpdateThread::getMap(v3s16 pos, s16 size, s16 height, bool radar)
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{
v3s16 p = v3s16 (pos.X - size / 2, pos.Y, pos.Z - size / 2);
for (s16 x = 0; x < size; x++) {
for (s16 z = 0; z < size; z++){
u16 id = CONTENT_AIR;
MinimapPixel* minimap_pixel = &data->minimap_scan[x + z * size];
if (!radar) {
s16 pixel_height = 0;
MinimapPixel* cached_pixel =
getMinimapPixel(v3s16(p.X + x, p.Y, p.Z + z), height, pixel_height);
if (cached_pixel) {
id = cached_pixel->id;
minimap_pixel->height = pixel_height;
}
} else {
minimap_pixel->air_count = getAirCount (v3s16(p.X + x, p.Y, p.Z + z), height);
}
minimap_pixel->id = id;
}
}
}
Mapper::Mapper(IrrlichtDevice *device, Client *client)
{
this->device = device;
this->client = client;
this->driver = device->getVideoDriver();
this->tsrc = client->getTextureSource();
this->player = client->getEnv().getLocalPlayer();
this->shdrsrc = client->getShaderSource();
m_enable_shaders = g_settings->getBool("enable_shaders");
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m_enable_shaders = g_settings->getBool("enable_shaders");
if (g_settings->getBool("minimap_double_scan_height")) {
m_surface_mode_scan_height = 256;
} else {
m_surface_mode_scan_height = 128;
}
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data = new MinimapData;
data->mode = MINIMAP_MODE_OFF;
data->radar = false;
data->map_invalidated = true;
data->heightmap_image = NULL;
data->minimap_image = NULL;
data->texture = NULL;
data->minimap_shape_round = g_settings->getBool("minimap_shape_round");
std::string fname1 = "minimap_mask_round.png";
std::string fname2 = "minimap_overlay_round.png";
data->minimap_mask_round = driver->createImage (tsrc->getTexture(fname1),
core::position2d<s32>(0,0), core::dimension2d<u32>(512,512));
data->minimap_overlay_round = tsrc->getTexture(fname2);
fname1 = "minimap_mask_square.png";
fname2 = "minimap_overlay_square.png";
data->minimap_mask_square = driver->createImage (tsrc->getTexture(fname1),
core::position2d<s32>(0,0), core::dimension2d<u32>(512,512));
data->minimap_overlay_square = tsrc->getTexture(fname2);
data->player_marker = tsrc->getTexture("player_marker.png");
m_meshbuffer = getMinimapMeshBuffer();
m_minimap_update_thread = new MinimapUpdateThread(device, client);
m_minimap_update_thread->data = data;
m_minimap_update_thread->Start();
}
Mapper::~Mapper()
{
m_minimap_update_thread->Stop();
m_minimap_update_thread->Wait();
m_meshbuffer->drop();
data->minimap_mask_round->drop();
data->minimap_mask_square->drop();
driver->removeTexture(data->texture);
driver->removeTexture(data->heightmap_texture);
driver->removeTexture(data->minimap_overlay_round);
driver->removeTexture(data->minimap_overlay_square);
delete data;
delete m_minimap_update_thread;
}
void Mapper::addBlock (v3s16 pos, MinimapMapblock *data)
{
m_minimap_update_thread->enqueue_Block(pos, data);
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}
MinimapMode Mapper::getMinimapMode()
{
return data->mode;
}
void Mapper::toggleMinimapShape()
{
data->minimap_shape_round = !data->minimap_shape_round;
g_settings->setBool(("minimap_shape_round"), data->minimap_shape_round);
}
void Mapper::setMinimapMode(MinimapMode mode)
{
static const u16 modeDefs[7 * 3] = {
0, 0, 0,
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0, m_surface_mode_scan_height, 256,
0, m_surface_mode_scan_height, 128,
0, m_surface_mode_scan_height, 64,
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1, 32, 128,
1, 32, 64,
1, 32, 32};
JMutexAutoLock lock(m_mutex);
data->radar = (bool)modeDefs[(int)mode * 3];
data->scan_height = modeDefs[(int)mode * 3 + 1];
data->map_size = modeDefs[(int)mode * 3 + 2];
data->mode = mode;
m_minimap_update_thread->deferUpdate();
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}
void Mapper::setPos(v3s16 pos)
{
JMutexAutoLock lock(m_mutex);
if (pos != data->old_pos) {
data->old_pos = data->pos;
data->pos = pos;
m_minimap_update_thread->deferUpdate();
}
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}
video::ITexture *Mapper::getMinimapTexture()
{
// update minimap textures when new scan is ready
if (!data->map_invalidated) {
// create minimap and heightmap image
core::dimension2d<u32> dim(data->map_size,data->map_size);
video::IImage *map_image = driver->createImage(video::ECF_A8R8G8B8, dim);
video::IImage *heightmap_image = driver->createImage(video::ECF_A8R8G8B8, dim);
video::IImage *minimap_image = driver->createImage(video::ECF_A8R8G8B8,
core::dimension2d<u32>(512, 512));
video::SColor c;
if (!data->radar) {
// surface mode
for (s16 x = 0; x < data->map_size; x++) {
for (s16 z = 0; z < data->map_size; z++) {
MinimapPixel* minimap_pixel = &data->minimap_scan[x + z * data->map_size];
const ContentFeatures &f = client->getNodeDefManager()->get(minimap_pixel->id);
c = f.minimap_color;
c.setAlpha(240);
map_image->setPixel(x, data->map_size - z -1, c);
u32 h = minimap_pixel->height;
heightmap_image->setPixel(x,data->map_size -z -1,
video::SColor(255, h, h, h));
}
}
} else {
// radar mode
c = video::SColor (240, 0 , 0, 0);
for (s16 x = 0; x < data->map_size; x++) {
for (s16 z = 0; z < data->map_size; z++) {
MinimapPixel* minimap_pixel = &data->minimap_scan[x + z * data->map_size];
if (minimap_pixel->air_count > 0) {
c.setGreen(core::clamp(core::round32(32 + minimap_pixel->air_count * 8), 0, 255));
} else {
c.setGreen(0);
}
map_image->setPixel(x, data->map_size - z -1, c);
}
}
}
map_image->copyToScaling(minimap_image);
map_image->drop();
video::IImage *minimap_mask;
if (data->minimap_shape_round) {
minimap_mask = data->minimap_mask_round;
} else {
minimap_mask = data->minimap_mask_square;
}
for (s16 x = 0; x < 512; x++) {
for (s16 y = 0; y < 512; y++) {
video::SColor mask_col = minimap_mask->getPixel(x, y);
if (!mask_col.getAlpha()) {
minimap_image->setPixel(x, y, video::SColor(0,0,0,0));
}
}
}
if (data->texture) {
driver->removeTexture(data->texture);
}
if (data->heightmap_texture) {
driver->removeTexture(data->heightmap_texture);
}
data->texture = driver->addTexture("minimap__", minimap_image);
data->heightmap_texture = driver->addTexture("minimap_heightmap__", heightmap_image);
minimap_image->drop();
heightmap_image->drop();
data->map_invalidated = true;
}
return data->texture;
}
v3f Mapper::getYawVec()
{
if (data->minimap_shape_round) {
return v3f(cos(player->getYaw()* core::DEGTORAD),
sin(player->getYaw()* core::DEGTORAD), 1.0);
} else {
return v3f(1.0, 0.0, 1.0);
}
}
scene::SMeshBuffer *Mapper::getMinimapMeshBuffer()
{
scene::SMeshBuffer *buf = new scene::SMeshBuffer();
buf->Vertices.set_used(4);
buf->Indices .set_used(6);
video::SColor c(255, 255, 255, 255);
buf->Vertices[0] = video::S3DVertex(-1, -1, 0, 0, 0, 1, c, 0, 1);
buf->Vertices[1] = video::S3DVertex(-1, 1, 0, 0, 0, 1, c, 0, 0);
buf->Vertices[2] = video::S3DVertex( 1, 1, 0, 0, 0, 1, c, 1, 0);
buf->Vertices[3] = video::S3DVertex( 1, -1, 0, 0, 0, 1, c, 1, 1);
buf->Indices[0] = 0;
buf->Indices[1] = 1;
buf->Indices[2] = 2;
buf->Indices[3] = 2;
buf->Indices[4] = 3;
buf->Indices[5] = 0;
return buf;
}
void Mapper::drawMinimap()
{
v2u32 screensize = porting::getWindowSize();
u32 size = 0.25 * screensize.Y;
video::ITexture* minimap_texture = getMinimapTexture();
core::matrix4 matrix;
core::rect<s32> oldViewPort = driver->getViewPort();
driver->setViewPort(core::rect<s32>(screensize.X - size - 10, 10,
screensize.X - 10, size + 10));
core::matrix4 oldProjMat = driver->getTransform(video::ETS_PROJECTION);
driver->setTransform(video::ETS_PROJECTION, core::matrix4());
core::matrix4 oldViewMat = driver->getTransform(video::ETS_VIEW);
driver->setTransform(video::ETS_VIEW, core::matrix4());
matrix.makeIdentity();
if (minimap_texture) {
video::SMaterial& material = m_meshbuffer->getMaterial();
material.setFlag(video::EMF_TRILINEAR_FILTER, true);
material.Lighting = false;
material.TextureLayer[0].Texture = minimap_texture;
material.TextureLayer[1].Texture = data->heightmap_texture;
if (m_enable_shaders && !data->radar) {
u16 sid = shdrsrc->getShader("minimap_shader", 1, 1);
material.MaterialType = shdrsrc->getShaderInfo(sid).material;
} else {
material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
}
if (data->minimap_shape_round)
matrix.setRotationDegrees(core::vector3df(0, 0, 360 - player->getYaw()));
driver->setTransform(video::ETS_WORLD, matrix);
driver->setMaterial(material);
driver->drawMeshBuffer(m_meshbuffer);
video::ITexture *minimap_overlay;
if (data->minimap_shape_round) {
minimap_overlay = data->minimap_overlay_round;
} else {
minimap_overlay = data->minimap_overlay_square;
}
material.TextureLayer[0].Texture = minimap_overlay;
material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
driver->setMaterial(material);
driver->drawMeshBuffer(m_meshbuffer);
if (!data->minimap_shape_round) {
matrix.setRotationDegrees(core::vector3df(0, 0, player->getYaw()));
driver->setTransform(video::ETS_WORLD, matrix);
material.TextureLayer[0].Texture = data->player_marker;
driver->setMaterial(material);
driver->drawMeshBuffer(m_meshbuffer);
}
}
driver->setTransform(video::ETS_VIEW, oldViewMat);
driver->setTransform(video::ETS_PROJECTION, oldProjMat);
driver->setViewPort(oldViewPort);
}