index : minetest.git	gpcf lifo-fixes release
	modified minetest for gpcfs purposes	gpcf

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	Commit message (Collapse)	Author	Age
*	Some more Italian translations	Giuseppe Bilotta	2011-08-05
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*	changed on string in german translation to fit to gui	Constantin Wenger	2011-08-05
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*	update op PO files	Constantin Wenger	2011-08-05
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*	update to german translation	Constantin Wenger	2011-08-05
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*	added danish translation made by Frederik Helth	Constantin Wenger	2011-08-05
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*	german translation update, translated some of the new strings	Constantin Wenger	2011-07-30
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*	set some more text to gettext and updated po files	Constantin Wenger	2011-07-30
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*	changed some strings of the german translation to fit in the areas	Constantin Wenger	2011-07-30
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*	- compiling with translations works again	Nils Dagsson Moskopp	2011-07-30
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*	Merge remote-tracking branch 'origin/upstream'	Nils Dagsson Moskopp	2011-07-30
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| *	merged fix to decapitated trees; other bugs now exists	Perttu Ahola	2011-07-24
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* |	Italian translations	Giuseppe Bilotta	2011-07-24
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* |	Bring po update out of cmake again	Giuseppe Bilotta	2011-07-24
|/ | | | | | | | | | | | | |	This solves two issues at once: * CMake would delete po files during ‘make clean’ because it thought they were autogenerated and not just managed * the only gettext tools readily available in Windows are so old they don't support options like --package-name The change also moves minetest.pot down one level, so we don't need to special case ‘en’ anymore. The downside is of course that you need some sane POSIX shell to update the po files.
*	updatepo cmake rule	Giuseppe Bilotta	2011-07-22
| | | | | | | | | |	Get rid of the system-specific updatelocales.sh and introduce an updatepo cmake rule. po files are also updated before creating the mo files, and we now keep the .pot file (in the po/en directory). To stabilize the po file creation, file contents are sorted by source filename. Update po files in the process.
*	Static naming of po file	Giuseppe Bilotta	2011-07-22
| | | | | |	The po file should not be named c55 if we're in ∆. But since it is not exposed at installation time, we don't actually need its name to be based on the project name at all, so just call it minetest.po
*	Added missing .po fil.e	Cyriaque Skrapits	2011-07-21
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*	updated german po file for minetest-delta (prior it was for minetest)	Constantin Wenger	2011-07-20
| | |	set +x on bashscript
*	added gettext support	Constantin Wenger	2011-07-20
	german translation file and bashscript to update translations

generated by cgit v1.2.3 (git 2.39.1) at 2025-02-12 07:08:00 +0000

/*
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.
*/

#include "clouds.h"
#include "noise.h"
#include "constants.h"
#include "debug.h"
#include "main.h" // For g_profiler and g_settings
#include "profiler.h"
#include "settings.h"

Clouds::Clouds(
		scene::ISceneNode* parent,
		scene::ISceneManager* mgr,
		s32 id,
		u32 seed,
		s16 cloudheight
):
	scene::ISceneNode(parent, mgr, id),
	m_seed(seed),
	m_camera_pos(0,0),
	m_time(0)
{
	m_material.setFlag(video::EMF_LIGHTING, false);
	//m_material.setFlag(video::EMF_BACK_FACE_CULLING, false);
	m_material.setFlag(video::EMF_BACK_FACE_CULLING, true);
	m_material.setFlag(video::EMF_BILINEAR_FILTER, false);
	m_material.setFlag(video::EMF_FOG_ENABLE, true);
	m_material.setFlag(video::EMF_ANTI_ALIASING, true);
	//m_material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
	m_material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;

	m_cloud_y = BS * (cloudheight ? cloudheight :
				g_settings->getS16("cloud_height"));

	m_box = core::aabbox3d<f32>(-BS*1000000,m_cloud_y-BS,-BS*1000000,
			BS*1000000,m_cloud_y+BS,BS*1000000);

}

Clouds::~Clouds()
{
}

void Clouds::OnRegisterSceneNode()
{
	if(IsVisible)
	{
		SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
		//SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
	}

	ISceneNode::OnRegisterSceneNode();
}

#define MYROUND(x) (x > 0.0 ? (int)x : (int)x - 1)

void Clouds::render()
{
	video::IVideoDriver* driver = SceneManager->getVideoDriver();

	if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_TRANSPARENT)
	//if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_SOLID)
		return;

	ScopeProfiler sp(g_profiler, "Rendering of clouds, avg", SPT_AVG);
	
	bool enable_3d = g_settings->getBool("enable_3d_clouds");
	int num_faces_to_draw = enable_3d ? 6 : 1;
	
	m_material.setFlag(video::EMF_BACK_FACE_CULLING, enable_3d);

	driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
	driver->setMaterial(m_material);
	
	/*
		Clouds move from X+ towards X-
	*/

	const s16 cloud_radius_i = 12;
	const float cloud_size = BS*64;
	const v2f cloud_speed(0, -BS*2);
	
	const float cloud_full_radius = cloud_size * cloud_radius_i;
	
	// Position of cloud noise origin in world coordinates
	v2f world_cloud_origin_pos_f = m_time*cloud_speed;
	// Position of cloud noise origin from the camera
	v2f cloud_origin_from_camera_f = world_cloud_origin_pos_f - m_camera_pos;
	// The center point of drawing in the noise
	v2f center_of_drawing_in_noise_f = -cloud_origin_from_camera_f;
	// The integer center point of drawing in the noise
	v2s16 center_of_drawing_in_noise_i(
		MYROUND(center_of_drawing_in_noise_f.X / cloud_size),
		MYROUND(center_of_drawing_in_noise_f.Y / cloud_size)
	);
	// The world position of the integer center point of drawing in the noise
	v2f world_center_of_drawing_in_noise_f = v2f(
		center_of_drawing_in_noise_i.X * cloud_size,
		center_of_drawing_in_noise_i.Y * cloud_size
	) + world_cloud_origin_pos_f;

	/*video::SColor c_top(128,b*240,b*240,b*255);
	video::SColor c_side_1(128,b*230,b*230,b*255);
	video::SColor c_side_2(128,b*220,b*220,b*245);
	video::SColor c_bottom(128,b*205,b*205,b*230);*/
	video::SColorf c_top_f(m_color);
	video::SColorf c_side_1_f(m_color);
	video::SColorf c_side_2_f(m_color);
	video::SColorf c_bottom_f(m_color);
	c_side_1_f.r *= 0.95;
	c_side_1_f.g *= 0.95;
	c_side_1_f.b *= 0.95;
	c_side_2_f.r *= 0.90;
	c_side_2_f.g *= 0.90;
	c_side_2_f.b *= 0.90;
	c_bottom_f.r *= 0.80;
	c_bottom_f.g *= 0.80;
	c_bottom_f.b *= 0.80;
	c_top_f.a = 0.9;
	c_side_1_f.a = 0.9;
	c_side_2_f.a = 0.9;
	c_bottom_f.a = 0.9;
	video::SColor c_top = c_top_f.toSColor();
	video::SColor c_side_1 = c_side_1_f.toSColor();
	video::SColor c_side_2 = c_side_2_f.toSColor();
	video::SColor c_bottom = c_bottom_f.toSColor();

	// Get fog parameters for setting them back later
	video::SColor fog_color(0,0,0,0);
	video::E_FOG_TYPE fog_type = video::EFT_FOG_LINEAR;
	f32 fog_start = 0;
	f32 fog_end = 0;
	f32 fog_density = 0;
	bool fog_pixelfog = false;
	bool fog_rangefog = false;
	driver->getFog(fog_color, fog_type, fog_start, fog_end, fog_density,
			fog_pixelfog, fog_rangefog);
	
	// Set our own fog
	driver->setFog(fog_color, fog_type, cloud_full_radius * 0.5,
			cloud_full_radius*1.2, fog_density, fog_pixelfog, fog_rangefog);

	// Read noise

	bool *grid = new bool[cloud_radius_i*2*cloud_radius_i*2];

	for(s16 zi=-cloud_radius_i; zi<cloud_radius_i; zi++)
	for(s16 xi=-cloud_radius_i; xi<cloud_radius_i; xi++)
	{
		u32 i = (zi+cloud_radius_i)*cloud_radius_i*2 + xi+cloud_radius_i;

		v2s16 p_in_noise_i(
			xi+center_of_drawing_in_noise_i.X,
			zi+center_of_drawing_in_noise_i.Y
		);

#if 0
		double noise = noise2d_perlin_abs(
				(float)p_in_noise_i.X*cloud_size/BS/200,
				(float)p_in_noise_i.Y*cloud_size/BS/200,
				m_seed, 3, 0.4);
		grid[i] = (noise >= 0.80);
#endif
#if 1
		double noise = noise2d_perlin(
				(float)p_in_noise_i.X*cloud_size/BS/200,
				(float)p_in_noise_i.Y*cloud_size/BS/200,
				m_seed, 3, 0.5);
		grid[i] = (noise >= 0.4);
#endif
	}

#define GETINDEX(x, z, radius) (((z)+(radius))*(radius)*2 + (x)+(radius))
#define CONTAINS(x, z, radius) \
	((x) >= -(radius) && (x) < (radius) && (z) >= -(radius) && (z) < (radius))

	for(s16 zi0=-cloud_radius_i; zi0<cloud_radius_i; zi0++)
	for(s16 xi0=-cloud_radius_i; xi0<cloud_radius_i; xi0++)
	{
		s16 zi = zi0;
		s16 xi = xi0;
		// Draw from front to back (needed for transparency)
		/*if(zi <= 0)
			zi = -cloud_radius_i - zi;
		if(xi <= 0)
			xi = -cloud_radius_i - xi;*/
		// Draw from back to front
		if(zi >= 0)
			zi = cloud_radius_i - zi - 1;
		if(xi >= 0)
			xi = cloud_radius_i - xi - 1;

		u32 i = GETINDEX(xi, zi, cloud_radius_i);

		if(grid[i] == false)
			continue;

		v2f p0 = v2f(xi,zi)*cloud_size + world_center_of_drawing_in_noise_f;

		video::S3DVertex v[4] = {
			video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 1),
			video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 1),
			video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 0),
			video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 0)
		};

		/*if(zi <= 0 && xi <= 0){
			v[0].Color.setBlue(255);
			v[1].Color.setBlue(255);
			v[2].Color.setBlue(255);
			v[3].Color.setBlue(255);
		}*/

		f32 rx = cloud_size/2;
		f32 ry = 8*BS;
		f32 rz = cloud_size/2;

		for(int i=0; i<num_faces_to_draw; i++)
		{
			switch(i)
			{
			case 0:	// top
				for(int j=0;j<4;j++){
					v[j].Normal.set(0,1,0);
				}
				v[0].Pos.set(-rx, ry,-rz);
				v[1].Pos.set(-rx, ry, rz);
				v[2].Pos.set( rx, ry, rz);
				v[3].Pos.set( rx, ry,-rz);
				break;
			case 1: // back
				if(CONTAINS(xi, zi-1, cloud_radius_i)){
					u32 j = GETINDEX(xi, zi-1, cloud_radius_i);
					if(grid[j])
						continue;
				}
				for(int j=0;j<4;j++){
					v[j].Color = c_side_1;
					v[j].Normal.set(0,0,-1);
				}
				v[0].Pos.set(-rx, ry,-rz);
				v[1].Pos.set( rx, ry,-rz);
				v[2].Pos.set( rx,-ry,-rz);
				v[3].Pos.set(-rx,-ry,-rz);
				break;
			case 2: //right
				if(CONTAINS(xi+1, zi, cloud_radius_i)){
					u32 j = GETINDEX(xi+1, zi, cloud_radius_i);
					if(grid[j])
						continue;
				}
				for(int j=0;j<4;j++){
					v[j].Color = c_side_2;
					v[j].Normal.set(1,0,0);
				}
				v[0].Pos.set( rx, ry,-rz);
				v[1].Pos.set( rx, ry, rz);
				v[2].Pos.set( rx,-ry, rz);
				v[3].Pos.set( rx,-ry,-rz);
				break;
			case 3: // front
				if(CONTAINS(xi, zi+1, cloud_radius_i)){
					u32 j = GETINDEX(xi, zi+1, cloud_radius_i);
					if(grid[j])
						continue;
				}
				for(int j=0;j<4;j++){
					v[j].Color = c_side_1;
					v[j].Normal.set(0,0,-1);
				}
				v[0].Pos.set( rx, ry, rz);
				v[1].Pos.set(-rx, ry, rz);
				v[2].Pos.set(-rx,-ry, rz);
				v[3].Pos.set( rx,-ry, rz);
				break;
			case 4: // left
				if(CONTAINS(xi-1, zi, cloud_radius_i)){
					u32 j = GETINDEX(xi-1, zi, cloud_radius_i);
					if(grid[j])
						continue;
				}
				for(int j=0;j<4;j++){
					v[j].Color = c_side_2;
					v[j].Normal.set(-1,0,0);
				}
				v[0].Pos.set(-rx, ry, rz);
				v[1].Pos.set(-rx, ry,-rz);
				v[2].Pos.set(-rx,-ry,-rz);
				v[3].Pos.set(-rx,-ry, rz);
				break;
			case 5: // bottom
				for(int j=0;j<4;j++){
					v[j].Color = c_bottom;
					v[j].Normal.set(0,-1,0);
				}
				v[0].Pos.set( rx,-ry, rz);
				v[1].Pos.set(-rx,-ry, rz);
				v[2].Pos.set(-rx,-ry,-rz);
				v[3].Pos.set( rx,-ry,-rz);
				break;
			}

			v3f pos(p0.X, m_cloud_y, p0.Y);

			for(u16 i=0; i<4; i++)
				v[i].Pos += pos;
			u16 indices[] = {0,1,2,2,3,0};
			driver->drawVertexPrimitiveList(v, 4, indices, 2,
					video::EVT_STANDARD, scene::EPT_TRIANGLES, video::EIT_16BIT);
		}
	}

	delete[] grid;
	
	// Restore fog settings
	driver->setFog(fog_color, fog_type, fog_start, fog_end, fog_density,
			fog_pixelfog, fog_rangefog);
}

void Clouds::step(float dtime)
{
	m_time += dtime;
}

void Clouds::update(v2f camera_p, video::SColorf color)
{
	m_camera_pos = camera_p;
	m_color = color;
	//m_brightness = brightness;
	//dstream<<"m_brightness="<<m_brightness<<std::endl;
}