Add particles

9 files changed, 370 insertions, 1 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 5e1bfd65d..24f682f3f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -262,6 +262,7 @@ set(minetest_SRCS
 	keycode.cpp
 	camera.cpp
 	clouds.cpp
+	particles.cpp
 	clientobject.cpp
 	chat.cpp
 	guiMainMenu.cpp
diff --git a/src/client.h b/src/client.h
index 7052e840a..43fac9c9a 100644
--- a/src/client.h
+++ b/src/client.h
@@ -34,6 +34,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "filecache.h"
 #include "localplayer.h"
 #include "server.h"
+#include "particles.h"
 #include "util/pointedthing.h"
 
 struct MeshMakeData;
diff --git a/src/defaultsettings.cpp b/src/defaultsettings.cpp
index 9ada214ae..ca5f33609 100644
--- a/src/defaultsettings.cpp
+++ b/src/defaultsettings.cpp
@@ -124,6 +124,7 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("preload_item_visuals", "true");
 	settings->setDefault("enable_shaders", "2");
 	settings->setDefault("repeat_rightclick_time", "0.25");
+	settings->setDefault("enable_particles", "true");
 
 	settings->setDefault("media_fetch_threads", "8");
 
diff --git a/src/game.cpp b/src/game.cpp
index bed99837d..488d18f7a 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -36,6 +36,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "guiChatConsole.h"
 #include "config.h"
 #include "clouds.h"
+#include "particles.h"
 #include "camera.h"
 #include "farmesh.h"
 #include "mapblock.h"
@@ -2399,6 +2400,13 @@ void the_game(
 				else
 				{
 					dig_time_complete = params.time;
+					if (g_settings->getBool("enable_particles"))
+					{
+						const ContentFeatures &features =
+							client.getNodeDefManager()->get(n);
+						addPunchingParticles
+							(gamedef, smgr, player, nodepos, features.tiles);
+					}
 				}
 
 				if(dig_time_complete >= 0.001)
@@ -2430,6 +2438,14 @@ void the_game(
 					MapNode wasnode = map.getNode(nodepos);
 					client.removeNode(nodepos);
 
+					if (g_settings->getBool("enable_particles"))
+					{
+						const ContentFeatures &features =
+							client.getNodeDefManager()->get(wasnode);
+						addDiggingParticles
+							(gamedef, smgr, player, nodepos, features.tiles);
+					}
+
 					dig_time = 0;
 					digging = false;
 
@@ -2698,6 +2714,12 @@ void the_game(
 			farmesh->update(v2f(player_position.X, player_position.Z),
 					brightness, farmesh_range);
 		}
+
+		/*
+			Update particles
+		*/
+
+		allparticles_step(dtime, client.getEnv());
 		
 		/*
 			Fog
diff --git a/src/guiMainMenu.cpp b/src/guiMainMenu.cpp
index d7c3f54ff..bac9052b9 100644
--- a/src/guiMainMenu.cpp
+++ b/src/guiMainMenu.cpp
@@ -104,6 +104,7 @@ enum
 	GUI_ID_TRILINEAR_CB,
 	GUI_ID_SHADERS_CB,
 	GUI_ID_PRELOAD_ITEM_VISUALS_CB,
+	GUI_ID_ENABLE_PARTICLES_CB,
 	GUI_ID_DAMAGE_CB,
 	GUI_ID_CREATIVE_CB,
 	GUI_ID_JOIN_GAME_BUTTON,
@@ -618,7 +619,7 @@ void GUIMainMenu::regenerateGui(v2u32 screensize)
 				       GUI_ID_TRILINEAR_CB, wgettext("Tri-Linear Filtering"));
 		}
 
-		// shader/on demand image loading settings
+		// shader/on demand image loading/particles settings
 		{
 			core::rect<s32> rect(0, 0, option_w+20, 30);
 			rect += m_topleft_client + v2s32(option_x+175*2, option_y);
@@ -633,6 +634,13 @@ void GUIMainMenu::regenerateGui(v2u32 screensize)
 					GUI_ID_PRELOAD_ITEM_VISUALS_CB, wgettext("Preload item visuals"));
 		}
 
+		{
+			core::rect<s32> rect(0, 0, option_w+20+20, 30);
+			rect += m_topleft_client + v2s32(option_x+175*2, option_y+20*2);
+			Environment->addCheckBox(m_data->enable_particles, rect, this,
+					GUI_ID_ENABLE_PARTICLES_CB, wgettext("Enable Particles"));
+		}
+
 		// Key change button
 		{
 			core::rect<s32> rect(0, 0, 120, 30);
@@ -850,6 +858,12 @@ void GUIMainMenu::readInput(MainMenuData *dst)
 	}
 
 	{
+		gui::IGUIElement *e = getElementFromId(GUI_ID_ENABLE_PARTICLES_CB);
+		if(e != NULL && e->getType() == gui::EGUIET_CHECK_BOX)
+			dst->enable_particles = ((gui::IGUICheckBox*)e)->isChecked();
+	}
+
+	{
 		gui::IGUIElement *e = getElementFromId(GUI_ID_WORLD_LISTBOX);
 		if(e != NULL && e->getType() == gui::EGUIET_LIST_BOX)
 			dst->selected_world = ((gui::IGUIListBox*)e)->getSelected();
diff --git a/src/guiMainMenu.h b/src/guiMainMenu.h
index 604202461..f87ad0fdb 100644
--- a/src/guiMainMenu.h
+++ b/src/guiMainMenu.h
@@ -47,6 +47,7 @@ struct MainMenuData
 	bool trilinear_filter;
 	int enable_shaders;
 	bool preload_item_visuals;
+	bool enable_particles;
 	// Server options
 	bool creative_mode;
 	bool enable_damage;
diff --git a/src/main.cpp b/src/main.cpp
index ede9f63b0..0af9d113c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1448,6 +1448,7 @@ int main(int argc, char *argv[])
 				menudata.trilinear_filter = g_settings->getBool("trilinear_filter");
 				menudata.enable_shaders = g_settings->getS32("enable_shaders");
 				menudata.preload_item_visuals = g_settings->getBool("preload_item_visuals");
+				menudata.enable_particles = g_settings->getBool("enable_particles");
 				driver->setTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS, menudata.mip_map);
 				menudata.creative_mode = g_settings->getBool("creative_mode");
 				menudata.enable_damage = g_settings->getBool("enable_damage");
@@ -1570,6 +1571,7 @@ int main(int argc, char *argv[])
 
 				g_settings->setS32("enable_shaders", menudata.enable_shaders);
 				g_settings->set("preload_item_visuals", itos(menudata.preload_item_visuals));
+				g_settings->set("enable_particles", itos(menudata.enable_particles));
 
 				g_settings->set("creative_mode", itos(menudata.creative_mode));
 				g_settings->set("enable_damage", itos(menudata.enable_damage));
diff --git a/src/particles.cpp b/src/particles.cpp
new file mode 100644
index 000000000..d49e33322
--- /dev/null
+++ b/src/particles.cpp
@@ -0,0 +1,229 @@
+/*
+Minetest-c55
+Copyright (C) 2012 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 "particles.h"
+#include "constants.h"
+#include "debug.h"
+#include "main.h" // For g_profiler and g_settings
+#include "settings.h"
+#include "tile.h"
+#include "gamedef.h"
+#include "collision.h"
+#include <stdlib.h>
+#include "util/numeric.h"
+#include "light.h"
+#include "environment.h"
+#include "clientmap.h"
+#include "mapnode.h"
+
+Particle::Particle(
+	IGameDef *gamedef,
+	scene::ISceneManager* smgr,
+	LocalPlayer *player,
+	s32 id,
+	v3f pos,
+	v3f velocity,
+	v3f acceleration,
+	float expirationtime,
+	float size,
+	AtlasPointer ap
+):
+	scene::ISceneNode(smgr->getRootSceneNode(), smgr, id)
+{
+	// Misc
+	m_gamedef = gamedef;
+
+	// Texture
+	m_material.setFlag(video::EMF_LIGHTING, false);
+	m_material.setFlag(video::EMF_BACK_FACE_CULLING, false);
+	m_material.setFlag(video::EMF_BILINEAR_FILTER, false);
+	m_material.setFlag(video::EMF_FOG_ENABLE, true);
+	m_material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+	m_material.setTexture(0, ap.atlas);
+	m_ap = ap;
+	m_light = 0;
+
+
+	// Particle related
+	m_pos = pos;
+	m_velocity = velocity;
+	m_acceleration = acceleration;
+	m_expiration = expirationtime;
+	m_time = 0;
+	m_player = player;
+	m_size = size;
+
+	// Irrlicht stuff (TODO)
+	m_collisionbox = core::aabbox3d<f32>(-size/2,-size/2,-size/2,size/2,size/2,size/2);
+	this->setAutomaticCulling(scene::EAC_OFF);
+}
+
+Particle::~Particle()
+{
+}
+
+void Particle::OnRegisterSceneNode()
+{
+	if (IsVisible)
+	{
+		SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
+		SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
+	}
+
+	ISceneNode::OnRegisterSceneNode();
+}
+
+void Particle::render()
+{
+	// TODO: Render particles in front of water and the selectionbox
+
+	video::IVideoDriver* driver = SceneManager->getVideoDriver();
+	driver->setMaterial(m_material);
+	driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
+	video::SColor c(255, m_light, m_light, m_light);
+
+	video::S3DVertex vertices[4] =
+	{
+		video::S3DVertex(-m_size/2,-m_size/2,0, 0,0,0, c, m_ap.x0(), m_ap.y1()),
+		video::S3DVertex(m_size/2,-m_size/2,0, 0,0,0, c, m_ap.x1(), m_ap.y1()),
+		video::S3DVertex(m_size/2,m_size/2,0, 0,0,0, c, m_ap.x1(), m_ap.y0()),
+		video::S3DVertex(-m_size/2,m_size/2,0, 0,0,0, c ,m_ap.x0(), m_ap.y0()),
+	};
+
+	for(u16 i=0; i<4; i++)
+	{
+		vertices[i].Pos.rotateYZBy(m_player->getPitch());
+		vertices[i].Pos.rotateXZBy(m_player->getYaw());
+		m_box.addInternalPoint(vertices[i].Pos);
+		vertices[i].Pos += m_pos*BS;
+	}
+
+	u16 indices[] = {0,1,2, 2,3,0};
+	driver->drawVertexPrimitiveList(vertices, 4, indices, 2,
+			video::EVT_STANDARD, scene::EPT_TRIANGLES, video::EIT_16BIT);
+}
+
+void Particle::step(float dtime, ClientEnvironment &env)
+{
+	core::aabbox3d<f32> box = m_collisionbox;
+	v3f p_pos = m_pos*BS;
+	v3f p_velocity = m_velocity*BS;
+	v3f p_acceleration = m_acceleration*BS;
+	collisionMoveSimple(&env.getClientMap(), m_gamedef,
+		BS*0.5, box,
+		0, dtime,
+		p_pos, p_velocity, p_acceleration);
+	m_pos = p_pos/BS;
+	m_velocity = p_velocity/BS;
+	m_acceleration = p_acceleration/BS;
+	m_time += dtime;
+
+	// Update lighting
+	u8 light = 0;
+	try{
+		v3s16 p = v3s16(
+			floor(m_pos.X+0.5),
+			floor(m_pos.Y+0.5),
+			floor(m_pos.Z+0.5)
+		);
+		MapNode n = env.getClientMap().getNode(p);
+		light = n.getLightBlend(env.getDayNightRatio(), m_gamedef->ndef());
+	}
+	catch(InvalidPositionException &e){
+		light = blend_light(env.getDayNightRatio(), LIGHT_SUN, 0);
+	}
+	m_light = decode_light(light);
+}
+
+std::vector<Particle*> all_particles;
+
+void allparticles_step (float dtime, ClientEnvironment &env)
+{
+	for(std::vector<Particle*>::iterator i = all_particles.begin(); i != all_particles.end();)
+	{
+		if ((*i)->get_expired())
+		{
+			(*i)->remove();
+			delete *i;
+			all_particles.erase(i);
+		}
+		else
+		{
+			(*i)->step(dtime, env);
+			i++;
+		}
+	}
+}
+
+void addDiggingParticles(IGameDef* gamedef, scene::ISceneManager* smgr, LocalPlayer *player, v3s16 pos, const TileSpec tiles[])
+{
+	for (u16 j = 0; j < 32; j++) // set the amount of particles here
+	{
+		addNodeParticle(gamedef, smgr, player, pos, tiles);
+	}
+}
+
+void addPunchingParticles(IGameDef* gamedef, scene::ISceneManager* smgr, LocalPlayer *player, v3s16 pos, const TileSpec tiles[])
+{
+	addNodeParticle(gamedef, smgr, player, pos, tiles);
+}
+
+// add a particle of a node
+// used by digging and punching particles
+void addNodeParticle(IGameDef* gamedef, scene::ISceneManager* smgr, LocalPlayer *player, v3s16 pos, const TileSpec tiles[])
+{
+	// Texture
+	u8 texid = myrand_range(0,5);
+	AtlasPointer ap = tiles[texid].texture;
+	float size = rand()%64/512.;
+	float visual_size = BS*size;
+	float texsize = size*2;
+
+	float x1 = ap.x1();
+	float y1 = ap.y1();
+
+	ap.size.X = (ap.x1() - ap.x0()) * texsize;
+	ap.size.Y = (ap.x1() - ap.x0()) * texsize;
+
+	ap.pos.X = ap.x0() + (x1 - ap.x0()) * ((rand()%64)/64.-texsize);
+	ap.pos.Y = ap.y0() + (y1 - ap.y0()) * ((rand()%64)/64.-texsize);
+
+	// Physics
+	v3f velocity((rand()%100/50.-1)/1.5, rand()%100/35., (rand()%100/50.-1)/1.5);
+	v3f acceleration(0,-9,0);
+	v3f particlepos = v3f(
+		(f32)pos.X+rand()%100/200.-0.25,
+		(f32)pos.Y+rand()%100/200.-0.25,
+		(f32)pos.Z+rand()%100/200.-0.25
+	);
+
+	Particle *particle = new Particle(
+		gamedef,
+		smgr,
+		player,
+		0,
+		particlepos,
+		velocity,
+		acceleration,
+		rand()%100/100., // expiration time
+		visual_size,
+		ap);
+
+	all_particles.push_back(particle);
+}
diff --git a/src/particles.h b/src/particles.h
new file mode 100644
index 000000000..3ed9dfdc8
--- /dev/null
+++ b/src/particles.h
@@ -0,0 +1,98 @@
+/*
+Minetest-c55
+Copyright (C) 2012 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 PARTICLES_HEADER
+#define PARTICLES_HEADER
+
+#define DIGGING_PARTICLES_AMOUNT 10
+
+#include <iostream>
+#include "irrlichttypes_extrabloated.h"
+#include "tile.h"
+#include "localplayer.h"
+#include "environment.h"
+
+class Particle : public scene::ISceneNode
+{
+	public:
+	Particle(
+		IGameDef* gamedef,
+		scene::ISceneManager* mgr,
+		LocalPlayer *player,
+		s32 id,
+		v3f pos,
+		v3f velocity,
+		v3f acceleration,
+		float expirationtime,
+		float size,
+		AtlasPointer texture
+	);
+	~Particle();
+
+	virtual const core::aabbox3d<f32>& getBoundingBox() const
+	{
+		return m_box;
+	}
+
+	virtual u32 getMaterialCount() const
+	{
+		return 1;
+	}
+
+	virtual video::SMaterial& getMaterial(u32 i)
+	{
+		return m_material;
+	}
+
+	virtual void OnRegisterSceneNode();
+	virtual void render();
+
+	void step(float dtime, ClientEnvironment &env);
+
+	bool get_expired ()
+	{ return m_expiration < m_time; }
+
+private:
+	float m_time;
+	float m_expiration;
+
+	IGameDef *m_gamedef;
+	core::aabbox3d<f32> m_box;
+	core::aabbox3d<f32> m_collisionbox;
+	video::SMaterial m_material;
+	v3f m_pos;
+	v3f m_velocity;
+	v3f m_acceleration;
+	float tex_x0;
+	float tex_x1;
+	float tex_y0;
+	float tex_y1;
+	LocalPlayer *m_player;
+	float m_size;
+	AtlasPointer m_ap;
+	u8 m_light;
+};
+
+void allparticles_step (float dtime, ClientEnvironment &env);
+
+void addDiggingParticles(IGameDef* gamedef, scene::ISceneManager* smgr, LocalPlayer *player, v3s16 pos, const TileSpec tiles[]);
+void addPunchingParticles(IGameDef* gamedef, scene::ISceneManager* smgr, LocalPlayer *player, v3s16 pos, const TileSpec tiles[]);
+void addNodeParticle(IGameDef* gamedef, scene::ISceneManager* smgr, LocalPlayer *player, v3s16 pos, const TileSpec tiles[]);
+
+#endif