Added Plebs fireworks mod

mods/firework/README.txt

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+Minetest Game mod
+=======================
+See license.txt for license information.
+
+Authors of source code
+----------------------
+Plebs
+
+Authors of media (textures)
+---------------------------
+
+Plebs
+
+
+

mods/firework/depends.txt

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+default

mods/firework/init.lua

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+-- firework mod by Plebs, oct 2017
+
+local textures={"firework_white.png","firework_green.png","firework_pink.png","firework_cyan.png","firework_red.png","firework_blue.png","firework_yellow.png","firework_white.png"}
+local originsphere={}					-- calc vectors only once and store in array to save time
+
+local time_countdown=3.0;			-- particle trajectories are calculated just-in-time
+local speed_motor=6.4;				-- so all these variables can be adjusted for diffrent needs
+local time_flight=3.2;				-- the values were adjusted to look like real fireworks on low end hardware
+local speed_explosion=3.6;
+local time_explosion=0.6;
+local acc_gravity=-0.8;
+local acc_airdrag=-2.4;
+
+local function generate_sphere(rings,sectors)
+	local bla={1,4,8,12,8,4,1}		-- bc i'm too stupid to make a dynamic sphere gen
+	local i=1;local ring;local sector;local s_gap
+	local r_gap=(1/(rings))			-- spacings
+	
+	for ring=0,rings do
+		for sector=0,bla[ring+1]-1 do			
+			s_gap=(1/(bla[ring+1]))			
+			originsphere[i]={}
+			originsphere[i].x=math.cos(2*math.pi*sector*s_gap) * math.sin(math.pi*ring*r_gap);
+			originsphere[i].y=math.sin(-(math.pi/2) + math.pi*ring*r_gap);
+			originsphere[i].z=math.sin(2*math.pi*sector*s_gap) * math.sin(math.pi*ring*r_gap);
+			i=i+1
+		end
+	end	
+end
+
+
+generate_sphere(6,12)	-- precalculate sphere only once on start (param: rings, sectors)
+minetest.log("firework mod with " .. #textures .." textures loaded. " .. #originsphere .." vectors have been precalculated successfully")
+
+
+minetest.register_craftitem("firework:rocket",{		-- firework code and images by Plebs, Oct 2017
+	description = "Firework Rocket",														-- uses only built-in sounds
+	inventory_image = "firework_rocket.png",
+		
+	on_use = function(itemstack, player, pointed_thing)	
+		local mypos = minetest.get_pointed_thing_position(pointed_thing,true)	-- get placing position			
+		if mypos == nil then return end							-- if no solid ground clicked, return
+		mypos.vx=0;mypos.vy=0;mypos.vz=0;						-- needs to be set, could be called in callback, before its generated due lag
+		local sphere={};
+		local i;
+		local randomtexture=math.random(0,3)											-- create a random texture for this firework
+		local acc_drift_x=(math.random()-0.5)										-- random flight drift
+		local acc_drift_z=(math.random()-0.5)
+		for i=1,#originsphere do sphere[i]={};sphere[i].x=originsphere[i].x;sphere[i].y=originsphere[i].y;sphere[i].z=originsphere[i].z;sphere[i].vx=0;sphere[i].vy=0;sphere[i].vz=0;end		-- make a copy of precalculated sphere
+		mypos.y=mypos.y-0.25;																	-- rocket offset, so halfsized texture touches the ground
+
+		minetest.add_particle({																			-- place rocket
+			pos={x=mypos.x,y=mypos.y,z=mypos.z},
+			velocity={x=0,y=0,z=0},
+			acceleration={x=0,y=0,z=0},
+			expirationtime=time_countdown,size=5,collisiondetection=false,vertical=false,glow=LIGHT_MAX*0.8,
+			texture="firework_rocket.png",minetest.sound_play("default_place_node",{pos=mypos,max_hear_distance=8})})
+
+		minetest.after(time_countdown,function()			
+			minetest.add_particle({																		-- smoke
+				pos={x=mypos.x,y=mypos.y-0.15,z=mypos.z},
+				velocity={x=0,y=-0.04,z=0},
+				acceleration={x=0,y=0,z=0},
+				expirationtime=2,size=8,collisiondetection=false,vertical=false,glow=2,
+				texture="default_item_smoke.png",minetest.sound_play("default_cool_lava",{pos=mypos,max_hear_distance=8,})})				
+
+			minetest.add_particle({																		-- flight rocket
+				pos={x=mypos.x,y=mypos.y,z=mypos.z},
+				velocity={x=0,y=speed_motor,z=0},
+				acceleration={x=acc_drift_x,y=acc_airdrag,z=acc_drift_z},
+				expirationtime=time_flight,size=5.0,collisiondetection=false,vertical=false,glow=LIGHT_MAX*0.8,
+				texture="firework_rocket.png",minetest.sound_play("default_place_node",{pos=mypos,max_hear_distance=8})})
+			mypos.x=mypos.x+ (0.5*acc_drift_x*time_flight*time_flight);		--update particles to predicted new postions
+			mypos.y=mypos.y+((0.5*acc_airdrag*time_flight*time_flight)+(speed_motor*time_flight));
+			mypos.z=mypos.z+ (0.5*acc_drift_z*time_flight*time_flight);
+			mypos.vx=(acc_drift_x*time_flight)*0.5
+			mypos.vy=((acc_airdrag*time_flight)+speed_motor)*0.25
+			mypos.vz=(acc_drift_z*time_flight)*0.5
+			end)
+
+		minetest.after(time_countdown+time_flight,function()					-- show inital explosion			
+			for i=1,#sphere do
+				sphere[i].vx=(sphere[i].x*speed_explosion);
+				sphere[i].vy=(sphere[i].y*speed_explosion);
+				sphere[i].vz=(sphere[i].z*speed_explosion);
+
+				minetest.add_particle({
+					pos={x=mypos.x,y=mypos.y,z=mypos.z},
+					velocity={x=mypos.vx,y=mypos.vy,z=mypos.vz},
+					acceleration={x=sphere[i].vx,y=sphere[i].vy,z=sphere[i].vz},
+					expirationtime=time_explosion,size=0.5,collisiondetection=false,vertical=false,glow=LIGHT_MAX*0.8,
+					texture="firework_yellow.png"})						
+				sphere[i].x=mypos.x+(0.5*sphere[i].vx*time_explosion*time_explosion)+(mypos.vx*time_explosion);		--update particles to predicted new postions
+				sphere[i].y=mypos.y+(0.5*sphere[i].vy*time_explosion*time_explosion)+(mypos.vy*time_explosion);
+				sphere[i].z=mypos.z+(0.5*sphere[i].vz*time_explosion*time_explosion)+(mypos.vz*time_explosion);						
+				sphere[i].vx=((sphere[i].vx*(time_explosion))+mypos.vx)*0.125;
+				sphere[i].vy=((sphere[i].vy*(time_explosion))+mypos.vy)*0.125;
+				sphere[i].vz=((sphere[i].vz*(time_explosion))+mypos.vz)*0.125;
+			end;
+		end)
+
+		minetest.after(time_countdown+time_flight+time_explosion,function()					-- show spectacular particles
+			for i=1,#sphere do
+				minetest.add_particle({
+					pos={x=sphere[i].x,y=sphere[i].y,z=sphere[i].z},
+					velocity={x=sphere[i].vx,y=sphere[i].vy,z=sphere[i].vz},
+					acceleration={x=0,y=acc_gravity,z=0},
+					expirationtime=(math.random()*0.5)+1.4,size=(math.random()*0.4)+0.6,collisiondetection=false,vertical=false,glow=LIGHT_MAX,
+					texture=textures[math.random(1,2)+(randomtexture*2)]})
+			end;
+		end)
+	
+	
+	minetest.after(time_countdown+time_flight+0.1,function()	-- the sounds are detached, with slight delay for natural feeling
+		minetest.sound_play("default_dug_node",{pos={x=mypos.x,y=mypos.y,z=mypos.z},max_hear_distance=12})end)
+
+	minetest.after(time_countdown+time_flight+time_explosion+0.1,function()
+		minetest.sound_play("default_dug_node",{pos={x=mypos.x,y=mypos.y,z=mypos.z},max_hear_distance=12})end)
+
+	minetest.after(time_countdown+time_flight+time_explosion+0.2,function()
+		minetest.sound_play("default_dug_node",{pos={x=mypos.x,y=mypos.y,z=mypos.z},max_hear_distance=12})end)
+
+
+	itemstack:take_item()
+	return itemstack
+	end
+})
+
+
+	-- fountain code and images by Plebs, Oct 2017
+
+
+minetest.register_craftitem("firework:fountain",{
+	description = "Firework Fountain",														-- uses only built-in sounds
+	inventory_image = "firework_fountain.png",
+		
+	on_use=function(itemstack,player,pointed_thing)	
+		local mypos=minetest.get_pointed_thing_position(pointed_thing,true)	-- get placing position			
+		if mypos==nil then return end							-- if no soild ground clicked, return
+		local fountain_textures={"heart.png","bubble.png","firework_star.png"}		
+
+		minetest.add_particle({																			-- place fountain
+			pos={x=mypos.x,y=mypos.y-0.25,z=mypos.z},
+			velocity={x=0,y=0,z=0},
+			acceleration={x=0,y=0,z=0},
+			expirationtime=16,size=5,collisiondetection=false,vertical=false,glow=LIGHT_MAX*0.8,
+			texture="firework_fountain.png",minetest.sound_play("default_place_node",{pos=mypos,max_hear_distance=8})})
+
+		minetest.after(3,function()
+			minetest.add_particlespawner({
+				minpos={x=mypos.x,y=mypos.y-0.14,z=mypos.z},maxpos={x=mypos.x,y=mypos.y,z=mypos.z},
+				minvel={x=-0.2,y=1.2,z=-0.2},maxvel={x= 0.2,y=2.0,z= 0.2},
+				minacc={x=0,y=-0.5,z=0},maxacc={x=0,y=-0.5,z=0},
+				amount=64,time=12,minexptime=4,maxexptime=6,minsize=0.5,maxsize=1.0,
+				minetest.sound_play("default_cool_lava",{pos=mypos,max_hear_distance=8}),
+				collisiondetection=false,vertical=false,glow=LIGHT_MAX,
+				texture=fountain_textures[math.random(1,#fountain_textures)]})
+		end)
+
+	itemstack:take_item()
+	return itemstack
+	end})
+
+
+
+
+
+--    craft receipes
+
+minetest.register_craft{
+	type="shapeless",
+	output="firework:fountain 25",
+	recipe={"dye:blue","dye:yellow","dye:red",
+					"default:paper","default:paper","default:paper",
+					"default:coal_lump","default:coal_lump","default:coal_lump"}}
+
+minetest.register_craft{
+	type="shapeless",
+	output="firework:rocket 25",
+	recipe={"dye:pink","dye:yellow","dye:cyan",
+					"default:paper","default:paper","default:paper",
+					"default:coal_lump","default:coal_lump","default:coal_lump"}}
+
+
+
+
+
+
+
+
+
+
+--  snow generator, by Plebs Oct 2017  ..  this is is early alpha for tests and special occasions only
+--  not for Players. there can be only one snowarea at a time. amount varies with globalstep settings
+
+local snow=nil;
+
+minetest.register_craftitem("firework:snow",{
+	description="Snow",inventory_image="firework_white.png",		
+	on_use=function(itemstack,player,pointed_thing)
+		snow=player:getpos()
+		minetest.after(60,function()snow=nil;end)			-- turn snow off after 60 seconds
+		itemstack:take_item()
+		return itemstack
+	end})
+
+minetest.register_globalstep(function(dtime)			-- snow in area
+		if snow==nil then return end									-- if no solid ground clicked, return
+		local x=math.random()-0.5;
+		local y=math.random();
+		local z=math.random()-0.5;
+		
+		for i=0,3 do	
+			minetest.add_particle({
+				pos={x=snow.x+((math.random()-0.5)*48),y=snow.y+y+14,z=snow.z+((math.random()-0.5)*48)},
+				velocity={x=x*2,y=-(1.0+y),z=z*2},
+				acceleration={x=-x*0.6,y=0,z=-z*0.6},
+				expirationtime=y+8,size=1,collisiondetection=false,vertical=false,glow=LIGHT_MAX,
+				texture="firework_white.png"})
+		end
+end)

mods/firework/license.txt

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+License of source code
+----------------------
+
+Copyright (C) 2017 Plebs
+
+Permission is hereby granted, free of charge, to the owners of Minetest
+Legends of Survial GameWorld known as ThomasMonroe and CalebDavis to use this Software
+and associated files for the limited time of November 1, 2017 to May 31, 2018.
+it does not permit any kind of distribution, copy, merge, publish, sublicensing and/or
+selling of the software or parts of it.
+
+
+The above copyright notice and this permission notice must not be removed from the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+
+Licenses of media (textures)
+----------------------------
+
+Copyright (C) 2017 Plebs