redesign the api to have player individual weather

.luacheckrc

@@ -21,7 +21,6 @@ read_globals = {
 
 globals = {
 	"weather",
-	"weather_mod"
 }
 
 exclude_files = {"weather/development/"}

weather/api.lua

@@ -1,4 +1,6 @@
-weather_mod.registered_downfalls = {}
+local storage = minetest.get_mod_storage()
+
+weather.registered_downfalls = {}
 
 local function check_modname_prefix(name)
 	if name:sub(1,1) == ":" then
@@ -66,10 +68,10 @@ local default_damage = {
   time = 100
 }
 
-function weather_mod.register_downfall(id,def)
+function weather.register_downfall(id,def)
 	local name = check_modname_prefix(id)
 	if name == "none" then error("\"none\" means none, thanks") end
-	if weather_mod.registered_downfalls[name]~=nil then error(name.." is already registered") end
+	if weather.registered_downfalls[name]~=nil then error(name.." is already registered") end
 	local ndef = table.copy(def)
 	--what the downfall looks like
 	if not ndef.texture then
@@ -78,26 +80,26 @@ function weather_mod.register_downfall(id,def)
 	set_defaults(ndef,default_downfall)
 	--when to delete the particles
 	if not ndef.exptime then
-		ndef.exptime = ndef.max_pos.y / (math.sqrt(ndef.falling_acceleration) + ndef.falling_speed)
+		ndef.exptime = ndef.max_pos.y / ndef.falling_speed
 	end
 	if ndef.damage_player then
     set_defaults(ndef.damage_player,default_damage)
 	end
 	--actually register the downfall
-	weather_mod.registered_downfalls[name]=ndef
+	weather.registered_downfalls[name]=ndef
 end
 
-function weather_mod.disable_downfall(id,disable)
+function weather.disable_downfall(id,disable)
   local state = disable
   if disable == nil then
     state = true
   end
-  weather_mod.registered_downfalls[id].disabled = state
+  weather.registered_downfalls[id].disabled = state
 end
 
+--[[
 if minetest.get_modpath("lightning") then
 	lightning.auto = false
-	--rawset(lightning,"auto",false)
 end
 
 function weather_mod.handle_lightning(current_weather)
@@ -110,10 +112,47 @@ function weather_mod.handle_lightning(current_weather)
     minetest.after(time, lightning.strike)
   end
 end
+]]
 
 local do_raycasts = minetest.is_yes(minetest.settings:get_bool('raycast_hitcheck'))
 local damage_steps = 0
 
+local function get_player_meta(player)
+  local p = player
+  if type(player) == "string" then
+    p = minetest.get_player_by_name(player)
+  end
+  return p:get_meta()
+end
+
+function weather.get_weather(player)
+  local meta = get_player_meta(player)
+  return meta:get_string("weather_type")
+end
+
+function weather.set_weather(player,type)
+  local meta = get_player_meta(player)
+  meta:set_string("weather_type",type)
+end
+
+function weather.get_wind()
+  return {
+    x = storage:get_float("wind_x"),
+    y = 0,
+    z = storage:get_float("wind_z")
+  }
+end
+
+function weather.set_wind(x,z)
+  if type(x) == "table" then
+    storage:set_float("wind_x",x.x)
+    storage:set_float("wind_z",x.z)
+  else
+    storage:set_float("wind_x",x)
+    storage:set_float("wind_z",z)
+  end
+end
+
 local function handle_damage(damage,player, downfall_origin)
 	if not damage then return end
 	damage_steps = damage_steps +1
@@ -143,64 +182,67 @@ local function handle_damage(damage,player, downfall_origin)
 	end
 end
 
-local function weather_step()
-  local current_downfall = weather_mod.registered_downfalls[weather.type]
-  if current_downfall==nil then return end
-  for _, player in ipairs(minetest.get_connected_players()) do
-    local ppos = player:getpos()
+local function weather_step(player,meta)
+  local weather_type = meta:get_string("weather_type")
+  if weather_type and weather_type ~= "" and weather_type ~= "none" then
+    local current_downfall = weather.registered_downfalls[weather_type]
+    if current_downfall then
+      local ppos = player:getpos()
+  
+      if ppos.y > 120 then return end
+  
+      local wind = weather.get_wind()
+      local wind_pos = vector.multiply(wind,-1)
 
-    if ppos.y > 120 then return end
-
-    local wind_pos = vector.multiply(weather.wind,-1)
-
-    local minp = vector.add(vector.add(ppos, current_downfall.min_pos),wind_pos)
-    local maxp = vector.add(vector.add(ppos, current_downfall.max_pos),wind_pos)
-
-    local vel = {x=weather.wind.x,y=-current_downfall.falling_speed,z=weather.wind.z}
-    local acc = {x=0, y=0, z=0}
-
-    local exp = current_downfall.exptime
-
-    minetest.add_particlespawner({
-      amount=current_downfall.amount, time=0.5,
-      minpos=minp, maxpos=maxp,
-      minvel=vel, maxvel=vel,
-      minacc=acc, maxacc=acc,
-      minexptime=exp, maxexptime=exp,
-      minsize=current_downfall.size, maxsize=current_downfall.size,
-      collisiondetection=true, collision_removal=true,
-      vertical=true,
-      texture=current_downfall.texture, player=player:get_player_name()
-    })
-
-    local downfall_origin = vector.divide(vector.add(minp,maxp),2)
-    handle_damage(current_downfall.damage_player,player,downfall_origin)
+      local minp = vector.add(vector.add(ppos, current_downfall.min_pos),wind_pos)
+      local maxp = vector.add(vector.add(ppos, current_downfall.max_pos),wind_pos)
+    
+      local vel = {x=wind.x,y=-current_downfall.falling_speed,z=wind.z}
+      local acc = {x=0, y=0, z=0}
+    
+      local exp = current_downfall.exptime
+    
+      minetest.add_particlespawner({
+        amount=current_downfall.amount, time=0.5,
+        minpos=minp, maxpos=maxp,
+        minvel=vel, maxvel=vel,
+        minacc=acc, maxacc=acc,
+        minexptime=exp, maxexptime=exp,
+        minsize=current_downfall.size, maxsize=current_downfall.size,
+        collisiondetection=true, collision_removal=true,
+        vertical=true,
+        texture=current_downfall.texture, playername=player:get_player_name()
+      })
+  
+      local downfall_origin = vector.divide(vector.add(minp,maxp),2)
+      handle_damage(current_downfall.damage_player,player,downfall_origin)
+    end
   end
 end
 
 minetest.register_globalstep(function()
-  if math.random(1, 10000) == 1 then
-    weather.type = "none"
-    if minetest.get_modpath("lightning") then
-      lightning.auto = false
-      --rawset(lightning,"auto",false)
-    end
-  else
-    for id,w in pairs(weather_mod.registered_downfalls) do
-      if math.random(1, 50000) == 1 then
-        weather.wind = {
-          x = math.random(0,10),
-          y = 0,
-          z = math.random(0,10)
-        }
-        if (not w.disabled) and vector.length(weather.wind) >= w.min_wind then
-          weather.type = id
-          weather_mod.handle_lightning(w)
-          break
+  if math.random(1, 50000) == 1 then
+    weather.set_wind(math.random(0,10),math.random(0,10))
+  end
+  for _, player in ipairs(minetest.get_connected_players()) do
+    local meta = get_player_meta(player)
+    if math.random(1, 10000) == 1 then
+      meta:set_string("weather_type","none")
+      --[[if minetest.get_modpath("lightning") then
+        lightning.auto = false
+      end]]
+    else
+      for id,w in pairs(weather.registered_downfalls) do
+        if math.random(1, 50000) == 1 then
+          if (not w.disabled) and vector.length(weather.get_wind()) >= w.min_wind then
+            meta:set_string("weather_type",id)
+            --weather_mod.handle_lightning(w)
+            break
+          end
         end
       end
     end
-  end
 
-  weather_step()
-end)
+    weather_step(player,meta)
+  end
+end)

weather/command.lua

@@ -3,29 +3,35 @@ minetest.register_privilege("weather", {
 	give_to_singleplayer = false
 })
 
+local function list_types()
+  local types="none"
+  for i,_ in pairs(weather.registered_downfalls) do
+    types=types..", "..i
+  end
+end
+
 -- Set weather
 minetest.register_chatcommand("setweather", {
-	params = "<weather>",
-	description = "Set weather to a registered type of downfall\
-		show all types when no parameters are given", -- full description
-	privs = {weather = true},
-	func = function(name, param)
-		if param == nil or param == "" or param == "?" then
-			local types="none"
-			for i,_ in pairs(weather_mod.registered_downfalls) do
-				types=types..", "..i
-			end
-			minetest.chat_send_player(name, "avalible weather types: "..types)
-		else
-			if weather_mod.registered_downfalls[param] == nil and not param == "none" then
-				minetest.chat_send_player(name, "This type of weather is not registered.\n"..
-					"To list all types of weather run the command without parameters.")
-			else
-				weather.type = param
-				weather_mod.handle_lightning()
-			end
-		end
-	end
+  params = "<weather>",
+  description = "Set weather to a registered type of downfall\
+      show all types when no parameters are given", -- full description
+  privs = {weather = true},
+  func = function(name, param)
+    if param == nil or param == "" or param == "?" then
+      return false, "registered weather types: "..list_types()
+    end
+    local w = weather.registered_downfalls[param] 
+    if (not w) and param ~= "none" then
+      return false, "This type of weather is not registered.\n"..
+        "registered types: "..list_types()
+    end
+    if w.disabled then
+      minetest.chat_send_player(name,param.." is disabled.")
+    end
+    weather.set_weather(name,param)
+    --weather_mod.handle_lightning()
+    return true
+  end
 })
 
 -- Set wind
@@ -35,8 +41,7 @@ minetest.register_chatcommand("setwind", {
 	privs = {weather = true},
 	func = function(name, param)
 		if param==nil or param=="" then
-			minetest.chat_send_player(name, "please provide two comma seperated numbers")
-			return
+			return false,"please provide two comma seperated numbers"
 		end
 		local x,z = string.match(param, "^([%d.-]+)[, ] *([%d.-]+)$")
 		x=tonumber(x)
@@ -45,9 +50,10 @@ minetest.register_chatcommand("setwind", {
 			x, z = string.match(param, "^%( *([%d.-]+)[, ] *([%d.-]+) *%)$")
 		end
 		if x and z then
-			weather.wind = vector.new(x,0,z)
+			weather.set_wind(x,z)
+			return true
 		else
-			minetest.chat_send_player(name, param.." are not two comma seperated numbers")
+			return false,param.." are not two comma seperated numbers"
 		end
 	end
 })

weather/init.lua

@@ -1,39 +1,11 @@
--- Weather:
--- * rain
--- * snow
--- * wind
-
 assert(minetest.add_particlespawner, "Weather doesn't work with this really old minetest.")
 
-weather_mod={
-	modpath=minetest.get_modpath("weather"),
+weather = {
+  modpath = minetest.get_modpath("weather"),
 }
 
-weather = (function()
-	local file_name = minetest.get_worldpath() .. "/weather"
-
-	minetest.register_on_shutdown(function()
-		local file = io.open(file_name, "w")
-		file:write(minetest.serialize(weather))
-		file:close()
-	end)
-
-	local file = io.open(file_name, "r")
-	if file ~= nil then
-		local readweather = minetest.deserialize(file:read("*a"))
-		file:close()
-		if type(readweather)~="table" then
-			return {type = "none", wind = 0}
-		end
-		return readweather
-	end
-	return {type = "none", wind = vector.new(0,0,0)}
-end) ()
-
-dofile(weather_mod.modpath.."/api.lua")
-dofile(weather_mod.modpath.."/rain.lua")
-dofile(weather_mod.modpath.."/sand.lua")
-dofile(weather_mod.modpath.."/snow.lua")
-dofile(weather_mod.modpath.."/command.lua")
-
-weather_mod.handle_lightning()
+dofile(weather.modpath.."/api.lua")
+dofile(weather.modpath.."/rain.lua")
+dofile(weather.modpath.."/sand.lua")
+dofile(weather.modpath.."/snow.lua")
+dofile(weather.modpath.."/command.lua")

weather/rain.lua

@@ -1,5 +1,5 @@
 -- Rain
-weather_mod.register_downfall("weather:rain",{
+weather.register_downfall("weather:rain",{
 	min_pos = {x=-15, y=7, z=-15},
 	max_pos = {x= 15, y=7, z= 15},
 	falling_speed=10,
@@ -10,7 +10,7 @@ weather_mod.register_downfall("weather:rain",{
 	enable_lightning=true,
 })
 
-weather_mod.register_downfall("weather:storm",{
+weather.register_downfall("weather:storm",{
   min_pos = {x = -15, y = 7, z = -15},
   max_pos = {x = 15, y = 7, z = 15},
   falling_speed = 10,

weather/sand.lua

@@ -1,4 +1,4 @@
-weather_mod.register_downfall("weather:sandstorm",{
+weather.register_downfall("weather:sandstorm",{
   min_pos = {x=-20, y=0, z=-20},
   max_pos = {x= 20, y=2, z= 20},
   falling_speed=-1,

weather/snow.lua

@@ -1,5 +1,5 @@
 -- Snow
-weather_mod.register_downfall("weather:snow",{
+weather.register_downfall("weather:snow",{
 	min_pos = {x=-15, y=7, z=-15},
 	max_pos = {x= 15, y=7, z= 15},
 	falling_speed=5,
@@ -9,7 +9,7 @@ weather_mod.register_downfall("weather:snow",{
 	texture="weather_snow.png",
 })
 
-weather_mod.register_downfall("weather:hail",{
+weather.register_downfall("weather:hail",{
   min_pos = {x=-15, y=7, z=-15},
   max_pos = {x= 15, y=7, z= 15},
   falling_speed=25,
@@ -37,6 +37,25 @@ minetest.register_node("weather:snow_cover", {
 	drop = {}
 })
 
+local function get_nearest_player(pos,range_distance)
+  local player, min_distance = nil, range_distance
+  local position = pos
+
+  local all_objects = minetest.get_objects_inside_radius(position, range_distance)
+  for _, object in pairs(all_objects) do
+    if object:is_player() then
+      local player_position = object:getpos()
+      local distance = vector.distance(position, player_position)
+
+      if distance < min_distance then
+        min_distance = distance
+        player = object
+      end
+    end
+  end
+  return player
+end
+
 -- Snow cover ABM when snow_covers_abm setting is set to `true`
 if minetest.is_yes(minetest.settings:get_bool('snow_covers_abm')) then
 	minetest.log('action', '[weather] Loaded fast computer ABM (snow covers when weather:snow is set)')
@@ -46,16 +65,19 @@ if minetest.is_yes(minetest.settings:get_bool('snow_covers_abm')) then
 		interval = 10.0,
 		chance = 80,
 		action = function (pos, node)
-			if weather.type == "weather:snow" then
-				if minetest.registered_nodes[node.name].drawtype == "normal"
-				or minetest.registered_nodes[node.name].drawtype == "allfaces_optional" then
-					local np = vector.add(pos, {x=0, y=1, z=0})
-					if minetest.env:get_node_light(np, 0.5) == 15
-					and minetest.env:get_node(np).name == "air" then
-						minetest.env:add_node(np, {name="weather:snow_cover"})
-					end
-				end
-			end
-		end
+		  local player = get_nearest_player(pos,50)
+		  if not player then return end
+			if weather.get_type(player) ~= "weather:snow" then
+			 return
+		  end
+			if minetest.registered_nodes[node.name].drawtype == "normal"
+          or minetest.registered_nodes[node.name].drawtype == "allfaces_optional" then
+        local np = vector.add(pos, {x=0, y=1, z=0})
+        if minetest.env:get_node_light(np, 0.5) == 15
+            and minetest.env:get_node(np).name == "air" then
+          minetest.env:add_node(np, {name="weather:snow_cover"})
+        end
+      end
+    end
 	})
 end