first commit

README.md

@@ -1,2 +1,33 @@
 # player_physics
 A minetest mod to centralize the management of player's stats(sprint, jump, gravity)
+Because many mods (sprint, 3d_armor and others) rewrite the stats in their corner and it cancel
+
+
+***API***
+player_physics.set_stats(player, "uniq_name", table)
+player_physics.remove(player, "uniq_name")
+
+**Exemple**
+ 
+ - player_physics.set_stats(player, "potion_speedlvl1", {speed=0.35})
+ 
+ - player_physics.set_stats(player, "sprint_mod", {speed=0.35, jump=0.1})
+ 
+ - player_physics.remove_stats(player, "potion_speedlvl1")
+
+**Temporary effect**
+
+ - player_physics.add_effect(player, "uniq_name", time, stats)
+ - player_physics.remove_effect(player, "uniq_name")
+
+**Exemple**
+You make a potion that adds speed for 10 seconds.
+
+    on_use = function(itemstack, user, pointed_thing
+       player_physics.add_effect(user, "potion_speedlvl1", 10, {speed=0.6})
+       itemstack:take_item()
+       return itemstack
+    end
+
+
+

init.lua

@@ -0,0 +1,121 @@
+local players = {}
+player_physics = {}
+
+
+function player_physics.check(playerName)
+	if players[playerName] == nil then
+		players[playerName] = {speed = {}, jump = {}, gravity={}, temp={}}
+	end
+end
+
+
+minetest.register_on_joinplayer(function(player)
+	local playerName = player:get_player_name()
+	player_physics.check(playerName)
+end)
+
+
+minetest.register_on_leaveplayer(function(player)
+	local playerName = player:get_player_name()
+	players[playerName] = nil
+end)
+
+
+function player_physics.set_stats(player, uuid, stats)
+	if type(stats) ~= "table" then
+		minetest.log("error", "player_physics: set_stats(player, uuid, stat) stats must be table(eg:{speed=1})")
+		return
+	end
+	local playerName = player:get_player_name()
+	player_physics.check(playerName)
+	for stat, v in pairs(stats) do
+		if (stat == "speed" or stat == "jump" or stat == "gravity") and type(v) == "number" then
+			players[playerName][stat][uuid] = v
+		end
+	end
+end
+
+
+function player_physics.remove_stats(player, uuid)
+	local playerName = player:get_player_name()
+	player_physics.check(playerName)
+	for _, stat in pairs({"speed", "jump", "gravity"}) do
+		players[playerName][stat][uuid] = nil
+	end
+end
+
+
+function player_physics.add_effect(player, uuid, time, stats)
+	if type(stats) ~= "table" then
+		minetest.log("error", "player_physics: add_effect(player, uuid, time, stats) stats must be table(eg:{speed=1})")
+		return
+	end
+	if type(time) ~= "number" then
+		minetest.log("error", "player_physics: add_effect(player, uuid, time, stats) time must be number")
+		return
+	end
+	local playerName = player:get_player_name()
+	player_physics.check(playerName)
+	for stat, v in pairs(stats) do
+		if (stat == "speed" or stat == "jump" or stat == "gravity") and type(v) == "number" then
+			players[playerName]["temp"][uuid][stat] = {value=v, time=time}
+		end
+	end
+end
+
+
+function player_physics.remove_effect(player, uuid)
+	local playerName = player:get_player_name()
+	player_physics.check(playerName)
+	players[playerName]["temp"][uuid] = nil
+end
+
+
+minetest.register_globalstep(function(dtime)
+	for _,player in ipairs(minetest.get_connected_players()) do
+		local playerName = player:get_player_name()
+		if playerName ~= "" then
+			player_physics.check(playerName)
+			local stats ={speed=1, jump=1, gravity=1}
+
+			for _, stat in pairs({"speed", "jump", "gravity"}) do
+				for uuid, v in pairs(players[playerName][stat]) do
+					stats[stat] = stats[stat] + v
+				end
+			end
+
+			--temporary effect
+			for uuid, _ in pairs(players[playerName]["temp"]) do
+				for stat, v in pairs(players[playerName]["temp"][uuid]) do
+					stats[stat] = stats[stat] + v.value
+					local t = v.time-dtime
+					if t > 0 then
+						players[playerName]["temp"][uuid][stat].time = t
+					else
+						players[playerName]["temp"][uuid][stat] = nil
+					end
+				end
+			end --/temporary effect
+
+			if stats.speed > 4 then
+				stats.speed = 4
+			elseif stats.speed < 0 then
+				stats.speed = 0
+			end
+
+			if stats.jump > 3 then
+				stats.jump = 3
+			elseif stats.jump < 0 then
+				stats.jump = 0
+			end
+
+			if stats.gravity > 2 then
+				stats.gravity = 2
+			elseif stats.gravity < -2 then
+				stats.gravity = -2
+			end
+			player:set_physics_override(stats)
+		end
+	end
+end)
+