Added gravity based on height

2 files changed, 36 insertions, 0 deletions

diff --git a/mods/vzxv_gravity/init.lua b/mods/vzxv_gravity/init.lua
new file mode 100644
index 0000000..581a677
--- /dev/null
+++ b/mods/vzxv_gravity/init.lua
@@ -0,0 +1,33 @@
+local gravity_objects = {}
+
+local e = 2.718
+
+local function gravity(ylevel)
+	return 2 / (1+(e ^ (ylevel/6000)))
+end
+
+local gravmul = -9.81
+
+local gravfunc = function(e)
+	local pos = e:get_pos()
+	local grav = gravity(pos.y+30000) * gravmul
+	e:set_acceleration({x=0,y=grav,z=0})
+end
+
+function vzxv.register_gravity(entity)
+	local entdef = minetest.registered_entities[entity]
+	local old_onstep = entdef.on_step or function() end
+	entdef.on_step = function(self,dtime,moveresult)
+		gravfunc(self)
+		return old_onstep(self,dtime,moveresult)
+	end
+end
+
+minetest.register_globalstep(function()
+	local players = minetest.get_connected_players()
+	for _,player in ipairs(players) do
+		player:set_physics_override({
+			gravity = gravity(player:get_pos().y)
+		})
+	end
+end)
\ No newline at end of file
diff --git a/mods/vzxv_gravity/mod.conf b/mods/vzxv_gravity/mod.conf
new file mode 100644
index 0000000..e51b4df
--- /dev/null
+++ b/mods/vzxv_gravity/mod.conf
@@ -0,0 +1,3 @@
+name=vzxv_gravity
+description = Vzxv
+depends = vzxv
\ No newline at end of file