Initial commit

README.md

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+# Disable Fall Damage [`no_fall_damage`]
+Version: 1.0.0
+
+This mod disables fall damage completely.
+
+## Technical notes
+This mod only works if no other mod overwrites the
+`fall_damage_add_percent` group (unlikely).
+
+## License
+This mod is licenced under the MIT License.

init.lua

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+-- Removing fall damage is done by overwriting the group
+-- fall_damage_add_percent of all nodes. ]]
+function remove_fall_damage()
+	for itemstring, def in pairs(minetest.registered_nodes) do
+		local groups = def.groups and table.copy(def.groups)
+		if groups then
+			groups.fall_damage_add_percent = -100
+			-- Let's hack the node!
+			minetest.override_item(itemstring, { groups = groups })
+		end
+	end
+end
+
+minetest.register_on_mods_loaded(remove_fall_damage)

mod.conf

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+name = no_fall_damage
+description = Disables fall damage.