Immobilize: on fall

api.lua

@@ -1,13 +1,15 @@
 local get_player_information = minetest.get_player_information
 local get_us_time = minetest.get_us_time
 local add_entity = minetest.add_entity
-local player_data = pvp_revamped.player_data
+local immobilize_mul = pvp_revamped.config.immobilize_mul
 local shield_entity_pos = pvp_revamped.config.shield_entity_pos
 local shield_entity_rotate = pvp_revamped.config.shield_entity_rotate
 local shield_entity_scale = pvp_revamped.config.shield_entity_scale
+local player_data = pvp_revamped.player_data
 local armor_3d = minetest.global_exists("armor")
 local new = vector.new
 local floor = math.floor
+local abs = math.abs
 local y = 0
 
 -- Get or create player data.
@@ -304,3 +306,15 @@ function pvp_revamped.shield_inv(user, name, player_pdata, data)
 
     return false
 end
+
+function pvp_revamped.set_immobilize_data(player, speed, damage, tool_capabilities)
+    player:set_physics_override({speed = speed, jump = speed})
+
+    local _immobilize_mul = immobilize_mul
+
+    if tool_capabilities and tool_capabilities.immobilize_mul then
+        _immobilize_mul = tool_capabilities.immobilize_mul
+    end
+    
+    return {time = get_us_time(), value = abs(damage * _immobilize_mul)}
+end

player_events.lua

@@ -1,11 +1,16 @@
+local leg_immobilize_mul = pvp_revamped.config.leg_immobilize_mul
 local player_data = pvp_revamped.player_data
+local get_player_data = pvp_revamped.get_player_data
 local player_persistent_data = pvp_revamped.player_persistent_data
 local remove_text_center = pvp_revamped.remove_text_center
 local clear_blockdata = pvp_revamped.clear_blockdata
 local clear_shielddata = pvp_revamped.clear_shielddata
+local set_immobilize_data = pvp_revamped.set_immobilize_data
 local get_player_by_name = minetest.get_player_by_name
 local add_item = minetest.add_item
 local new = vector.new
+local max = math.max
+local min = math.min
 
 -- Create an empty data sheet for the player.
 minetest.register_on_joinplayer(function(player)
@@ -15,6 +20,17 @@ minetest.register_on_joinplayer(function(player)
     }
 end)
 
+-- Immobilize the player on fall.
+minetest.register_on_player_hpchange(function(player, hp_change, reason)
+    local data = get_player_data(player:get_player_name())
+    local dmg = max(hp_change - player:get_hp(), 1)
+    local speed = min(1 / dmg * leg_immobilize_mul, 0.01)
+
+    if reason.type == "fall" then
+        data.immobilize = set_immobilize_data(player, speed, hp_change)
+    end
+end)
+
 -- Drops an item at the given or player's position.
 local function drop(player, item, pos)
     -- Check if the param is true or not.