Added a workaround for mobile using zoom key

* Bow can now be used with zoom key aside of RMB
* Crossbow can now be loaded with zoom key as well
* Spyglass can now be used with zoom key

mods/CORE/controls/init.lua

@@ -31,6 +31,7 @@ local known_controls = {
 	aux1 = true,
 	down = true,
 	up = true,
+	zoom = true,
 }
 
 minetest.register_on_joinplayer(function(player)

mods/ITEMS/mcl_bows/bow.lua

@@ -239,7 +239,7 @@ end
 
 
 controls.register_on_release(function(player, key, time)
-	if key~="RMB" then return end
+	if key~="RMB" and key~="zoom" then return end
 	--local inv = minetest.get_inventory({type="player", name=player:get_player_name()})
 	local wielditem = player:get_wielded_item()
 	if (wielditem:get_name()=="mcl_bows:bow_0" or wielditem:get_name()=="mcl_bows:bow_1" or wielditem:get_name()=="mcl_bows:bow_2" or
@@ -307,12 +307,14 @@ end)
 controls.register_on_hold(function(player, key, time)
 	local name = player:get_player_name()
 	local creative = minetest.is_creative_enabled(name)
-	if key ~= "RMB" or not (creative or get_arrow(player)) then
+	if (key ~= "RMB" and key ~= "zoom") or not (creative or get_arrow(player)) then
 		return
 	end
 	--local inv = minetest.get_inventory({type="player", name=name})
 	local wielditem = player:get_wielded_item()
-	if bow_load[name] == nil and (wielditem:get_name()=="mcl_bows:bow" or wielditem:get_name()=="mcl_bows:bow_enchanted") and wielditem:get_meta():get("active") and (creative or get_arrow(player)) then
+	if bow_load[name] == nil
+		and (wielditem:get_name()=="mcl_bows:bow" or wielditem:get_name()=="mcl_bows:bow_enchanted")
+		and (wielditem:get_meta():get("active") or key == "zoom") and (creative or get_arrow(player)) then
 			local enchanted = mcl_enchanting.is_enchanted(wielditem:get_name())
 			if enchanted then
 				wielditem:set_name("mcl_bows:bow_0_enchanted")

mods/ITEMS/mcl_bows/crossbow.lua

@@ -263,7 +263,7 @@ end
 
 
 controls.register_on_release(function(player, key, time)
-	if key~="RMB" then return end
+	if key~="RMB" and key~="zoom" then return end
 	--local inv = minetest.get_inventory({type="player", name=player:get_player_name()})
 	local wielditem = player:get_wielded_item()
 	if wielditem:get_name()=="mcl_bows:crossbow_2" and get_arrow(player) or wielditem:get_name()=="mcl_bows:crossbow_2" and minetest.is_creative_enabled(player:get_player_name()) or wielditem:get_name()=="mcl_bows:crossbow_2_enchanted" and get_arrow(player) or wielditem:get_name()=="mcl_bows:crossbow_2_enchanted" and minetest.is_creative_enabled(player:get_player_name()) then
@@ -359,7 +359,7 @@ end)
 controls.register_on_hold(function(player, key, time)
 	local name = player:get_player_name()
 	local creative = minetest.is_creative_enabled(name)
-	if key ~= "RMB" then
+	if key ~= "RMB" and key ~= "zoom" then
 		return
 	end
 	--local inv = minetest.get_inventory({type="player", name=name})
@@ -373,7 +373,9 @@ controls.register_on_hold(function(player, key, time)
 		BOW_CHARGE_TIME_FULL = _BOW_CHARGE_TIME_FULL
 	end
 
-	if bow_load[name] == nil and (wielditem:get_name()=="mcl_bows:crossbow" or wielditem:get_name()=="mcl_bows:crossbow_enchanted") and wielditem:get_meta():get("active") and (creative or get_arrow(player)) then
+	if bow_load[name] == nil
+		and (wielditem:get_name()=="mcl_bows:crossbow" or wielditem:get_name()=="mcl_bows:crossbow_enchanted")
+		and (wielditem:get_meta():get("active") or key=="zoom") and (creative or get_arrow(player)) then
 			local enchanted = mcl_enchanting.is_enchanted(wielditem:get_name())
 			if enchanted then
 				wielditem:set_name("mcl_bows:crossbow_0_enchanted")

mods/ITEMS/mcl_spyglass/init.lua

@@ -58,17 +58,21 @@ local function remove_scope(player)
 end
 
 controls.register_on_press(function(player, key)
-	if key ~= "RMB" then return end
+	if key ~= "RMB" and key ~= "zoom" then return end
+	if spyglass_scope[player] == nil then
 		add_scope(player)
+	end
 end)
 
 controls.register_on_release(function(player, key, time)
-	if key ~= "RMB" then return end
+	if key ~= "RMB" and key ~= "zoom" then return end
+	local ctrl = player:get_player_control()
+	if key == "RMB" and ctrl.zoom or key == "zoom" and ctrl.place then return end
 	remove_scope(player)
 end)
 
 controls.register_on_hold(function(player, key, time)
-	if key ~= "RMB" then return end
+	if key ~= "RMB" and key ~= "zoom" then return end
 	local wielditem = player:get_wielded_item()
 	if wielditem:get_name() == "mcl_spyglass:spyglass" then
 		mcl_fovapi.apply_modifier(player, "spyglass") -- apply the FOV effect.