Improve shooter_rocket

README.md

@@ -57,6 +57,8 @@ Adds simple hand grenades.
 
 **Depends:** shooter
 
+**Optional Depends:** physics (from capturetheflag)
+
 <img align="left" width="32" height="32" src="https://raw.githubusercontent.com/stujones11/shooter/master/shooter_rocket/textures/shooter_rocket_gun_loaded.png">
 Adds rocket missiles and launching gun.
 

shooter_rocket/init.lua

@@ -43,9 +43,7 @@ minetest.register_entity("shooter_rocket:rocket_entity", {
 			self.object:remove()
 		end
 	end,
-	on_step = function(self, dtime)
-		self.timer = self.timer + dtime
-		if self.timer > 0.2 then
+	on_step = function(self)
 		local pos = self.object:get_pos()
 		local above = {x=pos.x, y=pos.y + 1, z=pos.z}
 		if minetest.get_node(pos).name ~= "air" then
@@ -57,19 +55,116 @@ minetest.register_entity("shooter_rocket:rocket_entity", {
 			end
 			self.object:remove()
 		end
-			self.timer = 0
-		end
 	end,
 	get_staticdata = function()
 		return "expired"
 	end,
 })
 
+--- Scope functions taken from sniper_rifles mod
+
+------------------
+-- Private data --
+------------------
+
+-- Keep track of players who are scoping in, and their wielded item
+local scoped = {}
+
+-- Timer for scope-check globalstep
+local timer = 0.2
+
+local physics_overrides = {
+	speed = 0.3,
+	jump = 0
+}
+
+-------------
+-- Helpers --
+-------------
+
+local function show_scope(name, item_name)
+	local player = minetest.get_player_by_name(name)
+	if not player then
+		return
+	end
+
+	scoped[name] = item_name
+	player:set_fov(1.1, true)
+	physics.set(name, "shooter_rocket:scoping", physics_overrides)
+	player:hud_set_flags({ wielditem = false })
+end
+
+local function hide_scope(name)
+	local player = minetest.get_player_by_name(name)
+	if not player then
+		return
+	end
+
+	scoped[name] = nil
+	player:set_fov(0)
+	physics.remove(name, "shooter_rocket:scoping")
+	player:hud_set_flags({ wielditem = true })
+
+end
+
+local function on_rclick(item, placer, pointed_thing)
+	local name = placer:get_player_name()
+
+	-- Prioritize on "un-scoping", if player is using the scope
+	if not scoped[name] and pointed_thing.type == "node" then
+		return minetest.item_place(item, placer, pointed_thing)
+	end
+
+	if scoped[name] then
+		hide_scope(name)
+	else
+		-- Remove _loaded suffix added to item name by shooter
+		local item_name = item:get_name():gsub("_loaded", "")
+		show_scope(name, item_name)
+	end
+end
+
+------------------
+-- Scope-check --
+------------------
+
+-- Hide scope if currently wielded item is not the same item
+-- player wielded when scoping
+
+local time = 0
+if minetest.get_modpath("physics") then
+	minetest.register_globalstep(function(dtime)
+		time = time + dtime
+		if time < timer then
+			return
+		end
+
+		time = 0
+		for name, original_item in pairs(scoped) do
+			local player = minetest.get_player_by_name(name)
+			if not player then
+				scoped[name] = nil
+			else
+				local wielded_item = player:get_wielded_item():get_name():gsub("_loaded", "")
+				if wielded_item ~= original_item then
+					hide_scope(name)
+				end
+			end
+		end
+	end)
+end
+
 minetest.register_tool("shooter_rocket:rocket_gun_loaded", {
 	description = "Rocket Gun",
 	inventory_image = "shooter_rocket_gun_loaded.png",
 	groups = {not_in_creative_inventory=1},
+	on_place = on_rclick,
+	on_secondary_use = on_rclick,
 	on_use = function(itemstack, user, pointed_thing)
+		if not minetest.get_modpath("physics") then
+			scoped[user:get_player_name()] = true
+		end
+		if scoped[user:get_player_name()] then
 			if not minetest.setting_getbool("creative_mode") then
 				itemstack:add_wear(65535 / 50)
 			end
@@ -99,12 +194,15 @@ minetest.register_tool("shooter_rocket:rocket_gun_loaded", {
 				end
 			end
 			return itemstack
+		end
 	end,
 })
 
 minetest.register_tool("shooter_rocket:rocket_gun", {
 	description = "Rocket Gun",
 	inventory_image = "shooter_rocket_gun.png",
+	on_place = on_rclick,
+	on_secondary_use = on_rclick,
 	on_use = function(itemstack, user)
 		local inv = user:get_inventory()
 		if inv:contains_item("main", "shooter_rocket:rocket") then

shooter_rocket/mod.conf

@@ -1,3 +1,4 @@
 name = shooter_rocket
 description = Adds rocket missiles and launching gun
 depends = shooter
+optional_depends = physics