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

@@ -43,21 +43,17 @@ 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
-			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
-				if self.user then
-					local player = minetest.get_player_by_name(self.user)
-					if player then
-						shooter.blast(above, 4, 50, 8, player)
-					end
+	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
+			if self.user then
+				local player = minetest.get_player_by_name(self.user)
+				if player then
+					shooter.blast(above, 4, 50, 8, player)
 				end
-				self.object:remove()
 			end
-			self.timer = 0
+			self.object:remove()
 		end
 	end,
 	get_staticdata = function()
@@ -65,46 +61,148 @@ minetest.register_entity("shooter_rocket:rocket_entity", {
 	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.setting_getbool("creative_mode") then
-			itemstack:add_wear(65535 / 50)
+		if not minetest.get_modpath("physics") then
+			scoped[user:get_player_name()] = true
 		end
-		itemstack = "shooter_rocket:rocket_gun 1 "..itemstack:get_wear()
-		if pointed_thing.type ~= "nothing" then
-			local pointed = minetest.get_pointed_thing_position(pointed_thing)
-			if vector.distance(user:get_pos(), pointed) < 8 then
-				shooter.blast(pointed, 2, 50, 7)
-				return itemstack
+		if scoped[user:get_player_name()] then
+			if not minetest.setting_getbool("creative_mode") then
+				itemstack:add_wear(65535 / 50)
 			end
-		end
-		local pos = user:get_pos()
-		local dir = user:get_look_dir()
-		local yaw = user:get_look_horizontal()
-		if pos and dir and yaw then
-			pos.y = pos.y + user:get_properties().eye_height
-			local obj = minetest.add_entity(pos, "shooter_rocket:rocket_entity")
-			if obj then
-				minetest.sound_play("shooter_rocket_fire", {object=obj})
-				obj:set_velocity(vector.multiply(dir, 20))
-				obj:set_acceleration({x=dir.x * -3, y=-10, z=dir.z * -3})
-				obj:set_yaw(yaw + math.pi / 2)
-				local ent = obj:get_luaentity()
-				if ent then
-					ent.user = user:get_player_name()
+			itemstack = "shooter_rocket:rocket_gun 1 "..itemstack:get_wear()
+			if pointed_thing.type ~= "nothing" then
+				local pointed = minetest.get_pointed_thing_position(pointed_thing)
+				if vector.distance(user:get_pos(), pointed) < 8 then
+					shooter.blast(pointed, 2, 50, 7)
+					return itemstack
 				end
 			end
+			local pos = user:get_pos()
+			local dir = user:get_look_dir()
+			local yaw = user:get_look_horizontal()
+			if pos and dir and yaw then
+				pos.y = pos.y + user:get_properties().eye_height
+				local obj = minetest.add_entity(pos, "shooter_rocket:rocket_entity")
+				if obj then
+					minetest.sound_play("shooter_rocket_fire", {object=obj})
+					obj:set_velocity(vector.multiply(dir, 20))
+					obj:set_acceleration({x=dir.x * -3, y=-10, z=dir.z * -3})
+					obj:set_yaw(yaw + math.pi / 2)
+					local ent = obj:get_luaentity()
+					if ent then
+						ent.user = user:get_player_name()
+					end
+				end
+			end
+			return itemstack
 		end
-		return itemstack
 	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