Add chests, the beginnings of a machines API, and other things

mods/rgt_inv/init.lua

@@ -0,0 +1,95 @@
+rgt_inv = {}
+local ns = rgt_inv
+
+Inventory = setmetatable({
+    new = function(p)
+        local e = setmetatable({
+            player = p,
+            state = {
+                proximate_machines = {}
+            }
+        }, {
+            __index = Inventory,
+            -- Setting a value on the Inventory instance directly will
+            -- automatically update the player's inventory formspec.
+            -- `inv.state` should be used in cases where this is not desirable.
+            __newindex = function(e, k, v)
+                e.state[k] = v
+                e:rebuild()
+            end
+        })
+        e:rebuild()
+        return e
+    end,
+    rebuild = function(e)
+        local fs = {"\
+            formspec_version[10]\
+            size[12,10]\
+            style_type[button,image_button;border=false]\
+        "}
+        for x = 0, 7 do
+            for y = 0, 3 do
+                fs[#fs +1] = "\
+                image["..(x *1.25 +1.125 -0.0625)..","..(y *1.25 +4.5 -0.0625)..";1.14,1.14;rgt_other_button_bg.png;8,8]\
+                "
+            end
+        end
+        fs[#fs +1] = "\
+        style_type[image_button;noclip=true;bgimg=rgt_button_bg.png;bgimg_middle=8,8]\
+        "
+        local i = 0
+        for _, x in ipairs(e.state.proximate_machines) do
+            local y = i > 11 and 10.5 or -1
+            fs[#fs +1] = "image_button["..(i %11 +0.125)..","..y..";0.75,0.75;rgt_stone.png;blah;]"
+            i = i +1
+        end
+        fs[#fs +1] = "\
+            list[current_player;main;1.125,4.5;8,4;]\
+            list[current_player;craft;3,0.5;3,3;]\
+            listring[]\
+            list[current_player;craftpreview;7,1;1,1;]\
+        "
+        e.player:set_inventory_formspec(table.concat(fs))
+    end,
+    on_action = function(e, data)
+        
+    end
+}, {
+    __call = function(_, ...)
+        return Inventory.new(...)
+    end
+})
+
+local last_time = 0
+minetest.register_globalstep(function()
+    local time = minetest.get_us_time()
+    -- Scan for machines every second.
+    if time -last_time > 1000000 then
+        for name, m in pairs(rgt.players) do
+            local pm = {}
+            local machines = minetest.find_nodes_in_area(m.pos:offset(-7, -7, -7), m.pos:offset(7, 7, 7), "group:rgt_machine", true)
+            for type, positions in pairs(machines) do
+                pm[#pm +1] = {
+                    type = type,
+                    pos = positions[math.random(1, #positions)]
+                }
+            end
+            if not (#pm <= 0 and #m.inv.state.proximate_machines <= 0) then
+                -- Give the machines list a predictable order by sorting it alphabetically prior to submission.
+                table.sort(pm, function(a, b) return a.type < b.type end)
+                m.inv.proximate_machines = pm
+            end
+        end
+        last_time = time
+    end
+end)
+
+
+minetest.register_chatcommand("/lua", {
+    privs = {server = true},
+    func = function(name, args)
+        xpcall(function()
+            loadstring(args)()
+        end, say)
+    end
+})

mods/rgt_inv/mod.conf

@@ -0,0 +1,2 @@
+name = rgt_inv
+depends = rgt_player