some more witch spike notes

server/cmd/main.go

@@ -65,7 +65,6 @@ func _main() (err error) {
 	grpcServer.Serve(l)
 
 	return nil
-
 }
 
 type gameWorldServer struct {

witch_spike.lua

@@ -1,11 +1,22 @@
 -- This file contains some drafts on how a WITCH API could look in Lua.
 -- Assumed in-scope functions:
+--  has(data)
+--    tells the server what data this object has. If this object is live (ie,
+--    in world) when opened for editing this invocation will match the current
+--    state of the data in the database. Anything can go in here and all keys
+--    are optional.
+--  allows(permissions)
+--    tells the server what this object's permissions are. the permissions are
+--    read, write, carry, and execute. permissions can have value of either
+--    "owner" or "world". if unspecified, a permission is set to "owner".
 --  hears(pattern, callback)
 --    registers a callback called when an object in the same room as this one
 --    SAYs something that matches pattern
 --  sees(pattern, callback)
 --    registers a callback called when an object in the same room as this one
 --    EMOTEs something that matches pattern
+--  provides(verb_pattern, callback)
+--    registers a callback called when an object in the same room as this one runs "/verb_pattern"
 --  says(message)
 --    issues a SAY to the server that other objects in the same room will overhear
 --  does(message)
@@ -13,12 +24,47 @@
 --  room.says(message)
 --    tells the server to have the room "say" something. this is useful when an
 --    object wants something said in the third person.
+--  random(min, max)
+--    returns a random integer between min and max. This is provided so callers
+--    do not have to worry about seeding randomness themselves.
+--  create(name, code)
+--    returns a new object with the given name and Lua code. owner and permissions are transferred from calling object
+--  drop(object)
+--    drop an object on the ground of the current room
+--  tell_sender(msg)
+--    issues a WHISPER to whoever triggered a callback
+--  teleport_sender(room_id)
+--    teleports whoever triggered a callback to the specified room
+--  move_sender(direction)
+--    teleports whoever triggered a callback in the specified direction
+--
+--  Callbacks are passed "args," a table which contains the utterance that
+--  triggered the handler. this table can be accessed in a few ways:
+-- 
+--  args.get("thing")
+--    returns whatever string occupied a placeholder called $thing. for example, in this provides:
+--
+--    provides("give $thing", function(args) end)
+--
+--    args.get("thing") has whatever space delimited value came after "give".
+--
+--  args.contains("some substring")
+--    returns true if "some substring" is found when all of the args are joined
+--    together in one string
+--
 
 -- Example 1: the nervous pasta
-has = {
+has({
   name = "spaghetti",
   description = "a plate of spaghetti covered in a fresh pomodoro sauce"
-}
+})
+
+allows({
+  read = "world",
+  write = "owner"
+  carry = "owner",
+  execute = "world",
+})
 
 hears("*eat*", function(msg)
   does("quivers nervously")
@@ -28,18 +74,50 @@ sees("*slurp*", function(emote)
   does("inches away from " + sender.get("name"))
 end)
 
+-- Example 1a: the nervous pasta written pedantically
+-- This example just demonstrates the syntactic sugar of "hears" and "sees"
+has({
+  name = "spaghetti",
+  description = "a plate of spaghetti covered in a fresh pomodoro sauce"
+})
+
+allows({
+  read = "world",
+  write = "owner"
+  carry = "owner",
+  execute = "world",
+})
+
+provides("say", function(args)
+  if args.contain("eat") then
+    does("quivers nervously")
+  end
+end)
+
+provides("emote", function(args)
+  if args.contain("slurp") then
+    does("inches away from " + sender.get("name"))
+  end
+end)
+
 -- Example 2: the slot machine
-has = {
+has({
   name = "slot machine",
   description = "a vintage 1960s slot machine from Las Vegas"
-}
+})
+
+allows({
+  read = "world",
+  write = "owner"
+  carry = "owner",
+  execute = "world",
+})
 
 provides("pull $this", function(args)
-  math.randomseed(os.time())
   says("KA CHANK")
-  one = math.random(0, 9)
-  two = math.random(0, 9)
-  three = math.random(0,9)
+  one   = random(0, 9)
+  two   = random(0, 9)
+  three = random(0, 9)
   say("you got" + string.format("%d %d %d", one, two, three))
 end)
 
@@ -50,12 +128,34 @@ provides("whack $this", function(args)
 end)
 
 -- Example 3: vending machine
-has = {
+has({
   name = "vending machine",
-  description = "looks like the kind of thing you'd see in Tokyo"
-}
+  description = "looks like the kind of thing you'd see in Tokyo",
+  money = 0
+})
 
-provides("give $this $money", function(args)
-  amount = args.get("money")
-  -- TODO
+allows({
+  read = "world",
+  write = "owner"
+  carry = "owner",
+  execute = "world",
+})
+
+provides("give $this $money $unit", function(args)
+  amount = tonumber(args.get("money")) or 0
+  unit = args.get("unit")
+  if unit != "yen" then
+    say("i only take yen sorry")
+    return
+  end
+
+  set("money", get("money") + amount)
+  if get("money") > 100 then
+    room.says("the " + get("name") + " clatters a bit then drops a pocari sweat on the floor")
+    set("money", 0)
+    bottle = create("a bottle of pocari sweat", "")
+    drop(bottle)
+  else
+    say("i need more money")
+  end
 end)