Version 0.95 BETA

modules/gamelib/protocolgame.lua

@@ -0,0 +1,59 @@
+local opcodeCallbacks = {}
+local extendedCallbacks = {}
+
+function ProtocolGame:onOpcode(opcode, msg)
+  for i, callback in pairs(opcodeCallbacks) do
+    if i == opcode then
+      callback(self, msg)
+      return true
+    end
+  end
+  return false
+end
+
+function ProtocolGame:onExtendedOpcode(opcode, buffer)
+  local callback = extendedCallbacks[opcode]
+  if callback then
+    callback(self, opcode, buffer)
+  end
+end
+
+function ProtocolGame.registerOpcode(opcode, callback)
+  if opcodeCallbacks[opcode] then
+    error('opcode ' .. opcode .. ' already registered will be overriden')
+  end
+
+  opcodeCallbacks[opcode] = callback
+end
+
+function ProtocolGame.unregisterOpcode(opcode)
+  opcodeCallbacks[opcode] = nil
+end
+
+function ProtocolGame.registerExtendedOpcode(opcode, callback)
+  if not callback or type(callback) ~= 'function' then
+    error('Invalid callback.')
+  end
+
+  if opcode < 0 or opcode > 255 then
+    error('Invalid opcode. Range: 0-255')
+  end
+
+  if extendedCallbacks[opcode] then
+    error('Opcode is already taken.')
+  end
+
+  extendedCallbacks[opcode] = callback
+end
+
+function ProtocolGame.unregisterExtendedOpcode(opcode)
+  if opcode < 0 or opcode > 255 then
+    error('Invalid opcode. Range: 0-255')
+  end
+
+  if not extendedCallbacks[opcode] then
+    error('Opcode is not registered.')
+  end
+
+  extendedCallbacks[opcode] = nil
+end