Non-standard Golang kit for Lux Season 2. Hopefully finished / stable now.

Notes on main.py and JSON format

• Kaggle expects to use main.py as the entry point, which also has to have some magical properties relating to an agent() function
• Here we just use a copy of the JavaScript kit's main.py - modified to call the bot instead of node main.js
• Note that the Go code expects the incoming JSON messages to have the complete (non-sparse) arrays provided
• The JavaScript kit's main.py does this (most other kits' main.py do not)

Notes on submissions

• Kaggle is running Linux
• Submissions need to be tar.gz files containing main.py and the compiled bot
• The bot file at least needs its file permissions set (e.g. to 0o777)
• A Python script is provided which allows Windows users (like me) to automate the whole process

Notes on internal data structures

• The main data structure is the Frame type, which is simply the JSON message sent by main.py, unmarshalled
• Since the structure of that is fairly complex, Frame is complex too - see structs.go
• NOTE THAT OBJECTS INSIDE THE FRAME ARE NOT VALID IN LATER TURNS - get the current object from the current frame instead
• Some helper methods are included to quickly get needed items, e.g. GetBoard(), MyFactories(), etc

Pointers vs values

• The Pos type should be stored/passed by value
• Then you can compare one Pos to another by simple == checking
• Also, if you get a Pos from a *Unit, it will be safe to mutate it if you want to
• *Unit and *Factory objects should be stored/passed by pointer, because:
• The API stores new actions in the objects themselves
• These are then sent to the lux_s2 referee at the end of each turn
• If you make copies of the objects, any actions in them won't be seen
• So just keep pointers to them instead, then you've got the right ones

API outline (possibly subject to change, WIP)

type XYer interface {		// Implemented by Pos, *Unit, and *Factory
	XY() (int, int)
}

func Run(bidder func(*Frame), placer func(*Frame), main_ai func(*Frame))
func CreateLog(filename string) error
func Log(format_string string, args ...interface{})
func Dist(a XYer, b XYer) int

func (self *Frame) Bid(faction string, bid int)
func (self *Frame) PlaceFactory(pos Pos, metal int, water int)
func (self *Frame) GetBoard() *Board
func (self *Frame) GetCfg() *EnvCfg
func (self *Frame) Width() int
func (self *Frame) Height() int
func (self *Frame) RealStep() int 
func (self *Frame) MyUnits() []*Unit
func (self *Frame) TheirUnits() []*Unit
func (self *Frame) AllUnits() []*Unit
func (self *Frame) MyFactories() []*Factory
func (self *Frame) TheirFactories() []*Factory
func (self *Frame) AllFactories() []*Factory
func (self *Frame) FactoryByStrain(n int) *Factory
func (self *Frame) FactoryAt(xy XYer) *Factory
func (self *Frame) CanPlaceFactory() bool
func (self *Frame) PotentialSpawns() []Pos
func (self *Frame) RandomSpawn() Pos
func (self *Frame) IceAt(xy XYer) bool
func (self *Frame) OreAt(xy XYer) bool
func (self *Frame) RubbleAt(xy XYer) int
func (self *Frame) AllIce() []Pos
func (self *Frame) AllOre() []Pos
func (self *Frame) AllRubble() []Pos

func (self *Unit) BuildRequest(args ...Action)
func (self *Unit) ClearRequest()
func (self *Unit) HasRequest() bool
func (self *Unit) PowerAfterRequest() int
func (self *Unit) CanAcceptRequest() bool
func (self *Unit) IsMine() bool
func (self *Unit) NaiveTrip(other XYer) []Action

func (self *Factory) Act(action FactoryActionType)
func (self *Factory) ClearRequest()
func (self *Factory) HasRequest() bool
func (self *Factory) IsMine() bool