gofmt

[planeteer] / planeteer.go

diff --git a/planeteer.go b/planeteer.go
index d78f7795436bd9c095cebbe5ca92cdd7e94ce835..513ad1a4e7629704245c1101599fa1122f730327 100644 (file)
--- a/planeteer.go
+++ b/planeteer.go
@@ -19,7 +19,7 @@ package main
 
 import "flag"
 import "fmt"
 
 import "flag"
 import "fmt"

-import "json"
+import "encoding/json"

 import "os"
 import "runtime/pprof"
 import "strings"
 import "os"
 import "runtime/pprof"
 import "strings"


@@ -43,6 +43,8 @@ var fuel = flag.Int("fuel", 16, "Hyper Jump power left")
 
 var hold = flag.Int("hold", 300, "Size of your cargo hold")
 
 
 var hold = flag.Int("hold", 300, "Size of your cargo hold")
 

+var start_hold = flag.String("start_hold", "", "Start with a hold full of cargo")
+

 var start_edens = flag.Int("start_edens", 0,
        "How many Eden Warp Units are you starting with?")
 
 var start_edens = flag.Int("start_edens", 0,
        "How many Eden Warp Units are you starting with?")
 


@@ -63,10 +65,16 @@ var battery_price = flag.Int("battery_price", 0, "Today's Shield Battery price")
 var visit_string = flag.String("visit", "",
        "A comma-separated list of planets to make sure to visit")
 
 var visit_string = flag.String("visit", "",
        "A comma-separated list of planets to make sure to visit")
 

-var cpuprofile = flag.String("cpuprofile", "", "write cpu profile to file")
+var tomorrow_weight = flag.Float64("tomorrow_weight", 1.0,
+       "Weight for the expected value of tomorrow's trading.  0.0 - 1.0")

 
 

+var extra_stats = flag.Bool("extra_stats", true,
+       "Show additional information of possible interest")
+
+var cpuprofile = flag.String("cpuprofile", "", "write cpu profile to file")

 
 var visit_cache []string
 
 var visit_cache []string

+

 func visit() []string {
        if visit_cache == nil {
                if *visit_string == "" {
 func visit() []string {
        if visit_cache == nil {
                if *visit_string == "" {


@@ -78,6 +86,7 @@ func visit() []string {
 }
 
 var flight_plan_cache []string
 }
 
 var flight_plan_cache []string

+

 func flight_plan() []string {
        if flight_plan_cache == nil {
                if *flight_plan_string == "" {
 func flight_plan() []string {
        if flight_plan_cache == nil {
                if *flight_plan_string == "" {


@@ -89,6 +98,7 @@ func flight_plan() []string {
 }
 
 var end_cache map[string]bool
 }
 
 var end_cache map[string]bool

+

 func end() map[string]bool {
        if end_cache == nil {
                if *end_string == "" {
 func end() map[string]bool {
        if end_cache == nil {
                if *end_string == "" {


@@ -109,8 +119,9 @@ type Commodity struct {
        Limit     int
 }
 type Planet struct {
        Limit     int
 }
 type Planet struct {

-       BeaconOn bool
-       Private bool
+       BeaconOn      bool
+       Private       bool
+       TomorrowValue int

        /* Use relative prices rather than absolute prices because you
           can get relative prices without traveling to each planet. */
        RelativePrices map[string]int
        /* Use relative prices rather than absolute prices because you
           can get relative prices without traveling to each planet. */
        RelativePrices map[string]int


@@ -122,13 +133,21 @@ type planet_data struct {
        i2p, i2c    []string       // Generated; not read from file
 }
 
        i2p, i2c    []string       // Generated; not read from file
 }
 

-func ReadData() (data planet_data) {
-       f, err := os.Open(*planet_data_file)
+func json_slurp(filename string, receptacle interface{}) error {
+       f, err := os.Open(filename)

        if err != nil {
        if err != nil {

-               panic(err)
+               return err

        }
        defer f.Close()
        }
        defer f.Close()

-       err = json.NewDecoder(f).Decode(&data)
+       err = json.NewDecoder(f).Decode(receptacle)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func ReadData() (data planet_data) {
+       err := json_slurp(*planet_data_file, &data)

        if err != nil {
                panic(err)
        }
        if err != nil {
                panic(err)
        }


@@ -159,35 +178,37 @@ func ReadData() (data planet_data) {
  * independent -- some combinations are illegal and not used.  They are
  * handled as three dimensions rather than one for simplicity.  Placing
  * these dimensions first causes the unused cells in the table to be
  * independent -- some combinations are illegal and not used.  They are
  * handled as three dimensions rather than one for simplicity.  Placing
  * these dimensions first causes the unused cells in the table to be

- * grouped together in large blocks.  This keeps them from polluting
- * cache lines, and if they are large enough, allows the memory manager
- * to swap out entire pages.
+ * grouped together in large blocks.  This keeps the unused cells from
+ * polluting cache lines, and if the spans of unused cells are large
+ * enough, allows the memory manager to swap out entire pages.

  *
  * If the table gets too big to fit in RAM:
  *    * Combine the Edens, Cloaks, and UnusedCargo dimensions.  Of the
  *      24 combinations, only 15 are legal: a 38% savings.
  *
  * If the table gets too big to fit in RAM:
  *    * Combine the Edens, Cloaks, and UnusedCargo dimensions.  Of the
  *      24 combinations, only 15 are legal: a 38% savings.

- *    * Reduce the size of the Fuel dimension to 3.  We only ever look
- *      backwards 2 units, so just rotate the logical values through
- *      the same 3 physical addresses.  This is good for an 82% savings.
+ *    * Reduce the size of the Fuel dimension to 3.  Explicit iteration
+ *      only ever needs to look backwards 2 units, so the logical values
+ *      can rotate through the same 3 physical addresses.  This would be
+ *      good for an 82% savings.  Note that explicit iteration went away
+ *      in 0372f045.

  *    * Reduce the size of the Edens dimension from 3 to 2, for the
  *      same reasons as Fuel above.  33% savings.
  *    * Buy more ram.  (Just sayin'.  It's cheaper than you think.)
  *    * Reduce the size of the Edens dimension from 3 to 2, for the
  *      same reasons as Fuel above.  33% savings.
  *    * Buy more ram.  (Just sayin'.  It's cheaper than you think.)

- *      
+ *

  */
 
 // The official list of dimensions:
 const (
        // Name                Num   Size  Description
  */
 
 // The official list of dimensions:
 const (
        // Name                Num   Size  Description

-       Edens        = iota //   1      3  # of Eden warp units (0 - 2 typically)
-       Cloaks              //   2    1-2  # of Devices of Cloaking (0 or 1)
-       UnusedCargo         //   3      4  # of unused cargo spaces (0 - 3 typically)
-       Fuel                //   4     17  Hyper jump power left (0 - 16)
-       Location            //   5     26  Location (which planet)
-       Hold                //   6     15  Cargo bay contents (a *Commodity or nil)
-       Traded              //   7      2  Traded yet?
-       BuyFighters         //   8    1-2  Errand: Buy fighter drones
-       BuyShields          //   9    1-2  Errand: Buy shield batteries
-       Visit               //  10 1-2**N  Visit: Stop by these N planets in the route
+       Edens       = iota //   1      3  # of Eden warp units (0 - 2 typically)
+       Cloaks             //   2    1-2  # of Devices of Cloaking (0 or 1)
+       UnusedCargo        //   3      4  # of unused cargo spaces (0 - 3 typically)
+       Fuel               //   4     17  Hyper jump power left (0 - 16)
+       Location           //   5     26  Location (which planet)
+       Hold               //   6     15  Cargo bay contents (a *Commodity or nil)
+       Traded             //   7      2  Traded yet?
+       BuyFighters        //   8    1-2  Errand: Buy fighter drones
+       BuyShields         //   9    1-2  Errand: Buy shield batteries
+       Visit              //  10 1-2**N  Visit: Stop by these N planets in the route

 
        NumDimensions
 )
 
        NumDimensions
 )


@@ -199,13 +220,13 @@ func bint(b bool) int {
        return 0
 }
 
        return 0
 }
 

-func DimensionSizes(data planet_data) []int {
+func DimensionSizes(data planet_data) LogicalIndex {

        eden_capacity := data.Commodities["Eden Warp Units"].Limit
        if *start_edens > eden_capacity {
                eden_capacity = *start_edens
        }
        cloak_capacity := bint(*cloak)
        eden_capacity := data.Commodities["Eden Warp Units"].Limit
        if *start_edens > eden_capacity {
                eden_capacity = *start_edens
        }
        cloak_capacity := bint(*cloak)

-       dims := make([]int, NumDimensions)
+       dims := make(LogicalIndex, NumDimensions)

        dims[Edens] = eden_capacity + 1
        dims[Cloaks] = cloak_capacity + 1
        dims[UnusedCargo] = eden_capacity + cloak_capacity + 1
        dims[Edens] = eden_capacity + 1
        dims[Cloaks] = cloak_capacity + 1
        dims[UnusedCargo] = eden_capacity + cloak_capacity + 1


@@ -226,7 +247,11 @@ func DimensionSizes(data planet_data) []int {
        return dims
 }
 
        return dims
 }
 

-func StateTableSize(dims []int) int {
+type Value int32
+type PhysicalIndex int32
+type LogicalIndex []int
+
+func StateTableSize(dims LogicalIndex) int {

        product := 1
        for _, size := range dims {
                product *= size
        product := 1
        for _, size := range dims {
                product *= size


@@ -235,14 +260,19 @@ func StateTableSize(dims []int) int {
 }
 
 type State struct {
 }
 
 type State struct {

-       value, from int32
+       value Value
+       from  PhysicalIndex

 }
 
 }
 

-const CELL_UNINITIALIZED =   -2147483647
-const CELL_BEING_EVALUATED = -2147483646
-const CELL_RUBISH =          -2147483645
+const (
+       FROM_ROOT = -2147483647 + iota
+       FROM_UNINITIALIZED
+       VALUE_UNINITIALIZED
+       VALUE_BEING_EVALUATED
+       VALUE_RUBISH
+)

 
 

-func EncodeIndex(dims, addr []int) int32 {
+func EncodeIndex(dims, addr LogicalIndex) PhysicalIndex {

        index := addr[0]
        if addr[0] > dims[0] {
                panic(0)
        index := addr[0]
        if addr[0] > dims[0] {
                panic(0)


@@ -253,31 +283,53 @@ func EncodeIndex(dims, addr []int) int32 {
                }
                index = index*dims[i] + addr[i]
        }
                }
                index = index*dims[i] + addr[i]
        }

-       return int32(index)
+       return PhysicalIndex(index)

 }
 
 }
 

-func DecodeIndex(dims []int, index int32) []int {
-       addr := make([]int, NumDimensions)
+func DecodeIndex(dims LogicalIndex, index PhysicalIndex) LogicalIndex {
+       scratch := int(index)
+       addr := make(LogicalIndex, NumDimensions)

        for i := NumDimensions - 1; i > 0; i-- {
        for i := NumDimensions - 1; i > 0; i-- {

-               addr[i] = int(index) % dims[i]
-               index /= int32(dims[i])
+               addr[i] = scratch % dims[i]
+               scratch /= dims[i]

        }
        }

-       addr[0] = int(index)
+       addr[0] = scratch

        return addr
 }
 
        return addr
 }
 

-func CreateStateTable(data planet_data, dims []int) []State {
+func PlanetIndex(data planet_data, name string) int {
+       index, ok := data.p2i[name]
+       if !ok {
+               panic("Unknown planet " + name)
+       }
+       return index
+}
+
+func CommodityIndex(data planet_data, name string) int {
+       index, ok := data.c2i[name]
+       if !ok {
+               panic("Unknown commodity " + name)
+       }
+       return index
+}
+
+func CreateStateTable(data planet_data, dims LogicalIndex) []State {

        table := make([]State, StateTableSize(dims))
        for i := range table {
        table := make([]State, StateTableSize(dims))
        for i := range table {

-               table[i].value = CELL_UNINITIALIZED
+               table[i].value = VALUE_UNINITIALIZED
+               table[i].from = FROM_UNINITIALIZED

        }
 
        }
 

-       addr := make([]int, NumDimensions)
+       addr := make(LogicalIndex, NumDimensions)

        addr[Fuel] = *fuel
        addr[Edens] = *start_edens
        addr[Fuel] = *fuel
        addr[Edens] = *start_edens

-       addr[Location] = data.p2i[*start]
-       addr[Traded] = 1
-       table[EncodeIndex(dims, addr)].value = int32(*funds)
+       addr[Location] = PlanetIndex(data, *start)
+       if *start_hold != "" {
+               addr[Hold] = CommodityIndex(data, *start_hold)
+       }
+       start_index := EncodeIndex(dims, addr)
+       table[start_index].value = Value(*funds)
+       table[start_index].from = FROM_ROOT

 
        return table
 }
 
        return table
 }


@@ -285,13 +337,13 @@ func CreateStateTable(data planet_data, dims []int) []State {
 /* CellValue fills in the one cell at address addr by looking at all
  * the possible ways to reach this cell and selecting the best one. */
 
 /* CellValue fills in the one cell at address addr by looking at all
  * the possible ways to reach this cell and selecting the best one. */
 

-func Consider(data planet_data, dims []int, table []State, there []int, value_difference int, best_value *int32, best_source []int) {
+func Consider(data planet_data, dims LogicalIndex, table []State, there LogicalIndex, value_difference int, best_value *Value, best_source LogicalIndex) {

        there_value := CellValue(data, dims, table, there)
        there_value := CellValue(data, dims, table, there)

-       if value_difference < 0 && int32(-value_difference) > there_value {
+       if value_difference < 0 && Value(-value_difference) > there_value {

                /* Can't afford this transition */
                return
        }
                /* Can't afford this transition */
                return
        }

-       possible_value := there_value + int32(value_difference)
+       possible_value := there_value + Value(value_difference)

        if possible_value > *best_value {
                *best_value = possible_value
                copy(best_source, there)
        if possible_value > *best_value {
                *best_value = possible_value
                copy(best_source, there)


@@ -299,19 +351,20 @@ func Consider(data planet_data, dims []int, table []State, there []int, value_di
 }
 
 var cell_filled_count int
 }
 
 var cell_filled_count int

-func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
+
+func CellValue(data planet_data, dims LogicalIndex, table []State, addr LogicalIndex) Value {

        my_index := EncodeIndex(dims, addr)
        my_index := EncodeIndex(dims, addr)

-       if table[my_index].value == CELL_BEING_EVALUATED {
+       if table[my_index].value == VALUE_BEING_EVALUATED {

                panic("Circular dependency")
        }
                panic("Circular dependency")
        }

-       if table[my_index].value != CELL_UNINITIALIZED {
+       if table[my_index].value != VALUE_UNINITIALIZED {

                return table[my_index].value
        }
                return table[my_index].value
        }

-       table[my_index].value = CELL_BEING_EVALUATED
+       table[my_index].value = VALUE_BEING_EVALUATED

 
 

-       best_value := int32(CELL_RUBISH)
-       best_source := make([]int, NumDimensions)
-       other := make([]int, NumDimensions)
+       best_value := Value(VALUE_RUBISH)
+       best_source := make(LogicalIndex, NumDimensions)
+       other := make(LogicalIndex, NumDimensions)

        copy(other, addr)
        planet := data.i2p[addr[Location]]
 
        copy(other, addr)
        planet := data.i2p[addr[Location]]
 


@@ -320,14 +373,12 @@ func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
                other[Traded] = 1 /* Travel from states that have done trading. */
 
                /* Travel here via a 2-fuel unit jump */
                other[Traded] = 1 /* Travel from states that have done trading. */
 
                /* Travel here via a 2-fuel unit jump */

-               if addr[Fuel]+2 < dims[Fuel] {
+               if data.Planets[data.i2p[addr[Location]]].BeaconOn && addr[Fuel]+2 < dims[Fuel] {

                        other[Fuel] = addr[Fuel] + 2
                        hole_index := (dims[Fuel] - 1) - (addr[Fuel] + 2)
                        other[Fuel] = addr[Fuel] + 2
                        hole_index := (dims[Fuel] - 1) - (addr[Fuel] + 2)

-                       if hole_index >= len(flight_plan()) || addr[Location] != data.p2i[flight_plan()[hole_index]] {
+                       if hole_index >= len(flight_plan()) || addr[Location] != PlanetIndex(data, flight_plan()[hole_index]) {

                                for other[Location] = 0; other[Location] < dims[Location]; other[Location]++ {
                                for other[Location] = 0; other[Location] < dims[Location]; other[Location]++ {

-                                       if data.Planets[data.i2p[addr[Location]]].BeaconOn {
-                                               Consider(data, dims, table, other, 0, &best_value, best_source)
-                                       }
+                                       Consider(data, dims, table, other, 0, &best_value, best_source)

                                }
                        }
                        other[Location] = addr[Location]
                                }
                        }
                        other[Location] = addr[Location]


@@ -337,7 +388,7 @@ func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
                /* Travel here via a 1-fuel unit jump (a hyper hole) */
                if addr[Fuel]+1 < dims[Fuel] {
                        hole_index := (dims[Fuel] - 1) - (addr[Fuel] + 1)
                /* Travel here via a 1-fuel unit jump (a hyper hole) */
                if addr[Fuel]+1 < dims[Fuel] {
                        hole_index := (dims[Fuel] - 1) - (addr[Fuel] + 1)

-                       if hole_index < len(flight_plan()) && addr[Location] == data.p2i[flight_plan()[hole_index]] {
+                       if hole_index < len(flight_plan()) && addr[Location] == PlanetIndex(data, flight_plan()[hole_index]) {

                                other[Fuel] = addr[Fuel] + 1
                                for other[Location] = 0; other[Location] < dims[Location]; other[Location]++ {
                                        Consider(data, dims, table, other, 0, &best_value, best_source)
                                other[Fuel] = addr[Fuel] + 1
                                for other[Location] = 0; other[Location] < dims[Location]; other[Location]++ {
                                        Consider(data, dims, table, other, 0, &best_value, best_source)


@@ -348,7 +399,7 @@ func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
                }
 
                /* Travel here via Eden Warp Unit */
                }
 
                /* Travel here via Eden Warp Unit */

-               if addr[Edens]+1 < dims[Edens] && addr[UnusedCargo] > 1 {
+               if addr[Edens]+1 < dims[Edens] && (addr[Hold] == 0 || addr[UnusedCargo] > 0) {

                        _, available := data.Planets[data.i2p[addr[Location]]].RelativePrices["Eden Warp Units"]
                        if !available {
                                other[Edens] = addr[Edens] + 1
                        _, available := data.Planets[data.i2p[addr[Location]]].RelativePrices["Eden Warp Units"]
                        if !available {
                                other[Edens] = addr[Edens] + 1


@@ -421,6 +472,7 @@ func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
                                }
                        }
                }
                                }
                        }
                }

+               other[Traded] = addr[Traded]

        }
 
        /* Buy a Device of Cloaking */
        }
 
        /* Buy a Device of Cloaking */


@@ -444,7 +496,7 @@ func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
                if available {
                        absolute_price := int(float64(data.Commodities["Fighter Drones"].BasePrice) * float64(relative_price) / 100.0)
                        other[BuyFighters] = 0
                if available {
                        absolute_price := int(float64(data.Commodities["Fighter Drones"].BasePrice) * float64(relative_price) / 100.0)
                        other[BuyFighters] = 0

-                       Consider(data, dims, table, other, -absolute_price * *drones, &best_value, best_source)
+                       Consider(data, dims, table, other, -absolute_price**drones, &best_value, best_source)

                        other[BuyFighters] = addr[BuyFighters]
                }
        }
                        other[BuyFighters] = addr[BuyFighters]
                }
        }


@@ -455,15 +507,14 @@ func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
                if available {
                        absolute_price := int(float64(data.Commodities["Shield Batterys"].BasePrice) * float64(relative_price) / 100.0)
                        other[BuyShields] = 0
                if available {
                        absolute_price := int(float64(data.Commodities["Shield Batterys"].BasePrice) * float64(relative_price) / 100.0)
                        other[BuyShields] = 0

-                       Consider(data, dims, table, other, -absolute_price * *batteries, &best_value, best_source)
+                       Consider(data, dims, table, other, -absolute_price**batteries, &best_value, best_source)

                        other[BuyShields] = addr[BuyShields]
                }
        }
 
        /* Visit this planet */
                        other[BuyShields] = addr[BuyShields]
                }
        }
 
        /* Visit this planet */

-       var i uint
-       for i = 0; i < uint(len(visit())); i++ {
-               if addr[Visit] & (1 << i) != 0 && visit()[i] == data.i2p[addr[Location]] {
+       for i := uint(0); i < uint(len(visit())); i++ {
+               if addr[Visit]&(1<<i) != 0 && visit()[i] == data.i2p[addr[Location]] {

                        other[Visit] = addr[Visit] & ^(1 << i)
                        Consider(data, dims, table, other, 0, &best_value, best_source)
                }
                        other[Visit] = addr[Visit] & ^(1 << i)
                        Consider(data, dims, table, other, 0, &best_value, best_source)
                }


@@ -482,7 +533,7 @@ func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
                                        other[UnusedCargo] = addr[UnusedCargo] + quantity
                                }
                                if other[UnusedCargo] < dims[UnusedCargo] {
                                        other[UnusedCargo] = addr[UnusedCargo] + quantity
                                }
                                if other[UnusedCargo] < dims[UnusedCargo] {

-                                       Consider(data, dims, table, other, -absolute_price * quantity, &best_value, best_source)
+                                       Consider(data, dims, table, other, -absolute_price*quantity, &best_value, best_source)

                                }
                        }
                        other[Edens] = addr[Edens]
                                }
                        }
                        other[Edens] = addr[Edens]


@@ -499,7 +550,7 @@ func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
 
        // Sanity check: This cell was in state BEING_EVALUATED
        // the whole time that it was being evaluated.
 
        // Sanity check: This cell was in state BEING_EVALUATED
        // the whole time that it was being evaluated.

-       if table[my_index].value != CELL_BEING_EVALUATED {
+       if table[my_index].value != VALUE_BEING_EVALUATED {

                panic(my_index)
        }
 
                panic(my_index)
        }
 


@@ -508,16 +559,16 @@ func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
        table[my_index].from = EncodeIndex(dims, best_source)
 
        // UI: Progress bar
        table[my_index].from = EncodeIndex(dims, best_source)
 
        // UI: Progress bar

-       cell_filled_count ++
-       if cell_filled_count & 0xff == 0 {
+       cell_filled_count++
+       if cell_filled_count&0xfff == 0 {

                print(fmt.Sprintf("\r%3.1f%%", 100*float64(cell_filled_count)/float64(StateTableSize(dims))))
        }
 
        return table[my_index].value
 }
 
                print(fmt.Sprintf("\r%3.1f%%", 100*float64(cell_filled_count)/float64(StateTableSize(dims))))
        }
 
        return table[my_index].value
 }
 

-func FindBestState(data planet_data, dims []int, table []State) int32 {
-       addr := make([]int, NumDimensions)
+func FinalState(dims LogicalIndex) LogicalIndex {
+       addr := make(LogicalIndex, NumDimensions)

        addr[Edens] = *end_edens
        addr[Cloaks] = dims[Cloaks] - 1
        addr[BuyFighters] = dims[BuyFighters] - 1
        addr[Edens] = *end_edens
        addr[Cloaks] = dims[Cloaks] - 1
        addr[BuyFighters] = dims[BuyFighters] - 1


@@ -526,17 +577,25 @@ func FindBestState(data planet_data, dims []int, table []State) int32 {
        addr[Traded] = 1
        addr[Hold] = 0
        addr[UnusedCargo] = 0
        addr[Traded] = 1
        addr[Hold] = 0
        addr[UnusedCargo] = 0

-       max_index := int32(-1)
-       max_value := int32(0)
+       // Fuel and Location are determined by FindBestState
+       return addr
+}
+
+func FindBestState(data planet_data, dims LogicalIndex, table []State, addr LogicalIndex) PhysicalIndex {
+       max_index := PhysicalIndex(-1)
+       max_value := 0.0

        max_fuel := 1
        if *fuel == 0 {
                max_fuel = 0
        }
        for addr[Fuel] = 0; addr[Fuel] <= max_fuel; addr[Fuel]++ {
                for addr[Location] = 0; addr[Location] < dims[Location]; addr[Location]++ {
        max_fuel := 1
        if *fuel == 0 {
                max_fuel = 0
        }
        for addr[Fuel] = 0; addr[Fuel] <= max_fuel; addr[Fuel]++ {
                for addr[Location] = 0; addr[Location] < dims[Location]; addr[Location]++ {

-                       if len(end()) == 0 || end()[data.i2p[addr[Location]]] {
+                       planet := data.i2p[addr[Location]]
+                       if len(end()) == 0 || end()[planet] {

                                index := EncodeIndex(dims, addr)
                                index := EncodeIndex(dims, addr)

-                               value := CellValue(data, dims, table, addr)
+                               today_value := CellValue(data, dims, table, addr)
+                               tomorrow_value := *tomorrow_weight * float64(*hold+data.Planets[planet].TomorrowValue)
+                               value := float64(today_value) + tomorrow_value

                                if value > max_value {
                                        max_value = value
                                        max_index = index
                                if value > max_value {
                                        max_value = value
                                        max_index = index


@@ -547,7 +606,10 @@ func FindBestState(data planet_data, dims []int, table []State) int32 {
        return max_index
 }
 
        return max_index
 }
 

-func Commas(n int32) (s string) {
+func Commas(n Value) (s string) {
+       if n < 0 {
+               panic(n)
+       }

        r := n % 1000
        n /= 1000
        for n > 0 {
        r := n % 1000
        n /= 1000
        for n > 0 {


@@ -559,8 +621,78 @@ func Commas(n int32) (s string) {
        return
 }
 
        return
 }
 

-func DescribePath(data planet_data, dims []int, table []State, start int32) (description []string) {
-       for index := start; index > 0 && table[index].from > 0; index = table[index].from {
+func FighterAndShieldCost(data planet_data, dims LogicalIndex, table []State, best PhysicalIndex) {
+       if *drones == 0 && *batteries == 0 {
+               return
+       }
+       fmt.Println()
+       if *drones > 0 {
+               final_state := FinalState(dims)
+               final_state[BuyFighters] = 0
+               alt_best := FindBestState(data, dims, table, final_state)
+               cost := table[alt_best].value - table[best].value
+               fmt.Printf("\rDrones were %.2f each\n", float64(cost)/float64(*drones))
+       }
+       if *batteries > 0 {
+               final_state := FinalState(dims)
+               final_state[BuyShields] = 0
+               alt_best := FindBestState(data, dims, table, final_state)
+               cost := table[alt_best].value - table[best].value
+               fmt.Printf("\rBatteries were %.2f each\n", float64(cost)/float64(*batteries))
+       }
+}
+
+func EndEdensCost(data planet_data, dims LogicalIndex, table []State, best PhysicalIndex) {
+       if *end_edens == 0 {
+               return
+       }
+       fmt.Println()
+       final_state := FinalState(dims)
+       for extra_edens := 1; extra_edens <= *end_edens; extra_edens++ {
+               final_state[Edens] = *end_edens - extra_edens
+               alt_best := FindBestState(data, dims, table, final_state)
+               extra_funds := table[alt_best].value - table[best].value
+               fmt.Println("\rUse", extra_edens, "extra edens, make an extra",
+                       Commas(extra_funds), "(",
+                       Commas(extra_funds/Value(extra_edens)), "per eden)")
+       }
+}
+
+func VisitCost(data planet_data, dims LogicalIndex, table []State, best PhysicalIndex) {
+       if dims[Visit] == 1 {
+               return
+       }
+       fmt.Println()
+       final_state := FinalState(dims)
+       for i := uint(0); i < uint(len(visit())); i++ {
+               all_bits := dims[Visit] - 1
+               final_state[Visit] = all_bits & ^(1 << i)
+               alt_best := FindBestState(data, dims, table, final_state)
+               cost := table[alt_best].value - table[best].value
+               fmt.Printf("\r%11v Cost to visit %v\n", Commas(cost), visit()[i])
+       }
+}
+
+func EndLocationCost(data planet_data, dims LogicalIndex, table []State, best PhysicalIndex) {
+       if len(end()) == 0 {
+               return
+       }
+       fmt.Println()
+       final_state := FinalState(dims)
+       save_end_string := *end_string
+       *end_string = ""
+       end_cache = nil
+       alt_best := FindBestState(data, dims, table, final_state)
+       cost := table[alt_best].value - table[best].value
+       fmt.Printf("\r%11v Cost of --end %v\n", Commas(cost), save_end_string)
+       *end_string = save_end_string
+}
+
+func DescribePath(data planet_data, dims LogicalIndex, table []State, start PhysicalIndex) (description []string) {
+       for index := start; table[index].from > FROM_ROOT; index = table[index].from {
+               if table[index].from == FROM_UNINITIALIZED {
+                       panic(index)
+               }

                var line string
                addr := DecodeIndex(dims, index)
                prev := DecodeIndex(dims, table[index].from)
                var line string
                addr := DecodeIndex(dims, index)
                prev := DecodeIndex(dims, table[index].from)


@@ -569,7 +701,7 @@ func DescribePath(data planet_data, dims []int, table []State, start int32) (des
                        to := data.i2p[addr[Location]]
                        line += fmt.Sprintf("Jump from %v to %v (%v hyper jump units)", from, to, prev[Fuel]-addr[Fuel])
                }
                        to := data.i2p[addr[Location]]
                        line += fmt.Sprintf("Jump from %v to %v (%v hyper jump units)", from, to, prev[Fuel]-addr[Fuel])
                }

-               if addr[Edens] == prev[Edens] - 1 {
+               if addr[Edens] == prev[Edens]-1 {

                        from := data.i2p[prev[Location]]
                        to := data.i2p[addr[Location]]
                        line += fmt.Sprintf("Eden warp from %v to %v", from, to)
                        from := data.i2p[prev[Location]]
                        to := data.i2p[addr[Location]]
                        line += fmt.Sprintf("Eden warp from %v to %v", from, to)


@@ -591,7 +723,7 @@ func DescribePath(data planet_data, dims []int, table []State, start int32) (des
                        line += "Buy a Cloak"
                }
                if addr[Edens] > prev[Edens] {
                        line += "Buy a Cloak"
                }
                if addr[Edens] > prev[Edens] {

-                       line += fmt.Sprint("Buy ", addr[Edens] - prev[Edens], " Eden Warp Units")
+                       line += fmt.Sprint("Buy ", addr[Edens]-prev[Edens], " Eden Warp Units")

                }
                if addr[BuyShields] == 1 && prev[BuyShields] == 0 {
                        line += fmt.Sprint("Buy ", *batteries, " Shield Batterys")
                }
                if addr[BuyShields] == 1 && prev[BuyShields] == 0 {
                        line += fmt.Sprint("Buy ", *batteries, " Shield Batterys")


@@ -611,7 +743,7 @@ func DescribePath(data planet_data, dims []int, table []State, start int32) (des
                if line == "" {
                        line = fmt.Sprint(prev, " -> ", addr)
                }
                if line == "" {
                        line = fmt.Sprint(prev, " -> ", addr)
                }

-               description = append(description, fmt.Sprintf("%13v ", Commas(table[index].value)) + line)
+               description = append(description, fmt.Sprintf("%13v ", Commas(table[index].value))+line)

        }
        return
 }
        }
        return
 }


@@ -642,6 +774,10 @@ func IndexCommodities(m *map[string]Commodity, start_at int) (map[string]int, []
 
 func main() {
        flag.Parse()
 
 func main() {
        flag.Parse()

+       if *start == "" || *funds == 0 {
+               print("--start and --funds are required.  --help for more\n")
+               return
+       }

        if *cpuprofile != "" {
                f, err := os.Create(*cpuprofile)
                if err != nil {
        if *cpuprofile != "" {
                f, err := os.Create(*cpuprofile)
                if err != nil {


@@ -665,14 +801,22 @@ func main() {
        data.c2i, data.i2c = IndexCommodities(&data.Commodities, 1)
        dims := DimensionSizes(data)
        table := CreateStateTable(data, dims)
        data.c2i, data.i2c = IndexCommodities(&data.Commodities, 1)
        dims := DimensionSizes(data)
        table := CreateStateTable(data, dims)

-       best := FindBestState(data, dims, table)
+       final_state := FinalState(dims)
+       best := FindBestState(data, dims, table, final_state)

        print("\n")
        if best == -1 {
        print("\n")
        if best == -1 {

-               print("Cannot acheive success criteria\n")
-       } else {
-               description := DescribePath(data, dims, table, best)
-               for i := len(description) - 1; i >= 0; i-- {
-                       fmt.Println(description[i])
-               }
+               print("Cannot achieve success criteria\n")
+               return
+       }
+       description := DescribePath(data, dims, table, best)
+       for i := len(description) - 1; i >= 0; i-- {
+               fmt.Println(description[i])
+       }
+
+       if *extra_stats {
+               FighterAndShieldCost(data, dims, table, best)
+               EndEdensCost(data, dims, table, best)
+               VisitCost(data, dims, table, best)
+               EndLocationCost(data, dims, table, best)

        }
 }
        }
 }