X-Git-Url: http://git.scottworley.com/planeteer/blobdiff_plain/a29aebecc25a3b2c40c86f11818d79e367b5ce30..HEAD:/planeteer.go diff --git a/planeteer.go b/planeteer.go index eb78bce..cf00d56 100644 --- a/planeteer.go +++ b/planeteer.go @@ -3,8 +3,7 @@ * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as - * published by the Free Software Foundation, either version 3 of the - * License, or (at your option) any later version. + * published by the Free Software Foundation, version 3. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -133,17 +132,26 @@ type planet_data struct { 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 { - panic(err) + return err } defer f.Close() - err = json.NewDecoder(f).Decode(&data) + err = json.NewDecoder(f).Decode(receptacle) + if err != nil { + return err + } + return nil +} + +func ReadData() planet_data { + var data planet_data + err := json_slurp(*planet_data_file, &data) if err != nil { panic(err) } - return + return data } /* This program operates by filling in a state table representing the best @@ -185,7 +193,7 @@ func ReadData() (data planet_data) { * * 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: @@ -289,6 +297,22 @@ func DecodeIndex(dims LogicalIndex, index PhysicalIndex) LogicalIndex { return addr } +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 { @@ -299,9 +323,9 @@ func CreateStateTable(data planet_data, dims LogicalIndex) []State { addr := make(LogicalIndex, NumDimensions) addr[Fuel] = *fuel addr[Edens] = *start_edens - addr[Location] = data.p2i[*start] + addr[Location] = PlanetIndex(data, *start) if *start_hold != "" { - addr[Hold] = data.c2i[*start_hold] + addr[Hold] = CommodityIndex(data, *start_hold) } start_index := EncodeIndex(dims, addr) table[start_index].value = Value(*funds) @@ -349,14 +373,12 @@ func CellValue(data planet_data, dims LogicalIndex, table []State, addr LogicalI 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) - 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]++ { - 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] @@ -366,7 +388,7 @@ func CellValue(data planet_data, dims LogicalIndex, table []State, addr LogicalI /* 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) @@ -377,7 +399,7 @@ func CellValue(data planet_data, dims LogicalIndex, table []State, addr LogicalI } /* Travel here via Eden Warp Unit */ - if addr[Edens]+1 < dims[Edens] && addr[UnusedCargo] > 0 { + 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 @@ -584,7 +606,8 @@ func FindBestState(data planet_data, dims LogicalIndex, table []State, addr Logi return max_index } -func Commas(n Value) (s string) { +func Commas(n Value) string { + var s string if n < 0 { panic(n) } @@ -596,7 +619,7 @@ func Commas(n Value) (s string) { n /= 1000 } s = fmt.Sprint(r) + s - return + return s } func FighterAndShieldCost(data planet_data, dims LogicalIndex, table []State, best PhysicalIndex) { @@ -609,14 +632,14 @@ func FighterAndShieldCost(data planet_data, dims LogicalIndex, table []State, be final_state[BuyFighters] = 0 alt_best := FindBestState(data, dims, table, final_state) cost := table[alt_best].value - table[best].value - fmt.Println("\rDrones were", float64(cost)/float64(*drones), "each") + 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.Println("\rBatteries were", float64(cost)/float64(*batteries), "each") + fmt.Printf("\rBatteries were %.2f each\n", float64(cost)/float64(*batteries)) } } @@ -666,7 +689,8 @@ func EndLocationCost(data planet_data, dims LogicalIndex, table []State, best Ph *end_string = save_end_string } -func DescribePath(data planet_data, dims LogicalIndex, table []State, start PhysicalIndex) (description []string) { +func DescribePath(data planet_data, dims LogicalIndex, table []State, start PhysicalIndex) []string { + var description []string for index := start; table[index].from > FROM_ROOT; index = table[index].from { if table[index].from == FROM_UNINITIALIZED { panic(index) @@ -723,7 +747,7 @@ func DescribePath(data planet_data, dims LogicalIndex, table []State, start Phys } description = append(description, fmt.Sprintf("%13v ", Commas(table[index].value))+line) } - return + return description } // (Example of a use case for generics in Go) @@ -783,7 +807,7 @@ func main() { best := FindBestState(data, dims, table, final_state) print("\n") if best == -1 { - print("Cannot acheive success criteria\n") + print("Cannot achieve success criteria\n") return } description := DescribePath(data, dims, table, best)