X-Git-Url: http://git.scottworley.com/planeteer/blobdiff_plain/dd6c757dacbc44d4edb6ed5de319ef124ff75d4f..3cd35cb0f41da9be4e12057441145bf5d5a8f5c4:/planeteer.go

diff --git a/planeteer.go b/planeteer.go
index 71a85dc..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
@@ -146,12 +145,13 @@ func json_slurp(filename string, receptacle interface{}) error {
 	return nil
 }
 
-func ReadData() (data planet_data) {
+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
@@ -193,7 +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:
@@ -325,7 +325,7 @@ func CreateStateTable(data planet_data, dims LogicalIndex) []State {
 	addr[Edens] = *start_edens
 	addr[Location] = PlanetIndex(data, *start)
 	if *start_hold != "" {
-		addr[Hold] = CommodityIndex(data,*start_hold)
+		addr[Hold] = CommodityIndex(data, *start_hold)
 	}
 	start_index := EncodeIndex(dims, addr)
 	table[start_index].value = Value(*funds)
@@ -373,14 +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] != 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]
@@ -401,7 +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
@@ -608,7 +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)
 	}
@@ -620,7 +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) {
@@ -633,14 +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))
 	}
 }
 
@@ -690,7 +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)
@@ -747,7 +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)
@@ -807,7 +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)