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() (data planet_data) {
+ err := json_slurp(*planet_data_file, &data)
if err != nil {
panic(err)
}
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)
- 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
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
return product
}
-type Value int32
-type PhysicalIndex int32
-
type State struct {
value Value
from PhysicalIndex
VALUE_RUBISH
)
-func EncodeIndex(dims, addr []int) PhysicalIndex {
+func EncodeIndex(dims, addr LogicalIndex) PhysicalIndex {
index := addr[0]
if addr[0] > dims[0] {
panic(0)
return PhysicalIndex(index)
}
-func DecodeIndex(dims []int, index PhysicalIndex) []int {
+func DecodeIndex(dims LogicalIndex, index PhysicalIndex) LogicalIndex {
scratch := int(index)
- addr := make([]int, NumDimensions)
+ addr := make(LogicalIndex, NumDimensions)
for i := NumDimensions - 1; i > 0; i-- {
addr[i] = scratch % dims[i]
scratch /= dims[i]
return addr
}
-func CreateStateTable(data planet_data, dims []int) []State {
+func CreateStateTable(data planet_data, dims LogicalIndex) []State {
table := make([]State, StateTableSize(dims))
for i := range table {
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[Location] = data.p2i[*start]
/* 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 *Value, 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)
if value_difference < 0 && Value(-value_difference) > there_value {
/* Can't afford this transition */
var cell_filled_count int
-func CellValue(data planet_data, dims []int, table []State, addr []int) Value {
+func CellValue(data planet_data, dims LogicalIndex, table []State, addr LogicalIndex) Value {
my_index := EncodeIndex(dims, addr)
if table[my_index].value == VALUE_BEING_EVALUATED {
panic("Circular dependency")
table[my_index].value = VALUE_BEING_EVALUATED
best_value := Value(VALUE_RUBISH)
- best_source := make([]int, NumDimensions)
- other := make([]int, NumDimensions)
+ best_source := make(LogicalIndex, NumDimensions)
+ other := make(LogicalIndex, NumDimensions)
copy(other, addr)
planet := data.i2p[addr[Location]]
return table[my_index].value
}
-func FinalState(dims []int) []int {
- 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
return addr
}
-func FindBestState(data planet_data, dims []int, table []State, addr []int) PhysicalIndex {
+func FindBestState(data planet_data, dims LogicalIndex, table []State, addr LogicalIndex) PhysicalIndex {
max_index := PhysicalIndex(-1)
max_value := 0.0
max_fuel := 1
return
}
-func FighterAndShieldCost(data planet_data, dims []int, table []State, best PhysicalIndex) {
+func FighterAndShieldCost(data planet_data, dims LogicalIndex, table []State, best PhysicalIndex) {
if *drones == 0 && *batteries == 0 {
return
}
}
}
-func EndEdensCost(data planet_data, dims []int, table []State, best PhysicalIndex) {
+func EndEdensCost(data planet_data, dims LogicalIndex, table []State, best PhysicalIndex) {
if *end_edens == 0 {
return
}
}
}
-func VisitCost(data planet_data, dims []int, table []State, best PhysicalIndex) {
+func VisitCost(data planet_data, dims LogicalIndex, table []State, best PhysicalIndex) {
if dims[Visit] == 1 {
return
}
}
}
-func EndLocationCost(data planet_data, dims []int, table []State, best PhysicalIndex) {
+func EndLocationCost(data planet_data, dims LogicalIndex, table []State, best PhysicalIndex) {
if len(end()) == 0 {
return
}
*end_string = save_end_string
}
-func DescribePath(data planet_data, dims []int, table []State, start PhysicalIndex) (description []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)
projects / planeteer / blobdiff