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1 /* Planeteer: Give trade route advice for Planets: The Exploration of Space
2 * Copyright (C) 2011 Scott Worley <sworley@chkno.net>
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU Affero General Public License as
6 * published by the Free Software Foundation, either version 3 of the
7 * License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU Affero General Public License for more details.
13 *
14 * You should have received a copy of the GNU Affero General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 package main
19
20 import "flag"
21 import "fmt"
22 import "json"
23 import "os"
24 import "runtime/pprof"
25 import "strings"
26
27 var funds = flag.Int("funds", 0,
28 "Starting funds")
29
30 var start = flag.String("start", "",
31 "The planet to start at")
32
33 var flight_plan_string = flag.String("flight_plan", "",
34 "Your hyper-holes for the day, comma-separated.")
35
36 var end_string = flag.String("end", "",
37 "A comma-separated list of acceptable ending planets.")
38
39 var planet_data_file = flag.String("planet_data_file", "planet-data",
40 "The file to read planet data from")
41
42 var fuel = flag.Int("fuel", 16, "Hyper Jump power left")
43
44 var hold = flag.Int("hold", 300, "Size of your cargo hold")
45
46 var start_edens = flag.Int("start_edens", 0,
47 "How many Eden Warp Units are you starting with?")
48
49 var end_edens = flag.Int("end_edens", 0,
50 "How many Eden Warp Units would you like to keep (not use)?")
51
52 var cloak = flag.Bool("cloak", false,
53 "Make sure to end with a Device of Cloaking")
54
55 var drones = flag.Int("drones", 0, "Buy this many Fighter Drones")
56
57 var batteries = flag.Int("batteries", 0, "Buy this many Shield Batterys")
58
59 var drone_price = flag.Int("drone_price", 0, "Today's Fighter Drone price")
60
61 var battery_price = flag.Int("battery_price", 0, "Today's Shield Battery price")
62
63 var visit_string = flag.String("visit", "",
64 "A comma-separated list of planets to make sure to visit")
65
66 var cpuprofile = flag.String("cpuprofile", "", "write cpu profile to file")
67
68 var visit_cache []string
69
70 func visit() []string {
71 if visit_cache == nil {
72 if *visit_string == "" {
73 return nil
74 }
75 visit_cache = strings.Split(*visit_string, ",")
76 }
77 return visit_cache
78 }
79
80 var flight_plan_cache []string
81
82 func flight_plan() []string {
83 if flight_plan_cache == nil {
84 if *flight_plan_string == "" {
85 return nil
86 }
87 flight_plan_cache = strings.Split(*flight_plan_string, ",")
88 }
89 return flight_plan_cache
90 }
91
92 var end_cache map[string]bool
93
94 func end() map[string]bool {
95 if end_cache == nil {
96 if *end_string == "" {
97 return nil
98 }
99 m := make(map[string]bool)
100 for _, p := range strings.Split(*end_string, ",") {
101 m[p] = true
102 }
103 end_cache = m
104 }
105 return end_cache
106 }
107
108 type Commodity struct {
109 BasePrice int
110 CanSell bool
111 Limit int
112 }
113 type Planet struct {
114 BeaconOn bool
115 Private bool
116 /* Use relative prices rather than absolute prices because you
117 can get relative prices without traveling to each planet. */
118 RelativePrices map[string]int
119 }
120 type planet_data struct {
121 Commodities map[string]Commodity
122 Planets map[string]Planet
123 p2i, c2i map[string]int // Generated; not read from file
124 i2p, i2c []string // Generated; not read from file
125 }
126
127 func ReadData() (data planet_data) {
128 f, err := os.Open(*planet_data_file)
129 if err != nil {
130 panic(err)
131 }
132 defer f.Close()
133 err = json.NewDecoder(f).Decode(&data)
134 if err != nil {
135 panic(err)
136 }
137 return
138 }
139
140 /* This program operates by filling in a state table representing the best
141 * possible trips you could make; the ones that makes you the most money.
142 * This is feasible because we don't look at all the possible trips.
143 * We define a list of things that are germane to this game and then only
144 * consider the best outcome in each possible game state.
145 *
146 * Each cell in the table represents a state in the game. In each cell,
147 * we track two things: 1. the most money you could possibly have while in
148 * that state and 2. one possible way to get into that state with that
149 * amount of money.
150 *
151 * A basic analysis can be done with a two-dimensional table: location and
152 * fuel. planeteer-1.0 used this two-dimensional table. This version
153 * adds features mostly by adding dimensions to this table.
154 *
155 * Note that the sizes of each dimension are data driven. Many dimensions
156 * collapse to one possible value (ie, disappear) if the corresponding
157 * feature is not enabled.
158 *
159 * The order of the dimensions in the list of constants below determines
160 * their layout in RAM. The cargo-based 'dimensions' are not completely
161 * independent -- some combinations are illegal and not used. They are
162 * handled as three dimensions rather than one for simplicity. Placing
163 * these dimensions first causes the unused cells in the table to be
164 * grouped together in large blocks. This keeps them from polluting
165 * cache lines, and if they are large enough, allows the memory manager
166 * to swap out entire pages.
167 *
168 * If the table gets too big to fit in RAM:
169 * * Combine the Edens, Cloaks, and UnusedCargo dimensions. Of the
170 * 24 combinations, only 15 are legal: a 38% savings.
171 * * Reduce the size of the Fuel dimension to 3. We only ever look
172 * backwards 2 units, so just rotate the logical values through
173 * the same 3 physical addresses. This is good for an 82% savings.
174 * * Reduce the size of the Edens dimension from 3 to 2, for the
175 * same reasons as Fuel above. 33% savings.
176 * * Buy more ram. (Just sayin'. It's cheaper than you think.)
177 *
178 */
179
180 // The official list of dimensions:
181 const (
182 // Name Num Size Description
183 Edens = iota // 1 3 # of Eden warp units (0 - 2 typically)
184 Cloaks // 2 1-2 # of Devices of Cloaking (0 or 1)
185 UnusedCargo // 3 4 # of unused cargo spaces (0 - 3 typically)
186 Fuel // 4 17 Hyper jump power left (0 - 16)
187 Location // 5 26 Location (which planet)
188 Hold // 6 15 Cargo bay contents (a *Commodity or nil)
189 Traded // 7 2 Traded yet?
190 BuyFighters // 8 1-2 Errand: Buy fighter drones
191 BuyShields // 9 1-2 Errand: Buy shield batteries
192 Visit // 10 1-2**N Visit: Stop by these N planets in the route
193
194 NumDimensions
195 )
196
197 func bint(b bool) int {
198 if b {
199 return 1
200 }
201 return 0
202 }
203
204 func DimensionSizes(data planet_data) []int {
205 eden_capacity := data.Commodities["Eden Warp Units"].Limit
206 if *start_edens > eden_capacity {
207 eden_capacity = *start_edens
208 }
209 cloak_capacity := bint(*cloak)
210 dims := make([]int, NumDimensions)
211 dims[Edens] = eden_capacity + 1
212 dims[Cloaks] = cloak_capacity + 1
213 dims[UnusedCargo] = eden_capacity + cloak_capacity + 1
214 dims[Fuel] = *fuel + 1
215 dims[Location] = len(data.Planets)
216 dims[Hold] = len(data.Commodities) + 1
217 dims[Traded] = 2
218 dims[BuyFighters] = bint(*drones > 0) + 1
219 dims[BuyShields] = bint(*batteries > 0) + 1
220 dims[Visit] = 1 << uint(len(visit()))
221
222 // Remind myself to add a line above when adding new dimensions
223 for i, dim := range dims {
224 if dim < 1 {
225 panic(i)
226 }
227 }
228 return dims
229 }
230
231 func StateTableSize(dims []int) int {
232 product := 1
233 for _, size := range dims {
234 product *= size
235 }
236 return product
237 }
238
239 type State struct {
240 value, from int32
241 }
242
243 const (
244 CELL_UNINITIALIZED = -2147483647 + iota
245 CELL_BEING_EVALUATED
246 CELL_RUBISH
247 )
248
249 func EncodeIndex(dims, addr []int) int32 {
250 index := addr[0]
251 if addr[0] > dims[0] {
252 panic(0)
253 }
254 for i := 1; i < NumDimensions; i++ {
255 if addr[i] < 0 || addr[i] >= dims[i] {
256 panic(i)
257 }
258 index = index*dims[i] + addr[i]
259 }
260 return int32(index)
261 }
262
263 func DecodeIndex(dims []int, index int32) []int {
264 addr := make([]int, NumDimensions)
265 for i := NumDimensions - 1; i > 0; i-- {
266 addr[i] = int(index) % dims[i]
267 index /= int32(dims[i])
268 }
269 addr[0] = int(index)
270 return addr
271 }
272
273 func CreateStateTable(data planet_data, dims []int) []State {
274 table := make([]State, StateTableSize(dims))
275 for i := range table {
276 table[i].value = CELL_UNINITIALIZED
277 }
278
279 addr := make([]int, NumDimensions)
280 addr[Fuel] = *fuel
281 addr[Edens] = *start_edens
282 addr[Location] = data.p2i[*start]
283 addr[Traded] = 1
284 table[EncodeIndex(dims, addr)].value = int32(*funds)
285
286 return table
287 }
288
289 /* CellValue fills in the one cell at address addr by looking at all
290 * the possible ways to reach this cell and selecting the best one. */
291
292 func Consider(data planet_data, dims []int, table []State, there []int, value_difference int, best_value *int32, best_source []int) {
293 there_value := CellValue(data, dims, table, there)
294 if value_difference < 0 && int32(-value_difference) > there_value {
295 /* Can't afford this transition */
296 return
297 }
298 possible_value := there_value + int32(value_difference)
299 if possible_value > *best_value {
300 *best_value = possible_value
301 copy(best_source, there)
302 }
303 }
304
305 var cell_filled_count int
306
307 func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
308 my_index := EncodeIndex(dims, addr)
309 if table[my_index].value == CELL_BEING_EVALUATED {
310 panic("Circular dependency")
311 }
312 if table[my_index].value != CELL_UNINITIALIZED {
313 return table[my_index].value
314 }
315 table[my_index].value = CELL_BEING_EVALUATED
316
317 best_value := int32(CELL_RUBISH)
318 best_source := make([]int, NumDimensions)
319 other := make([]int, NumDimensions)
320 copy(other, addr)
321 planet := data.i2p[addr[Location]]
322
323 /* Travel here */
324 if addr[Traded] == 0 { /* Can't have traded immediately after traveling. */
325 other[Traded] = 1 /* Travel from states that have done trading. */
326
327 /* Travel here via a 2-fuel unit jump */
328 if addr[Fuel]+2 < dims[Fuel] {
329 other[Fuel] = addr[Fuel] + 2
330 hole_index := (dims[Fuel] - 1) - (addr[Fuel] + 2)
331 if hole_index >= len(flight_plan()) || addr[Location] != data.p2i[flight_plan()[hole_index]] {
332 for other[Location] = 0; other[Location] < dims[Location]; other[Location]++ {
333 if data.Planets[data.i2p[addr[Location]]].BeaconOn {
334 Consider(data, dims, table, other, 0, &best_value, best_source)
335 }
336 }
337 }
338 other[Location] = addr[Location]
339 other[Fuel] = addr[Fuel]
340 }
341
342 /* Travel here via a 1-fuel unit jump (a hyper hole) */
343 if addr[Fuel]+1 < dims[Fuel] {
344 hole_index := (dims[Fuel] - 1) - (addr[Fuel] + 1)
345 if hole_index < len(flight_plan()) && addr[Location] == data.p2i[flight_plan()[hole_index]] {
346 other[Fuel] = addr[Fuel] + 1
347 for other[Location] = 0; other[Location] < dims[Location]; other[Location]++ {
348 Consider(data, dims, table, other, 0, &best_value, best_source)
349 }
350 other[Location] = addr[Location]
351 other[Fuel] = addr[Fuel]
352 }
353 }
354
355 /* Travel here via Eden Warp Unit */
356 if addr[Edens]+1 < dims[Edens] && addr[UnusedCargo] > 0 {
357 _, available := data.Planets[data.i2p[addr[Location]]].RelativePrices["Eden Warp Units"]
358 if !available {
359 other[Edens] = addr[Edens] + 1
360 if other[Hold] != 0 {
361 other[UnusedCargo] = addr[UnusedCargo] - 1
362 }
363 for other[Location] = 0; other[Location] < dims[Location]; other[Location]++ {
364 Consider(data, dims, table, other, 0, &best_value, best_source)
365 }
366 other[Location] = addr[Location]
367 other[UnusedCargo] = addr[UnusedCargo]
368 other[Edens] = addr[Edens]
369 }
370 }
371 other[Traded] = addr[Traded]
372 }
373
374 /* Trade */
375 if addr[Traded] == 1 {
376 other[Traded] = 0
377
378 /* Consider not trading */
379 Consider(data, dims, table, other, 0, &best_value, best_source)
380
381 if !data.Planets[data.i2p[addr[Location]]].Private {
382
383 /* Sell */
384 if addr[Hold] == 0 && addr[UnusedCargo] == 0 {
385 for other[Hold] = 0; other[Hold] < dims[Hold]; other[Hold]++ {
386 commodity := data.i2c[other[Hold]]
387 if !data.Commodities[commodity].CanSell {
388 continue
389 }
390 relative_price, available := data.Planets[planet].RelativePrices[commodity]
391 if !available {
392 // TODO: Dump cargo
393 continue
394 }
395 base_price := data.Commodities[commodity].BasePrice
396 absolute_price := float64(base_price) * float64(relative_price) / 100.0
397 sell_price := int(absolute_price * 0.9)
398
399 for other[UnusedCargo] = 0; other[UnusedCargo] < dims[UnusedCargo]; other[UnusedCargo]++ {
400 quantity := *hold - (other[UnusedCargo] + other[Cloaks] + other[Edens])
401 sale_value := quantity * sell_price
402 Consider(data, dims, table, other, sale_value, &best_value, best_source)
403 }
404 }
405 other[UnusedCargo] = addr[UnusedCargo]
406 other[Hold] = addr[Hold]
407 }
408
409 /* Buy */
410 other[Traded] = addr[Traded] /* Buy after selling */
411 if addr[Hold] != 0 {
412 commodity := data.i2c[addr[Hold]]
413 if data.Commodities[commodity].CanSell {
414 relative_price, available := data.Planets[planet].RelativePrices[commodity]
415 if available {
416 base_price := data.Commodities[commodity].BasePrice
417 absolute_price := int(float64(base_price) * float64(relative_price) / 100.0)
418 quantity := *hold - (addr[UnusedCargo] + addr[Cloaks] + addr[Edens])
419 total_price := quantity * absolute_price
420 other[Hold] = 0
421 other[UnusedCargo] = 0
422 Consider(data, dims, table, other, -total_price, &best_value, best_source)
423 other[UnusedCargo] = addr[UnusedCargo]
424 other[Hold] = addr[Hold]
425 }
426 }
427 }
428 }
429 }
430
431 /* Buy a Device of Cloaking */
432 if addr[Cloaks] == 1 && addr[UnusedCargo] < dims[UnusedCargo]-1 {
433 relative_price, available := data.Planets[data.i2p[addr[Location]]].RelativePrices["Device Of Cloakings"]
434 if available {
435 absolute_price := int(float64(data.Commodities["Device Of Cloakings"].BasePrice) * float64(relative_price) / 100.0)
436 other[Cloaks] = 0
437 if other[Hold] != 0 {
438 other[UnusedCargo] = addr[UnusedCargo] + 1
439 }
440 Consider(data, dims, table, other, -absolute_price, &best_value, best_source)
441 other[UnusedCargo] = addr[UnusedCargo]
442 other[Cloaks] = addr[Cloaks]
443 }
444 }
445
446 /* Buy Fighter Drones */
447 if addr[BuyFighters] == 1 {
448 relative_price, available := data.Planets[data.i2p[addr[Location]]].RelativePrices["Fighter Drones"]
449 if available {
450 absolute_price := int(float64(data.Commodities["Fighter Drones"].BasePrice) * float64(relative_price) / 100.0)
451 other[BuyFighters] = 0
452 Consider(data, dims, table, other, -absolute_price**drones, &best_value, best_source)
453 other[BuyFighters] = addr[BuyFighters]
454 }
455 }
456
457 /* Buy Shield Batteries */
458 if addr[BuyShields] == 1 {
459 relative_price, available := data.Planets[data.i2p[addr[Location]]].RelativePrices["Shield Batterys"]
460 if available {
461 absolute_price := int(float64(data.Commodities["Shield Batterys"].BasePrice) * float64(relative_price) / 100.0)
462 other[BuyShields] = 0
463 Consider(data, dims, table, other, -absolute_price**batteries, &best_value, best_source)
464 other[BuyShields] = addr[BuyShields]
465 }
466 }
467
468 /* Visit this planet */
469 var i uint
470 for i = 0; i < uint(len(visit())); i++ {
471 if addr[Visit]&(1<<i) != 0 && visit()[i] == data.i2p[addr[Location]] {
472 other[Visit] = addr[Visit] & ^(1 << i)
473 Consider(data, dims, table, other, 0, &best_value, best_source)
474 }
475 }
476 other[Visit] = addr[Visit]
477
478 /* Buy Eden warp units */
479 eden_limit := data.Commodities["Eden Warp Units"].Limit
480 if addr[Edens] > 0 && addr[Edens] <= eden_limit {
481 relative_price, available := data.Planets[data.i2p[addr[Location]]].RelativePrices["Eden Warp Units"]
482 if available {
483 absolute_price := int(float64(data.Commodities["Eden Warp Units"].BasePrice) * float64(relative_price) / 100.0)
484 for quantity := addr[Edens]; quantity > 0; quantity-- {
485 other[Edens] = addr[Edens] - quantity
486 if addr[Hold] != 0 {
487 other[UnusedCargo] = addr[UnusedCargo] + quantity
488 }
489 if other[UnusedCargo] < dims[UnusedCargo] {
490 Consider(data, dims, table, other, -absolute_price*quantity, &best_value, best_source)
491 }
492 }
493 other[Edens] = addr[Edens]
494 other[UnusedCargo] = addr[UnusedCargo]
495 }
496 }
497
498 // Check that we didn't lose track of any temporary modifications to other.
499 for i := 0; i < NumDimensions; i++ {
500 if addr[i] != other[i] {
501 panic(i)
502 }
503 }
504
505 // Sanity check: This cell was in state BEING_EVALUATED
506 // the whole time that it was being evaluated.
507 if table[my_index].value != CELL_BEING_EVALUATED {
508 panic(my_index)
509 }
510
511 // Record our findings
512 table[my_index].value = best_value
513 table[my_index].from = EncodeIndex(dims, best_source)
514
515 // UI: Progress bar
516 cell_filled_count++
517 if cell_filled_count&0xff == 0 {
518 print(fmt.Sprintf("\r%3.1f%%", 100*float64(cell_filled_count)/float64(StateTableSize(dims))))
519 }
520
521 return table[my_index].value
522 }
523
524 func FindBestState(data planet_data, dims []int, table []State) int32 {
525 addr := make([]int, NumDimensions)
526 addr[Edens] = *end_edens
527 addr[Cloaks] = dims[Cloaks] - 1
528 addr[BuyFighters] = dims[BuyFighters] - 1
529 addr[BuyShields] = dims[BuyShields] - 1
530 addr[Visit] = dims[Visit] - 1
531 addr[Traded] = 1
532 addr[Hold] = 0
533 addr[UnusedCargo] = 0
534 max_index := int32(-1)
535 max_value := int32(0)
536 max_fuel := 1
537 if *fuel == 0 {
538 max_fuel = 0
539 }
540 for addr[Fuel] = 0; addr[Fuel] <= max_fuel; addr[Fuel]++ {
541 for addr[Location] = 0; addr[Location] < dims[Location]; addr[Location]++ {
542 if len(end()) == 0 || end()[data.i2p[addr[Location]]] {
543 index := EncodeIndex(dims, addr)
544 value := CellValue(data, dims, table, addr)
545 if value > max_value {
546 max_value = value
547 max_index = index
548 }
549 }
550 }
551 }
552 return max_index
553 }
554
555 func Commas(n int32) (s string) {
556 r := n % 1000
557 n /= 1000
558 for n > 0 {
559 s = fmt.Sprintf(",%03d", r) + s
560 r = n % 1000
561 n /= 1000
562 }
563 s = fmt.Sprint(r) + s
564 return
565 }
566
567 func DescribePath(data planet_data, dims []int, table []State, start int32) (description []string) {
568 for index := start; index > 0 && table[index].from > 0; index = table[index].from {
569 var line string
570 addr := DecodeIndex(dims, index)
571 prev := DecodeIndex(dims, table[index].from)
572 if addr[Fuel] != prev[Fuel] {
573 from := data.i2p[prev[Location]]
574 to := data.i2p[addr[Location]]
575 line += fmt.Sprintf("Jump from %v to %v (%v hyper jump units)", from, to, prev[Fuel]-addr[Fuel])
576 }
577 if addr[Edens] == prev[Edens]-1 {
578 from := data.i2p[prev[Location]]
579 to := data.i2p[addr[Location]]
580 line += fmt.Sprintf("Eden warp from %v to %v", from, to)
581 }
582 if addr[Hold] != prev[Hold] {
583 if addr[Hold] == 0 {
584 quantity := *hold - (prev[UnusedCargo] + prev[Edens] + prev[Cloaks])
585 line += fmt.Sprintf("Sell %v %v", quantity, data.i2c[prev[Hold]])
586 } else if prev[Hold] == 0 {
587 quantity := *hold - (addr[UnusedCargo] + addr[Edens] + addr[Cloaks])
588 line += fmt.Sprintf("Buy %v %v", quantity, data.i2c[addr[Hold]])
589 } else {
590 panic("Switched cargo?")
591 }
592
593 }
594 if addr[Cloaks] == 1 && prev[Cloaks] == 0 {
595 // TODO: Dump cloaks, convert from cargo?
596 line += "Buy a Cloak"
597 }
598 if addr[Edens] > prev[Edens] {
599 line += fmt.Sprint("Buy ", addr[Edens]-prev[Edens], " Eden Warp Units")
600 }
601 if addr[BuyShields] == 1 && prev[BuyShields] == 0 {
602 line += fmt.Sprint("Buy ", *batteries, " Shield Batterys")
603 }
604 if addr[BuyFighters] == 1 && prev[BuyFighters] == 0 {
605 line += fmt.Sprint("Buy ", *drones, " Fighter Drones")
606 }
607 if addr[Visit] != prev[Visit] {
608 // TODO: verify that the bit chat changed is addr[Location]
609 line += fmt.Sprint("Visit ", data.i2p[addr[Location]])
610 }
611 if line == "" && addr[Hold] == prev[Hold] && addr[Traded] != prev[Traded] {
612 // The Traded dimension is for housekeeping. It doesn't directly
613 // correspond to in-game actions, so don't report transitions.
614 continue
615 }
616 if line == "" {
617 line = fmt.Sprint(prev, " -> ", addr)
618 }
619 description = append(description, fmt.Sprintf("%13v ", Commas(table[index].value))+line)
620 }
621 return
622 }
623
624 // (Example of a use case for generics in Go)
625 func IndexPlanets(m *map[string]Planet, start_at int) (map[string]int, []string) {
626 e2i := make(map[string]int, len(*m)+start_at)
627 i2e := make([]string, len(*m)+start_at)
628 i := start_at
629 for e := range *m {
630 e2i[e] = i
631 i2e[i] = e
632 i++
633 }
634 return e2i, i2e
635 }
636 func IndexCommodities(m *map[string]Commodity, start_at int) (map[string]int, []string) {
637 e2i := make(map[string]int, len(*m)+start_at)
638 i2e := make([]string, len(*m)+start_at)
639 i := start_at
640 for e := range *m {
641 e2i[e] = i
642 i2e[i] = e
643 i++
644 }
645 return e2i, i2e
646 }
647
648 func main() {
649 flag.Parse()
650 if *cpuprofile != "" {
651 f, err := os.Create(*cpuprofile)
652 if err != nil {
653 panic(err)
654 }
655 pprof.StartCPUProfile(f)
656 defer pprof.StopCPUProfile()
657 }
658 data := ReadData()
659 if *drone_price > 0 {
660 temp := data.Commodities["Fighter Drones"]
661 temp.BasePrice = *drone_price
662 data.Commodities["Fighter Drones"] = temp
663 }
664 if *battery_price > 0 {
665 temp := data.Commodities["Shield Batterys"]
666 temp.BasePrice = *battery_price
667 data.Commodities["Shield Batterys"] = temp
668 }
669 data.p2i, data.i2p = IndexPlanets(&data.Planets, 0)
670 data.c2i, data.i2c = IndexCommodities(&data.Commodities, 1)
671 dims := DimensionSizes(data)
672 table := CreateStateTable(data, dims)
673 best := FindBestState(data, dims, table)
674 print("\n")
675 if best == -1 {
676 print("Cannot acheive success criteria\n")
677 } else {
678 description := DescribePath(data, dims, table, best)
679 for i := len(description) - 1; i >= 0; i-- {
680 fmt.Println(description[i])
681 }
682 }
683 }