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Fix sloppiness while considering private planets
[planeteer] / planeteer.go
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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
18package main
19
20import "flag"
c45c1bca 21import "fmt"
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22import "json"
23import "os"
42f6427c 24import "runtime/pprof"
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25import "strings"
26
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27var funds = flag.Int("funds", 0,
28 "Starting funds")
29
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30var start = flag.String("start", "",
31 "The planet to start at")
d07f3caa 32
e346cb37 33var flight_plan_string = flag.String("flight_plan", "",
63b4dbbc 34 "Your hyper-holes for the day, comma-separated.")
544108c4 35
1c1ede68 36var end_string = flag.String("end", "",
e9ff66cf 37 "A comma-separated list of acceptable ending planets.")
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38
39var planet_data_file = flag.String("planet_data_file", "planet-data",
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40 "The file to read planet data from")
41
63b4dbbc 42var fuel = flag.Int("fuel", 16, "Hyper Jump power left")
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43
44var hold = flag.Int("hold", 300, "Size of your cargo hold")
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45
46var start_edens = flag.Int("start_edens", 0,
47 "How many Eden Warp Units are you starting with?")
48
49var end_edens = flag.Int("end_edens", 0,
50 "How many Eden Warp Units would you like to keep (not use)?")
51
52var cloak = flag.Bool("cloak", false,
53 "Make sure to end with a Device of Cloaking")
54
e9ff66cf 55var drones = flag.Int("drones", 0, "Buy this many Fighter Drones")
c45c1bca 56
e9ff66cf 57var batteries = flag.Int("batteries", 0, "Buy this many Shield Batterys")
c45c1bca 58
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59var drone_price = flag.Int("drone_price", 0, "Today's Fighter Drone price")
60
61var battery_price = flag.Int("battery_price", 0, "Today's Shield Battery price")
62
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63var visit_string = flag.String("visit", "",
64 "A comma-separated list of planets to make sure to visit")
65
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66var cpuprofile = flag.String("cpuprofile", "", "write cpu profile to file")
67
42f6427c 68var visit_cache []string
1539cc25 69
c45c1bca 70func visit() []string {
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71 if visit_cache == nil {
72 if *visit_string == "" {
73 return nil
74 }
75 visit_cache = strings.Split(*visit_string, ",")
e346cb37 76 }
42f6427c 77 return visit_cache
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78}
79
42f6427c 80var flight_plan_cache []string
1539cc25 81
e346cb37 82func flight_plan() []string {
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83 if flight_plan_cache == nil {
84 if *flight_plan_string == "" {
85 return nil
86 }
87 flight_plan_cache = strings.Split(*flight_plan_string, ",")
e346cb37 88 }
42f6427c 89 return flight_plan_cache
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90}
91
42f6427c 92var end_cache map[string]bool
1539cc25 93
1c1ede68 94func end() map[string]bool {
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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
1c1ede68 104 }
42f6427c 105 return end_cache
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106}
107
9b3b3d9a 108type Commodity struct {
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109 BasePrice int
110 CanSell bool
111 Limit int
112}
12bc2cd7 113type Planet struct {
12bc2cd7 114 BeaconOn bool
1539cc25 115 Private bool
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116 /* Use relative prices rather than absolute prices because you
117 can get relative prices without traveling to each planet. */
0e94bdac 118 RelativePrices map[string]int
12bc2cd7 119}
d07f3caa 120type planet_data struct {
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121 Commodities map[string]Commodity
122 Planets map[string]Planet
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123 p2i, c2i map[string]int // Generated; not read from file
124 i2p, i2c []string // Generated; not read from file
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125}
126
127func ReadData() (data planet_data) {
c45c1bca 128 f, err := os.Open(*planet_data_file)
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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
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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.
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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
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165 * cache lines, and if they are large enough, allows the memory manager
166 * to swap out entire pages.
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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 *
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178 */
179
180// The official list of dimensions:
181const (
0372f045 182 // Name Num Size Description
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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
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193
194 NumDimensions
195)
196
197func bint(b bool) int {
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198 if b {
199 return 1
200 }
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201 return 0
202}
203
204func DimensionSizes(data planet_data) []int {
205 eden_capacity := data.Commodities["Eden Warp Units"].Limit
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206 if *start_edens > eden_capacity {
207 eden_capacity = *start_edens
208 }
c45c1bca 209 cloak_capacity := bint(*cloak)
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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)
c67c206a 216 dims[Hold] = len(data.Commodities) + 1
0372f045 217 dims[Traded] = 2
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218 dims[BuyFighters] = bint(*drones > 0) + 1
219 dims[BuyShields] = bint(*batteries > 0) + 1
64d87250 220 dims[Visit] = 1 << uint(len(visit()))
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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 }
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228 return dims
229}
230
231func StateTableSize(dims []int) int {
e346cb37 232 product := 1
c45c1bca 233 for _, size := range dims {
e346cb37 234 product *= size
c45c1bca 235 }
e346cb37 236 return product
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237}
238
239type State struct {
0372f045 240 value, from int32
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241}
242
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243const (
244 CELL_UNINITIALIZED = -2147483647 + iota
245 CELL_BEING_EVALUATED
246 CELL_RUBISH
247)
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248
249func EncodeIndex(dims, addr []int) int32 {
688733e1 250 index := addr[0]
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251 if addr[0] > dims[0] {
252 panic(0)
253 }
330093c1 254 for i := 1; i < NumDimensions; i++ {
688733e1 255 if addr[i] < 0 || addr[i] >= dims[i] {
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256 panic(i)
257 }
688733e1 258 index = index*dims[i] + addr[i]
c45c1bca 259 }
688733e1 260 return int32(index)
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261}
262
0372f045 263func DecodeIndex(dims []int, index int32) []int {
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264 addr := make([]int, NumDimensions)
265 for i := NumDimensions - 1; i > 0; i-- {
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266 addr[i] = int(index) % dims[i]
267 index /= int32(dims[i])
c45c1bca 268 }
0372f045 269 addr[0] = int(index)
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270 return addr
271}
272
0372f045 273func CreateStateTable(data planet_data, dims []int) []State {
330093c1 274 table := make([]State, StateTableSize(dims))
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275 for i := range table {
276 table[i].value = CELL_UNINITIALIZED
277 }
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278
279 addr := make([]int, NumDimensions)
280 addr[Fuel] = *fuel
281 addr[Edens] = *start_edens
282 addr[Location] = data.p2i[*start]
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283 addr[Traded] = 1
284 table[EncodeIndex(dims, addr)].value = int32(*funds)
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285
286 return table
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287}
288
0372f045
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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. */
330093c1 291
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292func 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)
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302 }
303}
304
0372f045 305var cell_filled_count int
1539cc25 306
0372f045 307func CellValue(data planet_data, dims []int, table []State, addr []int) int32 {
e346cb37 308 my_index := EncodeIndex(dims, addr)
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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)
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319 other := make([]int, NumDimensions)
320 copy(other, addr)
0372f045 321 planet := data.i2p[addr[Location]]
e346cb37 322
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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 }
beb45aca 337 }
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338 other[Location] = addr[Location]
339 other[Fuel] = addr[Fuel]
e346cb37 340 }
e346cb37 341
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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]
7b5d9d13 352 }
e346cb37 353 }
e346cb37 354
0372f045 355 /* Travel here via Eden Warp Unit */
34db2393 356 if addr[Edens]+1 < dims[Edens] && addr[UnusedCargo] > 0 {
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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]
0c27c344 369 }
330093c1 370 }
0372f045 371 other[Traded] = addr[Traded]
330093c1 372 }
330093c1 373
0372f045
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374 /* Trade */
375 if addr[Traded] == 1 {
376 other[Traded] = 0
330093c1 377
0372f045
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378 /* Consider not trading */
379 Consider(data, dims, table, other, 0, &best_value, best_source)
330093c1 380
0372f045 381 if !data.Planets[data.i2p[addr[Location]]].Private {
330093c1 382
0372f045
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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 }
330093c1 408
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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 }
6918cad2 429 other[Traded] = addr[Traded]
0372f045 430 }
d16f3322 431
544108c4 432 /* Buy a Device of Cloaking */
ada59973
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433 if addr[Cloaks] == 1 && addr[UnusedCargo] < dims[UnusedCargo]-1 {
434 relative_price, available := data.Planets[data.i2p[addr[Location]]].RelativePrices["Device Of Cloakings"]
435 if available {
436 absolute_price := int(float64(data.Commodities["Device Of Cloakings"].BasePrice) * float64(relative_price) / 100.0)
437 other[Cloaks] = 0
f800f732
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438 if other[Hold] != 0 {
439 other[UnusedCargo] = addr[UnusedCargo] + 1
440 }
0372f045 441 Consider(data, dims, table, other, -absolute_price, &best_value, best_source)
ada59973
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442 other[UnusedCargo] = addr[UnusedCargo]
443 other[Cloaks] = addr[Cloaks]
444 }
445 }
76db1b3c 446
544108c4 447 /* Buy Fighter Drones */
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448 if addr[BuyFighters] == 1 {
449 relative_price, available := data.Planets[data.i2p[addr[Location]]].RelativePrices["Fighter Drones"]
450 if available {
451 absolute_price := int(float64(data.Commodities["Fighter Drones"].BasePrice) * float64(relative_price) / 100.0)
452 other[BuyFighters] = 0
1539cc25 453 Consider(data, dims, table, other, -absolute_price**drones, &best_value, best_source)
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454 other[BuyFighters] = addr[BuyFighters]
455 }
456 }
457
544108c4 458 /* Buy Shield Batteries */
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459 if addr[BuyShields] == 1 {
460 relative_price, available := data.Planets[data.i2p[addr[Location]]].RelativePrices["Shield Batterys"]
461 if available {
462 absolute_price := int(float64(data.Commodities["Shield Batterys"].BasePrice) * float64(relative_price) / 100.0)
463 other[BuyShields] = 0
1539cc25 464 Consider(data, dims, table, other, -absolute_price**batteries, &best_value, best_source)
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465 other[BuyShields] = addr[BuyShields]
466 }
467 }
468
544108c4 469 /* Visit this planet */
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470 var i uint
471 for i = 0; i < uint(len(visit())); i++ {
1539cc25 472 if addr[Visit]&(1<<i) != 0 && visit()[i] == data.i2p[addr[Location]] {
4d7362df 473 other[Visit] = addr[Visit] & ^(1 << i)
0372f045 474 Consider(data, dims, table, other, 0, &best_value, best_source)
4d7362df
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475 }
476 }
477 other[Visit] = addr[Visit]
76db1b3c 478
d16f3322
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479 /* Buy Eden warp units */
480 eden_limit := data.Commodities["Eden Warp Units"].Limit
481 if addr[Edens] > 0 && addr[Edens] <= eden_limit {
482 relative_price, available := data.Planets[data.i2p[addr[Location]]].RelativePrices["Eden Warp Units"]
483 if available {
484 absolute_price := int(float64(data.Commodities["Eden Warp Units"].BasePrice) * float64(relative_price) / 100.0)
485 for quantity := addr[Edens]; quantity > 0; quantity-- {
486 other[Edens] = addr[Edens] - quantity
487 if addr[Hold] != 0 {
488 other[UnusedCargo] = addr[UnusedCargo] + quantity
489 }
490 if other[UnusedCargo] < dims[UnusedCargo] {
1539cc25 491 Consider(data, dims, table, other, -absolute_price*quantity, &best_value, best_source)
d16f3322
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492 }
493 }
494 other[Edens] = addr[Edens]
495 other[UnusedCargo] = addr[UnusedCargo]
496 }
497 }
d16f3322 498
688733e1
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499 // Check that we didn't lose track of any temporary modifications to other.
500 for i := 0; i < NumDimensions; i++ {
501 if addr[i] != other[i] {
502 panic(i)
503 }
504 }
505
506 // Sanity check: This cell was in state BEING_EVALUATED
507 // the whole time that it was being evaluated.
0372f045
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508 if table[my_index].value != CELL_BEING_EVALUATED {
509 panic(my_index)
e7e4bc13 510 }
688733e1
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511
512 // Record our findings
0372f045
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513 table[my_index].value = best_value
514 table[my_index].from = EncodeIndex(dims, best_source)
330093c1 515
688733e1 516 // UI: Progress bar
1539cc25
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517 cell_filled_count++
518 if cell_filled_count&0xff == 0 {
0372f045 519 print(fmt.Sprintf("\r%3.1f%%", 100*float64(cell_filled_count)/float64(StateTableSize(dims))))
fcdc120b 520 }
e7e4bc13 521
0372f045 522 return table[my_index].value
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523}
524
0372f045 525func FindBestState(data planet_data, dims []int, table []State) int32 {
ad4de13f
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526 addr := make([]int, NumDimensions)
527 addr[Edens] = *end_edens
528 addr[Cloaks] = dims[Cloaks] - 1
76db1b3c
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529 addr[BuyFighters] = dims[BuyFighters] - 1
530 addr[BuyShields] = dims[BuyShields] - 1
ad4de13f 531 addr[Visit] = dims[Visit] - 1
0372f045 532 addr[Traded] = 1
688733e1
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533 addr[Hold] = 0
534 addr[UnusedCargo] = 0
0372f045
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535 max_index := int32(-1)
536 max_value := int32(0)
688733e1
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537 max_fuel := 1
538 if *fuel == 0 {
539 max_fuel = 0
540 }
541 for addr[Fuel] = 0; addr[Fuel] <= max_fuel; addr[Fuel]++ {
ddef04ab
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542 for addr[Location] = 0; addr[Location] < dims[Location]; addr[Location]++ {
543 if len(end()) == 0 || end()[data.i2p[addr[Location]]] {
544 index := EncodeIndex(dims, addr)
0372f045
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545 value := CellValue(data, dims, table, addr)
546 if value > max_value {
547 max_value = value
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548 max_index = index
549 }
809e65f4 550 }
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551 }
552 }
553 return max_index
554}
555
0372f045 556func Commas(n int32) (s string) {
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557 r := n % 1000
558 n /= 1000
559 for n > 0 {
560 s = fmt.Sprintf(",%03d", r) + s
561 r = n % 1000
562 n /= 1000
563 }
564 s = fmt.Sprint(r) + s
565 return
566}
567
0372f045 568func DescribePath(data planet_data, dims []int, table []State, start int32) (description []string) {
2f4a9ae8 569 for index := start; index > 0 && table[index].from > 0; index = table[index].from {
e4a1b48f 570 var line string
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571 addr := DecodeIndex(dims, index)
572 prev := DecodeIndex(dims, table[index].from)
e4a1b48f 573 if addr[Fuel] != prev[Fuel] {
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574 from := data.i2p[prev[Location]]
575 to := data.i2p[addr[Location]]
63b4dbbc 576 line += fmt.Sprintf("Jump from %v to %v (%v hyper jump units)", from, to, prev[Fuel]-addr[Fuel])
e4a1b48f 577 }
1539cc25 578 if addr[Edens] == prev[Edens]-1 {
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579 from := data.i2p[prev[Location]]
580 to := data.i2p[addr[Location]]
581 line += fmt.Sprintf("Eden warp from %v to %v", from, to)
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582 }
583 if addr[Hold] != prev[Hold] {
584 if addr[Hold] == 0 {
585 quantity := *hold - (prev[UnusedCargo] + prev[Edens] + prev[Cloaks])
e4a1b48f 586 line += fmt.Sprintf("Sell %v %v", quantity, data.i2c[prev[Hold]])
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587 } else if prev[Hold] == 0 {
588 quantity := *hold - (addr[UnusedCargo] + addr[Edens] + addr[Cloaks])
e4a1b48f 589 line += fmt.Sprintf("Buy %v %v", quantity, data.i2c[addr[Hold]])
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590 } else {
591 panic("Switched cargo?")
592 }
593
594 }
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595 if addr[Cloaks] == 1 && prev[Cloaks] == 0 {
596 // TODO: Dump cloaks, convert from cargo?
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597 line += "Buy a Cloak"
598 }
d16f3322 599 if addr[Edens] > prev[Edens] {
1539cc25 600 line += fmt.Sprint("Buy ", addr[Edens]-prev[Edens], " Eden Warp Units")
e4a1b48f 601 }
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602 if addr[BuyShields] == 1 && prev[BuyShields] == 0 {
603 line += fmt.Sprint("Buy ", *batteries, " Shield Batterys")
604 }
605 if addr[BuyFighters] == 1 && prev[BuyFighters] == 0 {
606 line += fmt.Sprint("Buy ", *drones, " Fighter Drones")
607 }
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608 if addr[Visit] != prev[Visit] {
609 // TODO: verify that the bit chat changed is addr[Location]
610 line += fmt.Sprint("Visit ", data.i2p[addr[Location]])
611 }
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612 if line == "" && addr[Hold] == prev[Hold] && addr[Traded] != prev[Traded] {
613 // The Traded dimension is for housekeeping. It doesn't directly
614 // correspond to in-game actions, so don't report transitions.
615 continue
616 }
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617 if line == "" {
618 line = fmt.Sprint(prev, " -> ", addr)
f800f732 619 }
1539cc25 620 description = append(description, fmt.Sprintf("%13v ", Commas(table[index].value))+line)
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621 }
622 return
623}
624
c45c1bca 625// (Example of a use case for generics in Go)
e7e4bc13 626func IndexPlanets(m *map[string]Planet, start_at int) (map[string]int, []string) {
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627 e2i := make(map[string]int, len(*m)+start_at)
628 i2e := make([]string, len(*m)+start_at)
e7e4bc13 629 i := start_at
c45c1bca 630 for e := range *m {
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631 e2i[e] = i
632 i2e[i] = e
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633 i++
634 }
e7e4bc13 635 return e2i, i2e
c45c1bca 636}
e7e4bc13 637func IndexCommodities(m *map[string]Commodity, start_at int) (map[string]int, []string) {
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638 e2i := make(map[string]int, len(*m)+start_at)
639 i2e := make([]string, len(*m)+start_at)
e7e4bc13 640 i := start_at
c45c1bca 641 for e := range *m {
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642 e2i[e] = i
643 i2e[i] = e
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644 i++
645 }
e7e4bc13 646 return e2i, i2e
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647}
648
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649func main() {
650 flag.Parse()
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651 if *cpuprofile != "" {
652 f, err := os.Create(*cpuprofile)
653 if err != nil {
654 panic(err)
655 }
656 pprof.StartCPUProfile(f)
657 defer pprof.StopCPUProfile()
658 }
d07f3caa 659 data := ReadData()
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660 if *drone_price > 0 {
661 temp := data.Commodities["Fighter Drones"]
662 temp.BasePrice = *drone_price
663 data.Commodities["Fighter Drones"] = temp
664 }
665 if *battery_price > 0 {
666 temp := data.Commodities["Shield Batterys"]
667 temp.BasePrice = *battery_price
668 data.Commodities["Shield Batterys"] = temp
669 }
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670 data.p2i, data.i2p = IndexPlanets(&data.Planets, 0)
671 data.c2i, data.i2c = IndexCommodities(&data.Commodities, 1)
c45c1bca 672 dims := DimensionSizes(data)
0372f045 673 table := CreateStateTable(data, dims)
ad4de13f 674 best := FindBestState(data, dims, table)
0372f045 675 print("\n")
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676 if best == -1 {
677 print("Cannot acheive success criteria\n")
678 } else {
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679 description := DescribePath(data, dims, table, best)
680 for i := len(description) - 1; i >= 0; i-- {
681 fmt.Println(description[i])
682 }
2f4a9ae8 683 }
d07f3caa 684}