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package action
import (
"fmt"
"math/rand"
"os"
"path/filepath"
"strings"
"sync"
"gopkg.in/yaml.v3"
)
func BuildPathIndex(dir string) map[string]string {
index := make(map[string]string)
filepath.WalkDir(dir, func(path string, d os.DirEntry, err error) error {
if err != nil || d.IsDir() || !strings.HasSuffix(d.Name(), ".yaml") {
return nil
}
id := strings.TrimSuffix(d.Name(), ".yaml")
index[id] = path
return nil
})
return index
}
func BuildRoomIndex(dir string) map[int]string {
index := make(map[int]string)
filepath.WalkDir(dir, func(path string, d os.DirEntry, err error) error {
if err != nil || d.IsDir() || !strings.HasSuffix(d.Name(), ".yaml") {
return nil
}
id := strings.TrimSuffix(d.Name(), ".yaml")
var n int
if _, scanErr := fmt.Sscanf(id, "%d", &n); scanErr == nil {
index[n] = path
}
return nil
})
return index
}
func WalkYAMLDir(dir string, fn func(path, id string, data []byte) error) error {
return filepath.WalkDir(dir, func(path string, d os.DirEntry, err error) error {
if err != nil || d.IsDir() || !strings.HasSuffix(d.Name(), ".yaml") {
return nil
}
data, readErr := os.ReadFile(path)
if readErr != nil {
return nil
}
id := strings.TrimSuffix(d.Name(), ".yaml")
return fn(path, id, data)
})
}
type Duplicate struct {
ID string
Paths []string
}
func CheckDuplicateIDs(dir string) []Duplicate {
seen := make(map[string][]string)
filepath.WalkDir(dir, func(path string, d os.DirEntry, err error) error {
if err != nil || d.IsDir() || !strings.HasSuffix(d.Name(), ".yaml") {
return nil
}
id := strings.TrimSuffix(d.Name(), ".yaml")
seen[id] = append(seen[id], path)
return nil
})
var dups []Duplicate
for id, paths := range seen {
if len(paths) > 1 {
dups = append(dups, Duplicate{ID: id, Paths: paths})
}
}
return dups
}
func SuccessChance(cfg SuccessFormula, level int, requiredLevel int) float64 {
chance := cfg.Base + float64(level-requiredLevel)*cfg.PerLevel
if chance > cfg.Cap {
chance = cfg.Cap
}
if chance < 0 {
chance = 0
}
return chance
}
var (
dropIndex map[string]string
dropIndexMu sync.Mutex
)
func loadDropIndex(dataDir string) map[string]string {
dropIndexMu.Lock()
defer dropIndexMu.Unlock()
if dropIndex == nil {
dropIndex = BuildPathIndex(filepath.Join(dataDir, "drops"))
}
return dropIndex
}
func LoadDropTable(dataDir, id string) (*DropTableDef, error) {
index := loadDropIndex(dataDir)
path, ok := index[id]
if !ok {
path = filepath.Join(dataDir, "drops", id+".yaml")
}
data, err := os.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("read drop table %s: %w", id, err)
}
var dt DropTableDef
if err := yaml.Unmarshal(data, &dt); err != nil {
return nil, fmt.Errorf("parse drop table %s: %w", id, err)
}
return &dt, nil
}
func ResolveDrop(dataDir string, drops []DropEntry) *DropEntry {
if len(drops) == 0 {
return nil
}
total := 0
for _, d := range drops {
total += d.Weight
}
if total <= 0 {
return nil
}
roll := rand.Intn(total)
cumulative := 0
for i := range drops {
cumulative += drops[i].Weight
if roll < cumulative {
if drops[i].Table != "" {
sub, err := LoadDropTable(dataDir, drops[i].Table)
if err == nil {
if resolved := ResolveDrop(dataDir, sub.Drops); resolved != nil {
qty := drops[i].Quantity
if qty <= 0 {
qty = resolved.Quantity
}
if qty <= 0 {
qty = 1
}
return &DropEntry{
ItemID: resolved.ItemID,
Quantity: qty,
Depletes: drops[i].Depletes,
Message: drops[i].Message,
}
}
}
return nil
}
return &drops[i]
}
}
return &drops[0]
}
|
