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|
package action
import (
"fmt"
"math/rand"
"os"
"path/filepath"
"sync"
"gopkg.in/yaml.v3"
)
type Store struct {
dataDir string
mu sync.Mutex
cache map[string]*RawBehavior
}
type RawBehavior struct {
ID string
Type string
Raw map[string]any
}
func NewStore(dataDir string) *Store {
return &Store{
dataDir: dataDir,
cache: make(map[string]*RawBehavior),
}
}
func (s *Store) Load(id string) (*RawBehavior, error) {
s.mu.Lock()
if b, ok := s.cache[id]; ok {
s.mu.Unlock()
return b, nil
}
s.mu.Unlock()
path := filepath.Join(s.dataDir, "behaviors", id+".yaml")
data, err := os.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("read behavior %s: %w", id, err)
}
var raw map[string]any
if err := yaml.Unmarshal(data, &raw); err != nil {
return nil, fmt.Errorf("parse behavior %s: %w", id, err)
}
rb := &RawBehavior{ID: id, Raw: raw}
if t, ok := raw["type"].(string); ok {
rb.Type = t
}
if rid, ok := raw["id"].(string); ok {
rb.ID = rid
}
s.mu.Lock()
s.cache[id] = rb
s.mu.Unlock()
return rb, nil
}
func unmarshalRaw[T any](rb *RawBehavior, expectedType string) (*T, error) {
if rb.Type != expectedType {
return nil, fmt.Errorf("behavior %s is type %s, expected %s", rb.ID, rb.Type, expectedType)
}
var cfg T
raw, _ := yaml.Marshal(rb.Raw)
if err := yaml.Unmarshal(raw, &cfg); err != nil {
return nil, fmt.Errorf("parse %s config %s: %w", expectedType, rb.ID, err)
}
return &cfg, nil
}
func (s *Store) LoadGather(id string) (*GatherConfig, error) {
rb, err := s.Load(id)
if err != nil {
return nil, err
}
return unmarshalRaw[GatherConfig](rb, "gather")
}
func (s *Store) LoadTalk(id string) (*TalkConfig, error) {
rb, err := s.Load(id)
if err != nil {
return nil, err
}
return unmarshalRaw[TalkConfig](rb, "talk")
}
func (s *Store) LoadUse(id string) (*UseConfig, error) {
rb, err := s.Load(id)
if err != nil {
return nil, err
}
return unmarshalRaw[UseConfig](rb, "use")
}
func (s *Store) LoadToggle(id string) (*ToggleConfig, error) {
rb, err := s.Load(id)
if err != nil {
return nil, err
}
return unmarshalRaw[ToggleConfig](rb, "toggle")
}
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
}
func (s *Store) LoadDropTable(id string) (*DropTableDef, error) {
path := filepath.Join(s.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 (s *Store) ResolveDrop(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 := s.LoadDropTable(drops[i].Table)
if err == nil {
if resolved := s.ResolveDrop(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]
}
|
