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path: root/internal/game/utils.go
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package game

import (
	"fmt"
	"math/rand"

	"thirdcollapse/internal/net"
	"thirdcollapse/internal/object"
	"thirdcollapse/internal/player"
	"thirdcollapse/internal/world"
)

var EquipSlots = []object.EquipSlot{
	object.SlotHead, object.SlotNeck, object.SlotTorso, object.SlotLegs,
	object.SlotHands, object.SlotFeet, object.SlotBack, object.SlotAmmo,
	object.SlotMainHand, object.SlotOffHand, object.SlotRing,
}

type itemMatch struct {
	ID   string
	Name string
	Slot int
}

type xpGain struct {
	Skill string
	XP    int
}

type deathDrop struct {
	itemID    string
	quantity  int
	totalVal  int
	isEquip   bool
	equipSlot object.EquipSlot
	invSlot   int
}

func plural(n int) string {
	if n == 1 {
		return ""
	}
	return "s"
}

func parseIndex(s string) (int, error) {
	var idx int
	_, err := fmt.Sscanf(s, "%d", &idx)
	return idx, err
}

func mobDisplayName(m *world.MobInstance, definite bool) string {
	if m.Unique {
		return m.Name
	}
	if definite {
		return "the " + m.Name
	}
	return "a " + m.Name
}

func mobCombatLevel(m *world.MobInstance) int {
	return int(0.25*float64(m.Attack+m.Strength+m.Defense+m.MaxHP) + 0.5)
}

func uniqueItemNames(matches []itemMatch) []string {
	seen := make(map[string]bool)
	var out []string
	for _, m := range matches {
		if !seen[m.Name] {
			seen[m.Name] = true
			out = append(out, m.Name)
		}
	}
	return out
}

func randInt(max int) int {
	if max <= 0 {
		return 0
	}
	return rand.Intn(max)
}

func innerPickupReport(sess *net.Session, picked []string) {
	for i, name := range picked {
		if i == len(picked)-1 {
			sess.WriteLine(name)
		} else if i == len(picked)-2 {
			sess.Write(name + " and ")
		} else {
			sess.Write(name + ", ")
		}
	}
}

func actionDesc(p *player.Player) string {
	if p.Action == nil {
		return ""
	}
	target := p.Action.TargetName
	if idx, ok := p.Action.Data["instance_idx"]; ok {
		target += fmt.Sprintf(" [%d]", idx)
	}
	switch p.Action.Type {
	case "gather":
		return "mining a " + target
	case "talk":
		return "talking to " + target
	case "use":
		return "using a " + target
	}
	return ""
}