life.gno

  1package fish
  2
  3import (
  4	"chain/runtime"
  5	"crypto/sha256"
  6	"strconv"
  7	"time"
  8)
  9
 10func Register(cur realm, id int, stake int64) {
 11	caller := requireUser(cur)
 12	body := must(id)
 13	if body.owner != caller {
 14		panic("fish: owner")
 15	}
 16	if body.inMatch {
 17		panic("fish: match")
 18	}
 19	if body.mustHeal {
 20		panic("fish: heal")
 21	}
 22	guardMovable(body)
 23	if tooHurt(body) {
 24		panic("fish: hp")
 25	}
 26	if walletInSea(caller) {
 27		panic("fish: one")
 28	}
 29	if !arenaStake(stake) {
 30		panic("fish: stake")
 31	}
 32	takeExact(stake)
 33	now := time.Now().Unix()
 34	body.pool = stake
 35	body.inMatch = true
 36	body.boutPaid = false
 37	body.startUnix = now
 38	body.endUnix = 0
 39	body.lastCombatMilli = -1
 40	body.nextMoveMilli = 0
 41	body.burstUntil = 0
 42	body.nextBurstAt = 0
 43	body.springBorn = -1
 44	placeSwimmer(body)
 45	clearDamage(id)
 46}
 47
 48func Leave(cur realm, id int) {
 49	caller := requireUser(cur)
 50	takeExact(0)
 51	body := must(id)
 52	if body.owner != caller {
 53		panic("fish: owner")
 54	}
 55	if !body.inMatch {
 56		panic("fish: match")
 57	}
 58	nowMs := time.Now().UnixMilli()
 59	if body.lastCombatMilli >= 0 && nowMs < body.lastCombatMilli+combatLockMs {
 60		panic("fish: stay")
 61	}
 62	returnCheers(body, cur)
 63	stake := body.pool
 64	body.pool = 0
 65	body.inMatch = false
 66	body.boutPaid = false
 67	clearDamage(id)
 68	send(caller, stake, cur)
 69}
 70
 71func SettleMatch(cur realm, id int) {
 72	requireUser(cur)
 73	takeExact(0)
 74	body := must(id)
 75	if !body.inMatch {
 76		panic("fish: match")
 77	}
 78	_ = body
 79	panic("fish: sea")
 80}
 81
 82func CommitLay(cur realm, id int) {
 83	caller := requireUser(cur)
 84	body := must(id)
 85	if body.owner != caller {
 86		panic("fish: owner")
 87	}
 88	guardMovable(body)
 89	left := body.bouts - body.layBoutsUsed
 90	if left < 3 {
 91		panic("fish: bouts")
 92	}
 93	takeExact(layFee)
 94	payMint(layFee, cur)
 95	body.layBoutsUsed = body.bouts
 96	body.layOpen = true
 97	body.layHeight = runtime.ChainHeight()
 98}
 99
100func SettleLay(cur realm, id int) int {
101	requireUser(cur)
102	takeExact(0)
103	body := must(id)
104	if !body.layOpen {
105		panic("fish: lay")
106	}
107	height := runtime.ChainHeight()
108	if height < body.layHeight+layBlocks {
109		panic("fish: early")
110	}
111	trait := traitFrom(body.id, body.layHeight, height, time.Now().Unix())
112	body.layOpen = false
113	return issue(body.owner, body.name+" fry", body.rarity, body.size, trait)
114}
115
116func Upgrade(cur realm, keep, food int) int {
117	caller := requireUser(cur)
118	if keep == food {
119		panic("fish: upgrade")
120	}
121	a := must(keep)
122	b := must(food)
123	if a.owner != caller || b.owner != caller {
124		panic("fish: owner")
125	}
126	guardMovable(a)
127	guardMovable(b)
128	if a.rarity != b.rarity || a.size != b.size || a.trait != b.trait {
129		panic("fish: pair")
130	}
131	if a.rarity != "common" {
132		panic("fish: roll")
133	}
134	if a.bouts < 1 || b.bouts < 1 {
135		panic("fish: bouts")
136	}
137	takeExact(upgradeFee)
138	send(upgradeSink, upgradeFee, cur)
139	name := a.name
140	size := a.size
141	trait := a.trait
142	burnBody(a)
143	burnBody(b)
144	return issue(caller, name, "uncommon", size, trait)
145}
146
147func burnBody(body *fishBody) {
148	burnGRC(body.id)
149	body.burned = true
150	body.owner = address("")
151	body.seller = address("")
152	body.price = 0
153	body.listed = false
154	body.pool = 0
155	body.inMatch = false
156	body.layOpen = false
157}
158
159func traitFrom(id int, commitHeight, settleHeight, unix int64) string {
160	raw := strconv.Itoa(id) + ":" + strconv.FormatInt(commitHeight, 10) + ":" + strconv.FormatInt(settleHeight, 10) + ":" + strconv.FormatInt(unix, 10)
161	sum := sha256.Sum256([]byte(raw))
162	var n int64
163	for i := 0; i < len(sum); i++ {
164		n = (n*256 + int64(sum[i])) % 3
165	}
166	switch n {
167	case 0:
168		return "swift"
169	case 1:
170		return "fang"
171	default:
172		return "hide"
173	}
174}