From e44729092e0864665baecfd663d03fbc4002d312 Mon Sep 17 00:00:00 2001
From: Hans Moog <hm@mkjc.net>
Date: Sun, 28 Jul 2019 23:02:55 +0200
Subject: [PATCH] Feat: moving file to main computer
---
packages/mana/mana.go | 28 ++++++++++++++++++++++++++++
packages/mana/mana_test.go | 14 ++++++++++++++
2 files changed, 42 insertions(+)
create mode 100644 packages/mana/mana.go
create mode 100644 packages/mana/mana_test.go
diff --git a/packages/mana/mana.go b/packages/mana/mana.go
new file mode 100644
index 00000000..a2706c74
--- /dev/null
+++ b/packages/mana/mana.go
@@ -0,0 +1,28 @@
+package mana
+
+import "math"
+
+func CoinTimeDestroyed(transferredValue uint64, parkedTime uint64) uint64 {
+ return transferredValue * parkedTime
+}
+
+func ErodedGains(gainsPerInterval uint64, elapsedIntervals uint64) uint64 {
+ return uint64(float64(gainsPerInterval) * DECAY_FACTOR * (1 - math.Pow(DECAY_FACTOR, float64(elapsedIntervals))) / (1 - DECAY_FACTOR))
+}
+
+func ManaOfTransfer(value uint64, parkedTime uint64) uint64 {
+ fullErosionIntervals := parkedTime / DECAY_INTERVAL
+
+ if fullErosionIntervals >= 1 {
+ gainsPerInterval := CoinTimeDestroyed(value, DECAY_INTERVAL)
+
+ return ErodedGains(gainsPerInterval, fullErosionIntervals) + CoinTimeDestroyed(value, (parkedTime-fullErosionIntervals*DECAY_INTERVAL))
+ } else {
+ return CoinTimeDestroyed(value, parkedTime)
+ }
+}
+
+const (
+ DECAY_INTERVAL = 100
+ DECAY_FACTOR = 0.9
+)
diff --git a/packages/mana/mana_test.go b/packages/mana/mana_test.go
new file mode 100644
index 00000000..018bbea7
--- /dev/null
+++ b/packages/mana/mana_test.go
@@ -0,0 +1,14 @@
+package mana
+
+import (
+ "fmt"
+ "testing"
+)
+
+func TestManaOfTransfer(t *testing.T) {
+ fmt.Println(ManaOfTransfer(50, 99))
+ fmt.Println(ManaOfTransfer(50, 100))
+ fmt.Println(ManaOfTransfer(50, 200))
+ fmt.Println(ManaOfTransfer(50, 290))
+ fmt.Println(ManaOfTransfer(50, 300))
+}
--
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