1 files changed, 45 insertions, 0 deletions
diff --git a/exp/functions.go b/exp/functions.go
new file mode 100644
index 0000000..da535c4
--- /dev/null
+++ b/exp/functions.go
@@ -0,0 +1,45 @@
+package exp
+
+import (
+	"github.com/anhgelus/gokord"
+	"math"
+)
+
+func MessageXP(length uint, diversity uint) uint {
+	return uint(math.Floor(
+		0.025*math.Pow(float64(length), 1.25)*math.Sqrt(float64(diversity)) + 1,
+	))
+}
+
+func VocalXP(time uint) uint {
+	return uint(math.Floor(
+		0.01*math.Pow(float64(time), 1.3) + 1,
+	))
+}
+
+// Level gives the level with the given XP.
+// See LevelXP to get the XP required to get a level.
+func Level(xp uint) uint {
+	return uint(math.Floor(
+		0.2 * math.Sqrt(float64(xp)),
+	))
+}
+
+// LevelXP gives the XP required to get this level.
+// See Level to get the level with the given XP.
+func LevelXP(level uint) uint {
+	return uint(math.Floor(
+		math.Pow(float64(5*level), 2),
+	))
+}
+
+func Lose(time uint, xp uint) uint {
+	if gokord.Debug {
+		return uint(math.Floor(
+			math.Pow(float64(time), 3) * math.Pow(10, -2+math.Log(float64(time))) * math.Floor(float64(xp/500)+1),
+		)) // a little bit faster to lose exp
+	}
+	return uint(math.Floor(
+		math.Pow(float64(time), 2) * math.Pow(10, -2+math.Log(float64(time/85))) * math.Floor(float64(xp/500)+1),
+	))
+}