Initial commit

server/internal/gameutil/exp.go

@@ -0,0 +1,19 @@
+package gameutil
+
+// LevelAndCap returns the level for the given cumulative EXP based on
+// the thresholds slice, and clamps EXP so it never exceeds the last
+// threshold (max-level cap).
+func LevelAndCap(exp int32, thresholds []int32) (level, capped int32) {
+	level = 1
+	for lvl := 1; lvl < len(thresholds); lvl++ {
+		if exp >= thresholds[lvl] {
+			level = int32(lvl)
+		} else {
+			break
+		}
+	}
+	if len(thresholds) > 0 && exp > thresholds[len(thresholds)-1] {
+		exp = thresholds[len(thresholds)-1]
+	}
+	return level, exp
+}