Aatrox buff calculation in Slayer Overlay (#439)

* If aatrox has his +25% buff active, update calculation

* Formatted code and updated 2.1.1.md

Should be more like the rest of the code now.

* More readable

* surely this time

* CTRL+ALT+L

* Fix 0 bosses to kill if below xpPerBoss

1 files changed, 24 insertions, 1 deletions

diff --git a/src/main/java/io/github/moulberry/notenoughupdates/overlays/SlayerOverlay.java b/src/main/java/io/github/moulberry/notenoughupdates/overlays/SlayerOverlay.java
index 72879bf9..95447398 100644
--- a/src/main/java/io/github/moulberry/notenoughupdates/overlays/SlayerOverlay.java
+++ b/src/main/java/io/github/moulberry/notenoughupdates/overlays/SlayerOverlay.java
@@ -47,11 +47,13 @@ public class SlayerOverlay extends TextOverlay {
 
 	private static String slayerEXP = "0";
 	private static int slayerIntXP;
+	private static int differenceFromLastXP = 0;
 	private static int untilNextSlayerLevel;
 	private static int xpToLevelUp;
 	private static boolean useSmallXpNext = true;
 	private static long agvSlayerTime = 0;
 	private static boolean isSlayerNine = false;
+	private static boolean slayerXPBuffActive = false;
 	private static int xpPerBoss = 0;
 	private static int bossesUntilNextLevel = 0;
 	private final HashSet<String> revenantLocations = new HashSet<>(Arrays.asList("Graveyard", "Coal Mine"));
@@ -121,6 +123,22 @@ public class SlayerOverlay extends TextOverlay {
 			isSlayerNine = true;
 		} else if (!slayerXp.equals("0")) {
 			slayerEXP = slayerXp.replace(",", "");
+
+			differenceFromLastXP = slayerIntXP - Integer.parseInt(slayerEXP);
+			if (differenceFromLastXP != 0) {
+				switch (differenceFromLastXP) {
+					case 1875:
+					case 625:
+					case 125:
+					case 31:
+					case 6:
+						slayerXPBuffActive = true;
+						break;
+					default:
+						slayerXPBuffActive = false;
+				}
+			}
+
 			slayerIntXP = Integer.parseInt(slayerEXP);
 			isSlayerNine = false;
 		} else {
@@ -197,9 +215,14 @@ public class SlayerOverlay extends TextOverlay {
 		} else {
 			xpPerBoss = 0;
 		}
+
+		if (slayerXPBuffActive) {
+			xpPerBoss *= 1.25;
+		}
+
 		untilNextSlayerLevel = xpToLevelUp - slayerIntXP;
 		if (xpPerBoss != 0 && untilNextSlayerLevel != 0 && xpToLevelUp != 0) {
-			bossesUntilNextLevel = (xpToLevelUp - untilNextSlayerLevel) / xpPerBoss;
+			bossesUntilNextLevel = (int) Math.ceil((xpToLevelUp - untilNextSlayerLevel) / xpPerBoss);
 		} else {
 			bossesUntilNextLevel = 0;
 		}