Gacha banner tweaks

Removed min/maxItemType
Added configurable base weight values for banners

src/main/java/emu/grasscutter/game/gacha/GachaBanner.java

@@ -16,8 +16,8 @@ public class GachaBanner {
 	private int sortId;
 	private int[] rateUpItems1;
 	private int[] rateUpItems2;
-	private int minItemType = 1;
-	private int maxItemType = 2;
+	private int baseYellowWeight = 60; // Max 10000
+	private int basePurpleWeight = 510; // Max 10000
 	private int eventChance = 50; // Chance to win a featured event item
 	private int softPity = 75;
 	private int hardPity = 90;
@@ -63,20 +63,20 @@ public class GachaBanner {
 		return sortId;
 	}
 
-	public int[] getRateUpItems1() {
-		return rateUpItems1;
+	public int getBaseYellowWeight() {
+		return baseYellowWeight;
 	}
 
-	public int[] getRateUpItems2() {
-		return rateUpItems2;
+	public int getBasePurpleWeight() {
+		return basePurpleWeight;
 	}
 
-	public int getMinItemType() {
-		return minItemType;
+	public int[] getRateUpItems1() {
+		return rateUpItems1;
 	}
 
-	public int getMaxItemType() {
-		return maxItemType;
+	public int[] getRateUpItems2() {
+		return rateUpItems2;
 	}
 	
 	public int getSoftPity() {

src/main/java/emu/grasscutter/game/gacha/GachaManager.java

@@ -15,6 +15,7 @@ import emu.grasscutter.Grasscutter;
 import emu.grasscutter.data.GameData;
 import emu.grasscutter.data.def.ItemData;
 import emu.grasscutter.game.avatar.Avatar;
+import emu.grasscutter.game.gacha.GachaBanner.BannerType;
 import emu.grasscutter.game.inventory.GameItem;
 import emu.grasscutter.game.inventory.ItemType;
 import emu.grasscutter.game.inventory.MaterialType;
@@ -125,8 +126,8 @@ public class GachaManager {
 			int itemId = 0;
 			
 			int bonusYellowChance = gachaInfo.getPity5() >= banner.getSoftPity() ? 100 * (gachaInfo.getPity5() - banner.getSoftPity() - 1): 0;
-			int yellowChance = 60 + (int) Math.floor(100f * (gachaInfo.getPity5() / (banner.getSoftPity() - 1D))) + bonusYellowChance;
-			int purpleChance = 10000 - (510 + (int) Math.floor(790f * (gachaInfo.getPity4() / 8f)));
+			int yellowChance = banner.getBaseYellowWeight() + (int) Math.floor(100f * (gachaInfo.getPity5() / (banner.getSoftPity() - 1D))) + bonusYellowChance;
+			int purpleChance = 10000 - (banner.getBasePurpleWeight() + (int) Math.floor(790f * (gachaInfo.getPity4() / 8f)));
 		
 			if (random <= yellowChance || gachaInfo.getPity5() >= banner.getHardPity()) {
 				if (banner.getRateUpItems1().length > 0) {
@@ -142,7 +143,7 @@ public class GachaManager {
 				}
 				
 				if (itemId == 0) {
-					int typeChance = this.randomRange(banner.getMinItemType(), banner.getMaxItemType());
+					int typeChance = this.randomRange(banner.getBannerType() == BannerType.WEAPON ? 2 : 1, banner.getBannerType() == BannerType.EVENT ? 1 : 2);
 					if (typeChance == 1) {
 						itemId = getRandom(this.yellowAvatars);
 					} else {
@@ -163,7 +164,7 @@ public class GachaManager {
 				}
 				
 				if (itemId == 0) {
-					int typeChance = this.randomRange(banner.getMinItemType(), banner.getMaxItemType());
+					int typeChance = this.randomRange(banner.getBannerType() == BannerType.WEAPON ? 2 : 1, banner.getBannerType() == BannerType.EVENT ? 1 : 2);
 					if (typeChance == 1) {
 						itemId = getRandom(this.purpleAvatars);
 					} else {