From 45d0ff46ae3d39777e5593375ccdb8c26ef0c05c Mon Sep 17 00:00:00 2001
From: Austin Mayes <almayes@trevecca.edu>
Date: Wed, 19 Jun 2019 11:13:47 -0500
Subject: [PATCH] Add minumum version requirements to mutations

---
 .../java/tc/oc/pgm/mutation/Mutation.java     | 34 +++++++++++++++----
 1 file changed, 28 insertions(+), 6 deletions(-)

diff --git a/PGM/src/main/java/tc/oc/pgm/mutation/Mutation.java b/PGM/src/main/java/tc/oc/pgm/mutation/Mutation.java
index 75e2a9c..b3f7a22 100644
--- a/PGM/src/main/java/tc/oc/pgm/mutation/Mutation.java
+++ b/PGM/src/main/java/tc/oc/pgm/mutation/Mutation.java
@@ -7,8 +7,11 @@ import net.md_5.bungee.api.ChatColor;
 import net.md_5.bungee.api.chat.BaseComponent;
 import net.md_5.bungee.api.chat.HoverEvent;
 import net.md_5.bungee.api.chat.TranslatableComponent;
+import org.bukkit.Bukkit;
 import org.bukkit.Material;
+import org.bukkit.entity.Player;
 import tc.oc.commons.core.chat.Component;
+import tc.oc.minecraft.protocol.MinecraftVersion;
 import tc.oc.pgm.PGM;
 import tc.oc.pgm.mutation.types.MutationModule;
 import tc.oc.pgm.mutation.types.kit.*;
@@ -27,22 +30,22 @@ public enum Mutation {
     HARDCORE   (HardcoreMutation.class,    Material.GOLDEN_APPLE),
     JUMP       (JumpMutation.class,        Material.FEATHER),
     EXPLOSIVE  (ExplosiveMutation.class,   Material.FLINT_AND_STEEL),
-    ELYTRA     (ElytraMutation.class,      Material.ELYTRA),
+    ELYTRA     (ElytraMutation.class,      Material.ELYTRA, MinecraftVersion.MINECRAFT_1_9),
     PROJECTILE (ProjectileMutation.class,  Material.TIPPED_ARROW),
     ENCHANTMENT(EnchantmentMutation.class, Material.ENCHANTMENT_TABLE),
     POTION     (PotionMutation.class,      Material.POTION),
-    EQUESTRIAN (EquestrianMutation.class,  Material.SADDLE),
+    EQUESTRIAN (EquestrianMutation.class,  Material.SADDLE, MinecraftVersion.MINECRAFT_1_9),
     HEALTH     (HealthMutation.class,      Material.COOKED_BEEF),
-    GLOW       (GlowMutation.class,        Material.GLOWSTONE_DUST, false),
+    GLOW       (GlowMutation.class,        Material.GLOWSTONE_DUST, MinecraftVersion.MINECRAFT_1_9),
     STEALTH    (StealthMutation.class,     Material.THIN_GLASS),
     ARMOR      (ArmorMutation.class,       Material.DIAMOND_CHESTPLATE),
     MOBS       (MobsMutation.class,        Material.MONSTER_EGG),
     LIGHTNING  (LightningMutation.class,   Material.JACK_O_LANTERN),
     BOMBER     (BomberMutation.class,      Material.TNT),
     BREAD      (BreadMutation.class,       Material.BREAD),
-    BOAT       (BoatMutation.class,        Material.BOAT, false),
+    BOAT       (BoatMutation.class,        Material.BOAT, MinecraftVersion.MINECRAFT_1_9),
     TOOLS      (ToolsMutation.class,       Material.DIAMOND_PICKAXE),
-    APOCALYPSE (ApocalypseMutation.class,  Material.NETHER_STAR);
+    APOCALYPSE (ApocalypseMutation.class,  Material.NETHER_STAR, false);
 
     public static final String TYPE_KEY = "mutation.type.";
     public static final String DESCRIPTION_KEY = ".desc";
@@ -50,15 +53,25 @@ public enum Mutation {
     private final @Nullable Class<? extends MutationModule> loader;
     private final Material guiDisplay;
     private final boolean pollable;
+    private final MinecraftVersion minimumVersion;
+
+    Mutation(@Nullable Class<? extends MutationModule> loader, Material guiDisplay, MinecraftVersion minimumVersion) {
+        this(loader, guiDisplay, true, minimumVersion);
+    }
 
     Mutation(@Nullable Class<? extends MutationModule> loader, Material guiDisplay) {
         this(loader, guiDisplay, true);
     }
 
     Mutation(@Nullable Class<? extends MutationModule> loader, Material guiDisplay, boolean pollable) {
+        this(loader, guiDisplay, pollable, MinecraftVersion.MINECRAFT_1_4_7);
+    }
+
+    Mutation(@Nullable Class<? extends MutationModule> loader, Material guiDisplay, boolean pollable, MinecraftVersion minimumVersion) {
         this.loader = loader;
         this.guiDisplay = guiDisplay;
         this.pollable = pollable;
+        this.minimumVersion = minimumVersion;
     }
 
     public Class<? extends MutationModule> loader() {
@@ -70,7 +83,16 @@ public enum Mutation {
     }
 
     public boolean isPollable() {
-        return pollable;
+        if (!pollable) return false;
+
+        double total = Bukkit.getOnlinePlayers().size();
+        double withSupport = 0;
+        for (Player player : Bukkit.getOnlinePlayers()) {
+            if (MinecraftVersion.atLeast(minimumVersion, player.getProtocolVersion()))
+                withSupport++;
+        }
+
+        return (withSupport / total) > .75;
     }
 
     public String getName() {