fixes to combust event so that it is raised only once on combustion.

minor fixes to imports

src/main/java/net/minecraft/server/Entity.java

@@ -1,14 +1,12 @@
 package net.minecraft.server;
 
-// CraftBukkit start
-import org.bukkit.craftbukkit.entity.CraftEntity;
-import org.bukkit.craftbukkit.entity.CraftLivingEntity;
-import org.bukkit.craftbukkit.entity.CraftPlayer;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.event.Event.Type;
 import org.bukkit.event.entity.EntityCombustEvent;
 import org.bukkit.event.entity.EntityDamageByBlockEvent;
+import org.bukkit.event.entity.EntityDamageByEntityEvent;
 import org.bukkit.event.entity.EntityDamageEvent;
+import org.bukkit.event.entity.EntityDamageEvent.DamageCause;
 // CraftBukkit end
 
 import java.util.List;
@@ -221,9 +219,12 @@ public abstract class Entity {
                 if (Z % 20 == 0) {
                     // CraftBukkit start
                     if(this instanceof EntityLiving) {
-                        CraftServer server = ((WorldServer)l).getServer();
+                        CraftServer server = ((WorldServer) l).getServer();
+                        org.bukkit.entity.Entity damagee = this.getBukkitEntity();
+                        DamageCause damageType = EntityDamageEvent.DamageCause.DROWNING;
+                        int damageDone = 1;
 
-                        EntityDamageEvent ede = new EntityDamageEvent(this.getBukkitEntity(), EntityDamageEvent.DamageCause.DROWNING, 1);
+                        EntityDamageEvent ede = new EntityDamageEvent(damagee, damageType, damageDone);
                         server.getPluginManager().callEvent(ede);
 
                         if (!ede.isCancelled()){
@@ -254,19 +255,30 @@ public abstract class Entity {
         if (!ae) {
             // CraftBukkit start
             if(this instanceof EntityLiving) {
-                CraftServer server = ((WorldServer)l).getServer();
+                CraftServer server = ((WorldServer) l).getServer();
+                org.bukkit.entity.Entity damagee = this.getBukkitEntity();
+                DamageCause damageType = EntityDamageEvent.DamageCause.LAVA;
+                int damageDone = 4;
 
-                EntityDamageByBlockEvent ede = new EntityDamageByBlockEvent(null, this.getBukkitEntity(), EntityDamageEvent.DamageCause.LAVA, 4);
+                EntityDamageByBlockEvent ede = new EntityDamageByBlockEvent(null, damagee, damageType, damageDone);
                 server.getPluginManager().callEvent(ede);
                 if (!ede.isCancelled()){
                     a(((Entity) (null)), ede.getDamage());
                 }
 
-                EntityCombustEvent ece = new EntityCombustEvent(Type.ENTITY_COMBUST, this.getBukkitEntity());
+                if(Z <= 0){
-                server.getPluginManager().callEvent(ece);
+                    // not on fire yet
-                if (!ece.isCancelled()){
+                    Type eventType = Type.ENTITY_COMBUST;
+                    EntityCombustEvent ece = new EntityCombustEvent(eventType, damagee);
+                    server.getPluginManager().callEvent(ece);
+                    if (!ece.isCancelled()){
+                        Z = 600;
+                    }
+                } else {
+                    // reset fire level back to max
                     Z = 600;
                 }
+                
             } else {
                 a(((Entity) (null)), 4);
                 Z = 600;
@@ -473,9 +485,24 @@ public abstract class Entity {
             b(1);
             if (!flag2) {
                 Z++;
-                if (Z == 0) {
+                //CraftBukkit start
+                if(Z <= 0){
+                    // not on fire yet
+                    CraftServer server = ((WorldServer) l).getServer();
+                    org.bukkit.entity.Entity damagee = this.getBukkitEntity();
+                    Type eventType = Type.ENTITY_COMBUST;
+                    
+                    EntityCombustEvent ece = new EntityCombustEvent(eventType, damagee);
+                    server.getPluginManager().callEvent(ece);
+                    
+                    if (!ece.isCancelled()){
+                        Z = 300;
+                    }
+                } else {
+                    // reset fire level back to max
                     Z = 300;
                 }
+                //CraftBukkit end
             }
         } else if (Z <= 0) {
             Z = -Y;
@@ -505,9 +532,12 @@ public abstract class Entity {
         if (!ae) {
             // CraftBukkit start
             if(this instanceof EntityLiving) {
-                CraftServer server = ((WorldServer)l).getServer();
+                CraftServer server = ((WorldServer) l).getServer();
+                org.bukkit.entity.Entity damagee = this.getBukkitEntity();
+                DamageCause damageType = EntityDamageEvent.DamageCause.FIRE;
+                int damageDone = i1;
 
-                EntityDamageEvent ede = new EntityDamageEvent(this.getBukkitEntity(), EntityDamageEvent.DamageCause.FIRE, i1);
+                EntityDamageEvent ede = new EntityDamageEvent(damagee, damageType, damageDone);
                 server.getPluginManager().callEvent(ede);
 
                 if (!ede.isCancelled()){

src/main/java/net/minecraft/server/EntityArrow.java

@@ -1,12 +1,9 @@
 package net.minecraft.server;
 
 import java.util.List;
-import java.util.Random;
 
 //CraftBukkit start
 import org.bukkit.craftbukkit.entity.CraftArrow;
-import org.bukkit.craftbukkit.entity.CraftEntity;
-import org.bukkit.craftbukkit.entity.CraftLivingEntity;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.event.entity.EntityDamageByProjectileEvent;
 import org.bukkit.event.entity.EntityDamageEvent;

src/main/java/net/minecraft/server/EntityBoat.java

@@ -5,7 +5,6 @@ import java.util.Random;
 
 // CraftBukkit start
 import org.bukkit.Location;
-import org.bukkit.craftbukkit.entity.CraftArrow;
 import org.bukkit.craftbukkit.entity.CraftBoat;
 import org.bukkit.craftbukkit.entity.CraftEntity;
 import org.bukkit.craftbukkit.CraftMappable;

src/main/java/net/minecraft/server/EntityFireball.java

@@ -3,11 +3,7 @@ package net.minecraft.server;
 import java.util.List;
 import java.util.Random;
 
-//CraftBukkit start
-import org.bukkit.craftbukkit.entity.CraftEgg;
-import org.bukkit.craftbukkit.entity.CraftEntity;
 import org.bukkit.craftbukkit.entity.CraftFireball;
-import org.bukkit.craftbukkit.entity.CraftLivingEntity;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.event.entity.EntityDamageByProjectileEvent;
 import org.bukkit.event.entity.EntityDamageEvent;

src/main/java/net/minecraft/server/EntityGhast.java

@@ -4,7 +4,6 @@ import java.util.List;
 import java.util.Random;
 
 import org.bukkit.craftbukkit.CraftServer;
-import org.bukkit.craftbukkit.entity.CraftAnimals;
 import org.bukkit.craftbukkit.entity.CraftGhast;
 
 public class EntityGhast extends EntityFlying implements IMobs {

src/main/java/net/minecraft/server/EntityItem.java

@@ -3,7 +3,6 @@ package net.minecraft.server;
 import java.util.Random;
 
 import org.bukkit.craftbukkit.CraftServer;
-import org.bukkit.craftbukkit.entity.CraftAnimals;
 import org.bukkit.craftbukkit.entity.CraftItem;
 
 public class EntityItem extends Entity {

src/main/java/net/minecraft/server/EntityLiving.java

@@ -4,7 +4,6 @@ import java.util.List;
 import java.util.Random;
 
 import org.bukkit.craftbukkit.CraftServer;
-import org.bukkit.craftbukkit.entity.CraftAnimals;
 import org.bukkit.craftbukkit.entity.CraftLivingEntity;
 
 public abstract class EntityLiving extends Entity {

src/main/java/net/minecraft/server/EntityMinecart.java

@@ -5,7 +5,6 @@ import java.util.Random;
 
 // CraftBukkit start
 import org.bukkit.Location;
-import org.bukkit.craftbukkit.entity.CraftEgg;
 import org.bukkit.craftbukkit.entity.CraftEntity;
 import org.bukkit.craftbukkit.entity.CraftPoweredMinecart;
 import org.bukkit.craftbukkit.entity.CraftStorageMinecart;