no movement buffs while flying, cannot fly if you have a movement buff applied

src/engine/objects/AbstractCharacter.java

@@ -31,6 +31,7 @@ import engine.net.ByteBufferWriter;
 import engine.net.DispatchMessage;
 import engine.net.client.msg.UpdateStateMsg;
 import engine.powers.EffectsBase;
+import engine.powers.effectmodifiers.AbstractEffectModifier;
 import engine.server.MBServerStatics;
 import org.pmw.tinylog.Logger;
 
@@ -499,6 +500,14 @@ public abstract class AbstractCharacter extends AbstractWorldObject {
         if (bonus != null && !bonus.getBool(ModType.NoMod, SourceType.Fly) && bonus.getBool(ModType.Fly, SourceType.None) && flyer.isAlive())
             canFly = true;
 
+        for(Effect eff : flyer.effects.values()){
+            for(AbstractEffectModifier mod : eff.getEffectModifiers()){
+                if(mod.modType.equals(ModType.Speed)){
+                    canFly = false;
+                }
+            }
+        }
+
         return canFly;
 
     }