initial commit

java/src/game/ai/EntityAIWatchClosest.java

@@ -0,0 +1,99 @@
+package game.ai;
+
+import game.entity.Entity;
+import game.entity.types.EntityLiving;
+import game.world.WorldServer;
+
+public class EntityAIWatchClosest extends EntityAIBase
+{
+    protected EntityLiving theWatcher;
+
+    /** The closest entity which is being watched by this one. */
+    protected Entity closestEntity;
+
+    /** This is the Maximum distance that the AI will look for the Entity */
+    protected float maxDistanceForPlayer;
+    private int lookTime;
+    private float chance;
+    protected Class <? extends Entity > watchedClass;
+
+    public EntityAIWatchClosest(EntityLiving entitylivingIn, Class <? extends Entity > watchTargetClass, float maxDistance)
+    {
+        this.theWatcher = entitylivingIn;
+        this.watchedClass = watchTargetClass;
+        this.maxDistanceForPlayer = maxDistance;
+        this.chance = 0.02F;
+        this.setMutexBits(2);
+    }
+
+    public EntityAIWatchClosest(EntityLiving entitylivingIn, Class <? extends Entity > watchTargetClass, float maxDistance, float chanceIn)
+    {
+        this.theWatcher = entitylivingIn;
+        this.watchedClass = watchTargetClass;
+        this.maxDistanceForPlayer = maxDistance;
+        this.chance = chanceIn;
+        this.setMutexBits(2);
+    }
+
+    /**
+     * Returns whether the EntityAIBase should begin execution.
+     */
+    public boolean shouldExecute()
+    {
+        if (this.theWatcher.getRNG().floatv() >= this.chance)
+        {
+            return false;
+        }
+        else
+        {
+            if (this.theWatcher.getAttackTarget() != null)
+            {
+                this.closestEntity = this.theWatcher.getAttackTarget();
+            }
+
+            if (this.watchedClass == null)
+            {
+                this.closestEntity = this.theWatcher.worldObj.getClosestPlayerToEntity(this.theWatcher, (double)this.maxDistanceForPlayer);
+            }
+            else
+            {
+                this.closestEntity = ((WorldServer)this.theWatcher.worldObj).findNearestEntityWithinAABB(this.watchedClass, this.theWatcher.getEntityBoundingBox().expand((double)this.maxDistanceForPlayer, 3.0D, (double)this.maxDistanceForPlayer), this.theWatcher);
+            }
+
+            return this.closestEntity != null;
+        }
+    }
+
+    /**
+     * Returns whether an in-progress EntityAIBase should continue executing
+     */
+    public boolean continueExecuting()
+    {
+        return !this.closestEntity.isEntityAlive() ? false : (this.theWatcher.getDistanceSqToEntity(this.closestEntity) > (double)(this.maxDistanceForPlayer * this.maxDistanceForPlayer) ? false : this.lookTime > 0);
+    }
+
+    /**
+     * Execute a one shot task or start executing a continuous task
+     */
+    public void startExecuting()
+    {
+        this.lookTime = 40 + this.theWatcher.getRNG().zrange(40);
+    }
+
+    /**
+     * Resets the task
+     */
+    public void resetTask()
+    {
+        this.closestEntity = null;
+    }
+
+    /**
+     * Updates the task
+     */
+    public void updateTask()
+    {
+        this.theWatcher.getLookHelper().setLookPosition(this.closestEntity.posX, this.closestEntity.posY + (double)this.closestEntity.getEyeHeight(), this.closestEntity.posZ, 10.0F, (float)this.theWatcher.getVerticalFaceSpeed());
+        --this.lookTime;
+    }
+}