public void update(float delta) {
for (EntityRef entity :
entityManager.iteratorEntities(
SimpleAIComponent.class, CharacterMovementComponent.class, LocationComponent.class)) {
LocationComponent location = entity.getComponent(LocationComponent.class);
SimpleAIComponent ai = entity.getComponent(SimpleAIComponent.class);
CharacterMovementComponent moveComp = entity.getComponent(CharacterMovementComponent.class);
Vector3f worldPos = location.getWorldPosition();
moveComp.getDrive().set(0, 0, 0);
// TODO: shouldn't use local player, need some way to find nearest player
LocalPlayer localPlayer = CoreRegistry.get(LocalPlayer.class);
if (localPlayer != null) {
Vector3f dist = new Vector3f(worldPos);
dist.sub(localPlayer.getPosition());
double distanceToPlayer = dist.lengthSquared();
if (distanceToPlayer > 6 && distanceToPlayer < 16) {
// Head to player
ai.movementTarget.set(localPlayer.getPosition());
ai.followingPlayer = true;
entity.saveComponent(ai);
} else {
// Random walk
if (Terasology.getInstance().getTimeInMs() - ai.lastChangeOfDirectionAt > 12000
|| ai.followingPlayer) {
ai.movementTarget.set(
worldPos.x + random.randomFloat() * 500,
worldPos.y,
worldPos.z + random.randomFloat() * 500);
ai.lastChangeOfDirectionAt = Terasology.getInstance().getTimeInMs();
ai.followingPlayer = false;
entity.saveComponent(ai);
}
}
Vector3f targetDirection = new Vector3f();
targetDirection.sub(ai.movementTarget, worldPos);
targetDirection.normalize();
moveComp.setDrive(targetDirection);
float yaw = (float) Math.atan2(targetDirection.x, targetDirection.z);
AxisAngle4f axisAngle = new AxisAngle4f(0, 1, 0, yaw);
location.getLocalRotation().set(axisAngle);
entity.saveComponent(moveComp);
entity.saveComponent(location);
}
}
}
public float distanceToEntity(EntityRef target) {
Transform t = new Transform();
getMotionState().getWorldTransform(t);
Matrix4f tMatrix = new Matrix4f();
t.getMatrix(tMatrix);
Vector3f blockPlayer = new Vector3f();
tMatrix.get(blockPlayer);
LocationComponent loc = target.getComponent(LocationComponent.class);
if (loc != null) blockPlayer.sub(loc.getWorldPosition());
else blockPlayer.sub(new Vector3f());
return blockPlayer.length();
}
private void checkForLootedBlocks() {
LocalPlayer player = CoreRegistry.get(LocalPlayer.class);
// to send blocks to minions, some needed classes
EntityRef playerent = player.getEntity();
LocalPlayerComponent localPlayerComp = playerent.getComponent(LocalPlayerComponent.class);
MinionBarComponent inventory = null;
EntityRef closestminion = null;
if (localPlayerComp.minionMode) {
inventory = playerent.getComponent(MinionBarComponent.class);
}
for (int i = _blocks.size() - 1; i >= 0; i--) {
BlockRigidBody b = _blocks.get(i);
if (b._temporary) continue;
float closestDist = 99999;
if (inventory != null) {
// check for the closest minion
Iterator<EntityRef> it = inventory.MinionSlots.iterator();
while (it.hasNext()) {
EntityRef minion = it.next();
if (b.distanceToEntity(minion) < closestDist) {
closestDist = b.distanceToEntity(minion);
closestminion = minion;
}
}
}
if (localPlayerComp.minionMode) {
if (closestDist < 8 && !b._picked) {
b._picked = true;
}
} else {
closestDist = b.distanceToPlayer();
// Check if the block is close enough to the player
if (b.distanceToPlayer() < 8.0f && !b._picked) {
// Mark it as picked and remove it from the simulation
b._picked = true;
}
}
// Block was marked as being picked
if (b._picked && closestDist < 32.0f) {
// Animate the movement in direction of the player
if (closestDist > 1.0) {
Transform t = new Transform();
b.getMotionState().getWorldTransform(t);
Matrix4f tMatrix = new Matrix4f();
t.getMatrix(tMatrix);
Vector3f blockPlayer = new Vector3f();
tMatrix.get(blockPlayer);
if (localPlayerComp.minionMode && closestminion != null) {
LocationComponent minionloc = closestminion.getComponent(LocationComponent.class);
if (minionloc != null) blockPlayer.sub(minionloc.getWorldPosition());
else blockPlayer.sub(new Vector3f());
} else {
blockPlayer.sub(new Vector3f(player.getPosition()));
}
blockPlayer.normalize();
blockPlayer.scale(-16000f);
b.applyCentralImpulse(blockPlayer);
} else {
// TODO: Handle full inventories
// TODO: Loot blocks should be entities
// Block was looted (and reached the player)
Block block = BlockManager.getInstance().getBlock(b.getType());
EntityRef blockItem = _blockItemFactory.newInstance(block.getBlockFamily());
if (localPlayerComp.minionMode) {
if (closestminion != null) {
closestminion.send(new ReceiveItemEvent(blockItem));
}
} else {
playerent.send(new ReceiveItemEvent(blockItem));
}
ItemComponent itemComp = blockItem.getComponent(ItemComponent.class);
if (itemComp != null && !itemComp.container.exists()) {
blockItem.destroy();
}
AudioManager.play(new AssetUri(AssetType.SOUND, "engine:Loot"));
_blocks.remove(i);
_discreteDynamicsWorld.removeRigidBody(b);
}
}
}
}