Examples with EntityImpactEvent org.terasology.physics.events.EntityImpactEvent used on opensource projects

Example 1 with EntityImpactEvent

use of org.terasology.physics.events.EntityImpactEvent in project Terasology by MovingBlocks.

the class PhysicsSystem method update.

@Override
public void update(float delta) {
    PerformanceMonitor.startActivity("Physics Renderer");
    physics.update(time.getGameDelta());
    PerformanceMonitor.endActivity();
    // Update the velocity from physics engine bodies to Components:
    Iterator<EntityRef> iter = physics.physicsEntitiesIterator();
    while (iter.hasNext()) {
        EntityRef entity = iter.next();
        RigidBodyComponent comp = entity.getComponent(RigidBodyComponent.class);
        RigidBody body = physics.getRigidBody(entity);
        if (body.isActive()) {
            body.getLinearVelocity(comp.velocity);
            body.getAngularVelocity(comp.angularVelocity);
            Vector3f vLocation = Vector3f.zero();
            body.getLocation(vLocation);
            Vector3f vDirection = new Vector3f(comp.velocity);
            float fDistanceThisFrame = vDirection.length();
            vDirection.normalize();
            fDistanceThisFrame = fDistanceThisFrame * delta;
            while (true) {
                HitResult hitInfo = physics.rayTrace(vLocation, vDirection, fDistanceThisFrame + 0.5f, DEFAULT_COLLISION_GROUP);
                if (hitInfo.isHit()) {
                    Block hitBlock = worldProvider.getBlock(hitInfo.getBlockPosition());
                    if (hitBlock != null) {
                        Vector3f vTravelledDistance = vLocation.sub(hitInfo.getHitPoint());
                        float fTravelledDistance = vTravelledDistance.length();
                        if (fTravelledDistance > fDistanceThisFrame) {
                            break;
                        }
                        if (hitBlock.isPenetrable()) {
                            if (!hitInfo.getEntity().hasComponent(BlockComponent.class)) {
                                entity.send(new EntityImpactEvent(hitInfo.getHitPoint(), hitInfo.getHitNormal(), comp.velocity, fDistanceThisFrame, hitInfo.getEntity()));
                                break;
                            }
                            // decrease the remaining distance to check if we hit a block
                            fDistanceThisFrame = fDistanceThisFrame - fTravelledDistance;
                            vLocation = hitInfo.getHitPoint();
                        } else {
                            entity.send(new BlockImpactEvent(hitInfo.getHitPoint(), hitInfo.getHitNormal(), comp.velocity, fDistanceThisFrame, hitInfo.getEntity()));
                            break;
                        }
                    } else {
                        break;
                    }
                } else {
                    break;
                }
            }
        }
    }
    if (networkSystem.getMode().isServer() && time.getGameTimeInMs() - TIME_BETWEEN_NETSYNCS > lastNetsync) {
        sendSyncMessages();
        lastNetsync = time.getGameTimeInMs();
    }
    List<CollisionPair> collisionPairs = physics.getCollisionPairs();
    for (CollisionPair pair : collisionPairs) {
        if (pair.b.exists()) {
            short bCollisionGroup = getCollisionGroupFlag(pair.b);
            short aCollidesWith = getCollidesWithGroupFlag(pair.a);
            if ((bCollisionGroup & aCollidesWith) != 0 || (pair.b.hasComponent(BlockComponent.class) && !pair.a.hasComponent(BlockComponent.class))) {
                pair.a.send(new CollideEvent(pair.b, pair.pointA, pair.pointB, pair.distance, pair.normal));
            }
        }
        if (pair.a.exists()) {
            short aCollisionGroup = getCollisionGroupFlag(pair.a);
            short bCollidesWith = getCollidesWithGroupFlag(pair.b);
            if ((aCollisionGroup & bCollidesWith) != 0 || (pair.a.hasComponent(BlockComponent.class) && !pair.b.hasComponent(BlockComponent.class))) {
                pair.b.send(new CollideEvent(pair.a, pair.pointB, pair.pointA, pair.distance, new Vector3f(pair.normal).invert()));
            }
        }
    }
}