// TODO: This should be in a separate system
@ReceiveEvent(components = {HealthComponent.class})
public void onLand(VerticalCollisionEvent event, EntityRef entity) {
HealthComponent health = entity.getComponent(HealthComponent.class);
if (event.getVelocity().y < 0 && -event.getVelocity().y > health.fallingDamageSpeedThreshold) {
int damage =
(int)
((-event.getVelocity().y - health.fallingDamageSpeedThreshold)
* health.excessSpeedDamageMultiplier);
if (damage > 0) {
checkDamage(
entity, damage, EngineDamageTypes.PHYSICAL.get(), EntityRef.NULL, EntityRef.NULL);
}
}
}
static void damageEntity(AttackEvent event, EntityRef targetEntity) {
int damage = 1;
Prefab damageType = EngineDamageTypes.PHYSICAL.get();
// Calculate damage from item
ItemComponent item = event.getDirectCause().getComponent(ItemComponent.class);
if (item != null) {
damage = item.baseDamage;
if (item.damageType != null) {
damageType = item.damageType;
}
}
targetEntity.send(
new DoDamageEvent(damage, damageType, event.getInstigator(), event.getDirectCause()));
// consume the event so that the health system can take priority over default engine behavior
event.consume();
}
@ReceiveEvent(components = {HealthComponent.class})
public void onCrash(HorizontalCollisionEvent event, EntityRef entity) {
HealthComponent health = entity.getComponent(HealthComponent.class);
Vector3f vel = new Vector3f(event.getVelocity());
vel.y = 0;
float speed = vel.length();
if (speed > health.horizontalDamageSpeedThreshold) {
int damage =
(int)
((speed - health.horizontalDamageSpeedThreshold)
* health.excessSpeedDamageMultiplier);
if (damage > 0) {
checkDamage(
entity, damage, EngineDamageTypes.PHYSICAL.get(), EntityRef.NULL, EntityRef.NULL);
}
}
}
