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package at.hannibal2.skyhanni.events
import net.minecraft.client.Minecraft
import net.minecraft.entity.Entity
import net.minecraft.entity.item.EntityArmorStand
import net.minecraft.entity.item.EntityItemFrame
import java.util.function.Consumer
class RenderEntityOutlineEvent(theType: Type?, potentialEntities: HashSet<Entity>?) :
LorenzEvent() {
/**
* The phase of the event (see [Type]
*/
var type: Type? = null
/**
* The entities to outline. This is progressively cumulated from [.entitiesToChooseFrom]
*/
var entitiesToOutline: HashMap<Entity, Int>? = null
/**
* The entities we can outline. Note that this set and [.entitiesToOutline] are disjoint at all times.
*/
var entitiesToChooseFrom: HashSet<Entity>? = null
/**
* Constructs the event, given the type and optional entities to outline.
*
*
* This will modify {@param potentialEntities} internally, so make a copy before passing it if necessary.
*
* @param theType of the event (see [Type]
*/
init {
type = theType
entitiesToChooseFrom = potentialEntities
if (potentialEntities != null) {
entitiesToOutline = HashMap(potentialEntities.size)
}
}
/**
* Conditionally queue entities around which to render entities
* Selects from the pool of [.entitiesToChooseFrom] to speed up the predicate testing on subsequent calls.
* Is more efficient (theoretically) than calling [.queueEntityToOutline] for each entity because lists are handled internally.
*
*
* This function loops through all entities and so is not very efficient.
* It's advisable to encapsulate calls to this function with global checks (those not dependent on an individual entity) for efficiency purposes.
*
* @param outlineColor a function to test
*/
fun queueEntitiesToOutline(outlineColor: ((entity: Entity) -> Int?)? = null) {
if (outlineColor == null) {
return
}
if (entitiesToChooseFrom == null) {
computeAndCacheEntitiesToChooseFrom()
}
val itr: MutableIterator<Entity> = entitiesToChooseFrom!!.iterator()
while (itr.hasNext()) {
val e: Entity = itr.next()
val i: Int? = outlineColor(e)
if (i != null) {
entitiesToOutline!![e] = i
itr.remove()
}
}
}
/**
* Adds a single entity to the list of the entities to outline
*
* @param entity the entity to add
* @param outlineColor the color with which to outline
*/
fun queueEntityToOutline(entity: Entity?, outlineColor: Int) {
if (entity == null) {
return
}
if (entitiesToChooseFrom == null) {
computeAndCacheEntitiesToChooseFrom()
}
if (!entitiesToChooseFrom!!.contains(entity)) {
return
}
entitiesToOutline!![entity] = outlineColor
entitiesToChooseFrom!!.remove(entity)
}
/**
* Used for on-the-fly generation of entities. Driven by event handlers in a decentralized fashion
*/
private fun computeAndCacheEntitiesToChooseFrom() {
val entities: List<Entity> = Minecraft.getMinecraft().theWorld.getLoadedEntityList()
// Only render outlines around non-null entities within the camera frustum
entitiesToChooseFrom = HashSet(entities.size)
// Only consider entities that aren't invisible armorstands to increase FPS significantly
entities.forEach(Consumer<Entity> { e: Entity? ->
if (e != null && !(e is EntityArmorStand && e.isInvisible()) && e !is EntityItemFrame) {
entitiesToChooseFrom!!.add(e)
}
})
entitiesToOutline = HashMap(entitiesToChooseFrom!!.size)
}
/**
* The phase of the event.
* [.XRAY] means that this directly precedes entities whose outlines are rendered through walls (Vanilla 1.9+)
* [.NO_XRAY] means that this directly precedes entities whose outlines are rendered only when visible to the client
*/
enum class Type {
XRAY,
NO_XRAY
}
}
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