wip hitbox rendering

src/main/java/de/bixilon/minosoft/gui/rendering/entities/feature/EntityRenderFeature.kt

@@ -33,7 +33,12 @@ abstract class EntityRenderFeature(val renderer: EntityRenderer<*>) : Comparable
 
     abstract fun draw()
 
-    open fun compareByDistance(other: EntityRenderFeature): Int = 0
+    open fun compareByDistance(other: EntityRenderFeature): Int {
+        // TODO: optimize, cache
+        val a = (renderer.info.eyePosition - renderer.renderer.context.camera.view.view.eyePosition).length2()
+        val b = (renderer.info.eyePosition - renderer.renderer.context.camera.view.view.eyePosition).length2()
+        return a.compareTo(b)
+    }
 
     override fun compareTo(other: EntityRenderFeature): Int {
         var compare = priority.compareTo(other.priority)

src/main/java/de/bixilon/minosoft/gui/rendering/entities/hitbox/HitboxFeature.kt

@@ -13,12 +13,37 @@
 
 package de.bixilon.minosoft.gui.rendering.entities.hitbox
 
+import de.bixilon.minosoft.data.text.formatting.color.ChatColors
 import de.bixilon.minosoft.gui.rendering.entities.feature.EntityRenderFeature
 import de.bixilon.minosoft.gui.rendering.entities.renderer.EntityRenderer
+import de.bixilon.minosoft.gui.rendering.util.mesh.LineMesh
+import de.bixilon.minosoft.gui.rendering.util.mesh.Mesh
 
 class HitboxFeature(renderer: EntityRenderer<*>) : EntityRenderFeature(renderer) {
+    private val shader = renderer.renderer.context.shaders.genericColorShader
+    private var mesh: LineMesh? = null
+
+    override fun reset() {
+        unload()
+    }
+
+    override fun update(millis: Long) {
+        unload()
+        val mesh = LineMesh(renderer.renderer.context)
+        mesh.drawLazyAABB(renderer.entity.renderInfo.cameraAABB, renderer.entity.hitboxColor ?: ChatColors.WHITE)
+    }
+
 
     override fun draw() {
-        TODO("Not yet implemented")
+        val mesh = this.mesh ?: return
+        if (mesh.state != Mesh.MeshStates.LOADED) mesh.load()
+        shader.use()
+        mesh.draw()
+    }
+
+    override fun unload() {
+        val mesh = this.mesh ?: return
+        this.mesh = null
+        renderer.renderer.queue += { mesh.unload() }
     }
 }

src/main/java/de/bixilon/minosoft/gui/rendering/entities/renderer/EntityRenderer.kt

@@ -26,6 +26,7 @@ abstract class EntityRenderer<E : Entity>(
 ) {
     val features = FeatureManager(this)
     val visibility = EntityVisibility(this)
+    val info = entity.renderInfo
 
     val hitbox = HitboxFeature(this).register()