Entities

Entities

Back to Home; see also Rendering.

Each legacy entity class a mod registers (EntityRegistry.registerModEntity / registerGlobalEntityID) becomes a modern entity type. Its instances are run by a host: a vanilla entity (PathfinderMob for living ones, an Enemy monster for IMobs) that constructs the legacy object and forwards ticking, AI, damage, death and drops, sounds, interaction, saving and spawn data to it. The legacy base classes (Entity, EntityLivingBase, EntityLiving, EntityCreature, EntityMob, EntityAgeable, EntityAnimal, EntityTameable) are real implementations on top of the host, so super calls compose as on 1.7.10: the legacy AI scheduler (EntityAITasks) runs the mod's tasks, the vanilla AI tasks are backed by the equivalent modern goals, navigation and move/look/jump helpers drive the host's own, DataWatcher values are synced to clients, legacy attributes map to modern ones, Forge's EntityConstructing event and IExtendedEntityProperties work (also for players), and addSpawn entries become biome modifiers.

On the client, renderers registered with RenderingRegistry.registerEntityRenderingHandler draw the entities: the legacy Render/RenderLiving code runs inside a render context that maps its OpenGL matrix and state calls onto the modern pose stack and buffers, legacy models (ModelBase, ModelBiped, ModelQuadruped, ...) emit real geometry, and Tessellator/immediate-mode (glBegin) geometry is assembled into quads with the matching modern render type (textured, translucent or additive). Biped renderers draw worn armour (vanilla layers or a mod's getArmorTexture) as render passes and the held item through the modern item renderer.