GameplayKit

1. Entities and Components

   Covers GKEntity, GKComponent, GKComponentSystem.

2. State Machines

   Covers GKState, GKStateMachine.

3. Spatial Partitioning

   Covers GKQuadtree, GKQuadtreeNode, GKOctree, GKOctreeNode.

4. Strategists

   Covers GKStrategist, GKMinmaxStrategist, GKMonteCarloStrategist, GKGameModel.

5. Decision Trees

   Covers GKDecisionTree, GKDecisionNode.

6. Pathfinding

   Covers GKGraph, GKObstacleGraph, GKMeshGraph, GKGridGraph.

7. Agents, Goals, and Behaviors

   Covers GKAgent, GKAgent2D, GKAgent3D, GKGoal.

8. Obstacles

   Covers GKObstacle, GKCircleObstacle, GKSphereObstacle, GKPolygonObstacle.

9. Procedural Noise

   Covers GKNoiseSource, GKNoise, GKNoiseMap, GKCoherentNoiseSource.

10. Randomization

    Covers GKRandom, GKRandomSource, GKARC4RandomSource, GKLinearCongruentialRandomSource.

11. Rule Systems

    Covers GKRule, GKNSPredicateRule, GKRuleSystem.

12. Xcode and SpriteKit Integration

    Covers GKScene, GKSceneRootNodeType, GKSKNodeComponent.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.

• Foundation App Frameworks
• Foundation Models App Frameworks
• Foveated Streaming Graphics and Games
• FSKit System
• Game Controller Graphics and Games
• GameKit Graphics and Games
• GameSave Graphics and Games
• GeoToolbox App Frameworks
• GLKit Graphics and Games
• Group Activities Media
• GSS System
• HealthKit App Services