Unit 5: Gameplay components - Practice Quiz

1 What does 3D game development mainly involve?

2 Which object is commonly used to represent a character in a 3D game?

3 What is a 3D game environment?

4 What is the purpose of lighting in a 3D game?

5 What is an enemy in a game?

6 Which component usually gives an enemy its visible appearance?

7 What does an enemy's health value usually represent?

8 What is a spawn point used for when adding an enemy?

9 What is an AI behavior tree used for?

10 What does a leaf node commonly represent in a behavior tree?

11 Which behavior might an enemy perform in a behavior tree?

12 What does a selector node generally do in a behavior tree?

13 In a behavior tree, what can a condition check?

14 What is a timeline-based cutscene?

15 What does a timeline track usually control?

16 What is a keyframe in a timeline?

17 Which element can be controlled by a cutscene timeline?

18 What is immersive storytelling in a game?

19 Which feature can help make a game story more immersive?

20 How can the game environment support storytelling?

21 A player can see through parts of a wall when the camera moves close to it. Which change most directly addresses this problem?

22 A movable crate has a collider and a rigid body, but it passes through the floor when dropped at high speed. Which adjustment is most appropriate?

23 A large 3D level experiences frame-rate drops because hundreds of distant decorative objects are rendered. Which technique is best suited to reduce this cost?

24 A character moves at noticeably different speeds on computers with different frame rates. How should its per-frame movement distance be calculated?

25 An enemy should detect the player only when the player is nearby and not hidden behind a wall. Which combination should be used?

26 A navigation-controlled enemy reaches the player's previous location but does not continue following the moving player. What should the enemy controller do?

27 Several enemies spawn at exactly the same position and push one another into nearby walls. Which spawning method is most reliable?

28 An enemy attack animation plays, but the player takes damage before the weapon visually connects. What is the best correction?

29 A Selector node has the children Attack, Chase, and Patrol in that order. How does it normally choose an action?

30 An enemy must first move within range, then face the player, and finally attack. Which behavior-tree composite best represents this ordered requirement?

31 A chase branch should run only while the blackboard variable PlayerVisible is true. Which behavior-tree element should guard the branch?

32 An enemy continues a long patrol task even after seeing the player. Which change would make the AI react more quickly?

33 A cutscene camera moves correctly in the editor, but not during gameplay because the track has no target. What is most likely missing?

34 During a cutscene, the player can still move and disrupt the scene. Which solution best preserves the intended sequence?

35 A door must become permanently unlocked at a specific moment in a cutscene. Which timeline feature is best for invoking this gameplay event?

36 Two virtual cameras switch abruptly during a dialogue scene. Which adjustment would create a smoother visual transition?

37 A ruined laboratory should reveal its history without displaying a long text panel. Which approach best supports environmental storytelling?

38 A game allows the player to spare or defeat a rival, but later scenes remain identical. What improvement would make the choice feel more meaningful?

39 An urgent mission asks the player to rescue a character, but the player can spend hours on unrelated activities without consequences. Which change would reduce this narrative-gameplay conflict?

40 A companion repeatedly delivers the same emotional dialogue immediately after major events. Which design change would make the companion feel more responsive?

41 A 3D character moves uphill on a terrain mesh. Its controller uses world-space gravity and directly sets horizontal velocity each frame. The character intermittently becomes airborne when crossing steep slopes. Which change most directly preserves grounded motion while maintaining physically consistent gravity?

42 A physics-based 3D game produces different results at 30 FPS and 120 FPS because forces are applied inside the render update loop. Which architecture best addresses the problem?

43 A large open-world scene uses high-resolution meshes for every visible object. Frame time increases sharply when the camera looks across the map, even though many objects are far away. Which solution most effectively targets the primary bottleneck?

44 A multiplayer 3D game must prevent clients from declaring impossible player positions while keeping movement responsive. Which design provides the strongest authority model?

45 An enemy detects the player through a vision cone, but frequently loses and reacquires the target when the player moves near the cone boundary. Which design best prevents unstable state changes?

46 Several enemies pursue the player through a narrow corridor and repeatedly block one another. Their navigation paths are individually valid, but group movement is ineffective. Which improvement best addresses the issue?

47 An enemy should investigate the last known player location after line of sight is lost, but it should resume patrolling if no evidence is found. Which implementation most reliably supports this behavior?

48 An enemy's attack animation lasts 1.2 seconds, but damage should occur at the exact weapon-contact frame and only once per swing. Which solution is most robust?

49 A behavior tree contains a selector with children Attack, Chase, and Patrol. The Chase task returns Failure whenever the target is temporarily unreachable, causing the enemy to patrol instead of trying an alternative route. Which status change is most appropriate?

50 A behavior tree uses a reactive selector to choose between fleeing and attacking. While attacking, the enemy's health drops below the flee threshold, but the enemy continues the attack until completion. Which structural change best ensures immediate reprioritization?

51 A behavior tree's FindCover task writes a cover position to the blackboard. Later, MoveToCover sometimes reads a stale position from a previous encounter. What is the best correction?

52 A sequence node runs OpenDoor, MoveThroughDoor, and CloseDoor. If MoveThroughDoor fails because the player blocks the doorway, the enemy should retry movement without reopening the door. Which tree structure is most suitable?

53 A behavior tree performs expensive perception queries every tick for 100 enemies, causing CPU spikes. Which optimization preserves responsiveness while reducing unnecessary work?

54 A timeline cutscene moves a door using animation, but gameplay code also modifies the door transform. On playback, the door snaps unpredictably when the timeline ends. Which approach best prevents this conflict?

55 A cutscene must pause when the player opens a menu and resume at the same narrative position. Which timing strategy is most reliable?

56 A branching cutscene has dialogue, camera movement, and animation tracks. The player chooses a response during dialogue, but the next section starts one frame before the choice is registered. What design best avoids this race condition?

57 A timeline is authored at 60 FPS, but the game runs at variable frame rates. An object must reach its final position at exactly 5 seconds. Which method gives the most consistent result?

58 A horror game explains every threat through dialogue, reducing tension and player curiosity. Which redesign most strongly supports immersive storytelling?

59 A story-critical conversation can be missed because the player explores another area. The designers want to preserve agency without making the narrative incoherent. Which solution is strongest?

60 An interactive scene requires the player to walk toward a character, but a non-player character must reach the same location at nearly the same time. Which design best preserves the player's sense of control and scene credibility?