Activate a midpoint checkpoint

Worked example

A checkpoint trigger and safe spawn marker serve different roles. The trigger notices arrival, while the marker specifies a collision-free return location above a platform. Scaffold C-CHECKPOINT — A safe checkpoint respawn Setup: Add this pattern to a separate Node2D level root with child Player using C-PLATFORM. Call set_checkpoint with a safe global position when a player reaches a checkpoint Area2D; call respawn when entering a fall zone. This code does not connect Area2D automatically; select the area body_entered signal in editor and call these methods from its handler after checking the player group. Respawn is deferred because a physics callback may be active. ```gdscript extends Node2D @onready var player: CharacterBody2D = $Player var checkpoint: Vector2 func _ready() -> void: checkpoint = player.global_position func set_checkpoint(safe_position: Vector2) -> void: checkpoint = safe_position func respawn() -> void: _apply_respawn.call_deferred() func _apply_respawn() -> void: player.global_position = checkpoint player.velocity = Vector2.ZERO ```

A safe checkpoint respawn

GDScript (Godot 4, not Scratch, Python, JavaScript or C#). Scaffold C-CHECKPOINT. Copy starts from this text. The desk does not run it.

Scene and node setup

Add this pattern to a separate Node2D level root with child Player using C-PLATFORM. Call set_checkpoint with a safe global position when a player reaches a checkpoint Area2D; call respawn when entering a fall zone. This code does not connect Area2D automatically; select the area body_entered signal in editor and call these methods from its handler after checking the player group. Respawn is deferred because a physics callback may be active.

extends Node2D
@onready var player: CharacterBody2D = $Player
var checkpoint: Vector2
func _ready() -> void:
    checkpoint = player.global_position
func set_checkpoint(safe_position: Vector2) -> void:
    checkpoint = safe_position
func respawn() -> void:
    _apply_respawn.call_deferred()
func _apply_respawn() -> void:
    player.global_position = checkpoint
    player.velocity = Vector2.ZERO

Checks to run in the editor

• A fall returns to last safe point, not origin.
• Player has no leftover falling velocity on return.

Native Godot 4.7.2.stable.official.ed1daf0bf headless compile and representative node-tree/runtime tests passed; see native-qa-results.json. Visual UI, audible output, exports and website submission still need separate checks.

Activate a midpoint checkpoint — evidence task

1. 1. Add a midpoint Area2D and safe Marker2D.
2. 2. Activate, advance, fall and verify the new respawn location.

Deliverable. Checkpoint project and before/after fall tests.

Acceptance checks

• VGC-L066-T1. Before activation, falls return to start.
• VGC-L066-T2. After activation, falls return to the midpoint safely.

Understanding question. Why store the Marker2D global_position rather than its local position?

Include a downloadable project ZIP with project.godot, .tscn, .gd and original asset files when code changes. A private, teacher-accessible download link to that ZIP is equivalent. Screenshots or a playthrough do not replace editable source.

If this is still shaky. Use one checkpoint on a broad platform and keep the camera fixed until respawn is reliable. Start with the first assigned task and re-run its acceptance test before adding the remaining feature.

Optional extra. Compare start-only retries with a midpoint checkpoint using the same route. Document one changed parameter, your prediction, and the observed effect; optional, not required for completion.

Turn in typed notes and a JPEG, PNG, or WebP screenshot. One https address is stored as text and is not opened, extracted, or run. An MP3, WAV, M4A, MP4, or WebM file up to 4 MB can show a demo. The demo does not replace editable source. Zip and code files are refused. If there is no private link, keep the project on the family computer and review the code in person.

• Your first 2D game

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