# Godot Game Loop Lab

Project path: /projects/build-first-godot-game-loop/
Video-note path: /youtube-notes/build-first-godot-game-loop/

## Lab purpose

Practice checking whether a tiny game loop is complete enough to build on.

You have a tiny Godot prototype idea. The lab asks you to inspect whether it is a playable loop instead of a pile of disconnected scripts, scenes, assets, and tutorial fragments.

Use this note as a working sheet. The useful outcome is not a polished paragraph; it is a record that proves what you checked, what result you expected, what happened, and what you will do next. Keep the note next to the project path so the practice stays attached to a real maker outcome.

## Starter state

A Godot project exists with one scene or a design note for one scene. The learner has not added menus, art polish, accounts, online play, or a large save system.

## Target finished state

One small scene can start, accept player input, change state, show feedback, end or reset, and leave a note naming the next mechanic.

## Before starting

- Pick a one-screen interaction that can be tested without art polish.
- Name the player action before binding every possible key.
- Decide one visible signal that proves the game state changed.
- Keep save-state work to one small value if it is needed at all.
- Write what counts as done before adding more mechanics.

## Step-by-step lab

1. Open the project and name the current scene that should run first.
2. List the input actions the prototype needs and the behavior each action should trigger.
3. State the starting game state in one sentence.
4. State the target win, fail, or reset condition in one sentence.
5. Identify the object or script that owns the state transition.
6. Add or inspect one visible feedback signal such as text, color, score, sound, or position change.
7. Run the loop twice and record whether the same state transition still works.
8. Write one common bug you saw or expect, such as input not firing or collision not registering.
9. Choose one improvement idea and write why it can wait until the loop is stable.
10. Link the project note back to the Godot lesson page that explains the missing concept.

## Finished-state checks

- [ ] Current scene is clear.
- [ ] Input actions are named by intent.
- [ ] State starts in a known value.
- [ ] Win, fail, or reset condition can be triggered.
- [ ] Feedback appears when state changes.
- [ ] Restart behavior works twice.
- [ ] Score or status display is inspectable.
- [ ] Next improvement is small and deferred until the loop is stable.

## Common mistakes

- Adding art, menus, and multiple levels before one loop is testable.
- Binding raw keys everywhere instead of using named actions.
- Treating a collision problem as a scoring problem before proving contact.
- Building a save system before deciding which state matters.
- Calling the prototype done without a restart or reset path.

## Answer key

- A strong loop answer names the current scene, the input action, the state variable or state rule, and the visible feedback.
- The first proof is not that the game is fun; it is that the smallest loop repeats.
- If contact is uncertain, collision feedback comes before scoring or damage.
- The next mechanic should be written as one testable change, not a whole design document.
- The finished lab note should tell another learner how to run the scene and what result to expect.

## Commands, artifacts, or checks to inspect

```text
Open the current scene from the project browser.
Inspect Project Settings -> Input Map.
Run the scene and trigger the input action twice.
Reset the scene and verify the state returns to the starter value.
```

## Safety notes

- Do not turn a first loop into a full game plan.
- Do not copy a long script unless you can name which state it changes.
- Do not hide broken input behind art polish.

## Reflection questions

- What did the first check prove?
- Which output, reading, signal, or artifact changed your next step?
- Which tempting shortcut did you avoid?
- What should you study before expanding the project?
- What should be copied into your long-term project notebook?

## Related TopicLadder links

- [Build a First Godot Game Loop](/projects/build-first-godot-game-loop/)
- [Video notes for Build a First Godot Game Loop](/youtube-notes/build-first-godot-game-loop/)
- [Godot First Playable Loop](/learn/godot-first-playable-loop/)
- [Godot Input Action Cards](/downloads/godot-input-actions-first-pass.anki.tsv)
- [Check collision debugging next](/learn/godot-collision-debugging-basics/)
- [Practice index](/practice/)
- [Start Here](/start-here/)

## Project note template

Question:

Expected result:

Actual result:

Interpretation:

Next safe step:

This lab should leave behind a note that can be reopened later. If the note only says that something worked, it is not enough. Write the proof, the boundary, the thing you did not change, and the next step that would make the project easier to continue.

## How to judge the finished note

A finished note should let a future session restart the work without guessing. It should name the original question, the starting condition, the exact check that was performed, the result that was expected, the result that actually appeared, and the reason the next step follows from that result. If another learner cannot tell whether the project is blocked by knowledge, setup, parts, files, configuration, or safety boundaries, the note needs one more pass before the lab is complete.

The note should also keep scope small. A practice lab is not a full course, repair manual, or build diary. It is a checkpoint that proves one layer of understanding. When the lab exposes a missing prerequisite, link the next TopicLadder page instead of copying large source material. When the lab exposes a safety-sensitive question, write the question and stop before the page turns into instructions for work that requires manuals, supervision, or equipment-specific procedures.

## Repeatable run log

Run date:

Project state before the lab:

Smallest check performed:

Expected signal:

Actual signal:

Mistake avoided:

Related note, deck, or reference opened:

Next project action:

## Obsidian backlinks

Use these wiki links to connect this note inside a local maker vault:

- [[TopicLadder]]
- [[Maker Learning]]
- [[Godot Game Loop Lab]]
- [[Build a First Godot Game Loop]]
- [[Project Practice]]
- [[Beginner game-loop inspection]]
- [[Player input game state win or fail condition visible feedback restart behavior ]]
- [[Obsidian Project Notes]]
- [[Anki Review Cards]]
- [[Practice Tasks]]

## Source and next routes

Source: https://topicladder.com/practice/godot-game-loop-lab/

- [Build a First Godot Game Loop](/projects/build-first-godot-game-loop/)
- [Godot First Playable Loop](/learn/godot-first-playable-loop/)
- [Check collision debugging next](/learn/godot-collision-debugging-basics/)