91 lines
3.4 KiB
Markdown
91 lines
3.4 KiB
Markdown
# Editing a Step
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Each step in Cagire contains a Forth script. When the sequencer reaches that step, it runs the script to produce sound. This is where you write your music. Press `Enter` when hovering over any step to open the code editor. The editor appears as a modal overlay with the step number in the title bar. If the step is a linked step (shown with an arrow like `→05`), pressing `Enter` navigates to the source step instead.
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## Writing Scripts
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Scripts are written in Forth. Type words and numbers separated by spaces. The simplest script that makes sound is:
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```forth
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;; a very simple sound
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sine sound .
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```
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Add parameters before words to modify them:
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```forth
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;; the same sound with more parameters
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c4 note 0.75 decay sine sound .
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```
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Writing long lines is not recommended because it can become quite unmanageable. Instead, break them into multiple lines for clarity:
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```forth
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;; the same sound on multiple lines
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c4 note
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0.75 decay
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sine sound
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0.4 verb
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.
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```
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## Saving
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- `Esc` — Save, compile, and close the editor.
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- `Ctrl+E` — Save and compile without closing (evaluate in place).
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When you save, the script is compiled and sent to the sequencer. If there's an error, a message flashes briefly at the bottom of the screen. `Esc` has layered behavior: if text is selected, it cancels the selection first. If completions are showing, it dismisses them. Otherwise it saves and closes.
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## Completion
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As you type, the editor suggests matching Forth words. The completion popup appears once you've typed two or more characters of a word, showing candidates that match your input along with their stack signature and description.
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- `Tab` — Accept the selected suggestion.
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- `Ctrl+N` / `Ctrl+P` — Navigate between suggestions.
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- `Esc` — Dismiss the list.
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Completion helps you discover words without memorizing them all. Type a few letters and browse what's available. For example, typing `ver` will suggest `verb` (reverb), typing `chor` will show chorus-related words.
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## Sample Finder
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Press `Ctrl+B` to open the sample finder. This provides fuzzy search over your loaded sample folders, making it easy to insert sample names without remembering their exact spelling.
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- Type to filter by name
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- `Tab` or `Enter` — Insert the selected sample name.
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- `Ctrl+N` / `Ctrl+P` — Navigate matches.
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- `Esc` — Dismiss.
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## Search
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Press `Ctrl+F` to open the search bar. Type your query, then navigate matches:
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- `Ctrl+N` — Jump to next match.
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- `Ctrl+P` — Jump to previous match.
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- `Enter` — Confirm and close search.
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- `Esc` — Cancel search.
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## Debugging
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Press `Ctrl+S` to toggle the stack display. This shows the stack state evaluated up to the cursor line, useful for understanding how values flow through your script.
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Press `Ctrl+R` to execute the script immediately as a one-shot, without waiting for the sequencer to reach the step. A green flash indicates success, red indicates an error.
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## Keybindings
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| Key | Action |
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| `Esc` | Save and close |
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| `Ctrl+E` | Evaluate (save + compile in place) |
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| `Ctrl+R` | Execute script once |
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| `Ctrl+S` | Toggle stack display |
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| `Ctrl+B` | Open sample finder |
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| `Ctrl+F` | Search |
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| `Ctrl+N` | Next match / next suggestion |
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| `Ctrl+P` | Previous match / previous suggestion |
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| `Ctrl+A` | Select all |
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| `Ctrl+C` | Copy |
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| `Ctrl+X` | Cut |
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| `Ctrl+V` | Paste |
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| `Shift+Arrows` | Extend selection |
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| `Tab` | Accept completion / sample |
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