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Settings navigation, when on top to go to the bottom, and when on the bottom to go to the top (#605) 

* fix settings top and bottom

* added some comment

* TSDoc ready + less lengthy comments
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Greenlamp2 2024-05-10 15:25:41 +02:00 committed by GitHub
parent 97b50707a0
commit 6fbc0cb923
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1 changed files with 32 additions and 4 deletions
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36
src/ui/settings-ui-handler.ts
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@ -120,13 +120,25 @@ export default class SettingsUiHandler extends UiHandler {
return true;
}
/**
* Processes input from a specified button.
* This method handles navigation through a UI menu, including movement through menu items
* and handling special actions like cancellation. Each button press may adjust the cursor
* position or the menu scroll, and plays a sound effect if the action was successful.
*
* @param button - The button pressed by the user.
* @returns `true` if the action associated with the button was successfully processed, `false` otherwise.
*/
processInput(button: Button): boolean {
const ui = this.getUi();
// Defines the maximum number of rows that can be displayed on the screen.
const rowsToDisplay = 9;
let success = false;
if (button === Button.CANCEL) {
success = true;
// Reverts UI to its previous state on cancel.
this.scene.ui.revertMode();
} else {
const cursor = this.cursor + this.scrollCursor;
@ -137,27 +149,43 @@ export default class SettingsUiHandler extends UiHandler {
success = this.setCursor(this.cursor - 1);
else
success = this.setScrollCursor(this.scrollCursor - 1);
} else {
// When at the top of the menu and pressing UP, move to the bottommost item.
// First, set the cursor to the last visible element, preparing for the scroll to the end.
const successA = this.setCursor(rowsToDisplay - 1);
// Then, adjust the scroll to display the bottommost elements of the menu.
const successB = this.setScrollCursor(this.optionValueLabels.length - rowsToDisplay);
success = successA && successB; // success is just there to play the little validation sound effect
}
break;
case Button.DOWN:
if (cursor < this.optionValueLabels.length) {
if (this.cursor < 8)
if (cursor < this.optionValueLabels.length - 1) {
if (this.cursor < rowsToDisplay - 1) // if the visual cursor is in the frame of 0 to 8
success = this.setCursor(this.cursor + 1);
else if (this.scrollCursor < this.optionValueLabels.length - 9)
else if (this.scrollCursor < this.optionValueLabels.length - rowsToDisplay)
success = this.setScrollCursor(this.scrollCursor + 1);
} else {
// When at the bottom of the menu and pressing DOWN, move to the topmost item.
// First, set the cursor to the first visible element, resetting the scroll to the top.
const successA = this.setCursor(0);
// Then, reset the scroll to start from the first element of the menu.
const successB = this.setScrollCursor(0);
success = successA && successB; // Indicates a successful cursor and scroll adjustment.
}
break;
case Button.LEFT:
if (this.optionCursors[cursor])
if (this.optionCursors[cursor]) // Moves the option cursor left, if possible.
success = this.setOptionCursor(cursor, this.optionCursors[cursor] - 1, true);
break;
case Button.RIGHT:
// Moves the option cursor right, if possible.
if (this.optionCursors[cursor] < this.optionValueLabels[cursor].length - 1)
success = this.setOptionCursor(cursor, this.optionCursors[cursor] + 1, true);
break;
}
}
// Plays a select sound effect if an action was successfully processed.
if (success)
ui.playSelect();