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/* |
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* A simple but handy button press/release event handler |
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*/ |
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import { Thread } from "sphere-runtime"; |
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var events = []; |
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export class ButtonEvent extends Thread { |
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constructor(device, button, onPress, onRelease) { |
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super(); |
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this.device = device; |
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this.button = button; |
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this.onPress = onPress; |
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this.onRelease = onRelease; |
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if(this.onRelease === undefined) this.onRelease = function() {} // optional |
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var isDown = false; // private |
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this.on_update = function() { |
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if(device.isPressed(button) && !isDown) { |
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// button was up, is now pressed |
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isDown = true; |
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this.onPress(); |
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} else if(!device.isPressed(button) && isDown) { |
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// button was pressed, is now released |
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isDown = false; |
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this.onRelease(); |
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} |
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} |
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this.start(); |
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} |
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} |
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/* |
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* Example: |
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* registerEvent(Mouse.Default, MouseKey.Left, |
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* function() { |
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* // onPress |
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* const x = Mouse.Default.x; |
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* const y = Mouse.Default.y; |
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* for(button of guiButtons) { |
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* if(button.contains(x,y)) button.pushAnim(); |
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* } |
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* }, |
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* function() { |
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* // onRelease |
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* const x = Mouse.Default.x; |
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* const y = Mouse.Default.y; |
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* for(button of guiButtons) { |
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* if(button.contains(x,y)) { |
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* button.releaseAnim(); |
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* button.activate(); |
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* } |
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* } |
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* } |
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* ); |
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*/ |
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export function registerEvent(device, button, onPress, onRelease) { |
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if(getEvent(device, button) !== undefined) |
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throw Error("Event already registered, call deleteEvent first"); |
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events.push(new ButtonEvent(device, button, onPress, onRelease)); |
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} |
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/* |
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* Example: |
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* var button_event_obj = getEvent(Mouse.Default, MouseKey.Left); |
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*/ |
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export function getEvent(device, button) { |
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for(const event of events) { |
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if(event.device == device && event.button == button) return event; |
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} |
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} |
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/* |
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* Example: |
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* deleteEvent(Mouse.Default, MouseKey.Left); |
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*/ |
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export function deleteEvent(device, button) { |
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for(const e in events) { |
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if(events[e] !== undefined && events[e].device == device && events[e].button == button) { |
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events[e].stop(); |
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events.splice(e, 1); |
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} |
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} |
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} |
