fix: [#2762] wasPressed in input mapper (#2766)

Closes #2762

## Changes:

- Changes the input mapper execution order to run input mapping before clearing keyboard events per frame

CHANGELOG.md

@@ -3,11 +3,40 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-
 ## [Unreleased]
 
 ### Breaking Changes
 
+-
+
+### Deprecated
+
+-
+
+### Added
+
+-
+
+### Fixed
+
+- Fixed issue with input mapper where `keyboard.wasPressed(...)` did not fire
+
+### Updates
+
+-
+
+### Changed
+
+-
+
+<!--------------------------------- DO NOT EDIT BELOW THIS LINE --------------------------------->
+<!--------------------------------- DO NOT EDIT BELOW THIS LINE --------------------------------->
+<!--------------------------------- DO NOT EDIT BELOW THIS LINE --------------------------------->
+
+## [v0.28.0]
+
+### Breaking Changes
+
 - Removed `ex.Class` base class type, this was a common base class for many excalibur types that provided old on/off event functionality. This functionality has been preserved on the types that had it before using `ex.EventEmitter`
 
 ### Deprecated
@@ -193,11 +222,6 @@ stored `ex.Graphics` causing them to be shared across clones.
 - Excalibur resources by default no longer add cache busting query string to resources. All built in resources now expose a `bustCache` property to allow setting this before loading, for example `ex.Sound.bustCache`.
 
 
-
-<!--------------------------------- DO NOT EDIT BELOW THIS LINE --------------------------------->
-<!--------------------------------- DO NOT EDIT BELOW THIS LINE --------------------------------->
-<!--------------------------------- DO NOT EDIT BELOW THIS LINE --------------------------------->
-
 ## [0.27.0] - 2022-07-08
 
 ### Breaking Changes

src/engine/Engine.ts

@@ -1205,9 +1205,9 @@ O|===|* >________________>\n\
       // suspend updates until loading is finished
       this._loader.update(this, delta);
       // Update input listeners
+      this.inputMapper.execute();
       this.input.keyboard.update();
       this.input.gamepads.update();
-      this.inputMapper.execute();
       return;
     }
 
@@ -1225,9 +1225,9 @@ O|===|* >________________>\n\
     this._postupdate(delta);
 
     // Update input listeners
+    this.inputMapper.execute();
     this.input.keyboard.update();
     this.input.gamepads.update();
-    this.inputMapper.execute();
   }
 
   /**

src/spec/InputMapperSpec.ts

@@ -1,4 +1,5 @@
 import * as ex from '@excalibur';
+import { TestUtils } from './util/TestUtils';
 
 describe('An InputMapper', () => {
   it('exists', () => {
@@ -49,4 +50,25 @@ describe('An InputMapper', () => {
     expect(command).toHaveBeenCalledTimes(0);
   });
 
+  it('can fire wasPressed events when used in a engine', () => {
+
+    const engine = TestUtils.engine({ width: 100, height: 100 });
+
+    const clock = engine.clock as ex.TestClock;
+    clock.start();
+    engine.input.keyboard.triggerEvent('down', ex.Keys.Space);
+
+    const sut = engine.inputMapper;
+    const keyPressedSpy = jasmine.createSpy('keyPressed');
+    const keyReleasedSpy = jasmine.createSpy('keyReleased');
+    sut.on(({keyboard}) => keyboard.wasPressed(ex.Keys.Space), keyPressedSpy);
+    sut.on(({keyboard}) => keyboard.wasReleased(ex.Keys.Space), keyReleasedSpy);
+
+    clock.step();
+    expect(keyPressedSpy).toHaveBeenCalled();
+
+    engine.input.keyboard.triggerEvent('up', ex.Keys.Space);
+    clock.step();
+    expect(keyReleasedSpy).toHaveBeenCalled();
+  });
 });