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author | Matthias Schiffer <mschiffer@universe-factory.net> | 2018-11-01 00:59:13 +0100 |
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committer | Matthias Schiffer <mschiffer@universe-factory.net> | 2018-11-01 00:59:13 +0100 |
commit | 9f2e4e6996fb96d23e1ca29667130a2111a59de5 (patch) | |
tree | fa7c3c22d469f062252735269dbc09031fc47dd8 /src/view/input/inputhandler.ts | |
parent | 22b06efe2c2646a01535b5bbf5f3cc57de81ad0d (diff) | |
download | rpgedit-9f2e4e6996fb96d23e1ca29667130a2111a59de5.tar rpgedit-9f2e4e6996fb96d23e1ca29667130a2111a59de5.zip |
Do not use default exports
Diffstat (limited to 'src/view/input/inputhandler.ts')
-rw-r--r-- | src/view/input/inputhandler.ts | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/view/input/inputhandler.ts b/src/view/input/inputhandler.ts new file mode 100644 index 0000000..96f15dd --- /dev/null +++ b/src/view/input/inputhandler.ts @@ -0,0 +1,39 @@ +import { Listenable } from '../../util'; + +export class InputHandler extends Listenable<[]> { + private readonly keys: Set<number> = new Set(); + + constructor(relevantKeys: Set<number>) { + super(); + + window.addEventListener('keydown', (ev) => { + if (!relevantKeys.has(ev.keyCode)) + return; + + ev.preventDefault(); + + if (this.keys.has(ev.keyCode)) + return; + + this.keys.add(ev.keyCode); + this.runListeners(); + }); + + window.addEventListener('keyup', (ev) => { + if (!relevantKeys.has(ev.keyCode)) + return; + + ev.preventDefault(); + + if (!this.keys.has(ev.keyCode)) + return; + + this.keys.delete(ev.keyCode); + this.runListeners(); + }); + } + + public has(key: number): boolean { + return this.keys.has(key); + } +} |