eyes follow cursor

1 files changed, 63 insertions, 0 deletions

diff --git a/src/engine/systems/Input.ts b/src/engine/systems/Input.ts
new file mode 100644
index 0000000..9b88378
--- /dev/null
+++ b/src/engine/systems/Input.ts
@@ -0,0 +1,63 @@
+import { SystemNames, System } from ".";
+import { Game } from "..";
+import { ComponentNames } from "../components";
+import { Control } from "../components/Control";
+import { Action, KeyConstants } from "../config";
+import { Entity } from "../entities";
+import { Coord2D } from "../interfaces";
+
+export class Input extends System {
+  private keys: Set<string>;
+  private mousePosition: Coord2D;
+
+  constructor() {
+    super(SystemNames.Input);
+
+    this.keys = new Set();
+    this.mousePosition = { x: 0, y: 0 };
+  }
+
+  public clearKeys() {
+    this.keys.clear();
+  }
+
+  public keyPressed(key: string) {
+    this.keys.add(key);
+  }
+
+  public keyReleased(key: string) {
+    this.keys.delete(key);
+  }
+
+  public update(_dt: number, game: Game) {
+    game.forEachEntityWithComponent(ComponentNames.Control, (entity) =>
+      this.handleInput(entity),
+    );
+  }
+
+  public handleInput(entity: Entity) {
+    const controlComponent = entity.getComponent<Control>(
+      ComponentNames.Control,
+    );
+    if (!controlComponent.isControllable) return;
+
+    if (this.hasSomeKey(KeyConstants.ActionKeys.get(Action.INTERACT))) {
+      console.log("interact");
+    }
+  }
+
+  private hasSomeKey(keys?: string[]): boolean {
+    if (keys) {
+      return keys.some((key) => this.keys.has(key));
+    }
+    return false;
+  }
+
+  public setMousePosition(mousePosition: Coord2D) {
+    this.mousePosition = mousePosition;
+  }
+
+  public getMousePosition(): Coord2D {
+    return this.mousePosition;
+  }
+}