support underscores in function application, add sign entity

1 files changed, 49 insertions, 0 deletions

diff --git a/src/engine/entities/Sign.ts b/src/engine/entities/Sign.ts
new file mode 100644
index 0000000..a11fba6
--- /dev/null
+++ b/src/engine/entities/Sign.ts
@@ -0,0 +1,49 @@
+import { Entity, EntityNames, makeLambdaTermHighlightComponent } from ".";
+import { BoundingBox, Colliding, Grid, Sprite } from "../components";
+import { IMAGES, SPRITE_SPECS, SpriteSpec, Sprites } from "../config";
+import { Coord2D } from "../interfaces";
+
+export class Sign extends Entity {
+  private static spriteSpec: SpriteSpec = SPRITE_SPECS.get(
+    Sprites.SIGN
+  ) as SpriteSpec;
+
+  private text: string;
+
+  constructor(text: string, gridPosition: Coord2D) {
+    super(EntityNames.Sign);
+    this.text = text;
+
+    const dimension = {
+      width: Sign.spriteSpec.width,
+      height: Sign.spriteSpec.height,
+    };
+
+    this.addComponent(
+      new Sprite(
+        IMAGES.get(Sign.spriteSpec.sheet)!,
+        { x: 0, y: 0 },
+        dimension,
+        Sign.spriteSpec.msPerFrame,
+        Sign.spriteSpec.frames
+      )
+    );
+
+    this.addComponent(
+      new BoundingBox(
+        {
+          x: 0,
+          y: 0,
+        },
+        dimension,
+        0
+      )
+    );
+
+    this.addComponent(new Grid(gridPosition));
+
+    this.addComponent(new Colliding());
+
+    this.addComponent(makeLambdaTermHighlightComponent(this, this.text));
+  }
+}