5 files changed, 26 insertions, 2 deletions
diff --git a/src/engine/components/Colliding.ts b/src/engine/components/Colliding.ts
index 4027c3d..fe782df 100644
--- a/src/engine/components/Colliding.ts
+++ b/src/engine/components/Colliding.ts
@@ -1,7 +1,13 @@
 import { Component, ComponentNames } from ".";
+import { Game } from "..";
+import { Entity } from "../entities";
 
 export class Colliding extends Component {
-  constructor() {
+  public onCollision?: (game: Game, entity: Entity) => void;
+
+  constructor(onCollision?: (game: Game, entity: Entity) => void) {
     super(ComponentNames.Colliding);
+
+    this.onCollision = onCollision;
   }
 }
diff --git a/src/engine/components/ComponentNames.ts b/src/engine/components/ComponentNames.ts
index a9f0c15..dd50fb3 100644
--- a/src/engine/components/ComponentNames.ts
+++ b/src/engine/components/ComponentNames.ts
@@ -11,4 +11,5 @@ export namespace ComponentNames {
   export const GridSpawn = "GridSpawn";
   export const Text = "Text";
   export const LambdaTerm = "LambdaTerm";
+  export const Life = "Life";
 }
diff --git a/src/engine/components/Life.ts b/src/engine/components/Life.ts
new file mode 100644
index 0000000..6e6d278
--- /dev/null
+++ b/src/engine/components/Life.ts
@@ -0,0 +1,11 @@
+import { Component, ComponentNames } from ".";
+
+export class Life extends Component {
+  public alive: boolean = true;
+
+  constructor(alive: boolean) {
+    super(ComponentNames.Life);
+
+    this.alive = alive;
+  }
+}
diff --git a/src/engine/components/Sprite.ts b/src/engine/components/Sprite.ts
index c623bac..fdf9675 100644
--- a/src/engine/components/Sprite.ts
+++ b/src/engine/components/Sprite.ts
@@ -2,7 +2,12 @@ import { Component, ComponentNames } from ".";
 import type { Dimension2D, DrawArgs, Coord2D } from "../interfaces";
 import { clamp } from "../utils";
 
-export class Sprite extends Component {
+export interface Renderable {
+  update(dt: number): void;
+  draw(ctx: CanvasRenderingContext2D, drawArgs: DrawArgs): void;
+}
+
+export class Sprite extends Component implements Renderable {
   private sheet: HTMLImageElement;
 
   private spriteImgPos: Coord2D;
diff --git a/src/engine/components/index.ts b/src/engine/components/index.ts
index a7a3cf1..023e73d 100644
--- a/src/engine/components/index.ts
+++ b/src/engine/components/index.ts
@@ -12,3 +12,4 @@ export * from "./Colliding";
 export * from "./GridSpawn";
 export * from "./Text";
 export * from "./LambdaTerm";
+export * from "./Life";