add a spritesheet component

3 files changed, 23 insertions, 7 deletions

diff --git a/static/src/engine/component.ts b/static/src/engine/component.ts
index 9607fec..a16215b 100644
--- a/static/src/engine/component.ts
+++ b/static/src/engine/component.ts
@@ -2,6 +2,7 @@ export enum ComponentType {
   POSITION = "POSITION",
   RENDERABLE = "RENDERABLE",
   TRAILING_POSITION = "TRAILING_POSITION",
+  SPRITESHEET = "SPRITESHEET",
 }
 
 export interface Component {
@@ -22,3 +23,24 @@ export interface TrailingPositionComponent extends Component {
 export interface RenderableComponent extends Component {
   name: ComponentType.RENDERABLE;
 }
+
+export interface SpriteSpec {
+  ms_per_frame: number;
+  frames: number;
+  top_x: number;
+  top_y: number;
+  end_x: number;
+  end_y: number;
+}
+
+export interface SpriteSheetComponent extends Component {
+  name: ComponentType.SPRITESHEET;
+  source: string;
+  sheet: HTMLImageElement;
+
+  current_frame: number;
+  last_update: number;
+  current_state: string;
+
+  state_to_spritespec: Record<string, SpriteSpec>;
+}
diff --git a/static/src/engine/debounce_publisher.ts b/static/src/engine/debounce_publisher.ts
index 8ee4bb0..bc5e95f 100644
--- a/static/src/engine/debounce_publisher.ts
+++ b/static/src/engine/debounce_publisher.ts
@@ -5,7 +5,7 @@ export class DebouncePublisher<T> {
 
   constructor(
     private readonly publisher: (data: T) => void | Promise<void>,
-    private readonly debounce_ms = 100,
+    private readonly debounce_ms = 150,
   ) {}
 
   public start() {
diff --git a/static/src/engine/entity.ts b/static/src/engine/entity.ts
index 2c8d38e..87c9a67 100644
--- a/static/src/engine/entity.ts
+++ b/static/src/engine/entity.ts
@@ -1,7 +1,6 @@
 import {
   Component,
   ComponentType,
-  PositionComponent,
   RenderableComponent,
   TrailingPositionComponent,
 } from "./component";
@@ -36,10 +35,5 @@ export const create_cat = (base: Entity) => {
     name: ComponentType.RENDERABLE,
   };
   base.components[ComponentType.RENDERABLE] = renderable;
-  base.components[ComponentType.POSITION] = {
-    component: ComponentType.POSITION,
-    x: Math.random() * 1_000,
-    y: Math.random() * 1_000,
-  } as unknown as PositionComponent; // TODO: hack
   return base;
 };