3 files changed, 67 insertions, 0 deletions
diff --git a/src/state/const.ts b/src/state/const.ts
new file mode 100644
index 0000000..caac8ce
--- /dev/null
+++ b/src/state/const.ts
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+export const GAME_SIZE = {
+  rows: 20,
+  cols: 20,
+};
+
+export const INITIAL_PADDLE_POSITION = 10;
+
+export const PADDLE_WIDTH = 3;
+export const PADDLE_HEIGHT = 1;
+
+export const NUM_STARTING_BALLS = 2;
diff --git a/src/state/index.ts b/src/state/index.ts
new file mode 100644
index 0000000..03d218f
--- /dev/null
+++ b/src/state/index.ts
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+import { GAME_SIZE, NUM_STARTING_BALLS } from "./const";
+import { Ball, GameState, SessionState } from "./types";
+
+export * from "./const";
+export * from "./types";
+
+const createRandomBall = (): Ball => ({
+  position: [
+    GAME_SIZE.cols / 4 + (Math.random() * GAME_SIZE.cols) / 2,
+    GAME_SIZE.rows / 4 + (Math.random() * GAME_SIZE.rows) / 2,
+  ],
+  velocity: [-1 + Math.random() * 2, 0.5 + Math.random()],
+});
+
+const createGameState = () =>
+  ({
+    paddle: { position: [0, GAME_SIZE.rows - 1] },
+    balls: new Array(NUM_STARTING_BALLS)
+      .fill(undefined)
+      .map(() => createRandomBall()),
+    bricks: new Array(GAME_SIZE.cols * 5).fill(undefined).map((_, i) => ({
+      position: [i % GAME_SIZE.cols, Math.floor(i / GAME_SIZE.cols)],
+    })),
+  } satisfies GameState);
+
+export const createSessionState = (sessionId: string) =>
+  ({
+    sessionId,
+    localPlayerGameState: createGameState(),
+    remotePlayerGameState: createGameState(),
+  } satisfies SessionState);
diff --git a/src/state/types.ts b/src/state/types.ts
new file mode 100644
index 0000000..202e65e
--- /dev/null
+++ b/src/state/types.ts
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+export type Paddle = {
+  position: [number, number];
+};
+
+export type Ball = {
+  //float positions
+  position: [number, number];
+  velocity: [number, number];
+};
+
+export type Brick = {
+  position: [number, number];
+};
+
+export type GameState = {
+  paddle: Paddle;
+  balls: Ball[];
+  bricks: Brick[];
+};
+
+export type SessionState = {
+  sessionId: string;
+  localPlayerGameState: GameState;
+  remotePlayerGameState: GameState;
+};