From 867d9dd16445b53b3b1fd6db824a4a4e4d7134f2 Mon Sep 17 00:00:00 2001
From: Mark <mark@remarkablemark.org>
Date: Sun, 14 Jan 2024 23:55:28 -0500
Subject: [PATCH] feat: add cursor keys

---
 src/events/cursors.ts     | 22 ++++++++++++++++++++++
 src/events/index.ts       |  1 +
 src/gameobjects/index.ts  |  1 +
 src/gameobjects/player.ts |  5 +++++
 src/scenes/game.ts        |  5 +++--
 src/types/gameobject.ts   |  3 +++
 src/types/index.ts        |  1 +
 7 files changed, 36 insertions(+), 2 deletions(-)
 create mode 100644 src/events/cursors.ts
 create mode 100644 src/events/index.ts
 create mode 100644 src/gameobjects/index.ts
 create mode 100644 src/gameobjects/player.ts
 create mode 100644 src/types/gameobject.ts

diff --git a/src/events/cursors.ts b/src/events/cursors.ts
new file mode 100644
index 0000000..5df6674
--- /dev/null
+++ b/src/events/cursors.ts
@@ -0,0 +1,22 @@
+import type { Player } from '../types'
+
+// pixels per second
+const SPEED = 320
+
+export function addCursorKeys(player: Player) {
+  onKeyDown('left', () => {
+    player.move(-SPEED, 0)
+  })
+
+  onKeyDown('right', () => {
+    player.move(SPEED, 0)
+  })
+
+  onKeyDown('up', () => {
+    player.move(0, -SPEED)
+  })
+
+  onKeyDown('down', () => {
+    player.move(0, SPEED)
+  })
+}
diff --git a/src/events/index.ts b/src/events/index.ts
new file mode 100644
index 0000000..0d26bb1
--- /dev/null
+++ b/src/events/index.ts
@@ -0,0 +1 @@
+export * from './cursors'
diff --git a/src/gameobjects/index.ts b/src/gameobjects/index.ts
new file mode 100644
index 0000000..f7e4a87
--- /dev/null
+++ b/src/gameobjects/index.ts
@@ -0,0 +1 @@
+export * from './player'
diff --git a/src/gameobjects/player.ts b/src/gameobjects/player.ts
new file mode 100644
index 0000000..79eb721
--- /dev/null
+++ b/src/gameobjects/player.ts
@@ -0,0 +1,5 @@
+import { bean } from '../sprites'
+
+export function addPlayer() {
+  return add([pos(120, 80), bean])
+}
diff --git a/src/scenes/game.ts b/src/scenes/game.ts
index 83fe3bf..c4cf182 100644
--- a/src/scenes/game.ts
+++ b/src/scenes/game.ts
@@ -1,7 +1,8 @@
-import { bean } from '../sprites'
+import { addCursorKeys } from '../events'
+import { addPlayer } from '../gameobjects'
 
 scene('game', () => {
-  add([pos(120, 80), bean])
+  addCursorKeys(addPlayer())
 
   onClick(() => addKaboom(mousePos()))
 })
diff --git a/src/types/gameobject.ts b/src/types/gameobject.ts
new file mode 100644
index 0000000..51aad91
--- /dev/null
+++ b/src/types/gameobject.ts
@@ -0,0 +1,3 @@
+import type { GameObj, PosComp, SpriteComp } from 'kaboom'
+
+export type Player = GameObj<PosComp | SpriteComp>
diff --git a/src/types/index.ts b/src/types/index.ts
index a84a35a..87eac29 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -1,2 +1,3 @@
+export * from './gameobject'
 export * from './scene'
 export * from './sprite'