From b2bea80c4cbdcc71919c5da3e57b8e5a429c1a60 Mon Sep 17 00:00:00 2001
From: bel <bel@bel.bel>
Date: Wed, 1 Mar 2023 22:03:44 -0700
Subject: [PATCH] input.Random.Read yields input.Button

---
 src/device/input/input.go       |  5 +++++
 src/device/input/random.go      | 37 +++++++++++++++++++++++++++++++++
 src/device/input/random_test.go | 16 ++++++++++++++
 3 files changed, 58 insertions(+)
 create mode 100644 src/device/input/input.go
 create mode 100644 src/device/input/random.go
 create mode 100644 src/device/input/random_test.go

diff --git a/src/device/input/input.go b/src/device/input/input.go
new file mode 100644
index 0000000..e2c35d8
--- /dev/null
+++ b/src/device/input/input.go
@@ -0,0 +1,5 @@
+package input
+
+type Input interface {
+	Read() []byte
+}
diff --git a/src/device/input/random.go b/src/device/input/random.go
new file mode 100644
index 0000000..9fd6d00
--- /dev/null
+++ b/src/device/input/random.go
@@ -0,0 +1,37 @@
+package input
+
+import (
+	"math/rand"
+	"time"
+)
+
+type Button struct {
+	Char byte
+	Down bool
+}
+
+type Random struct {
+	start byte
+	stop  byte
+	down  []Button
+}
+
+func NewRandom(start, stop byte) *Random {
+	rand.Seed(time.Now().UnixNano())
+	return &Random{start: start, stop: stop + 1}
+}
+
+func (r *Random) Read() []Button {
+	if rand.Int()%2 == 0 {
+		was := r.down
+		for i := range was {
+			was[i].Down = false
+		}
+		r.down = r.down[:0]
+		return was
+	} else {
+		c := Button{Char: r.start + byte(rand.Int()%int(r.stop-r.start)), Down: true}
+		r.down = append(r.down, c)
+		return []Button{c}
+	}
+}
diff --git a/src/device/input/random_test.go b/src/device/input/random_test.go
new file mode 100644
index 0000000..6850e0a
--- /dev/null
+++ b/src/device/input/random_test.go
@@ -0,0 +1,16 @@
+package input_test
+
+import (
+	"mayhem-party/src/device/input"
+	"testing"
+)
+
+func TestRandom(t *testing.T) {
+	r := input.NewRandom('a', 'g')
+	for i := 0; i < 100; i++ {
+		batch := r.Read()
+		for _, got := range batch {
+			t.Logf("[%d] %c:%v", i, got.Char, got.Down)
+		}
+	}
+}