From de673b3264c68926c693e3714c70761a3bcedf1c Mon Sep 17 00:00:00 2001
From: BiSaXa <1669855+BiSaXa@users.noreply.github.com>
Date: Mon, 29 Aug 2022 03:21:51 +0300
Subject: janky bitreader, usercmdinfo almost finished

---
 utils/bitreader.go | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 utils/bitreader.go

(limited to 'utils/bitreader.go')

diff --git a/utils/bitreader.go b/utils/bitreader.go
new file mode 100644
index 0000000..c4936fd
--- /dev/null
+++ b/utils/bitreader.go
@@ -0,0 +1,41 @@
+package utils
+
+import (
+	"fmt"
+	"math"
+	"strconv"
+)
+
+func ReadBitStateLSB(input byte, index int) (bool, error) {
+	if index < 0 && index > 7 {
+		return false, fmt.Errorf("IndexOutOfBounds for type byte")
+	}
+	value := input & (1 << index)
+	return (value > 0), nil
+}
+
+func Read32BitsAfterFirstBitInt32(input []byte, index int, step int) int32 {
+	binary := ""
+	binary += fmt.Sprintf("%08b", input[step])[8-index : 8]
+	binary += fmt.Sprintf("%08b", input[step-1])
+	binary += fmt.Sprintf("%08b", input[step-2])
+	binary += fmt.Sprintf("%08b", input[step-3])
+	binary += fmt.Sprintf("%08b", input[step-4])[:8-index]
+	output, err := strconv.ParseInt(binary, 2, 32)
+	CheckError(err)
+	return int32(output)
+
+}
+
+func Read32BitsAfterFirstBitFloat32(input []byte, index int, step int) float32 {
+	binary := ""
+	binary += fmt.Sprintf("%08b", input[step])[8-index : 8]
+	binary += fmt.Sprintf("%08b", input[step-1])
+	binary += fmt.Sprintf("%08b", input[step-2])
+	binary += fmt.Sprintf("%08b", input[step-3])
+	binary += fmt.Sprintf("%08b", input[step-4])[:8-index]
+	output, err := strconv.ParseUint(binary, 2, 32)
+	CheckError(err)
+	return math.Float32frombits(uint32(output))
+
+}
-- 
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