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 +++++++++++++++++++++++++++++++++++++++++
 utils/utils.go     | 31 -------------------------------
 2 files changed, 41 insertions(+), 31 deletions(-)
 create mode 100644 utils/bitreader.go

(limited to 'utils')

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))
+
+}
diff --git a/utils/utils.go b/utils/utils.go
index 6874e6b..5226e80 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -1,15 +1,12 @@
 package utils
 
 import (
-	"bytes"
 	"encoding/binary"
 	"log"
 	"math"
 	"math/bits"
 	"os"
 	"unsafe"
-
-	"github.com/32bitkid/bitreader"
 )
 
 func CheckError(e error) {
@@ -18,34 +15,6 @@ func CheckError(e error) {
 	}
 }
 
-func ReadBitsFromReversedByteArray1(byteArr []byte) bool {
-	r := bitreader.NewReader(bytes.NewBuffer(ReverseByteArrayValues(byteArr, len(byteArr))))
-	value, err := r.Read1()
-	CheckError(err)
-	return value
-}
-
-func ReadBitsFromReversedByteArray8(byteArr []byte, bitLength uint) uint8 {
-	r := bitreader.NewReader(bytes.NewBuffer(ReverseByteArrayValues(byteArr, len(byteArr))))
-	value, err := r.Read8(bitLength)
-	CheckError(err)
-	return value
-}
-
-func ReadBitsFromReversedByteArray16(byteArr []byte, bitLength uint) uint16 {
-	r := bitreader.NewReader(bytes.NewBuffer(ReverseByteArrayValues(byteArr, len(byteArr))))
-	value, err := r.Read16(bitLength)
-	CheckError(err)
-	return value
-}
-
-func ReadBitsFromReversedByteArray32(byteArr []byte, bitLength uint) uint32 {
-	r := bitreader.NewReader(bytes.NewBuffer(ReverseByteArrayValues(byteArr, len(byteArr))))
-	value, err := r.Read32(bitLength)
-	CheckError(err)
-	return value
-}
-
 func ReverseByteArrayValues(byteArr []byte, size int) []byte {
 	arr := make([]byte, size)
 	for index, byteValue := range byteArr {
-- 
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