From 4e71a481884c0c43aea3d0ee695ae68cdec56478 Mon Sep 17 00:00:00 2001
From: BiSaXa <1669855+BiSaXa@users.noreply.github.com>
Date: Wed, 7 Sep 2022 19:40:16 +0300
Subject: first rewrite commit using bisaxa/bitreader

---
 utils/bitreader.go | 94 ------------------------------------------------------
 utils/utils.go     | 44 ++-----------------------
 2 files changed, 2 insertions(+), 136 deletions(-)
 delete mode 100644 utils/bitreader.go

(limited to 'utils')

diff --git a/utils/bitreader.go b/utils/bitreader.go
deleted file mode 100644
index ec7454e..0000000
--- a/utils/bitreader.go
+++ /dev/null
@@ -1,94 +0,0 @@
-package utils
-
-import (
-	"fmt"
-	"math"
-	"strconv"
-)
-
-func ReadButtonsDataFromInt32(input int32) []string {
-	buttonList := [32]string{
-		"Attack",
-		"Jump",
-		"Duck",
-		"Forward",
-		"Back",
-		"Use",
-		"Cancel",
-		"Left",
-		"Right",
-		"MoveLeft",
-		"MoveRight",
-		"Attack2",
-		"Run",
-		"Reload",
-		"Alt1",
-		"Alt2",
-		"Score",
-		"Speed",
-		"Walk",
-		"Zoom",
-		"Weapon1",
-		"Weapon2",
-		"BullRush",
-		"Grenade1",
-		"Grenade2",
-		"LookSpin",
-		"CurrentAbility",
-		"PreviousAbility",
-		"Ability1",
-		"Ability2",
-		"Ability3",
-		"Ability4",
-	}
-	var buttons []string
-	if input == 0 {
-		buttons = append(buttons, buttonList[0])
-		return buttons
-	}
-	for i := 1; i < 33; i++ {
-		if ReadBitState(input, i) {
-			buttons = append(buttons, buttonList[i])
-		}
-	}
-	return buttons
-}
-
-func ReadBitState(input int32, index int) bool {
-	value := input & (1 << index)
-	return value > 0
-}
-
-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 5226e80..46b707c 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -1,55 +1,15 @@
 package utils
 
-import (
-	"encoding/binary"
-	"log"
-	"math"
-	"math/bits"
-	"os"
-	"unsafe"
-)
+import "os"
 
 func CheckError(e error) {
 	if e != nil {
-		log.Panic(e)
+		panic(e)
 	}
 }
 
-func ReverseByteArrayValues(byteArr []byte, size int) []byte {
-	arr := make([]byte, size)
-	for index, byteValue := range byteArr {
-		arr[index] = bits.Reverse8(byteValue)
-	}
-	return arr
-}
-
 func ReadByteFromFile(file *os.File, size int32) []byte {
 	tmp := make([]byte, size)
 	file.Read(tmp)
 	return tmp
 }
-
-func IntFromBytes(byteArr []byte) uint32 {
-	int := binary.LittleEndian.Uint32(byteArr)
-	return int
-}
-
-func FloatFromBytes(byteArr []byte) float32 {
-	bits := binary.LittleEndian.Uint32(byteArr)
-	float := math.Float32frombits(bits)
-	return float
-}
-
-func FloatArrFromBytes(byteArr []byte) []float32 {
-	if len(byteArr) == 0 {
-		return nil
-	}
-
-	l := len(byteArr) / 4
-	ptr := unsafe.Pointer(&byteArr[0])
-	// It is important to keep in mind that the Go garbage collector
-	// will not interact with this data, and that if src if freed,
-	// the behavior of any Go code using the slice is nondeterministic.
-	// Reference: https://github.com/golang/go/wiki/cgo#turning-c-arrays-into-go-slices
-	return (*[1 << 26]float32)((*[1 << 26]float32)(ptr))[:l:l]
-}
-- 
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