From efaf0053506a980c959a2474abdb43ee1e7558d9 Mon Sep 17 00:00:00 2001
From: JupiterRider <60042618+JupiterRider@users.noreply.github.com>
Date: Thu, 16 Nov 2023 13:06:56 +0100
Subject: [PATCH] implement version check

---
 raylib/purego_windows.go | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/raylib/purego_windows.go b/raylib/purego_windows.go
index af4dcc7..470d16d 100644
--- a/raylib/purego_windows.go
+++ b/raylib/purego_windows.go
@@ -5,22 +5,35 @@ package rl
 
 import (
 	"fmt"
+	"unsafe"
 
 	"github.com/ebitengine/purego"
 	"golang.org/x/sys/windows"
 )
 
 const (
-	libname = "raylib.dll"
+	libname         = "raylib.dll"
+	requiredVersion = "5.0"
 )
 
 // loadLibrary loads the raylib dll and panics on error
 func loadLibrary() uintptr {
-	if handle, err := windows.LoadLibrary(libname); err != nil {
+	handle, err := windows.LoadLibrary(libname)
+	if err != nil {
 		panic(fmt.Errorf("cannot load library %s: %w", libname, err))
-	} else {
-		return uintptr(handle)
 	}
+
+	proc, err := windows.GetProcAddress(handle, "raylib_version")
+	if err != nil {
+		panic(err)
+	}
+
+	version := windows.BytePtrToString(**(***byte)(unsafe.Pointer(&proc)))
+	if version != requiredVersion {
+		panic(fmt.Errorf("version %s of %s doesn't match the required version %s", version, libname, requiredVersion))
+	}
+
+	return uintptr(handle)
 }
 
 func traceLogCallbackWrapper(fn TraceLogCallbackFun) uintptr {