Switch from Travis to a GitHub Workflow

- Upgrade from gmake to gmake2 (requires premake 5.0 alpha 12)
- Change instructions to indicate VS2019 instead of 2015
- Delete .travis.yml configuration
- Add a GitHub Workflow that checks out & runs tests
- Update README badge

ci.yml has a few improvements from the old Travis flow:
 - Targets Windows and MacOS in addition to Linux
 - Fetches libsodium from apt for faster builds
 - Runs on pull requests
 - Runs debug & release in parallel

.github/workflows/ci.yml

@@ -0,0 +1,67 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  build_and_test:
+    name: Build & test
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        configuration: [release, debug]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@master
+    - name: Setup premake
+      uses: abel0b/setup-premake@v1
+
+    ## Linux-specific build setup
+    # Install libsodium from apt
+    - name: Setup (Linux)
+      if: runner.os == 'Linux'
+      run: |
+        sudo apt-get install libsodium-dev
+
+    ## MacOS-specific build setup
+    # Install libsodium from homebrew
+    - name: Setup (MacOS)
+      if: runner.os == 'MacOS'
+      run: brew install libsodium
+
+    ## Linux & MacOS-specific build steps
+    # Build with premake + make
+    - name: Build (gmake2)
+      if: runner.os != 'Windows'
+      run: |
+        premake5 gmake2
+        make clean
+        make all config=${{ matrix.configuration }}_x64
+
+    # Run the tests with sh syntax
+    - name: Test (gmake2)
+      if: runner.os != 'Windows'
+      run: ./bin/test
+
+    ## Windows-specific build steps
+    # Set up PATH variables to point to MSBuild from at least VS 16.1 (2019)
+    - name: Setup (vs2019)
+      if: runner.os == 'Windows'
+      uses: microsoft/setup-msbuild@v1.1
+      with:
+        vs-version: '16.1.0'
+
+    # Build with premake + msbuild
+    - name: Build (vs2019)
+      if: runner.os == 'Windows'
+      run: |
+        premake5 vs2019
+        msbuild netcode.sln -nologo -m -t:Clean  -p:Configuration=${{ matrix.configuration }}
+        msbuild netcode.sln -nologo -m -p:Configuration=${{ matrix.configuration }}
+
+    # Run the tests with Powershell syntax
+    - name: Test (vs2019)
+      if: runner.os == 'Windows'
+      run: "& ./bin/x64/${{ matrix.configuration }}/test.exe"

BUILDING.md

@@ -5,7 +5,7 @@ How to build netcode.io
 
 Download [premake 5](https://premake.github.io/download.html) and copy the **premake5** executable somewhere in your path. Please make sure you have at least premake5 alpha 13.
 
-You need Visual Studio to build the source code. If you don't have Visual Studio 2015 you can [download the community edition for free](https://www.visualstudio.com/en-us/downloads/download-visual-studio-vs.aspx).
+You need Visual Studio to build the source code. If you don't have Visual Studio 2019 you can [download the community edition for free](https://visualstudio.microsoft.com/thank-you-downloading-visual-studio/?sku=Community&rel=16).
 
 Once you have Visual Studio installed, go to the command line under the netcode.io/c directory and type:
 
@@ -17,7 +17,7 @@ Now you can build the library and run individual test programs as you would for
 
 ## Building on MacOS and Linux
 
-First, download and install [premake 5](https://premake.github.io/download.html) alpha 13 or greater.
+First, download and install [premake 5](https://premake.github.io/download.html). Please make sure you have at least premake5 alpha 13.
 
 Next, install libsodium.
 
@@ -29,7 +29,7 @@ On Linux, depending on your particular distribution there may be prebuilt packag
 
 Now go to the command line under the netcode.io/c directory and enter:
 
-    premake5 gmake
+    premake5 gmake2
 
 Which creates makefiles which you can use to build the source via:
 

README.md

@@ -1,4 +1,4 @@
-[![Travis Build Status](https://travis-ci.org/networkprotocol/netcode.io.svg?branch=master)](https://travis-ci.org/networkprotocol/netcode.io)
+[![Build status](https://github.com/networkprotocol/netcode/workflows/CI/badge.svg)](https://github.com/networkprotocol/netcode/actions?query=workflow%3ACI)
 
 # netcode
 

premake5.lua

@@ -33,7 +33,7 @@ solution "netcode"
         optimize "Speed"
         defines { "NETCODE_RELEASE" }
         links { release_libs }
-    configuration { "gmake" }
+    configuration { "gmake2" }
         linkoptions { "-lm" }    
 
 project "test"
@@ -63,7 +63,7 @@ if os.ishost "windows" then
         trigger     = "solution",
         description = "Create and open the netcode.io solution",
         execute = function ()
-            os.execute "premake5 vs2015"
+            os.execute "premake5 vs2019"
             os.execute "start netcode.sln"
         end
     }
@@ -79,7 +79,7 @@ else
         trigger     = "test",
         description = "Build and run all unit tests",
         execute = function ()
-            os.execute "test ! -e Makefile && premake5 gmake"
+            os.execute "test ! -e Makefile && premake5 gmake2"
             if os.execute "make -j32 test" then
                 os.execute "./bin/test"
             end
@@ -91,7 +91,7 @@ else
         trigger     = "soak",
         description = "Build and run soak test",
         execute = function ()
-            os.execute "test ! -e Makefile && premake5 gmake"
+            os.execute "test ! -e Makefile && premake5 gmake2"
             if os.execute "make -j32 soak" then
                 os.execute "./bin/soak"
             end
@@ -103,7 +103,7 @@ else
         trigger     = "profile",
         description = "Build and run profile tet",
         execute = function ()
-            os.execute "test ! -e Makefile && premake5 gmake"
+            os.execute "test ! -e Makefile && premake5 gmake2"
             if os.execute "make -j32 profile" then
                 os.execute "./bin/profile"
             end
@@ -115,7 +115,7 @@ else
         trigger     = "client",
         description = "Build and run the client",
         execute = function ()
-            os.execute "test ! -e Makefile && premake5 gmake"
+            os.execute "test ! -e Makefile && premake5 gmake2"
             if os.execute "make -j32 client" then
                 os.execute "./bin/client"
             end
@@ -127,7 +127,7 @@ else
         trigger     = "server",
         description = "Build and run the server",
         execute = function ()
-            os.execute "test ! -e Makefile && premake5 gmake"
+            os.execute "test ! -e Makefile && premake5 gmake2"
             if os.execute "make -j32 server" then
                 os.execute "./bin/server"
             end
@@ -139,7 +139,7 @@ else
         trigger     = "client_server",
         description = "Build and run the client/server testbed",
         execute = function ()
-            os.execute "test ! -e Makefile && premake5 gmake"
+            os.execute "test ! -e Makefile && premake5 gmake2"
             if os.execute "make -j32 client_server" then
                 os.execute "./bin/client_server"
             end
@@ -170,7 +170,7 @@ else
         trigger     = "stress",
         description = "Launch 256 client instances to stress test the server",
         execute = function ()
-            os.execute "test ! -e Makefile && premake5 gmake"
+            os.execute "test ! -e Makefile && premake5 gmake2"
             if os.execute "make -j32 client" then
                 for i = 0, 255 do
                     os.execute "./bin/client &"
@@ -193,7 +193,7 @@ else
         trigger     = "scan-build",
         description = "Run clang scan-build over the project",
         execute = function ()
-            os.execute "premake5 clean && premake5 gmake && scan-build make all -j32"
+            os.execute "premake5 clean && premake5 gmake2 && scan-build make all -j32"
         end
     }