all: drop Go 1.16 and Go 1.17 supports

Updates #2421

.github/workflows/test.yml

@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        go: ['1.16.x', '1.17.x', '1.18.x', '1.19.x']
+        go: ['1.18.x', '1.19.x']
     name: Test with Go ${{ matrix.go }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     env:
@@ -49,7 +49,6 @@ jobs:
           mv $(go env GOPATH)/bin/wasmbrowsertest${{ startsWith(matrix.os, 'windows-') && '.exe' || '' }} $(go env GOPATH)/bin/go_js_wasm_exec${{ startsWith(matrix.os, 'windows-') && '.exe' || '' }}
 
       - name: Prepare ebitenmobile test
-        if: ${{ !startsWith(matrix.go, '1.16.') }}
         run: |
           local_ebiten=$(pwd)
           cd /tmp
@@ -74,7 +73,6 @@ jobs:
           go vet -vettool=$(which vettools)${{ startsWith(matrix.os, 'windows-') && '.exe' || '' }} -tags=example -v ./...
 
       - name: govulncheck
-        if: ${{ !startsWith(matrix.go, '1.16.') && !startsWith(matrix.go, '1.17.') }}
         run: |
           go run golang.org/x/vuln/cmd/govulncheck@latest -tags=example ./...
 
@@ -91,7 +89,6 @@ jobs:
           env GOOS=windows GOARCH=arm go build -tags=example -v ./...
 
       - name: go build (Windows ARM64)
-        if: ${{ !startsWith(matrix.go, '1.16.') }}
         run: |
           env GOOS=windows GOARCH=arm64 go build -tags=example -v ./...
 
@@ -132,7 +129,7 @@ jobs:
         # TODO: Add more test environments (#1305)
         if: ${{ startsWith(matrix.os, 'ubuntu-') || startsWith(matrix.os, 'windows-') }}
         run: |
-          go test -tags=example ${{ !startsWith(matrix.go, '1.16.') && '-shuffle=on' || '' }} -v ./...
+          go test -tags=example -shuffle=on -v ./...
 
       - name: go test (Linux 386)
         if: ${{ startsWith(matrix.os, 'ubuntu-') }}
@@ -141,36 +138,35 @@ jobs:
           sudo apt-get update
           sudo apt-get install gcc-multilib
           sudo apt-get install libasound2-dev:i386 libgl1-mesa-dev:i386 libxcursor-dev:i386 libxi-dev:i386 libxinerama-dev:i386 libxrandr-dev:i386 libxxf86vm-dev:i386
-          env CGO_ENABLED=1 GOARCH=386 go test -tags=example ${{ !startsWith(matrix.go, '1.16.') && '-shuffle=on' || '' }} -v ./...
+          env CGO_ENABLED=1 GOARCH=386 go test -tags=example -shuffle=on -v ./...
 
       - name: go test (Linux OpenGL ES)
         if: ${{ startsWith(matrix.os, 'ubuntu-') }}
         run: |
           sudo apt-get install libgles2-mesa-dev
-          env EBITENGINE_GRAPHICS_LIBRARY=opengl go test -tags=example,opengles ${{ !startsWith(matrix.go, '1.16.') && '-shuffle=on' || '' }} -v ./...
+          env EBITENGINE_GRAPHICS_LIBRARY=opengl go test -tags=example,opengles -shuffle=on -v ./...
 
       - name: go test (Windows 386)
         if: ${{ startsWith(matrix.os, 'windows-') }}
         run: |
-          env GOARCH=386 go test -tags=example ${{ !startsWith(matrix.go, '1.16.') && '-shuffle=on' || '' }} -v ./...
+          env GOARCH=386 go test -tags=example -shuffle=on -v ./...
 
       - name: go test (Wasm)
         run: |
-          env GOOS=js GOARCH=wasm go test -tags=example ${{ !startsWith(matrix.go, '1.16.') && '-shuffle=on' || '' }} -v ./...
-          env GOOS=js GOARCH=wasm EBITENGINE_OPENGL=webgl1 go test -tags=example ${{ !startsWith(matrix.go, '1.16.') && '-shuffle=on' || '' }} -v ./...
+          env GOOS=js GOARCH=wasm go test -tags=example -shuffle=on -v ./...
+          env GOOS=js GOARCH=wasm EBITENGINE_OPENGL=webgl1 go test -tags=example -shuffle=on -v ./...
 
       - name: Install ebitenmobile
         run: |
           go install ./cmd/ebitenmobile
 
       - name: ebitenmobile bind (Android)
-        if: ${{ !startsWith(matrix.go, '1.16.') }}
         run: |
           cd /tmp/go-inovation
           ebitenmobile bind -target android -androidapi 19 -javapkg com.hajimehoshi.goinovation -o inovation.aar -v github.com/hajimehoshi/go-inovation/mobile
 
       - name: ebitenmobile bind (iOS)
-        if: ${{ startsWith(matrix.os, 'macos-') && !startsWith(matrix.go, '1.16.') }}
+        if: ${{ startsWith(matrix.os, 'macos-') }}
         run: |
           cd /tmp/go-inovation
           ebitenmobile bind -target ios -o Inovation.xcframework -v github.com/hajimehoshi/go-inovation/mobile

go.mod

@@ -1,6 +1,6 @@
 module github.com/hajimehoshi/ebiten/v2
 
-go 1.16
+go 1.18
 
 require (
 	github.com/ebitengine/purego v0.2.0-alpha.0.20220915044048-aa1b0f680473
@@ -16,3 +16,10 @@ require (
 	golang.org/x/sys v0.0.0-20220818161305-2296e01440c6
 	golang.org/x/tools v0.1.12
 )
+
+require (
+	github.com/jfreymuth/vorbis v1.0.2 // indirect
+	golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56 // indirect
+	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
+	golang.org/x/text v0.4.0 // indirect
+)

go.sum

@@ -8,7 +8,6 @@ github.com/hajimehoshi/bitmapfont/v2 v2.2.2 h1:4z08Fk1m3pjtlO7BdoP48u5bp/Y8xmKsh
 github.com/hajimehoshi/bitmapfont/v2 v2.2.2/go.mod h1:Ua/x9Dkz7M9CU4zr1VHWOqGwjKdXbOTRsH7lWfb1Co0=
 github.com/hajimehoshi/go-mp3 v0.3.3 h1:cWnfRdpye2m9ElSoVqneYRcpt/l3ijttgjMeQh+r+FE=
 github.com/hajimehoshi/go-mp3 v0.3.3/go.mod h1:qMJj/CSDxx6CGHiZeCgbiq2DSUkbK0UbtXShQcnfyMM=
-github.com/hajimehoshi/oto v0.6.1 h1:7cJz/zRQV4aJvMSSRqzN2TImoVVMpE0BCY4nrNJaDOM=
 github.com/hajimehoshi/oto v0.6.1/go.mod h1:0QXGEkbuJRohbJaxr7ZQSxnju7hEhseiPx2hrh6raOI=
 github.com/hajimehoshi/oto/v2 v2.4.0-alpha.4 h1:m29xzbn3Pv5MgvgjMPs7m28uhUgVt3B3AIGjQLgkqUI=
 github.com/hajimehoshi/oto/v2 v2.4.0-alpha.4/go.mod h1:OdGUICBjy7upAjvqqacbB63XIuYR3fqXZ7kYtlVYJgQ=
@@ -29,7 +28,6 @@ golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL
 golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56 h1:estk1glOnSVeJ9tdEZZc5mAMDZk5lNJNyJ6DvrBkTEU=
 golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56/go.mod h1:JhuoJpWY28nO4Vef9tZUw9qufEGTyX1+7lmHxV5q5G4=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
-golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/image v0.1.0 h1:r8Oj8ZA2Xy12/b5KZYj3tuv7NG/fBz3TwQVvpJ9l8Rk=
 golang.org/x/image v0.1.0/go.mod h1:iyPr49SD/G/TBxYVB/9RRtGUT5eNbo2u4NamWeQcD5c=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
@@ -46,7 +44,6 @@ golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220819030929-7fc1605a5dde/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=