Add golangci-lint and fix errors found

License.md

@@ -1,6 +1,6 @@
 # BSD 2-Clause License
 
-Copyright (c) 2021, Sean Hickey (Wisellama)
+Copyright (c) 2021-2022, Sean Hickey (Wisellama)
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

Makefile

@@ -3,12 +3,15 @@ all: release
 dependencies:
 	go mod tidy
 
-build: dependencies
+build: linter dependencies
 	go build -x -v
 
-release: dependencies
+release: linter dependencies
 	go build -x -v -ldflags "-s -w"
 
+linter:
+	golangci-lint run
+
 cross_windows:
 	export CGO_ENABLED=1
 	export CC=x86_64-w64-mingw32-gcc
@@ -22,3 +25,6 @@ cross_windows_x86:
 	export GOOS=windows
 	export GOARCH=386
 	go build -x -v -ldflags "-s -w"
+
+goimports_everything:
+	find . -name "*.go" -exec goimports -w {} \;

main.go

@@ -17,7 +17,6 @@ import (
 var cpuprofile = flag.String("cpuprofile", "", "write cpu profile to file")
 
 const gameTitle = "Carpy Breakout"
-const logFile = "output.log"
 
 func main() {
 	flag.Parse()
@@ -27,7 +26,10 @@ func main() {
 		if err != nil {
 			log.Fatal(err)
 		}
-		pprof.StartCPUProfile(f)
+		err = pprof.StartCPUProfile(f)
+		if err != nil {
+			log.Fatal(err)
+		}
 		defer pprof.StopCPUProfile()
 	}
 
@@ -51,7 +53,10 @@ func runOpenGL() {
 	}
 	defer sdl.Quit()
 
-	sdlSettings()
+	err = sdlSettings()
+	if err != nil {
+		log.Fatal(err)
+	}
 
 	gameWindow, err := breakout.NewGameWindow(gameTitle)
 	if err != nil {
@@ -71,7 +76,10 @@ func runOpenGL() {
 	log.Printf("OpenGL Version: %v\n", gl.GoStr(glVersion))
 
 	// Then we can setup the OpenGL specific stuff in the game window
-	gameWindow.GLInitDefault()
+	err = gameWindow.GLInitDefault()
+	if err != nil {
+		log.Printf("error in gameWindow GLInitDefault: %v", err)
+	}
 
 	sunLight := globjects.NewPointLight(mgl32.Vec3{-10, 10, 30})
 	sunLight.GLInit(gameWindow.GLProgram)
@@ -141,6 +149,7 @@ func runOpenGL() {
 }
 
 func setupLogging() {
+	// const logFile = "output.log"
 	// file, err := os.OpenFile(logFile, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
 	// if err != nil {
 	// 	log.Fatal(err)
@@ -158,10 +167,20 @@ func glSettings() {
 	gl.LineWidth(2.0)
 }
 
-func sdlSettings() {
+func sdlSettings() error {
+	var err error
+
 	// Smooth
-	sdl.GLSetAttribute(sdl.GL_MULTISAMPLEBUFFERS, 1)
-	sdl.GLSetAttribute(sdl.GL_MULTISAMPLESAMPLES, 4)
+	err = sdl.GLSetAttribute(sdl.GL_MULTISAMPLEBUFFERS, 1)
+	if err != nil {
+		log.Printf("error setting GL_MULTISAMPLEBUFFERS: %v", err)
+		return err
+	}
+	err = sdl.GLSetAttribute(sdl.GL_MULTISAMPLESAMPLES, 4)
+	if err != nil {
+		log.Printf("error setting GL_MULTISAMPLESAMPLES: %v", err)
+		return err
+	}
 
 	// Disable the Linux compositor flicker.
 	// https://github.com/mosra/magnum/issues/184#issuecomment-425952900
@@ -171,4 +190,6 @@ func sdlSettings() {
 
 	// Capture the mouse for movement
 	sdl.SetRelativeMouseMode(true)
+
+	return nil
 }

pkg/breakout/gamewindow.go

@@ -90,16 +90,28 @@ func (w *GameWindow) AddObject(object globjects.GLObject) {
 }
 
 func (w *GameWindow) Destroy() {
-	w.SDLWindow.Destroy()
+	err := w.SDLWindow.Destroy()
+	if err != nil {
+		log.Println(err)
+	}
+
 	sdl.GLDeleteContext(*w.GLContext)
 }
 
 func (w *GameWindow) ToggleFullscreen() {
+	var err error
 	if w.fullscreen {
-		w.SDLWindow.SetFullscreen(defaultWindowFlags)
+		err = w.SDLWindow.SetFullscreen(defaultWindowFlags)
+		if err != nil {
+			log.Printf("error setting defaultWindowFlags: %v", err)
+		}
 	} else {
-		w.SDLWindow.SetFullscreen(fullscreenWindowFlags)
+		err = w.SDLWindow.SetFullscreen(fullscreenWindowFlags)
+		if err != nil {
+			log.Printf("error setting fullscreenWindowFlags: %v", err)
+		}
 	}
+
 	w.fullscreen = !w.fullscreen
 }
 

pkg/globjects/camera.go

@@ -52,7 +52,6 @@ func (c *Camera) GLDraw() {
 }
 
 func (c *Camera) GLInit(glProgram uint32) {
-	return
 }
 
 func (c *Camera) Update() {
@@ -61,7 +60,6 @@ func (c *Camera) Update() {
 }
 
 func (c *Camera) ToggleWireframe() {
-	return
 }
 
 func (c *Camera) GetAABB() *AABB {