reorganized source, added test cases for tuning

main.go

@@ -1,55 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"os"
-	"runtime/pprof"
-
-	_ "net/http/pprof"
-
-	"github.com/hajimehoshi/ebiten/v2"
-)
-
-func main() {
-	var directstart bool
-
-	if len(os.Args) > 1 {
-		directstart = true
-	}
-
-	config, err := ParseCommandline()
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	if config.ShowVersion {
-		fmt.Printf("This is golsky version %s\n", VERSION)
-		os.Exit(0)
-	}
-
-	start := Play
-	if !directstart {
-		start = Menu
-		config.DelayedStart = true
-	}
-	game := NewGame(config, SceneName(start))
-
-	if config.ProfileFile != "" {
-		// enable  cpu profiling. Do  NOT use q  to stop the  game but
-		// close the window to get a profile
-		fd, err := os.Create(config.ProfileFile)
-		if err != nil {
-			log.Fatal(err)
-		}
-		defer fd.Close()
-
-		pprof.StartCPUProfile(fd)
-		defer pprof.StopCPUProfile()
-	}
-
-	// main loop
-	if err := ebiten.RunGame(game); err != nil {
-		log.Fatal(err)
-	}
-}