/
main.go
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/
main.go
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package puzzle15
import (
"log"
"math/rand"
"os"
"time"
"github.com/gotk3/gotk3/cairo"
"github.com/gotk3/gotk3/gtk"
"github.com/hultan/softteam/framework"
)
const applicationTitle = "puzzle15"
const applicationVersion = "v 0.01"
const applicationCopyRight = "©SoftTeam AB, 2020"
var numberOfRows = 3
var numberOfTiles = numberOfRows * numberOfRows
var cardinal = [][2]int{{0, 1}, {1, 0}, {0, -1}, {-1, 0}}
var menuLow, menuMedium, menuHigh *gtk.RadioMenuItem
type MainForm struct {
window *gtk.ApplicationWindow
builder *framework.GtkBuilder
aboutDialog *gtk.AboutDialog
drawingArea *gtk.DrawingArea
tiles []*cairo.Surface
scramble map[int]int
}
var tileWidth, tileHeight int
// NewMainForm : Creates a new MainForm object
func NewMainForm() *MainForm {
mainForm := new(MainForm)
return mainForm
}
// OpenMainForm : Opens the MainForm window
func (m *MainForm) OpenMainForm(app *gtk.Application) {
// Initialize gtk
gtk.Init(&os.Args)
// Create a new softBuilder
fw := framework.NewFramework()
builder, err := fw.Gtk.CreateBuilder("main.glade")
if err != nil {
panic(err)
}
m.builder = builder
// Get the main window from the glade file
m.window = m.builder.GetObject("main_window").(*gtk.ApplicationWindow)
// Set up main window
m.window.SetApplication(app)
m.window.SetTitle("Puzzle-15")
// Hook up the destroy event
m.window.Connect("destroy", m.window.Close)
// Quit button
button := m.builder.GetObject("main_window_quit_button").(*gtk.ToolButton)
button.Connect("clicked", m.window.Close)
// Status bar
statusBar := m.builder.GetObject("main_window_status_bar").(*gtk.Statusbar)
statusBar.Push(statusBar.GetContextId("gtk-startup"), "Puzzle-15 : version 0.1.0")
// Drawing area
m.drawingArea = m.builder.GetObject("drawingArea").(*gtk.DrawingArea)
m.drawingArea.Connect("draw", m.onDraw)
event := m.builder.GetObject("drawingAreaEvent").(*gtk.EventBox)
event.Connect("button-press-event", m.onClick)
// Menu
m.setupMenu(fw)
// Set random seed
rand.Seed(time.Now().UnixNano())
// Show the main window
m.window.ShowAll()
}
func (m *MainForm) setupMenu(fw *framework.Framework) {
menuNewGame := m.builder.GetObject("mnuFileNewGame").(*gtk.MenuItem)
menuNewGame.Connect("activate", m.NewGame)
menuQuit := m.builder.GetObject("mnuFileQuit").(*gtk.MenuItem)
menuQuit.Connect("activate", m.window.Close)
menuLow = m.builder.GetObject("mnuDifficultyLow").(*gtk.RadioMenuItem)
menuLow.Connect("activate", m.SetDifficultyLevel)
menuMedium = m.builder.GetObject("mnuDifficultyMedium").(*gtk.RadioMenuItem)
menuMedium.Connect("activate", m.SetDifficultyLevel)
menuHigh = m.builder.GetObject("mnuDifficultyHigh").(*gtk.RadioMenuItem)
menuHigh.Connect("activate", m.SetDifficultyLevel)
}
func (m *MainForm) NewGame() {
fileChooserDlg, err := gtk.FileChooserNativeDialogNew("Please select a puzzle image...", m.window, gtk.FILE_CHOOSER_ACTION_OPEN, "_Open", "_Cancel")
filter, err := gtk.FileFilterNew()
if err != nil {
log.Fatal(err)
}
filter.AddPattern("*.png")
fileChooserDlg.AddFilter(filter)
fileChooserDlg.SetCurrentFolder("/home/per/code/puzzle15/assets")
if err != nil {
log.Fatal("Unable to create fileChooserDlg:", err)
}
response := fileChooserDlg.NativeDialog.Run()
if gtk.ResponseType(response) == gtk.RESPONSE_ACCEPT {
fileChooser := fileChooserDlg
filename := fileChooser.GetFilename()
m.setupNewGame(filename)
}
}
func (m *MainForm) setupNewGame(filename string) {
// Load image into surface
surface, err := cairo.NewSurfaceFromPNG(filename)
if err != nil {
log.Fatal(err)
}
// Resize form to match image size
m.drawingArea.SetSizeRequest(surface.GetWidth(), surface.GetHeight())
// Calculate tile width and height
tileWidth = surface.GetWidth() / numberOfRows
tileHeight = surface.GetHeight() / numberOfRows
// Create tiles
m.tiles = nil
for i := 0; i < numberOfTiles-1; i++ {
x, y := getXYFromIndex(i)
tileSurface := surface.CreateForRectangle(
float64(x*tileWidth), float64(y*tileHeight), float64(tileWidth), float64(tileHeight))
m.tiles = append(m.tiles, tileSurface)
}
m.tiles = append(m.tiles, nil)
m.resetScramble()
m.Scramble(1000)
}
func (m *MainForm) Scramble(n int) {
var x, y int
for i := 0; i < n; i++ {
ei := m.getEmptyTileIndex()
ex, ey := getXYFromIndex(ei)
loop:
for {
r := rand.Intn(4)
c := cardinal[r]
cx, cy := c[0], c[1]
if m.isValidMove(ex+cx, ey+cy) {
x = ex + cx
y = ey + cy
break loop
}
}
i1 := getIndexFromXY(ex, ey)
i2 := getIndexFromXY(x, y)
m.scramble[i1], m.scramble[i2] = m.scramble[i2], m.scramble[i1]
}
}
func (m *MainForm) resetScramble() {
m.scramble = make(map[int]int, numberOfTiles)
for i := 0; i < numberOfTiles; i++ {
m.scramble[i] = i
}
}
func (m *MainForm) getEmptyTileIndex() int {
for i := 0; i < numberOfTiles; i++ {
if m.tiles[m.scramble[i]] == nil {
return i
}
}
panic("ERROR!")
}
func (m *MainForm) makeMove(x int, y int) {
if !m.isValidMove(x, y) {
return
}
i := getIndexFromXY(x, y)
ei := m.getEmptyTileIndex()
m.scramble[i], m.scramble[ei] = m.scramble[ei], m.scramble[i]
m.drawingArea.QueueDraw()
if m.isGameWon() {
noPatternDlg := gtk.MessageDialogNew(m.window, gtk.DIALOG_MODAL, gtk.MESSAGE_WARNING, gtk.BUTTONS_OK, "%s", "You won the game!")
noPatternDlg.Run()
noPatternDlg.Destroy()
}
}
func (m *MainForm) isValidMove(x int, y int) bool {
if x < 0 || x > numberOfRows-1 || y < 0 || y > numberOfRows-1 {
return false
}
ei := m.getEmptyTileIndex()
ex, ey := getXYFromIndex(ei)
return abs(ex-x) == 1 && abs(ey-y) == 0 || abs(ex-x) == 0 && abs(ey-y) == 1
}
func (m *MainForm) isGameWon() bool {
for i := 0; i < numberOfTiles; i++ {
if m.scramble[i] != i {
return false
}
}
return true
}
func (m *MainForm) SetDifficultyLevel() {
switch {
case menuLow.GetActive():
numberOfRows = 3
case menuMedium.GetActive():
numberOfRows = 4
case menuHigh.GetActive():
numberOfRows = 5
}
numberOfTiles = numberOfRows * numberOfRows
}