143 lines
2.8 KiB
Go
143 lines
2.8 KiB
Go
package main
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import (
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"log"
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"time"
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"github.com/gdamore/tcell/v2"
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)
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const (
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Left = iota
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Right
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Up
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Down
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)
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func initilize() (tcell.Screen, tcell.Style, error) {
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style := tcell.StyleDefault.Background(tcell.ColorReset).Foreground(tcell.ColorReset)
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var err error
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screen, err := tcell.NewScreen()
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if err != nil {
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log.Println("Error creating screen: ", err)
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}
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err = screen.Init()
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if err != nil {
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log.Fatalln("Error initializing screen: ", err)
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}
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return screen, style, err
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}
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func quit(screen tcell.Screen) {
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maybePanic := recover()
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screen.Fini()
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if maybePanic != nil {
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panic(maybePanic)
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}
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}
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func gameDirector(screen tcell.Screen, style tcell.Style, keypresses chan int, gamestate chan int) {
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// Destined to die, even before I was born.
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defer quit(screen)
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//var score int = 0
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//var scoreCounter int = 1
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//var field [80][24]int
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// fill up the field:
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// 0: empty
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// 1: snake
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// 2: apple
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// 3: border
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var screenx = 80
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var screeny = 24
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var snakex int = (screenx / 2) - 1
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var snakey int = (screeny / 2) - 1
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var lastpress int = 1
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for {
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// Take input or sleep
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select {
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case press := <-keypresses:
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snakeDirection(press, &snakex, &snakey)
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lastpress = press
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case <-time.After(500 * time.Millisecond):
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snakeDirection(lastpress, &snakex, &snakey)
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}
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if snakex == 0 || snakex == screenx-1 {
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close(gamestate)
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return
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} else if snakey == 0 || snakey == screeny-1 {
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close(gamestate)
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return
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}
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// Clean the screen
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screen.Clear()
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// Draw the screen
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drawBox(screen, 0, 0, screenx-1, screeny-1, style)
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drawCoords(screen, style, &snakex, &snakey)
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drawSnake(screen, style, snakex, snakey)
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// Draw the screen
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screen.Show()
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}
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}
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func keyboardProcessor(screen tcell.Screen, keypresses chan int, gamestate chan int) {
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defer close(keypresses)
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for {
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// Poll for an event
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ev := screen.PollEvent()
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// Fetch the type, and check if any other actions are required.
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switch ev := ev.(type) {
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//case *tcell.EventResize:
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// x, y := screen.Size()
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// drawBox(screen, 0, 0, x-1, y-1, style)
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// updateScore(screen, style, snakex)
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// screen.Sync()
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case *tcell.EventKey:
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if ev.Key() == tcell.KeyEscape || ev.Key() == tcell.KeyCtrlC {
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return
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} else if ev.Rune() == 'q' || ev.Rune() == 'Q' {
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return
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} else if ev.Key() == tcell.KeyCtrlL {
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screen.Sync()
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} else if ev.Rune() == 'C' || ev.Rune() == 'c' {
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screen.Clear()
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} else if ev.Key() == tcell.KeyLeft {
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keypresses <- Left
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} else if ev.Key() == tcell.KeyRight {
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keypresses <- Right
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} else if ev.Key() == tcell.KeyDown {
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keypresses <- Down
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} else if ev.Key() == tcell.KeyUp {
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keypresses <- Up
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}
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}
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// This function needs to know if the game is over.
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select {
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case <-time.After(10 * time.Millisecond):
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case _, ok := <-gamestate:
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if !ok {
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return
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}
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}
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}
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}
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