115 lines
1.9 KiB
Go
115 lines
1.9 KiB
Go
package game
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import (
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"github.com/faiface/pixel/pixelgl"
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)
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type Command int
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const (
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coast Command = iota
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speedUp
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slowDown
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left
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right
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clearObstacle
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)
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var validCommands = []Command{coast, speedUp, slowDown, left, right, clearObstacle}
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func CommandLoop(w *pixelgl.Window, s State, stateCA chan<- State) {
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cmdC := make(chan []Command)
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go func() { cmdC <- pollCommands(s) }()
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stateCB := make(chan State)
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turn := 1
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sOld := s
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for !w.Closed() {
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switch {
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case w.Pressed(pixelgl.KeyQ):
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w.SetClosed(true)
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return
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case w.JustPressed(pixelgl.KeyEnter) || w.Pressed(pixelgl.KeySpace) || true:
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for i, cmd := range <-cmdC {
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s = doCommand(cmd, s, i)
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}
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s = checkWin(s, sOld)
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turn++
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if s.GameOver {
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s = NewState()
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sOld = s
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turn = 1
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}
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go func() {
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s := <-stateCB
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cmdC <- pollCommands(s)
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}()
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stateCA <- s
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stateCB <- s
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}
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w.UpdateInput()
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}
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}
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func doCommand(cmd Command, s State, teamID int) State {
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da := 1
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r := ActiveRacer(s.Teams[teamID])
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if r == nil {
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return s
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}
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r.Kinetics.A = 0
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switch cmd {
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case coast:
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case speedUp:
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r.Kinetics.A = da
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*r = accelerate(*r)
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s = updateRacer(s, *r)
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case slowDown:
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r.Kinetics.A = -da
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*r = accelerate(*r)
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s = updateRacer(s, *r)
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case left:
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r.Position.Lane++
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s = updateRacer(s, *r)
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case right:
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r.Position.Lane--
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s = updateRacer(s, *r)
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case clearObstacle:
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pos := r.Position
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pos.Pos++
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s = removeObstacle(s, pos)
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r.Kinetics.V = 0
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s = updateRacer(s, *r)
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}
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if r := ActiveRacer(s.Teams[teamID]); r != nil {
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s = moveRacer(s, *r)
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}
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s = maybePassBaton(s, teamID)
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return s
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}
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func (c Command) String() string {
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switch c {
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case coast:
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return "coast"
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case speedUp:
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return "speed up"
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case slowDown:
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return "slow down"
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case left:
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return "go left"
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case right:
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return "go right"
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case clearObstacle:
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return "clear obstacle"
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}
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return "(unknown)"
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}
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