88 lines
1.4 KiB
Go
88 lines
1.4 KiB
Go
package game
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import (
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"log"
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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 PollCommands(s State) []Command {
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cmds := make([]Command, len(s.Teams))
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for i := range s.Teams {
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cmd := chooseCommand(s, i)
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log.Printf("team %d chose to %v", i, cmd)
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cmds[i] = cmd
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}
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return cmds
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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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