67 lines
1.2 KiB
Go
67 lines
1.2 KiB
Go
package game
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func chooseCommand(s State, teamID int) command {
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t := s.Teams[teamID]
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h := ActiveRacer(t)
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if collide(h.Position.Pos+1, h.Position.Lane, s) != nil {
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if h.Position.Lane <= t.Lane && h.Position.Lane < NumLanes-1 {
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return left
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}
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return right
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}
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var nextRacer *Racer
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for i, b := range t.Racers {
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if b.ID == h.ID+1 {
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nextRacer = &t.Racers[i]
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break
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}
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}
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if nextRacer != nil {
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if h.Position.Lane != nextRacer.Position.Lane {
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if abs(nextRacer.Position.Pos-h.Position.Pos) < h.Kinetics.V {
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return slowDown
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}
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}
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}
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return speedUp
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}
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func smartChooseCommand(s State, teamID int) command {
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return smartChooseHelper(s, teamID, 2)
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}
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func smartChooseHelper(s State, teamID int, depth int) command {
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bestCmd, bestN := speedUp, 0
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for _, cmd := range validCommands {
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n := score(cmd, s, teamID, depth)
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if n > bestN {
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bestCmd, bestN = cmd, n
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}
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}
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return bestCmd
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}
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func score(cmd command, s State, teamID int, depth int) int {
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if !legalMove(s, teamID, cmd) {
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return -1
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}
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s = doCommand(cmd, s, teamID)
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if depth == 0 {
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t := s.Teams[teamID]
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b := ActiveRacer(t)
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if b == nil {
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return 0
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}
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return b.Position.Pos
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}
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depth--
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cmd2 := smartChooseHelper(s, teamID, depth)
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return score(cmd2, s, teamID, depth)
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}
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