Gather commands before UpdateState

game/ai.go

@@ -1,10 +1,10 @@
 package game
 
-func smartChooseCommand(s State, teamID int) command {
-	return smartChooseHelper(s, teamID, aiDepth)
+func ChooseCommand(s State, teamID int) Command {
+	return chooseCommandHelper(s, teamID, aiDepth)
 }
 
-func smartChooseHelper(s State, teamID int, depth int) command {
+func chooseCommandHelper(s State, teamID int, depth int) Command {
 	bestCmd, bestN := speedUp, 0
 
 	for _, cmd := range validCommands {
@@ -17,7 +17,7 @@ func smartChooseHelper(s State, teamID int, depth int) command {
 	return bestCmd
 }
 
-func score(cmd command, s State, teamID int, depth int) int {
+func score(cmd Command, s State, teamID int, depth int) int {
 	if !legalMove(s, teamID, cmd) {
 		return -1
 	}
@@ -28,11 +28,11 @@ func score(cmd command, s State, teamID int, depth int) int {
 		if b == nil {
 			return 0
 		}
-		return b.Position.Pos
+		return b.Position.Pos*100 + b.Battery.Charge
 	}
 
 	depth--
-	cmd2 := smartChooseHelper(s, teamID, depth)
+	cmd2 := chooseCommandHelper(s, teamID, depth)
 	return score(cmd2, s, teamID, depth)
 }
 

game/commands.go

@@ -1,18 +1,18 @@
 package game
 
-type command int
+type Command int
 
 const (
-	speedUp command = iota
+	speedUp Command = iota
 	slowDown
 	left
 	right
 	clearObstacle
 )
 
-var validCommands = []command{speedUp, slowDown, left, right, clearObstacle}
+var validCommands = []Command{speedUp, slowDown, left, right, clearObstacle}
 
-func doCommand(cmd command, s State, teamID int) State {
+func doCommand(cmd Command, s State, teamID int) State {
 	da := 1
 	//da += rand.Intn(3) - 1
 
@@ -53,7 +53,7 @@ func doCommand(cmd command, s State, teamID int) State {
 	return s
 }
 
-func (c command) String() string {
+func (c Command) String() string {
 	switch c {
 	case speedUp:
 		return "speed up"

game/game.go

@@ -4,14 +4,7 @@ import (
 	"log"
 )
 
-func UpdateState(s State, sOld State) State {
-	cmds := make([]command, len(s.Teams))
-	for i := range s.Teams {
-		cmd := smartChooseCommand(s, i)
-		log.Printf("team %d chose to %v", i, cmd)
-		cmds[i] = cmd
-	}
-
+func UpdateState(s State, sOld State, cmds []Command) State {
 	for i, cmd := range cmds {
 		s = doCommand(cmd, s, i)
 	}
@@ -114,7 +107,7 @@ func gameOver(s State) bool {
 	return false
 }
 
-func legalMove(s State, teamID int, cmd command) bool {
+func legalMove(s State, teamID int, cmd Command) bool {
 	r := ActiveRacer(s.Teams[teamID])
 	if r == nil {
 		return false

main.go

@@ -57,7 +57,15 @@ func run() error {
 			log.Printf("TURN %d", turn)
 			rs.Animating = true
 			rs.Frame = 0
-			s = game.UpdateState(s, sOld)
+
+			cmds := make([]game.Command, len(s.Teams))
+			for i := range s.Teams {
+				cmd := game.ChooseCommand(s, i)
+				log.Printf("team %d chose to %v", i, cmd)
+				cmds[i] = cmd
+			}
+
+			s = game.UpdateState(s, sOld, cmds)
 			turn++
 			if s.GameOver {
 				s = game.NewState()