All sorts of fun stuff...

- stats are now based on a 1-100 ranged and mapped to sensibles
- turnspeed and fire rate are available stats
- bugs in movement are squished

game.go

@@ -154,7 +154,7 @@ func (g *game) run() {
 					p.scan(g.players)
 					p.nudge(g)
 					if p.Robot.FireAt != nil {
-						proj := p.fire(g.projectiles)
+						proj := p.fire(g.projectiles, g.turn)
 						if proj != nil {
 							g.projectiles[proj] = true
 						}

main.go

@@ -12,7 +12,7 @@ import (
 )
 
 var addr = flag.String("addr", ":8666", "http service address")
-var tick = flag.Int("tick", 33, "")
+var tick = flag.Int("tick", 60, "")
 var verbose = flag.Bool("verbose", false, "")
 var width = flag.Float64("width", 800, "width of field")
 var height = flag.Float64("height", 550, "height of field")

player.go

@@ -94,43 +94,49 @@ func (p *player) nudge(g *game) {
 	if current_heading.Mag() == 0 {
 		// We may have been stopped before this and had no heading
 		current_heading = p.Robot.MoveTo.Sub(p.Robot.Position).Normalize()
+		log.Printf("Heading WAS zero, is now %v", current_heading)
 	}
 
 	// Where do we WANT to be heading?
 	new_heading := p.Robot.MoveTo.Sub(p.Robot.Position).Normalize()
 
-	// Is our direction change too much? Hard coding to 5 degrees/s for now
-	angle := v.Angle(current_heading, new_heading) * v.Rad2deg
-	dir := 1.0
-	if angle < 0 {
-		dir = -1.0
-	}
+	if new_heading.Mag() > 0 {
+		// Is our direction change too much? Hard coding to 5 degrees/s for now
+		angle := v.Angle(current_heading, new_heading) * v.Rad2deg
 
-	// Max turn radius in this case is 100 degrees per second
-	if math.Abs(angle) > (100 * delta) {
-		// New heading should be a little less, take current heading and
-		// rotate by the max turn radius per frame.
-		rot := (100 * delta) * v.Deg2rad
+		dir := 1.0
+		if angle < 0 {
+			dir = -1.0
+		}
 
-		new_heading = current_heading.Rotate(rot * dir)
-	}
+		// Max turn radius in this case is in degrees per second
+		if math.Abs(angle) > (float64(p.Robot.Stats.TurnSpeed) * delta) {
+			// New heading should be a little less, take current heading and
+			// rotate by the max turn radius per frame.
+			rot := (float64(p.Robot.Stats.TurnSpeed) * delta) * v.Deg2rad
 
-	move_vector := new_heading.Scale(p.Robot.Speed * delta)
-	collision, _ := p.checkCollisions(g, move_vector)
-	if collision {
-		// p.Robot.Position = intersection_point
-		p.Robot.Speed = 0
-		p.Robot.MoveTo = &p.Robot.Position
-		p.Robot.Health -= 5
-		p.Robot.Heading = v.Vector2d{X: 0, Y: 0}
-	} else {
-		p.Robot.Position = p.Robot.Position.Add(move_vector)
-		if new_heading.Mag() > 0 {
-			p.Robot.Heading = new_heading
+			new_heading = current_heading.Rotate(rot * dir)
+		}
+
+		move_vector := new_heading.Scale(p.Robot.Speed * delta)
+		collision, _ := p.checkCollisions(g, move_vector)
+		if collision {
+			// p.Robot.Position = intersection_point
+			p.Robot.Health -= int(p.Robot.Speed / 10.0)
+			p.Robot.MoveTo = &p.Robot.Position
+			p.Robot.Speed = 0
+			p.Robot.Heading = v.Vector2d{X: 0, Y: 0}
 		} else {
-			log.Printf("Zero Heading %v", new_heading)
+			p.Robot.Position = p.Robot.Position.Add(move_vector)
+			if new_heading.Mag() > 0 {
+				p.Robot.Heading = new_heading
+				// log.Printf("%v %v %v", new_heading, current_heading, angle)
+			} else {
+				log.Printf("Zero Heading %v", new_heading)
+			}
 		}
 	}
+
 }
 
 func (p *player) scan(players map[*player]bool) {
@@ -152,22 +158,22 @@ func (p *player) scan(players map[*player]bool) {
 	}
 }
 
-func (p *player) fire(projectiles map[*Projectile]bool) *Projectile {
-	// XXX: is this to prevent us from having multiple projectiles from the
-	// same bot?
-	for proj := range projectiles {
-		if proj.Id == p.Robot.Id {
-			return nil
-		}
+func (p *player) fire(projectiles map[*Projectile]bool, turn int) *Projectile {
+	// Throttle the fire rate
+	time_since_fired := (float64(turn) * (delta * 1000)) - (float64(p.Robot.LastFired) * (delta * 1000))
+	if time_since_fired < float64(p.Robot.Stats.FireRate) {
+		return nil
 	}
 
+	p.Robot.LastFired = turn
+
 	return &Projectile{
 		Id:       p.Robot.Id,
 		Position: p.Robot.Position,
 		MoveTo:   *p.Robot.FireAt,
 		Damage:   10,
 		Radius:   p.Robot.Stats.WeaponRadius,
-		Speed:    float64(p.Robot.Stats.Speed * 2),
+		Speed:    float64(p.Robot.Stats.Speed * 3),
 	}
 }
 

protocol.go

@@ -40,8 +40,8 @@ func (c *ClientID) Valid() (bool, string) {
 }
 
 type ClientConfig struct {
-	ID    string `json:"id"`
-	Stats Stats  `json:"stats"`
+	ID    string       `json:"id"`
+	Stats StatsRequest `json:"stats"`
 }
 
 type BoardSize struct {
@@ -164,7 +164,7 @@ func addPlayer(ws *websocket.Conn) {
 
 		p := &player{
 			Robot: Robot{
-				Stats:    conf.Stats,
+				Stats:    DeriveStats(conf.Stats),
 				Id:       player_id,
 				Name:     clientid.Name,
 				Health:   conf.Stats.Hp,

robot.go

@@ -16,6 +16,7 @@ type Robot struct {
 	MoveTo      *v.Point2d `json:"move_to,omitempty"`
 	FireAt      *v.Point2d `json:"fire_at,omitempty"`
 	Scanners    []Scanner  `json:"scanners"`
+	LastFired   int        `json:"last_fired"`
 }
 
 type RobotSorter struct {
@@ -40,11 +41,62 @@ type Stats struct {
 	Acceleration  float64 `json:"acceleration"`
 	WeaponRadius  int     `json:"weapon_radius"`
 	ScannerRadius int     `json:"scanner_radius"`
+	TurnSpeed     int     `json:"turn_speed"`
+	FireRate      int     `json:"fire_rate"`
 }
 
-func (s Stats) Valid() bool {
-	total := int(s.Speed) + s.Hp + s.WeaponRadius + s.ScannerRadius
-	if total > 500 {
+// We request stats using an integer between 1 and 100, the
+// integer values map to sensible min-max ranges
+type StatsRequest struct {
+	Hp            int `json:"hp"`
+	Speed         int `json:"speed"`
+	Acceleration  int `json:"acceleration"`
+	WeaponRadius  int `json:"weapon_radius"`
+	ScannerRadius int `json:"scanner_radius"`
+	TurnSpeed     int `json:"turn_speed"`
+	FireRate      int `json:"fire_rate"`
+}
+
+func DeriveStats(request StatsRequest) Stats {
+	s := Stats{}
+
+	// Conversion Tables
+	hp_min := 20.0
+	hp_max := 200.0
+	s.Hp = int(((float64(request.Hp) / 100.0) * (hp_max - hp_min)) + hp_min)
+
+	speed_min := 40.0
+	speed_max := 200.0
+	s.Speed = ((float64(request.Speed) / 100.0) * (speed_max - speed_min)) + speed_min
+
+	accel_min := 20.0
+	accel_max := 200.0
+	s.Acceleration = ((float64(request.Acceleration) / 100.0) * (accel_max - accel_min)) + accel_min
+
+	wep_rad_min := 5.0
+	wep_rad_max := 60.0
+	s.WeaponRadius = int(((float64(request.WeaponRadius) / 100.0) * (wep_rad_max - wep_rad_min)) + wep_rad_min)
+
+	scan_rad_min := 100.0
+	scan_rad_max := 400.0
+	s.ScannerRadius = int(((float64(request.ScannerRadius) / 100.0) * (scan_rad_max - scan_rad_min)) + scan_rad_min)
+
+	turn_spd_min := 30.0
+	turn_spd_max := 300.0
+	s.TurnSpeed = int(((float64(request.TurnSpeed) / 100.0) * (turn_spd_max - turn_spd_min)) + turn_spd_min)
+
+	fire_rate_min := 10.0
+	fire_rate_max := 2000.0
+	s.FireRate = int(fire_rate_max+300.0) - int(((float64(request.FireRate)/100.0)*(fire_rate_max-fire_rate_min))+fire_rate_min)
+
+	return s
+}
+
+func (s StatsRequest) Valid() bool {
+	total := (s.Speed + s.Hp + s.WeaponRadius +
+		s.ScannerRadius + s.Acceleration + s.TurnSpeed + s.FireRate)
+
+	if total > 350 {
 		return false
 	}
 	return true