bandwidth reduction, filtering explosions and sending objects as [4]int

game.go

@@ -93,7 +93,7 @@ func NewGame(id string, width, height float32, obstacles, tick int) *game {
 
 func (g *game) tick(payload *Boardstate) {
 	g.players_remaining = 0
-	payload.Obstacles = g.obstacles
+	payload.Objects = MinifyObstacles(g.obstacles)
 
 	// Update Players
 	for p := range g.players {
@@ -156,24 +156,25 @@ func (g *game) sendUpdate(payload *Boardstate) {
 		// Copy the payload but only add the robots in scanner range
 		player_payload := NewBoardstate()
 		player_payload.Messages = payload.Messages
-		player_payload.Splosions = payload.Splosions
-		player_payload.Obstacles = payload.Obstacles
 		player_payload.AllBots = payload.AllBots
 		player_payload.Turn = payload.Turn
+
 		for _, r := range p.Robots {
 			player_payload.MyRobots = append(player_payload.MyRobots, *r)
-			player_payload.OtherRobots = append(
-				player_payload.OtherRobots,
-				r.GetTruncatedDetails())
+			// player_payload.OtherRobots = append(
+			//  player_payload.OtherRobots,
+			//  r.GetTruncatedDetails())
 		}
 
+		player_payload.Objects = [][4]int{}
+		player_payload.Splosions = []Splosion{}
 		player_payload.Projectiles = []Projectile{}
-		player_payload.Obstacles = []Obstacle{}
 		living_robots := 0
 
 		for _, r := range p.Robots {
 			if r.Health > 0 {
 				living_robots++
+
 				// Filter robots by scanner
 				for player := range g.players {
 					for _, scan_entry := range r.Scanners {
@@ -205,12 +206,22 @@ func (g *game) sendUpdate(payload *Boardstate) {
 					}
 				}
 
+				// Filter splosions
+				for splo := range g.splosions {
+					for _, scan_entry := range r.Scanners {
+						if splo.Id == scan_entry.Id {
+							player_payload.Splosions = append(
+								player_payload.Splosions,
+								*splo)
+						}
+					}
+				}
+
 				// Filter objects
 				for _, ob := range g.obstacles {
 					if ob.distance_from_point(r.Position) < float32(r.Stats.ScannerRadius)+r.ScanCounter {
-						player_payload.Obstacles = append(
-							player_payload.Obstacles,
-							ob)
+						player_payload.Objects = append(
+							player_payload.Objects, ob.minify())
 					}
 				}
 			}
@@ -219,7 +230,8 @@ func (g *game) sendUpdate(payload *Boardstate) {
 		if living_robots == 0 {
 			player_payload.OtherRobots = payload.OtherRobots
 			player_payload.Projectiles = payload.Projectiles
-			player_payload.Obstacles = payload.Obstacles
+			player_payload.Splosions = payload.Splosions
+			player_payload.Objects = payload.Objects
 		}
 
 		p.send <- player_payload

obstacle.go

@@ -21,6 +21,19 @@ func (o Obstacle) distance_from_point(p v.Point2d) float32 {
 	return float32(dist)
 }
 
+func (o Obstacle) minify() [4]int {
+	out := [4]int{int(o.Bounds.A.X), int(o.Bounds.A.Y), int(o.Bounds.B.X), int(o.Bounds.B.Y)}
+	return out
+}
+
+func MinifyObstacles(o []Obstacle) [][4]int {
+	out := [][4]int{}
+	for i := range o {
+		out = append(out, o[i].minify())
+	}
+	return out
+}
+
 func GenerateObstacles(count int, width, height float32) []Obstacle {
 	out := []Obstacle{}
 	for i := 0; i < count; i++ {

protocol.go

@@ -110,6 +110,7 @@ type Boardstate struct {
 	Projectiles []Projectile `json:"projectiles"`
 	Splosions   []Splosion   `json:"splosions"`
 	Obstacles   []Obstacle   `json:"obj"`
+	Objects     [][4]int     `json:"objects"`
 	Type        string       `json:"type"`
 	Turn        int          `json:"turn"`
 	AllBots     []BotHealth  `json:"all_bots"`

robot.go

@@ -181,7 +181,7 @@ func (r *Robot) checkCollisions(g *game, move_vector v.Vector2d) (bool, v.Point2
 			if bot.Id == r.Id {
 				continue
 			}
-			player_rect := v.RectFromPoint(bot.Position, 3)
+			player_rect := v.RectFromPoint(bot.Position, 5)
 			collision, _, pos := v.RectIntersection(player_rect, r.Position, move_vector)
 			if collision {
 				return collision, pos, bot
@@ -352,6 +352,17 @@ func (r *Robot) scan(g *game) {
 		}
 	}
 
+	for splo := range g.splosions {
+		dist := v.Distance(splo.Position, r.Position)
+		if dist < float32(r.Stats.ScannerRadius+int(r.ScanCounter)) {
+			s := Scanner{
+				Id:   splo.Id,
+				Type: "explosion",
+			}
+			r.Scanners = append(r.Scanners, s)
+		}
+	}
+
 }
 
 func (r *Robot) fire(projectiles map[*Projectile]bool, turn int) *Projectile {