filter projectiles and objects by scanners

obstacle.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	v "bitbucket.org/hackerbots/vector"
+	"math"
 	"math/rand"
 )
 
@@ -9,6 +10,17 @@ type Obstacle struct {
 	Bounds v.Rect2d `json:"bounds"`
 }
 
+func (o Obstacle) distance_from_point(p v.Point2d) float32 {
+	dist := math.MaxFloat32
+
+	dist = math.Min(dist, float64(p.Sub(o.Bounds.A).Mag()))
+	dist = math.Min(dist, float64(p.Sub(o.Bounds.B).Mag()))
+	dist = math.Min(dist, float64(p.Sub(v.Point2d{o.Bounds.A.X, o.Bounds.B.Y}).Mag()))
+	dist = math.Min(dist, float64(p.Sub(v.Point2d{o.Bounds.B.X, o.Bounds.A.Y}).Mag()))
+
+	return float32(dist)
+}
+
 func GenerateObstacles(count int, width, height float32) []Obstacle {
 	out := []Obstacle{}
 	for i := 0; i < count; i++ {