package main import ( v "bitbucket.org/hackerbots/vector" "math" "math/rand" ) 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 (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++ { x := rand.Float32() * (width - (width / 10)) y := rand.Float32() * (height - (height / 10)) w := rand.Float32() * (width / 10) h := rand.Float32() * (height / 10) out = append( out, Obstacle{ Bounds: v.Rect2d{ A: v.Point2d{X: x, Y: y}, B: v.Point2d{X: 20 + x + w, Y: 20 + y + h}, }, }) } return out }