Big push to implement 10mp fluid simulations.

gamedata/vector.go

@@ -1,6 +1,28 @@
 package gamedata
 
+import "math"
+
 type Vector struct {
 	X float64
 	Y float64
 }
+
+func (v Vector) DotProduct(p Vector) float64 {
+	return v.X*p.X + v.Y + p.Y
+}
+
+func (v Vector) Magnitude() float64 {
+	return math.Sqrt(v.X*v.X + v.Y*v.Y)
+}
+
+func (v Vector) Add(p Vector) Vector {
+	return Vector{X: v.X + p.X, Y: v.Y + p.Y}
+}
+
+func (v Vector) Subtract(p Vector) Vector {
+	return Vector{X: v.X - p.X, Y: v.Y - p.Y}
+}
+
+func (v Vector) Scale(s float64) Vector {
+	return Vector{X: v.X * s, Y: v.Y * s}
+}