ballistic

type Bullet struct {
	Caliber float64 // Diameter of bullet in inches
	Weight  float64 // Weight of bullet in grains
	BC      *Coefficient
	Length  float64 // bullet length in inches
}

type Coefficient struct {
	Value      float64 // BC value
	FormFactor string  // FormFactor "G1" or "G7"
}

type Environment struct {
	Temperature      float64 // In Fahrenheit
	Altitude         int     // in ft
	Pressure         float64 // in Hg
	Humidity         float64 // Himidity percentage
	WindAngle        float64 // Wind direction in degrees (0 to 360)
	WindSpeed        float64 // Wind speed in mph
	PressureAbsolute bool    // If true, only Pressure will be used
}

type Load struct {
	Bullet         *Bullet
	MuzzleVelocity *float64 // in ft/s (default 3000)
	ChronoDistance *float64 // Distanct to chonograph in ft (default 10 ft)
}

type Rifle struct {
	Name           string
	Load           *Load
	SightHeight    *float64 // Sight height in inches (default 1.5)
	BarrelTwist    *float64 // Barrel twist rate (default 7)
	TwistDirection string   // Twist direction "left" or "right" (default "right")
	ZeroRange      *float64 // Zero range of rifle in yrds (default 100)
}

type Scenario struct {
	Rifle            *Rifle
	Environment      *Environment
	Target           *Target
	IncludeSpinDrift bool
}

type Target struct {
	Speed  float64 // Target speed in mph
	Angle  float64 // Target direction in degrees
	Height float64 // Target size/height in inches
}