components

type Acceleration interface {
	Component
	// Rotational retrieves the rotational acceleration in radians per second.
	Rotational() mgl32.Vec3
	// Translational retrieves the translational acceleration.
	Translational() mgl32.Vec3
	// SetRotational sets the rotational acceleration.
	SetRotational(mgl32.Vec3)
	// SetTranslational sets the translational acceleration.
	SetTranslational(mgl32.Vec3)
	// Set sets the rotational and translational accerlation vectors.
	Set(rotational, translational mgl32.Vec3)
}

type Camera interface {
	// SetView sets the view matrix.
	SetView(camEye, camLookAt, camUp [3]float32)
	// SetProjection sets the projection matrix.
	SetProjection(fovY, nearPlane, farPlane float32, windowWidth, windowHeight int)
	// Projection retrieves the projection matrix.
	Projection() mgl32.Mat4
	// View retrieves the view matrix.
	View() mgl32.Mat4
	// PositionVec3 retrieves the camera position.
	PositionVec3() mgl32.Vec3
	// LookAtVec3 retrieves the point the camera is looking.
	LookAtVec3() mgl32.Vec3
	// UpVec3 retrieves the camera's up vector.
	UpVec3() mgl32.Vec3
	// FOVy retrieves the camera's FOVY.
	FOVy() float32
	// NearPlane retrieves the cameras current near plane.
	NearPlane() float32
	// FarPlane retrieves the camera's current far plane.
	FarPlane() float32
	// WindowHeight retrieves the window height used to calculate the perspective.
	WindowHeight() int
	// WindowWidth retrieves the window width used to calculate the perspective.
	WindowWidth() int
}

type Component interface {
	// Type is expected to return a string representing the type of component.
	Type() string
}

type Mesh interface {
	Component
	// Data retrieves the mesh data.
	Data() MeshData
	// Set updates the mesh data with the new data passed in as a parameter.
	Set(MeshData)
	// Load loads the mesh data from file.
	Load(string) error
}

type MeshData struct {
	Indexed        bool      `json:"indexed"`
	Verts          []float32 `json:"verts"`
	Indices        []uint32  `json:"indices"`
	VertSize       int32     `json:"vertSize"`
	TextureFile    string    `json:"textureFile"`
	FragShaderFile string    `json:"fragShaderFile"`
	VertShaderFile string    `json:"vertShaderFile"`
}

type Transform interface {
	Component
	// Set sets the transform to a specific matrix.
	Set(mgl32.Mat4)
	// Data retrieves the transforms matrix.
	Data() mgl32.Mat4
	// Rotate rotates the transform by the angles passed into the method.
	Rotate(mgl32.Vec3)
	// Translate translates the transform by the value passed into the method.
	Translate(mgl32.Vec3)
	// Update translates the transform based on the first argument then rotates it using the second argument.
	Update(mgl32.Vec3, mgl32.Vec3)
}

type Velocity interface {
	Component
	// Rotational retrieves the rotational velocity in radians per second.
	Rotational() mgl32.Vec3
	// Translational retrieves the translational velocity.
	Translational() mgl32.Vec3
	// SetRotational sets the rotational velocity.
	SetRotational(mgl32.Vec3)
	// SetTranslational sets the translational velocity.
	SetTranslational(mgl32.Vec3)
	// Set sets the rotational and translational velocities.
	Set(rotational mgl32.Vec3, translational mgl32.Vec3)
}