way to define triangle and pyramid in go (work on pointers)

pyramid.go

package main

import "fmt"
// import "crypto/sha1"
// import "path/filepath"
// import "os"

type triangle struct {
	connect [3]*triangle
}

func (t *triangle) Connect(target *triangle) {
	if t == target {
		fmt.Println("can't add myself")
		return
	}
	
	for i := range t.connect {
		if t.connect[i] == target {
			fmt.Println("already connected")
			return
		}
		
		if t.connect[i] == nil {
			t.connect[i] = target
			target.Connect(t)
			fmt.Println(t)
			return 
		}
	}
}

func (t *triangle) Get() {
	fmt.Printf("%p :%v\n", t, *t)
}

func (t *triangle) isConnectedTo(target *triangle) bool {
	for i := range t.connect {
		if t.connect[i] == target {
			return true
		}
	}
	return false
}

type pyramid struct {
	facet [4]*triangle
}

func (p *pyramid) Facet(t *triangle) {
	for i := range p.facet {
		if p.facet[i] == nil {
			p.facet[i] = t
			return
		}
	}
}


func main() {
	
	var p pyramid
	var t1 triangle
	var t2 triangle
	var t3 triangle
	var t4 triangle

	t1.Connect(&t2)
	t1.Connect(&t3)
	t2.Connect(&t3)
	t4.Connect(&t1)
	t4.Connect(&t2)
	t4.Connect(&t3)

	t1.Get()
	t2.Get()
	t3.Get()
	t4.Get()

	p.Facet(&t1)
	p.Facet(&t2)
	p.Facet(&t3)
	p.Facet(&t4)

	fmt.Println(p)
}