I have the following code, feel free to offer pointers if you wish:
package main
import (
"fmt"
)
type Grid struct {
rows int
cols int
tiles []Tile
}
type Tile struct {
x int
y int
contents int
}
func (g Grid) AddTile(t Tile) {
g.tiles = append(g.tiles, t)
}
func (g *Grid) Row(num int) []Tile {
numTiles := len(g.tiles)
row := []Tile{}
for i := 0; i < numTiles; i++ {
tile := g.tiles[i]
if (tile.y == num) {
row = append(row, tile)
}
}
return row
}
/*
HERE IS WHERE I NEED HELP
*/
func (g *Grid) SetRow(num, val int) {
row := g.Row(num)
rowLength := len(row)
for i := 0; i < rowLength; i++ {
tile := &row[i]
tile.contents = val
}
}
func (g Grid) Col(num int) []Tile {
numTiles := len(g.tiles)
col := []Tile{}
for i := 0; i < numTiles; i++ {
tile := g.tiles[i]
if (tile.x == num) {
col = append(col, tile)
}
}
return col
}
func MakeTile(x, y int) Tile {
tile := Tile{x: x, y: y}
return tile
}
func MakeGrid(rows, cols int) Grid {
g := Grid{ rows: rows, cols: cols}
for r := 1; r <= rows; r++ {
for c := 1; c <= cols; c++ {
g.tiles = append(g.tiles, MakeTile(r, c))
}
}
return g
}
func main() {
g := MakeGrid(256, 256)
g.SetRow(100, 5)
fmt.Println(g.Row(100))
}
I am doing this, more than anything, as a simple project to help me learn Go. The problem that is have run in to is here
/*
HERE IS WHERE I NEED HELP
*/
func (g *Grid) SetRow(num, val int) {
row := g.Row(num)
rowLength := len(row)
for i := 0; i < rowLength; i++ {
tile := &row[i]
tile.contents = val
}
}
Somewhere it seems like I need to be making a pointer to the actual Tiles that I'm trying to modify. As it is the SetRow function doesn't actually modify anything. What am I doing wrong? Keep in mind I just started learning Go 2 days ago, so this is a learning experience :)
