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add comments to d2ds1/layer.go

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gravestench 2021-03-31 10:36:01 -07:00 committed by gucio321
parent 198a28505e
commit 87c121707d
1 changed files with 9 additions and 0 deletions
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9
d2common/d2fileformats/d2ds1/layer.go
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@ -24,10 +24,12 @@ type (
tileGrid []tileRow // index is y coordinate
)
// Layer is an abstraction of a tile grid with some helper methods
type Layer struct {
tiles tileGrid
}
// Tile returns the tile at the given x,y coordinate in the grid, or nil if empty.
func (l *Layer) Tile(x, y int) *Tile {
if l.Width() < x || l.Height() < y {
return nil
@ -36,6 +38,7 @@ func (l *Layer) Tile(x, y int) *Tile {
return &l.tiles[y][x]
}
// SetTile sets the tile at the given x,y coordinate in the tile grid
func (l *Layer) SetTile(x, y int, t *Tile) {
if l.Width() > x || l.Height() > y {
return
@ -44,6 +47,7 @@ func (l *Layer) SetTile(x, y int, t *Tile) {
l.tiles[y][x] = *t
}
// Width returns the width of the tile grid
func (l *Layer) Width() int {
if len(l.tiles[0]) < 1 {
l.SetWidth(1)
@ -52,6 +56,7 @@ func (l *Layer) Width() int {
return len(l.tiles[0])
}
// SetWidth sets the width of the tile grid, minimum of 1
func (l *Layer) SetWidth(w int) *Layer {
if w < 1 {
w = 1
@ -82,6 +87,7 @@ func (l *Layer) SetWidth(w int) *Layer {
return l
}
// Height returns the height of the tile grid
func (l *Layer) Height() int {
if len(l.tiles) < 1 {
l.SetHeight(1)
@ -90,6 +96,7 @@ func (l *Layer) Height() int {
return len(l.tiles)
}
// SetHeight sets the height of the tile grid, minimum of 1
func (l *Layer) SetHeight(h int) *Layer {
if h < 1 {
h = 1
@ -122,10 +129,12 @@ func (l *Layer) SetHeight(h int) *Layer {
return l
}
// Size returns the width and height of the tile grid
func (l *Layer) Size() (w, h int) {
return l.Width(), l.Height()
}
// SetSize sets the width and height of the tile grid
func (l *Layer) SetSize(w, h int) *Layer {
return l.SetWidth(w).SetHeight(h)
}