blob: e41fce3aa01f33d36eddd0c91fa783f9956b4b83 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
package main
import (
"github.com/hajimehoshi/ebiten/v2"
"golang.org/x/exp/slog"
)
const SELECTION_HALO_WIDTH = 10
type Selection struct {
IsSelected bool
Halo *ebiten.Image
}
func (e *Entity) SelectMultiple(cursor Point, selection GlobalSelection) {
if e.Selection.IsEnabled {
e.Selection.Value.IsSelected = false
selectionBounds := Rectangle{selection.Start, cursor}.Canon()
if selectionBounds.Overlaps(e.Bounds()) {
e.Selection.Value.IsSelected = true
slog.Info("entity selected", slog.String("position", e.Position.Value.String()))
}
}
}
func (e *Entity) SelectSingle(cursor Point, canBeSelected bool) bool {
if e.Selection.IsEnabled {
e.Selection.Value.IsSelected = false
if canBeSelected && cursor.In(e.Bounds()) {
e.Selection.Value.IsSelected = true
slog.Info("entity selected", slog.String("position", e.Position.Value.String()))
return true
}
}
return false
}
func DrawSelection(screen *ebiten.Image, e *Entity) {
if e.Image.IsEnabled && e.Position.IsEnabled && e.Selection.IsEnabled {
if e.Selection.Value.IsSelected {
opt := &ebiten.DrawImageOptions{}
opt.GeoM.Translate(float64(e.Position.Value.X-SELECTION_HALO_WIDTH/2), float64(e.Position.Value.Y-SELECTION_HALO_WIDTH/2))
screen.DrawImage(e.Selection.Value.Halo, opt)
}
}
}
|
