Added weapon system. Animated laser.

elements/laser.go

@@ -1,27 +1,30 @@
 package elements
 
 import (
-	"image/color"
+	"image"
+	"mover/assets"
 	"mover/gamedata"
 
 	"github.com/hajimehoshi/ebiten/v2"
 )
 
 type Laser struct {
-	Sprite   *ebiten.Image
-	position gamedata.Coordinates
-	angle    float64
-	cycle    int
-	firing   bool
+	Sprite    *ebiten.Image
+	position  gamedata.Coordinates
+	angle     float64
+	cycle     int
+	firing    bool
+	numcycles int
 }
 
 func NewLaser(pos gamedata.Coordinates, angle float64) *Laser {
 	l := &Laser{
-		Sprite:   ebiten.NewImage(200, 20),
-		angle:    angle,
-		cycle:    0,
-		position: pos,
-		firing:   false,
+		Sprite:    ebiten.NewImage(200, 20),
+		angle:     angle,
+		cycle:     0,
+		position:  pos,
+		firing:    false,
+		numcycles: 5,
 	}
 	return l
 }
@@ -33,7 +36,16 @@ func (l *Laser) Update() error {
 
 func (l *Laser) Draw() {
 	l.Sprite.Clear()
-	l.Sprite.Fill(color.White)
+	//l.Sprite.Fill(color.White)
+
+	idx := (l.cycle / 4) % l.numcycles
+	x0 := 0
+	y0 := 20 * idx
+	x1 := 200
+	y1 := y0 + 20
+
+	l.Sprite.DrawImage(assets.ImageBank[assets.LaserBeam].SubImage(image.Rect(x0, y0, x1, y1)).(*ebiten.Image), nil)
+
 }
 
 func (l *Laser) GetPosition() gamedata.Coordinates {