Starting to add in assets.

client/elements/dino.go

@@ -0,0 +1,106 @@
+package elements
+
+import (
+	"client/assets"
+	"client/gamedata"
+	"image"
+
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+const (
+	dinoWidth  = 24
+	dinoHeight = 24
+)
+
+type DinoInfo struct {
+	DinoAction gamedata.DinoAction
+	NumCycles  int
+	XOffset    int
+}
+
+var (
+	dinoCycleCount = []DinoInfo{
+		{gamedata.DinoActionIdle, 4, 0},
+		{gamedata.DinoActionWalk, 6, 4},
+		{gamedata.DinoActionSlap, 3, 10},
+	}
+)
+
+type Dino struct {
+	Sprite     *ebiten.Image
+	dinotype   gamedata.DinoType
+	dinoaction gamedata.DinoAction
+	cycle      int
+	asset      *ebiten.Image
+	left       bool
+	slapping   bool
+}
+
+func NewDino(dtype gamedata.DinoType) *Dino {
+	dino := &Dino{
+		Sprite:     ebiten.NewImage(dinoWidth*2, dinoHeight*2),
+		cycle:      0,
+		dinotype:   dtype,
+		dinoaction: gamedata.DinoActionIdle,
+	}
+
+	switch dtype {
+	case gamedata.DinoTypeBlue:
+		dino.asset = assets.ImageBank[assets.Blue]
+	case gamedata.DinoTypeGreen:
+		dino.asset = assets.ImageBank[assets.Green]
+	case gamedata.DinoTypeRed:
+		dino.asset = assets.ImageBank[assets.Red]
+	case gamedata.DinoTypeYellow:
+		dino.asset = assets.ImageBank[assets.Yellow]
+	}
+
+	return dino
+}
+
+func (d *Dino) Update() {
+	d.cycle++
+}
+
+func (d *Dino) Draw() {
+	d.Sprite.Clear()
+
+	idx := d.cycle / 8 % dinoCycleCount[d.dinoaction].NumCycles
+	x0 := dinoWidth * (idx + dinoCycleCount[d.dinoaction].XOffset)
+	y0 := 0
+	x1 := x0 + dinoWidth
+	y1 := dinoHeight
+
+	op := &ebiten.DrawImageOptions{}
+	if d.left {
+		op.GeoM.Scale(-1, 1)
+		op.GeoM.Translate(dinoWidth, 0)
+	}
+	op.GeoM.Translate(-dinoWidth/2, -dinoHeight/2)
+	op.GeoM.Scale(2, 2)
+	op.GeoM.Translate(dinoWidth, dinoHeight)
+	d.Sprite.DrawImage(d.asset.SubImage(image.Rect(x0, y0, x1, y1)).(*ebiten.Image), op)
+
+	if d.slapping && idx >= dinoCycleCount[d.dinoaction].NumCycles-1 {
+		d.slapping = false
+	}
+
+}
+
+func (d *Dino) SetAction(action gamedata.DinoAction) {
+	if d.slapping {
+		//wait until we're done slapping
+	} else {
+		d.dinoaction = action
+		if action == gamedata.DinoActionSlap {
+			d.cycle = 0
+			d.slapping = true
+		}
+	}
+
+}
+
+func (d *Dino) SetLeft(left bool) {
+	d.left = left
+}