95 lines
1.6 KiB
Go
95 lines
1.6 KiB
Go
package hero
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import (
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"bytes"
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"github.com/hajimehoshi/ebiten/v2"
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"gitlab.com/kbr4/9heroja/resources"
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"image"
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"log"
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"time"
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)
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const WalkSpeedMs = 400
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var (
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heroImage *ebiten.Image
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walkTicker *time.Ticker
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)
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type Hero struct {
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step int
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}
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type spritePosition struct {
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x int
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y int
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}
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func (h *Hero) DrawHero(screen *ebiten.Image) {
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positions := []spritePosition{
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{0, 166},
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{33, 166},
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{66, 166},
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{99, 166},
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{132, 166},
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{99, 166},
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{66, 166},
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{33, 166},
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}
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p := positions[h.step%5]
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op := &ebiten.DrawImageOptions{}
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screenWidth := screen.Bounds().Max.X
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screenHeight := screen.Bounds().Max.Y
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// ground
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op.GeoM.Reset()
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op.GeoM.Translate(float64(screenWidth/2-16), float64(screenHeight/2-16))
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//op.GeoM.Translate(float64(i*tileSize-floorMod(g.cameraX, tileSize)),
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// float64((ny-1)*tileSize-floorMod(g.cameraY, tileSize)))
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screen.DrawImage(heroImage.SubImage(image.Rect(p.x+1, p.y, p.x+resources.HeroTileSize, p.y+resources.HeroTileSize)).(*ebiten.Image), op)
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}
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func init() {
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img, _, err := image.Decode(bytes.NewReader(resources.Hero_png))
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if err != nil {
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log.Fatal(err)
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}
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heroImage = ebiten.NewImageFromImage(img)
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walkTicker = time.NewTicker(WalkSpeedMs * time.Millisecond)
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// go routine that runs on every tick and increases step
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}
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func NewHero() *Hero {
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hero := &Hero{
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step: 0,
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}
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go func() {
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for {
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select {
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case <-walkTicker.C:
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hero.step++
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if hero.step > 7 {
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hero.step = 0
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}
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}
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}
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}()
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return hero
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}
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func (h *Hero) Walk() {
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walkTicker.Reset(WalkSpeedMs * time.Millisecond)
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}
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func (h *Hero) Stop() {
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h.step = 2
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walkTicker.Stop()
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}
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