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package main
import (
"log"
"image"
_ "image/png"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/ebitenutil"
)
const (
screenWidth = 240
screenHeight = 240
tileSize = 16
playerSpeed = 0.2
jumpHeight = 0.2
)
type Game struct {
tilemap *Tilemap
offsetX int
offsetY int
player *GameObject
}
func (g * Game)InitPlayer() {
g.player = &GameObject{
x: 5,
y: 5,
}
playerImage, _, err := ebitenutil.NewImageFromFile("Assets/Main Characters/Ninja Frog/Idle (32x32).png")
if err != nil {
log.Fatal(err)
}
g.player.image = playerImage.SubImage(image.Rect(0, 0, 32, 32)).(*ebiten.Image)
}
func (g *Game) Init() {
tilemap := NewTilemap([][]int{
{
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 218, 243, 243, 243, 243, 243, 243, 243, 243, 243, 218, 243, 244, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 244, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 219, 243, 243, 243, 219, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 218, 243, 243, 243, 243, 243, 243, 243, 243, 243, 244, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
},
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7,
7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 29,
29, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 51,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
},
}, 15)
g.tilemap = &tilemap
g.tilemap.UpdateSurface()
g.InitPlayer()
ebiten.SetWindowSize(screenWidth*2, screenHeight*2)
ebiten.SetWindowTitle("Tiles (Ebitengine Demo)")
if err := ebiten.RunGame(g); err != nil {
log.Fatal(err)
}
}
func (g *Game) Update() error {
if ebiten.IsKeyPressed(ebiten.KeyLeft) || ebiten.IsKeyPressed(ebiten.KeyA) {
g.player.vx = -playerSpeed
}
if ebiten.IsKeyPressed(ebiten.KeyRight) || ebiten.IsKeyPressed(ebiten.KeyD) {
g.player.vx = playerSpeed
}
if g.player.onGround && (ebiten.IsKeyPressed(ebiten.KeySpace) || ebiten.IsKeyPressed(ebiten.KeyUp)) {
g.player.vy = -jumpHeight
}
g.player.Update(*g.tilemap)
return g.tilemap.Update()
}
func (g *Game) Draw(screen *ebiten.Image) {
op := &ebiten.DrawImageOptions{}
op.GeoM.Translate(float64(g.offsetX), float64(g.offsetY))
screen.DrawImage(g.tilemap.surface, op)
g.player.Draw(screen, *g.tilemap)
ebitenutil.DebugPrint(screen, "Hello, World!")
}
func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int){
return screenWidth, screenHeight
}
func main() {
ebiten.SetWindowTitle("Hello, World!")
game := &Game{}
game.Init()
if err := ebiten.RunGame(game); err != nil {
log.Fatal(err)
}
}
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