ebiten/example/game/rects/rects.go
Hajime Hoshi 2b04f74614 Add Rects
2013-06-23 02:01:26 +09:00

61 lines
1.2 KiB
Go

package rects
import (
"github.com/hajimehoshi/go.ebiten/graphics"
"github.com/hajimehoshi/go.ebiten/graphics/matrix"
"image/color"
"math/rand"
"time"
)
type Rects struct {
rectsTexture graphics.Texture
}
func New() *Rects {
return &Rects{}
}
func (game *Rects) ScreenWidth() int {
return 256
}
func (game *Rects) ScreenHeight() int {
return 240
}
func (game *Rects) Init(tf graphics.TextureFactory) {
game.rectsTexture = tf.NewTexture(game.ScreenWidth(), game.ScreenHeight())
}
func (game *Rects) Update() {
}
func (game *Rects) Draw(g graphics.GraphicsContext, offscreen graphics.Texture) {
g.SetOffscreen(game.rectsTexture.ID)
x := rand.Intn(game.ScreenWidth())
y := rand.Intn(game.ScreenHeight())
width := rand.Intn(game.ScreenWidth() - x)
height := rand.Intn(game.ScreenHeight() - y)
red := uint8(rand.Intn(256))
green := uint8(rand.Intn(256))
blue := uint8(rand.Intn(256))
alpha := uint8(rand.Intn(256))
g.DrawRect(
graphics.Rect{x, y, width, height},
&color.RGBA{red, green, blue, alpha},
)
g.SetOffscreen(offscreen.ID)
g.DrawTexture(game.rectsTexture,
matrix.IdentityGeometry(),
matrix.IdentityColor())
}
func init() {
rand.Seed(time.Now().UnixNano())
}