ebiten/example/blocks/title_scene.go

70 lines
1.8 KiB
Go
Raw Normal View History

2013-12-18 10:05:28 +01:00
package blocks
import (
"github.com/hajimehoshi/go-ebiten/graphics"
"github.com/hajimehoshi/go-ebiten/graphics/matrix"
2013-12-18 19:21:25 +01:00
"github.com/hajimehoshi/go-ebiten/ui"
2013-12-18 10:05:28 +01:00
"image/color"
)
2013-12-18 19:21:25 +01:00
func init() {
texturePaths["background"] = "images/blocks/background.png"
}
2013-12-18 10:05:28 +01:00
type TitleScene struct {
count int
}
func NewTitleScene() *TitleScene {
return &TitleScene{}
}
2013-12-18 19:21:25 +01:00
func (s *TitleScene) Update(state *GameState) {
2013-12-18 10:05:28 +01:00
s.count++
2013-12-18 19:21:25 +01:00
if state.Input.StateForKey(ui.KeySpace) == 1 {
state.SceneManager.GoTo(NewGameScene())
}
2013-12-18 10:05:28 +01:00
}
2014-05-11 12:44:36 +02:00
func (s *TitleScene) Draw(context graphics.Context, textures Textures) {
2014-05-03 08:25:41 +02:00
drawTitleBackground(context, textures, s.count)
drawLogo(context, textures, "BLOCKS")
2013-12-18 19:21:25 +01:00
message := "PRESS SPACE TO START"
2014-01-07 15:29:12 +01:00
x := (ScreenWidth - textWidth(message)) / 2
y := ScreenHeight - 48
2014-05-03 08:25:41 +02:00
drawTextWithShadow(context, textures, message, x, y, 1, color.RGBA{0x80, 0, 0, 0xff})
2013-12-18 10:05:28 +01:00
}
2014-05-11 12:44:36 +02:00
func drawTitleBackground(context graphics.Context, textures Textures, c int) {
2013-12-18 10:05:28 +01:00
const textureWidth = 32
const textureHeight = 32
2014-05-03 08:25:41 +02:00
backgroundTextureId := textures.GetTexture("background")
2013-12-18 10:05:28 +01:00
parts := []graphics.TexturePart{}
for j := -1; j < ScreenHeight/textureHeight+1; j++ {
for i := 0; i < ScreenWidth/textureWidth+1; i++ {
parts = append(parts, graphics.TexturePart{
2013-12-18 19:21:25 +01:00
LocationX: i * textureWidth,
LocationY: j * textureHeight,
2013-12-18 10:05:28 +01:00
Source: graphics.Rect{0, 0, textureWidth, textureHeight},
})
}
}
2014-01-07 15:29:12 +01:00
dx := (-c / 4) % textureWidth
dy := (c / 4) % textureHeight
2013-12-18 10:05:28 +01:00
geo := matrix.IdentityGeometry()
geo.Translate(float64(dx), float64(dy))
2013-12-18 19:21:25 +01:00
clr := matrix.IdentityColor()
2014-05-03 06:58:18 +02:00
context.Texture(backgroundTextureId).Draw(parts, geo, clr)
2013-12-18 10:05:28 +01:00
}
2014-05-11 12:44:36 +02:00
func drawLogo(context graphics.Context, textures Textures, str string) {
2013-12-18 19:21:25 +01:00
scale := 4
textWidth := textWidth(str) * scale
x := (ScreenWidth - textWidth) / 2
y := 32
2014-05-03 08:25:41 +02:00
drawTextWithShadow(context, textures, str, x, y, scale, color.RGBA{0x00, 0x00, 0x80, 0xff})
2013-12-18 10:05:28 +01:00
}