mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 21:32:20 +02:00
70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
package blocks
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import (
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"github.com/hajimehoshi/go-ebiten/graphics"
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"github.com/hajimehoshi/go-ebiten/graphics/matrix"
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"github.com/hajimehoshi/go-ebiten/ui"
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"image/color"
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)
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func init() {
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texturePaths["background"] = "images/blocks/background.png"
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}
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type TitleScene struct {
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count int
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}
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func NewTitleScene() *TitleScene {
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return &TitleScene{}
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}
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func (s *TitleScene) Update(state *GameState) {
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s.count++
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if state.Input.StateForKey(ui.KeySpace) == 1 {
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state.SceneManager.GoTo(NewGameScene())
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}
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}
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func (s *TitleScene) Draw(context graphics.Context, textures Textures) {
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drawTitleBackground(context, textures, s.count)
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drawLogo(context, textures, "BLOCKS")
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message := "PRESS SPACE TO START"
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x := (ScreenWidth - textWidth(message)) / 2
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y := ScreenHeight - 48
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drawTextWithShadow(context, textures, message, x, y, 1, color.RGBA{0x80, 0, 0, 0xff})
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}
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func drawTitleBackground(context graphics.Context, textures Textures, c int) {
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const textureWidth = 32
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const textureHeight = 32
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backgroundTextureId := textures.GetTexture("background")
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parts := []graphics.TexturePart{}
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for j := -1; j < ScreenHeight/textureHeight+1; j++ {
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for i := 0; i < ScreenWidth/textureWidth+1; i++ {
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parts = append(parts, graphics.TexturePart{
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LocationX: i * textureWidth,
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LocationY: j * textureHeight,
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Source: graphics.Rect{0, 0, textureWidth, textureHeight},
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})
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}
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}
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dx := (-c / 4) % textureWidth
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dy := (c / 4) % textureHeight
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geo := matrix.IdentityGeometry()
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geo.Translate(float64(dx), float64(dy))
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clr := matrix.IdentityColor()
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context.Texture(backgroundTextureId).Draw(parts, geo, clr)
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}
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func drawLogo(context graphics.Context, textures Textures, str string) {
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scale := 4
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textWidth := textWidth(str) * scale
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x := (ScreenWidth - textWidth) / 2
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y := 32
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drawTextWithShadow(context, textures, str, x, y, scale, color.RGBA{0x00, 0x00, 0x80, 0xff})
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}
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