mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 13:07:26 +01:00
108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
// Copyright 2014 Hajime Hoshi
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package blocks
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import (
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"bytes"
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"image"
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"image/color"
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_ "image/png"
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"github.com/hajimehoshi/ebiten/v2"
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rblocks "github.com/hajimehoshi/ebiten/v2/examples/resources/images/blocks"
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"github.com/hajimehoshi/ebiten/v2/inpututil"
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)
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var imageBackground *ebiten.Image
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func init() {
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img, _, err := image.Decode(bytes.NewReader(rblocks.Background_png))
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if err != nil {
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panic(err)
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}
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imageBackground = ebiten.NewImageFromImage(img)
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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 anyGamepadAbstractButtonPressed(i *Input) bool {
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if !i.gamepadConfig.IsInitialized() {
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return false
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}
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for _, b := range virtualGamepadButtons {
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if i.gamepadConfig.IsButtonPressed(b) {
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return true
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}
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}
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return false
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}
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func (s *TitleScene) Update(state *GameState) error {
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s.count++
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if inpututil.IsKeyJustPressed(ebiten.KeySpace) {
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state.SceneManager.GoTo(NewGameScene())
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return nil
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}
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if anyGamepadAbstractButtonPressed(state.Input) {
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state.SceneManager.GoTo(NewGameScene())
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return nil
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}
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// If 'abstract' gamepad buttons are not set and any gamepad buttons are pressed,
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// go to the gamepad configuration scene.
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if id := state.Input.GamepadIDButtonPressed(); id >= 0 {
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g := &GamepadScene{}
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g.gamepadID = id
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state.SceneManager.GoTo(g)
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return nil
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}
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return nil
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}
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func (s *TitleScene) Draw(r *ebiten.Image) {
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s.drawTitleBackground(r, s.count)
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drawLogo(r, "BLOCKS")
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message := "PRESS SPACE TO START"
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x := 0
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y := ScreenHeight - 48
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drawTextWithShadowCenter(r, message, x, y, 1, color.NRGBA{0x80, 0, 0, 0xff}, ScreenWidth)
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}
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func (s *TitleScene) drawTitleBackground(r *ebiten.Image, c int) {
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w, h := imageBackground.Size()
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op := &ebiten.DrawImageOptions{}
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for i := 0; i < (ScreenWidth/w+1)*(ScreenHeight/h+2); i++ {
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op.GeoM.Reset()
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dx := -(c / 4) % w
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dy := (c / 4) % h
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dstX := (i%(ScreenWidth/w+1))*w + dx
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dstY := (i/(ScreenWidth/w+1)-1)*h + dy
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op.GeoM.Translate(float64(dstX), float64(dstY))
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r.DrawImage(imageBackground, op)
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}
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}
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func drawLogo(r *ebiten.Image, str string) {
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const scale = 4
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x := 0
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y := 32
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drawTextWithShadowCenter(r, str, x, y, scale, color.NRGBA{0x00, 0x00, 0x80, 0xff}, ScreenWidth)
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}
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