mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-26 03:38:55 +01:00
138 lines
3.3 KiB
Go
138 lines
3.3 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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"image/color"
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/ebitenutil"
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"github.com/hajimehoshi/ebiten/examples/common"
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)
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var imageBackground *ebiten.Image
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func init() {
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var err error
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imageBackground, _, err = ebitenutil.NewImageFromFile("_resources/images/blocks/background.png", ebiten.FilterNearest)
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if err != nil {
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panic(err)
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}
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}
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type titleImageParts struct {
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image *ebiten.Image
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count int
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}
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func (t *titleImageParts) Len() int {
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w, h := t.image.Size()
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return (ScreenWidth/w + 1) * (ScreenHeight/h + 2)
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}
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func (t *titleImageParts) Dst(i int) (x0, y0, x1, y1 int) {
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w, h := t.image.Size()
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i, j := i%(ScreenWidth/w+1), i/(ScreenWidth/w+1)-1
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dx := (-t.count / 4) % w
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dy := (t.count / 4) % h
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dstX := i*w + dx
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dstY := j*h + dy
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return dstX, dstY, dstX + w, dstY + h
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}
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func (t *titleImageParts) Src(i int) (x0, y0, x1, y1 int) {
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w, h := t.image.Size()
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return 0, 0, w, h
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}
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type TitleScene struct {
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count int
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parts *titleImageParts
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}
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func NewTitleScene() *TitleScene {
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return &TitleScene{
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parts: &titleImageParts{imageBackground, 0},
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}
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}
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func anyGamepadStdButtonPressed(i *Input) bool {
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for _, b := range gamepadStdButtons {
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if i.gamepadConfig.IsButtonPressed(0, 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 anyGamepadButtonPressed(i *Input) bool {
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bn := ebiten.GamepadButton(ebiten.GamepadButtonNum(0))
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for b := ebiten.GamepadButton(0); b < bn; b++ {
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if i.StateForGamepadButton(b) == 1 {
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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 state.Input.StateForKey(ebiten.KeySpace) == 1 {
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state.SceneManager.GoTo(NewGameScene())
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return nil
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}
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if anyGamepadStdButtonPressed(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 anyGamepadButtonPressed(state.Input) {
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state.SceneManager.GoTo(NewGamepadScene())
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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) error {
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if err := s.drawTitleBackground(r, s.count); err != nil {
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return err
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}
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if err := drawLogo(r, "BLOCKS"); err != nil {
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return err
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}
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message := "PRESS SPACE TO START"
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x := (ScreenWidth - common.ArcadeFont.TextWidth(message)) / 2
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y := ScreenHeight - 48
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if err := common.ArcadeFont.DrawTextWithShadow(r, message, x, y, 1, color.NRGBA{0x80, 0, 0, 0xff}); err != nil {
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return err
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}
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return nil
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}
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func (s *TitleScene) drawTitleBackground(r *ebiten.Image, c int) error {
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s.parts.count = c
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return r.DrawImage(imageBackground, &ebiten.DrawImageOptions{
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ImageParts: s.parts,
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})
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}
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func drawLogo(r *ebiten.Image, str string) error {
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scale := 4
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textWidth := common.ArcadeFont.TextWidth(str) * scale
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x := (ScreenWidth - textWidth) / 2
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y := 32
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return common.ArcadeFont.DrawTextWithShadow(r, str, x, y, scale, color.NRGBA{0x00, 0x00, 0x80, 0xff})
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}
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