mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-26 19:58:54 +01:00
84 lines
1.9 KiB
Go
84 lines
1.9 KiB
Go
// Copyright 2016 The Ebiten Authors
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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 twenty48
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import (
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"math/rand"
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"time"
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"github.com/hajimehoshi/ebiten/v2"
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)
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func init() {
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rand.Seed(time.Now().UnixNano())
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}
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const (
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ScreenWidth = 420
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ScreenHeight = 600
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boardSize = 4
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)
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// Game represents a game state.
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type Game struct {
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input *Input
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board *Board
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boardImage *ebiten.Image
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}
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// NewGame generates a new Game object.
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func NewGame() (*Game, error) {
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g := &Game{
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input: NewInput(),
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}
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var err error
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g.board, err = NewBoard(boardSize)
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if err != nil {
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return nil, err
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}
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return g, nil
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}
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// Layout implements ebiten.Game's Layout.
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func (g *Game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) {
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return ScreenWidth, ScreenHeight
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}
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// Update updates the current game state.
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func (g *Game) Update() error {
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g.input.Update()
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if err := g.board.Update(g.input); 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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// Draw draws the current game to the given screen.
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func (g *Game) Draw(screen *ebiten.Image) {
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if g.boardImage == nil {
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w, h := g.board.Size()
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g.boardImage = ebiten.NewImage(w, h)
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}
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screen.Fill(backgroundColor)
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g.board.Draw(g.boardImage)
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op := &ebiten.DrawImageOptions{}
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sw, sh := screen.Size()
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bw, bh := g.boardImage.Size()
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x := (sw - bw) / 2
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y := (sh - bh) / 2
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op.GeoM.Translate(float64(x), float64(y))
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screen.DrawImage(g.boardImage, op)
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}
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