mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-27 04:08:53 +01:00
109 lines
2.6 KiB
Go
109 lines
2.6 KiB
Go
// Copyright 2017 The Ebiten Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// +build example
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/hajimehoshi/ebiten"
|
|
"github.com/hajimehoshi/ebiten/ebitenutil"
|
|
)
|
|
|
|
const (
|
|
// Settings
|
|
screenWidth = 1024
|
|
screenHeight = 512
|
|
)
|
|
|
|
var (
|
|
loadedSprite *ebiten.Image
|
|
leftSprite *ebiten.Image
|
|
rightSprite *ebiten.Image
|
|
idleSprite *ebiten.Image
|
|
backgroundImage *ebiten.Image
|
|
)
|
|
|
|
func init() {
|
|
// Preload images
|
|
var err error
|
|
rightSprite, _, err = ebitenutil.NewImageFromFile("_resources/images/platformer/right.png", ebiten.FilterNearest)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
leftSprite, _, err = ebitenutil.NewImageFromFile("_resources/images/platformer/left.png", ebiten.FilterNearest)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
idleSprite, _, err = ebitenutil.NewImageFromFile("_resources/images/platformer/mainchar.png", ebiten.FilterNearest)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
backgroundImage, _, err = ebitenutil.NewImageFromFile("_resources/images/platformer/background.png", ebiten.FilterNearest)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
}
|
|
|
|
var (
|
|
charX = 50
|
|
charY = 380
|
|
)
|
|
|
|
func update(screen *ebiten.Image) error {
|
|
// Controls
|
|
if ebiten.IsKeyPressed(ebiten.KeyA) || ebiten.IsKeyPressed(ebiten.KeyLeft) {
|
|
// Selects preloaded sprite
|
|
loadedSprite = leftSprite
|
|
// Moves character 3px right
|
|
charX -= 3
|
|
} else if ebiten.IsKeyPressed(ebiten.KeyD) || ebiten.IsKeyPressed(ebiten.KeyRight) {
|
|
// Selects preloaded sprite
|
|
loadedSprite = rightSprite
|
|
// Moves character 3px left
|
|
charX += 3
|
|
} else {
|
|
loadedSprite = idleSprite
|
|
}
|
|
|
|
if ebiten.IsRunningSlowly() {
|
|
return nil
|
|
}
|
|
|
|
// Draws Background Image
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(0.5, 0.5)
|
|
screen.DrawImage(backgroundImage, op)
|
|
|
|
// Draws selected sprite image
|
|
op = &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(0.5, 0.5)
|
|
op.GeoM.Translate(float64(charX), float64(charY))
|
|
screen.DrawImage(loadedSprite, op)
|
|
|
|
// FPS counter
|
|
fps := fmt.Sprintf("FPS: %f", ebiten.CurrentFPS())
|
|
ebitenutil.DebugPrint(screen, fps)
|
|
|
|
return nil
|
|
}
|
|
|
|
func main() {
|
|
if err := ebiten.Run(update, screenWidth, screenHeight, 1, "Platformer (Ebiten Demo)"); err != nil {
|
|
panic(err)
|
|
}
|
|
}
|