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Add examples/tiles

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Hajime Hoshi 2018-02-06 03:52:22 +09:00
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8
examples/_resources/images/license.md
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@ -31,6 +31,14 @@ http://opengameart.org/node/8016
CC0 1.0
```
## tiles.png
```
https://opengameart.org/content/orthographic-outdoor-tiles
CC0 1.0
```
## platformer/right.png platformer/left.png platformer/mainchar.png
```

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examples/tiles/main.go Normal file
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// Copyright 2018 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"
"image"
"log"
"github.com/hajimehoshi/ebiten"
"github.com/hajimehoshi/ebiten/ebitenutil"
)
const (
screenWidth = 240
screenHeight = 240
)
const (
tileSize = 16
tileXNum = 25
)
var (
tilesImage *ebiten.Image
)
func init() {
var err error
tilesImage, _, err = ebitenutil.NewImageFromFile("_resources/images/tiles.png", ebiten.FilterNearest)
if err != nil {
log.Fatal(err)
}
}
var (
layers = [][]int{
{
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 218, 243, 243, 243, 243, 243, 243, 243, 243, 243, 218, 243, 244, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 244, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 219, 243, 243, 243, 219, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
243, 218, 243, 243, 243, 243, 243, 243, 243, 243, 243, 244, 243, 243, 243,
243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
},
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 0, 0, 0, 0,
0, 0, 0, 0, 0, 51, 52, 53, 54, 55, 56, 0, 0, 0, 0,
0, 0, 0, 0, 0, 76, 77, 78, 79, 80, 81, 0, 0, 0, 0,
0, 0, 0, 0, 0, 101, 102, 103, 104, 105, 106, 0, 0, 0, 0,
0, 0, 0, 0, 0, 126, 127, 128, 129, 130, 131, 0, 0, 0, 0,
0, 0, 0, 0, 0, 303, 303, 245, 242, 303, 303, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 245, 242, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 245, 242, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 245, 242, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 245, 242, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 245, 242, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 245, 242, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 245, 242, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 245, 242, 0, 0, 0, 0, 0, 0,
},
}
)
func update(screen *ebiten.Image) error {
if ebiten.IsRunningSlowly() {
return nil
}
// Draw each tile with each DrawImage call.
// As the source images of all DrawImage calls are always same,
// this rendering is done very effectively.
// For more detail, see https://godoc.org/github.com/hajimehoshi/ebiten#Image.DrawImage
const xNum = screenWidth / tileSize
for _, l := range layers {
for i, t := range l {
op := &ebiten.DrawImageOptions{}
op.GeoM.Translate(float64((i%xNum)*tileSize), float64((i/xNum)*tileSize))
sx := (t % tileXNum) * tileSize
sy := (t / tileXNum) * tileSize
r := image.Rect(sx, sy, sx+tileSize, sy+tileSize)
op.SourceRect = &r
screen.DrawImage(tilesImage, op)
}
}
ebitenutil.DebugPrint(screen, fmt.Sprintf("FPS: %0.2f", ebiten.CurrentFPS()))
return nil
}
func main() {
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Tiles (Ebiten Demo)"); err != nil {
log.Fatal(err)
}
}