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54 lines
1.1 KiB
54 lines
1.1 KiB
package main |
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import ( |
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"image" |
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_ "image/png" |
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"github.com/hajimehoshi/ebiten/v2" |
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) |
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var batSS *BatSpriteSheet |
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// BatSpriteSheet represents a collection of sprite images. |
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type BatSpriteSheet struct { |
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Frame1 *ebiten.Image |
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Frame2 *ebiten.Image |
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Frame3 *ebiten.Image |
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Frame4 *ebiten.Image |
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Frame5 *ebiten.Image |
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Frame6 *ebiten.Image |
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Frame7 *ebiten.Image |
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} |
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// LoadBatSpriteSheet loads the embedded BatSpriteSheet. |
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func LoadBatSpriteSheet() (*BatSpriteSheet, error) { |
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tileSize := 32 |
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f, err := assetsFS.Open("assets/creeps/bat/fly.png") |
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if err != nil { |
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return nil, err |
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} |
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img, _, err := image.Decode(f) |
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if err != nil { |
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return nil, err |
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} |
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sheet := ebiten.NewImageFromImage(img) |
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// spriteAt returns a sprite at the provided coordinates. |
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spriteAt := func(x, y int) *ebiten.Image { |
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return sheet.SubImage(image.Rect(x*tileSize, (y+1)*tileSize, (x+1)*tileSize, y*tileSize)).(*ebiten.Image) |
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} |
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// Populate PlayerSpriteSheet. |
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s := &BatSpriteSheet{} |
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s.Frame1 = spriteAt(0, 0) |
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s.Frame2 = spriteAt(1, 0) |
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s.Frame3 = spriteAt(2, 0) |
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s.Frame4 = spriteAt(3, 0) |
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s.Frame5 = spriteAt(4, 0) |
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s.Frame6 = spriteAt(5, 0) |
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s.Frame7 = spriteAt(6, 0) |
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return s, nil |
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}
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