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100 lines
3.0 KiB
100 lines
3.0 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 sandstoneSS *EnvironmentSpriteSheet |
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// EnvironmentSpriteSheet represents a collection of sprite images. |
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type EnvironmentSpriteSheet struct { |
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FloorA *ebiten.Image |
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FloorB *ebiten.Image |
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FloorC *ebiten.Image |
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WallTop *ebiten.Image |
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WallBottom *ebiten.Image |
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WallBottomLeft *ebiten.Image |
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WallBottomRight *ebiten.Image |
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WallLeft *ebiten.Image |
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WallRight *ebiten.Image |
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WallTopLeft *ebiten.Image |
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WallTopRight *ebiten.Image |
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WallPillar *ebiten.Image |
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TorchTop1 *ebiten.Image |
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TorchTop2 *ebiten.Image |
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TorchTop3 *ebiten.Image |
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TorchTop4 *ebiten.Image |
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TorchTop5 *ebiten.Image |
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TorchTop6 *ebiten.Image |
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TorchTop7 *ebiten.Image |
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TorchTop8 *ebiten.Image |
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TorchTop9 *ebiten.Image |
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TorchMulti *ebiten.Image |
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} |
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// LoadEnvironmentSpriteSheet loads the embedded EnvironmentSpriteSheet. |
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func LoadEnvironmentSpriteSheet() (*EnvironmentSpriteSheet, error) { |
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tileSize := 32 |
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// Populate EnvironmentSpriteSheet. |
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s := &EnvironmentSpriteSheet{} |
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// Dungeon sprites |
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dungeonFile, err := assetsFS.Open("assets/sandstone-dungeon/Tiles-SandstoneDungeons.png") |
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if err != nil { |
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return nil, err |
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} |
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defer dungeonFile.Close() |
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dungeonImg, _, err := image.Decode(dungeonFile) |
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if err != nil { |
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return nil, err |
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} |
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dungeonSheet := ebiten.NewImageFromImage(dungeonImg) |
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// dungeonSpriteAt returns a sprite at the provided coordinates. |
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dungeonSpriteAt := func(x, y int) *ebiten.Image { |
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return dungeonSheet.SubImage(image.Rect(x*tileSize, (y+1)*tileSize, (x+1)*tileSize, y*tileSize)).(*ebiten.Image) |
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} |
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s.FloorA = dungeonSpriteAt(3, 1) |
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s.FloorB = dungeonSpriteAt(2, 0) |
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s.FloorC = dungeonSpriteAt(2, 1) |
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s.WallTop = dungeonSpriteAt(1, 2) |
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s.WallBottom = dungeonSpriteAt(1, 6) |
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s.WallBottomLeft = dungeonSpriteAt(2, 6) |
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s.WallBottomRight = dungeonSpriteAt(0, 6) |
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s.WallLeft = dungeonSpriteAt(2, 2) |
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s.WallRight = dungeonSpriteAt(0, 2) |
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s.WallTopLeft = dungeonSpriteAt(2, 3) |
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s.WallTopRight = dungeonSpriteAt(0, 3) |
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s.WallPillar = dungeonSpriteAt(8, 4) |
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// Prop sprites |
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propFile, err := assetsFS.Open("assets/sandstone-dungeon/Tiles-Props-pack.png") |
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if err != nil { |
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return nil, err |
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} |
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defer propFile.Close() |
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propImg, _, err := image.Decode(propFile) |
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if err != nil { |
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return nil, err |
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} |
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propSheet := ebiten.NewImageFromImage(propImg) |
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// dungeonSpriteAt returns a sprite at the provided coordinates. |
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propSpriteAt := func(x, y int) *ebiten.Image { |
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return propSheet.SubImage(image.Rect(x*tileSize, (y+1)*tileSize, (x+1)*tileSize, y*tileSize)).(*ebiten.Image) |
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} |
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s.TorchTop1 = propSpriteAt(0, 2) |
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s.TorchTop2 = propSpriteAt(1, 2) |
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s.TorchTop3 = propSpriteAt(2, 2) |
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s.TorchTop4 = propSpriteAt(3, 2) |
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s.TorchTop5 = propSpriteAt(4, 2) |
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s.TorchTop6 = propSpriteAt(5, 2) |
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s.TorchTop7 = propSpriteAt(6, 2) |
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s.TorchTop8 = propSpriteAt(7, 2) |
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s.TorchTop9 = propSpriteAt(8, 2) |
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s.TorchMulti = propSpriteAt(2, 4) |
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return s, nil |
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}
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