Noah Petherbridge
da83231559
Adds some support for "less giant" level screenshots. * In the Editor, the Level->Take Screenshot menu will render a cropped screen shot of just the level viewport on screen. Note: it is not an SDL2 screen copy but generated from scratch from the level data. * In levels themselves, screenshots can be stored inside the level data in three different sizes: large (1280x720), medium and small (each a halved size of the previous). * The first screenshot is created when the level is saved, starting from wherever the scroll position in the editor is at, and recording the 720p view of the level from there. * The level screenshot can be previewed and updated in the Level Properties window of the editor: so you can scroll the editor to just the right position and take a good screenshot to represent your level. * In the future: these embedded level screenshots will be displayed on the Story Mode and other screens to see a preview of each level. Other tweaks: * When taking a Giant Screenshot: a confirm modal will warn the player that it may take a while. And during the screenshot, show the new Wait Modal to block player interaction until the screenshot has finished.
62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
package level
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import (
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"bytes"
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"image"
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"image/png"
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"git.kirsle.net/SketchyMaze/doodle/pkg/balance"
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"git.kirsle.net/go/ui"
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)
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// Helper functions to get a level's embedded screenshot PNGs as textures.
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// HasScreenshot returns whether screenshots exist for the level.
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func (lvl *Level) HasScreenshot() bool {
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var filenames = []string{
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balance.LevelScreenshotLargeFilename,
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balance.LevelScreenshotMediumFilename,
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balance.LevelScreenshotSmallFilename,
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}
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for _, filename := range filenames {
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if lvl.Files.Exists("assets/screenshots/" + filename) {
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return true
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}
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}
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return false
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}
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// GetScreenshotImage returns a screenshot from the level's data as a Go Image.
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// The filename is like "large.png" or "medium.png" and is appended to "assets/screenshots"
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func (lvl *Level) GetScreenshotImage(filename string) (image.Image, error) {
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data, err := lvl.Files.Get("assets/screenshots/" + filename)
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if err != nil {
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return nil, err
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}
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return png.Decode(bytes.NewBuffer(data))
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}
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// GetScreenshotImageAsUIImage returns a ui.Image texture of a screenshot.
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func (lvl *Level) GetScreenshotImageAsUIImage(filename string) (*ui.Image, error) {
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// Have it cached recently?
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if lvl.cacheImages == nil {
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lvl.cacheImages = map[string]*ui.Image{}
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} else if img, ok := lvl.cacheImages[filename]; ok {
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return img, nil
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}
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img, err := lvl.GetScreenshotImage(filename)
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if err != nil {
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return nil, err
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}
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result, err := ui.ImageFromImage(img)
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if err != nil {
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return nil, err
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}
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lvl.cacheImages[filename] = result
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return result, nil
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}
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