Noah Petherbridge
e141203c4b
Known bugs: * The Pixel format in the Grid has DX and DY attributes and it wreaks havoc on collision detection in Play Mode when you come straight from the editor. Reloading the map from disk to play is OK cuz it lacks these attrs.
32 lines
773 B
Go
32 lines
773 B
Go
package doodle
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import "git.kirsle.net/apps/doodle/events"
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// Scene is an abstraction for a game mode in Doodle. The app points to one
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// scene at a time and that scene has control over the main loop, and its own
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// state information.
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type Scene interface {
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Name() string
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Setup(*Doodle) error
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Destroy() error
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// Loop should update the scene's state but not draw anything.
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Loop(*Doodle, *events.State) error
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// Draw should use the scene's state to figure out what pixels need
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// to draw to the screen.
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Draw(*Doodle) error
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}
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// Goto a scene. First it unloads the current scene.
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func (d *Doodle) Goto(scene Scene) error {
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// Teardown existing scene.
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if d.scene != nil {
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d.scene.Destroy()
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}
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log.Info("Goto Scene")
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d.scene = scene
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return d.scene.Setup(d)
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}
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