64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package sprite blah blah blah TODO.
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//
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// Typical main loop:
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//
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// for each frame {
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// quantize time.Now() to a clock.Time
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// process UI events
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// modify the scene's nodes and animations (Arranger values)
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// e.Render(scene, t)
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// }
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package sprite
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import (
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"image"
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"code.google.com/p/go.mobile/f32"
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"code.google.com/p/go.mobile/sprite/clock"
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)
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type Arranger interface {
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Arrange(e Engine, n *Node, t clock.Time)
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}
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type Sheet int32
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type Texture int32
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type Engine interface {
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Register(n *Node)
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Unregister(n *Node)
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LoadSheet(a image.Image) (Sheet, error)
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LoadTexture(s Sheet, bounds image.Rectangle) (Texture, error)
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UnloadSheet(s Sheet) error
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UnloadTexture(x Texture) error
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SetTexture(n *Node, t clock.Time, x Texture)
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SetTransform(n *Node, t clock.Time, m f32.Affine) // sets transform relative to parent.
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Render(scene *Node, t clock.Time)
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}
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type Node struct {
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Parent, FirstChild, LastChild, PrevSibling, NextSibling *Node
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Arranger Arranger
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// EngineFields contains fields that should only be accessed by Engine
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// implementations. It is exported because such implementations can be
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// in other packages.
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EngineFields struct {
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// TODO: separate TexDirty and TransformDirty bits?
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Dirty bool
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Index int32
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Texture Texture
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}
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}
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// TODO: Node parent/sibling/child-related methods.
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