51 lines
1.5 KiB
Go
51 lines
1.5 KiB
Go
package engine
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import (
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"image"
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"github.com/hajimehoshi/ebiten/v2"
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)
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// Collider components have tangible form.
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type Collider interface {
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CollidesWith(image.Rectangle) bool
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}
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// Drawer components can draw themselves. Draw is called often.
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// Each component is responsible for calling Draw on its child components
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// (so that hiding the parent can hide the children, etc).
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type Drawer interface {
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Draw(screen *ebiten.Image, geom ebiten.GeoM)
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}
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// Identifier components have a sense of self. This makes it easier for
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// components to find and interact with one another.
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type Identifier interface {
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Ident() string
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}
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// Prepper components can be prepared. It is called after the component
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// database has been populated but before the game is run. The component can
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// store the reference to game, if needed, and also query the component database.
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type Prepper interface {
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Prepare(game *Game)
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}
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// Scanner components can be scanned. It is called when the game tree is walked
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// (such as when the game component database is constructed).
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// Scan should return a slice containing all immediate subcomponents.
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type Scanner interface {
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Scan() []interface{}
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}
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// Updater components can update themselves. Update is called repeatedly.
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// Each component is responsible for calling Update on its child components
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// (so that disabling the parent prevents updates to the children, etc).
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type Updater interface {
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Update() error
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}
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// ZPositioner is used to reorder layers.
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type ZPositioner interface {
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Z() float64
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}
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