mirror of
https://github.com/OpenDiablo2/OpenDiablo2
synced 2025-02-10 02:26:29 -05:00
2e814f29b0
* removed position,scale,rotation components * added Transform component that contains position, rotation, and scale * scene graph update now regenerates the local mat4 using the transform component * akara bugfix: adding new subscriptions will process existing entities * added `--testscene` arg for testing individual scenes in isolation * added rotation support to d2interface.Surface
74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
package d2systems
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import (
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2components"
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"time"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2util"
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"github.com/gravestench/akara"
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)
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const (
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defaultScale float64 = 1
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)
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const (
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logPrefixTimeScaleSystem = "Time Scale"
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)
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// static check that TimeScaleSystem implements the System interface
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var _ akara.System = &TimeScaleSystem{}
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// TimeScaleSystem should be the first system added to the world, and whose only job is to
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// apply a scalar the world's TimeDelta between frames. It's useful for slowing down or speeding
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// up the game time without affecting the render rate.
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type TimeScaleSystem struct {
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akara.BaseSystem
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*d2util.Logger
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scale float64
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d2components.DirtyFactory
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d2components.CommandRegistrationFactory
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}
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// Init will initialize the TimeScale system
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func (t *TimeScaleSystem) Init(world *akara.World) {
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t.World = world
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t.Logger = d2util.NewLogger()
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t.SetPrefix(logPrefixTimeScaleSystem)
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t.Info("initializing ...")
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t.InjectComponent(&d2components.CommandRegistration{}, &t.CommandRegistration)
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t.InjectComponent(&d2components.Dirty{}, &t.Dirty)
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t.registerCommands()
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t.scale = defaultScale
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}
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// Update scales the worlds time delta for this frame
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func (t *TimeScaleSystem) Update() {
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if !t.Active() {
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return
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}
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t.World.TimeDelta = time.Duration(float64(t.World.TimeDelta) * t.scale)
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}
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func (t *TimeScaleSystem) registerCommands() {
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e := t.NewEntity()
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reg := t.AddCommandRegistration(e)
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t.AddDirty(e)
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reg.Name = "timescale"
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reg.Description = "set the time scale of the game (default is 1.0)"
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reg.Callback = func(scale float64) {
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t.Infof("setting time scale to %.1f", scale)
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t.scale = scale
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}
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}
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