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mirror of https://github.com/OpenDiablo2/OpenDiablo2 synced 2024-10-01 15:46:17 -04:00
OpenDiablo2/d2core/d2gui/common.go
lord 7e3aff557b
Decouple asset manager from renderer (#730)
* improve AssetManager implementation

Notable changes are:
 * removed the individual managers inside of d2asset, only one asset manager
 * AssetManager now has caches for the types of files it loads
 * created a type for TextDictionary (the txt file structs)
 * fixed a file path bug in d2loader Source
 * fixed a asset stream bug in d2loader Asset
 * d2loader.Loader now needs a d2config.Config on creation (for resolving locale files)
 * updated the mpq file in d2asset test data, added test case for "sub-directory"
 * added a Data method to d2asset.Asset. The data is cached on first full read.
 * renamed ArchiveDataStream to DataStream in d2interface
 * moved palette utility func out of d2asset and into d2util
 * bugfix for MacOS mpq loader issue

* lint fixes, added data caching to filesystem asset

* adding comment for mpq asset close

* Decouple d2asset from d2render

Notable changes in d2common:
 * d2dcc.Load now fully decodes the dcc and stores the directions/frames in the dcc struct
 * un-exported dcc.decodeDirection, it is only used in d2dcc
 * removed font interface from d2interface, we only have one font implementation
 * added `Renderer` method to d2interface.Surface, animations use this to bind to a renderer and create surfaces as they need
 * added `BindRenderer` method to animation interface

Notable changes in d2common/d2asset:
 * **d2asset.NewAssetManager only needs to be passed a d2config.Config**, it is decoupled from d2render
 * exported Animation
 * Animation implementation binds to the renderer to create surfaces only on the first time it is rendered
 * font, dcc, dc6 initialization logic moved out of asset_manager.go
 * for dc6 and dcc animations, the process of decoding and creating render surfaces has been broken into different methods
 * the d2asset.Font struct now stores font table data for initialization purposes

Notable changes in d2core/d2render:
 * Surfaces store a renderer reference, this allows animations to bind to the renderer and create a surface just-in-time

**These last changes should have been a separate PR, sorry.**
Notable changes in d2core/d2ui:
 * ui.NewSprite now handles creating an animation internally, only needs image and palette path as arguments

Notable Changes in d2game:
Because of the change in d2ui, all instances of this code pattern...
```golang
animation, err := screen.asset.LoadAnimation(imgPath, palettePath)
sprite, err := screen.ui.NewSprite(animation)
```
... becomes this ...
```golang
sprite, err := screen.ui.NewSprite(imgPath, palettePath)
```
2020-09-14 17:31:45 -04:00

82 lines
1.6 KiB
Go

package d2gui
import (
"errors"
"image/color"
"github.com/OpenDiablo2/OpenDiablo2/d2core/d2asset"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2math"
)
func loadFont(fontStyle FontStyle) (*d2asset.Font, error) {
config := getFontStyleConfig(fontStyle)
if config == nil {
return nil, errors.New("invalid font style")
}
return singleton.asset.LoadFont(config.fontBasePath+".tbl", config.fontBasePath+".dc6",
config.palettePath)
}
func renderSegmented(animation d2interface.Animation, segmentsX, segmentsY, frameOffset int,
target d2interface.Surface) error {
var currentY int
for y := 0; y < segmentsY; y++ {
var currentX, maxHeight int
for x := 0; x < segmentsX; x++ {
if err := animation.SetCurrentFrame(x + y*segmentsX + frameOffset*segmentsX*segmentsY); err != nil {
return err
}
target.PushTranslation(x+currentX, y+currentY)
err := animation.Render(target)
target.Pop()
if err != nil {
return err
}
width, height := animation.GetCurrentFrameSize()
maxHeight = d2math.MaxInt(maxHeight, height)
currentX += width
}
currentY += maxHeight
}
return nil
}
func half(n int) int {
return n / 2
}
func rgbaColor(rgba uint32) color.RGBA {
result := color.RGBA{}
a, b, g, r := 0, 1, 2, 3
byteWidth := 8
byteMask := 0xff
for idx := 0; idx < 4; idx++ {
shift := idx * byteWidth
component := uint8(rgba>>shift) & uint8(byteMask)
switch idx {
case a:
result.A = component
case b:
result.B = component
case g:
result.G = component
case r:
result.R = component
}
}
return result
}