84 lines
2.0 KiB
Go
84 lines
2.0 KiB
Go
package d2data
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import (
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"strings"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2datautils"
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)
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const (
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numCofNameBytes = 8
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numFlagBytes = 144
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)
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// AnimationDataRecord represents a single entry in the animation data dictionary file
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type AnimationDataRecord struct {
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// COFName is the name of the COF file used for this animation
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COFName string
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// FramesPerDirection specifies how many frames are in each direction
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FramesPerDirection int
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// AnimationSpeed represents a value of X where the rate is a ration of (x/255) at 25FPS
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AnimationSpeed int
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// Flags are used in keyframe triggers
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Flags []byte
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}
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// AnimationData represents all of the animation data records, mapped by the COF index
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type AnimationData map[string][]*AnimationDataRecord
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// LoadAnimationData loads the animation data table into the global AnimationData dictionary
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func LoadAnimationData(rawData []byte) (AnimationData, error) {
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animdata := make(AnimationData)
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streamReader := d2datautils.CreateStreamReader(rawData)
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for !streamReader.EOF() {
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var dataCount int
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b, err := streamReader.ReadInt32()
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if err != nil {
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return nil, err
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}
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dataCount = int(b)
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for i := 0; i < dataCount; i++ {
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cofNameBytes, err := streamReader.ReadBytes(numCofNameBytes)
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if err != nil {
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return nil, err
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}
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fpd, err := streamReader.ReadInt32()
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if err != nil {
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return nil, err
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}
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animSpeed, err := streamReader.ReadInt32()
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if err != nil {
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return nil, err
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}
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data := &AnimationDataRecord{
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COFName: strings.ReplaceAll(string(cofNameBytes), string(byte(0)), ""),
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FramesPerDirection: int(fpd),
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AnimationSpeed: int(animSpeed),
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}
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flagBytes, err := streamReader.ReadBytes(numFlagBytes)
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if err != nil {
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return nil, err
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}
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data.Flags = flagBytes
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cofIndex := strings.ToLower(data.COFName)
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if _, found := animdata[cofIndex]; !found {
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animdata[cofIndex] = make([]*AnimationDataRecord, 0)
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}
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animdata[cofIndex] = append(animdata[cofIndex], data)
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}
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}
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return animdata, nil
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}
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