up3

server/player/skin/model_config.go

@@ -0,0 +1,37 @@
+package skin
+
+import (
+	"encoding/json"
+)
+
+// ModelConfig specifies the way that the model (geometry data) is used to form the complete skin. It does
+// this by setting model names for specific keys found in the struct.
+type ModelConfig struct {
+	// Default is the 'default' model to use. This model is essentially the model of the skin that will be
+	// used at all times, when nothing special is being done. (For example, an animation)
+	// The field holds the name of one of the models present in the JSON of the skin's model.
+	// This field should always be filled out.
+	Default string `json:"default"`
+	// AnimatedFace is the model of an animation played over the face. This field should be set if the model
+	// contains the model of an animation, in which case this field should hold the name of that model.
+	AnimatedFace string `json:"animated_face,omitempty"`
+}
+
+// modelConfigContainer is a container of the model config data when encoded.
+type modelConfigContainer struct {
+	Geometry ModelConfig `json:"geometry"`
+}
+
+// Encode encodes a ModelConfig into its JSON representation.
+func (cfg ModelConfig) Encode() []byte {
+	b, _ := json.Marshal(modelConfigContainer{Geometry: cfg})
+	return b
+}
+
+// DecodeModelConfig attempts to decode a ModelConfig from the JSON data passed. If not successful, an error
+// is returned.
+func DecodeModelConfig(b []byte) (ModelConfig, error) {
+	var m modelConfigContainer
+	err := json.Unmarshal(b, &m)
+	return m.Geometry, err
+}