1 files changed, 100 insertions, 0 deletions
diff --git a/Source/Graphics/palette.cpp b/Source/Graphics/palette.cpp
new file mode 100644
index 00000000..d66afc83
--- /dev/null
+++ b/Source/Graphics/palette.cpp
@@ -0,0 +1,100 @@
+//-----------------------------------------------------------------------------
+//           Name: palette.cpp
+//      Developer: Wolfire Games LLC
+//    Description: 
+//        License: Read below
+//-----------------------------------------------------------------------------
+//
+//
+//   Copyright 2022 Wolfire Games LLC
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+//
+//-----------------------------------------------------------------------------
+#include "palette.h"
+
+#include <Internal/memwrite.h>
+
+#include <tinyxml.h>
+
+void ReadPaletteFromRAM( OGPalette &palette, const std::vector<char> &data )
+{
+    int index=0;
+    int num_colors;
+    memread(&num_colors, sizeof(int), 1, data, index);
+    palette.resize(num_colors);
+    for(int i=0; i<num_colors; ++i){
+        LabeledColor &lc = palette[i];
+        int str_len;
+        memread(&str_len, sizeof(int), 1, data, index);
+        lc.label.resize(str_len);
+        memread(&lc.label[0], sizeof(char), str_len, data, index);
+        memread(&lc.color, sizeof(vec3), 1, data, index);
+        memread(&lc.channel, sizeof(char), 1, data, index);
+    }
+}
+
+void WritePaletteToRAM( const OGPalette& palette, std::vector<char> &data )
+{
+    int num_colors = palette.size();
+    memwrite(&num_colors, sizeof(int), 1, data);
+    for(int i=0; i<num_colors; ++i){
+        const LabeledColor &lc = palette[i];
+        int str_len = lc.label.size();
+        memwrite(&str_len, sizeof(int), 1, data);
+        memwrite(&lc.label[0], sizeof(char), str_len, data);
+        memwrite(&lc.color, sizeof(vec3), 1, data);
+        memwrite(&lc.channel, sizeof(char), 1, data);
+    }
+}
+
+void WritePaletteToXML( const OGPalette & palette, TiXmlElement* palette_el )
+{
+    for(unsigned i=0; i<palette.size(); ++i){
+        TiXmlElement* color_el = new TiXmlElement("Color");
+        palette_el->LinkEndChild(color_el);
+        const std::string &label = palette[i].label;
+        const vec3 &color = palette[i].color;
+        const char& channel = palette[i].channel;
+        color_el->SetAttribute("label", label.c_str());
+        color_el->SetAttribute("channel", channel);
+        color_el->SetDoubleAttribute("red", color[0]);
+        color_el->SetDoubleAttribute("green", color[1]);
+        color_el->SetDoubleAttribute("blue", color[2]);
+    }
+}
+
+void ReadPaletteFromXML( OGPalette &palette, const TiXmlElement* palette_el )
+{
+    const TiXmlElement* color_el = palette_el->FirstChildElement("Color");
+    while(color_el){
+        LabeledColor lc;
+        vec3 &color = lc.color;
+        std::string &label = lc.label;
+        char &channel = lc.channel;
+        color_el->QueryFloatAttribute("red", &color[0]);
+        color_el->QueryFloatAttribute("green", &color[1]);
+        color_el->QueryFloatAttribute("blue", &color[2]);
+        int channel_int;
+        color_el->QueryIntAttribute("channel", &channel_int);
+        channel = channel_int;
+        const char* c = color_el->Attribute("label");
+        if(c){
+            label = c;
+        }
+        if(!label.empty() && channel < max_palette_elements){
+            palette.push_back(lc);
+        }
+        color_el = color_el->NextSiblingElement();
+    }
+}