palette_manager.hpp

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#pragma once
 
#include "DSCEngine/types/hash_map.hpp"
#include "DSCEngine/resources/asset_data.hpp"
 
namespace DSC
{   
    struct PaletteAllocationResult;
 
    class PaletteManager
    {
    private:
        static int hashColor(const short& color);
    
        void* pal_offset;       
        int free_space[8];
        
        short records4bpp[16];
        
        HashMap<short, int, hashColor, 128> colors_map;                     
        
        int get_chksum(short* colors);
        int get_pal16(short* colors, int chksum);
    public:
        PaletteManager(void* palettes_offset);
        
        int reserve1(int color);
        
        int reserve16(const void* palette4);
        
        
        void unload1(int color);
        
        void unload16(const void* palette4);
        
        
        PaletteAllocationResult try_load(const AssetData* asset);
        
        
        void unload(const AssetData* asset);
        
        ~PaletteManager();
    };
    
    struct PaletteAllocationResult
    {
        short* indices = nullptr;
        
        int length;     
        
        char color_depth;   
        
        bool succeeded;     
        
        ~PaletteAllocationResult(); // this is in order not to worry about the indices deallocation
        
        PaletteAllocationResult(short* indices = nullptr, int length = 0, char color_depth = 0, bool succeeded = false);
        PaletteAllocationResult(const PaletteAllocationResult&);
        PaletteAllocationResult(PaletteAllocationResult&&);
        
        PaletteAllocationResult& operator = (const PaletteAllocationResult& other);
        PaletteAllocationResult& operator = (PaletteAllocationResult&& other);
        
        bool operator == (const PaletteAllocationResult& other) const;
    };
}