67
37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
#pragma once
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#include <cstdint>
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#include <mutex>
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include "Web/MapRegistry.h"
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// -------------------------------------------------------------------------
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// MapTileService
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// Loads a full map PNG on first request, caches it in memory, and serves
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// 512×512 tiles on demand (nearest-neighbour resampled).
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// -------------------------------------------------------------------------
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class MapTileService {
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public:
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/// Return PNG-encoded bytes for the requested tile.
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/// errCode is set to one of: 200, 400, 404, 500.
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/// An empty vector is returned for any non-200 result.
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std::vector<uint8_t> GetTile(const MapInfo& map, int tileX, int tileY,
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int& errCode);
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private:
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struct Image {
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std::vector<uint8_t> pixels; // RGBA, row-major
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int w = 0;
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int h = 0;
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};
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std::mutex m_mutex;
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std::unordered_map<std::string, Image> m_cache; // mapId → loaded image
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/// Return cached Image or attempt to load it. Returns nullptr on failure.
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const Image* LoadOrGet(const std::string& mapId);
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};
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