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#pragma once
#include <functional>
#include "openvic-simulation/types/Colour.hpp"
#include "openvic-simulation/types/HasIdentifier.hpp"
#include "openvic-simulation/types/IdentifierRegistry.hpp"
namespace OpenVic {
struct MapmodeManager;
struct Map;
struct ProvinceInstance;
struct Mapmode : HasIdentifier {
friend struct MapmodeManager;
/* Bottom 32 bits are the base colour, top 32 are the stripe colour, both in ARGB format with the alpha channels
* controlling interpolation with the terrain colour (0 = all terrain, 255 = all corresponding RGB) */
struct base_stripe_t {
colour_argb_t base_colour;
colour_argb_t stripe_colour;
constexpr base_stripe_t(colour_argb_t base, colour_argb_t stripe)
: base_colour { base }, stripe_colour { stripe } {}
constexpr base_stripe_t(colour_argb_t both) : base_stripe_t { both, both } {}
};
using colour_func_t = std::function<base_stripe_t(Map const&, ProvinceInstance const&)>;
using index_t = size_t;
private:
const index_t PROPERTY(index);
const colour_func_t colour_func;
Mapmode(std::string_view new_identifier, index_t new_index, colour_func_t new_colour_func);
public:
static const Mapmode ERROR_MAPMODE;
Mapmode(Mapmode&&) = default;
base_stripe_t get_base_stripe_colours(Map const& map, ProvinceInstance const& province) const;
};
struct MapmodeManager {
private:
IdentifierRegistry<Mapmode> IDENTIFIER_REGISTRY(mapmode);
public:
MapmodeManager() = default;
bool add_mapmode(std::string_view identifier, Mapmode::colour_func_t colour_func);
/* The mapmode colour image contains of a list of base colours and stripe colours. Each colour is four bytes
* in RGBA format, with the alpha value being used to interpolate with the terrain colour, so A = 0 is fully terrain
* and A = 255 is fully the RGB colour packaged with A. The base and stripe colours for each province are packed
* together adjacently, so each province's entry is 8 bytes long. The list contains ProvinceDefinition::MAX_INDEX + 1
* entries, that is the maximum allowed number of provinces plus one for the index-zero "null province". */
bool generate_mapmode_colours(Map const& map, Mapmode::index_t index, uint8_t* target) const;
bool setup_mapmodes();
};
}
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