52 lines
945 B
C
52 lines
945 B
C
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#pragma once
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#include <vector>
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#include <list>
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#include <cstdint>
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#include <random>
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namespace Background
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{
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class Particles
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{
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public:
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double rate = 0.5;
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enum Mode
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{
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Stars,
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Snow,
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Invalid
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};
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struct Particle
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{
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double x, y, dx, dy;
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unsigned int intensity;
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};
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Particles(enum Mode = Stars);
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~Particles();
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void advance();
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void copyto(uint16_t *dst, int pitch);
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enum Mode getmode();
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void setmode(enum Mode);
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void set_game_image(uint16_t *src, int pitch);
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std::vector<uint16_t> output;
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private:
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inline void setpixel(int x, int y, uint16_t l);
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void advance_snow();
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void advance_starfield();
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std::minstd_rand mt;
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std::uniform_real_distribution<double> dis;
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std::vector<uint16_t> gameimage;
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std::list<Particle> particles;
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enum Mode mode;
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double wind;
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uint16_t color_table[32];
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};
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} // namespace Background
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