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#ifndef SNOWFLAKE_H
#define SNOWFLAKE_H
#include "../types.h"
#include "../mathlib.h"
#include "../list.h"
#include "windfield.hpp"
struct Renderer2d;
struct Vertex2D;
struct SnowflakeLoadParameters {
i32 numSnowflakes = 480;
f32 windIntervalSeconds = 1.5f;
};
struct SnowflakeInstanceData {
Vector2 position;
f32 rotation;
f32 scale;
f32 seed;
};
struct SnowflakeUpdateData {
Vector2 velocity;
Vector2 position;
f32 rotateVelocity = 0.f;
f32 rotation = 0;
f32 scale;
f32 seed;
};
struct SnowflakeParticleRenderer {
f32 xMax = 0;
f32 yMax = 0;
f32 windIntervalSeconds = 1.5;
i32 numSnowflakes = 0;
f32 timeUntilNextWindSeconds = 0;
WindField<100, 100, 10> wind;
SnowflakeUpdateData* updateData;
u32 vao;
u32 quadVbo; // Base quad geometry
u32 instanceVbo; // Instance data (position, rotation, scale, seed)
u32 shader; // Custom snowflake shader
Mat4x4 model;
struct {
i32 position;
i32 instancePos;
i32 instanceRot;
i32 instanceScale;
i32 instanceSeed;
} attributes;
struct {
i32 projection;
i32 model;
} uniforms;
void load(SnowflakeLoadParameters params, Renderer2d* renderer);
void update(f32 dtSeconds);
void render(Renderer2d* renderer);
void unload();
};
#endif
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