#pragma once

#include "pxl8_dither.h"
#include "pxl8_types.h"

#ifdef __cplusplus
extern "C" {
#endif

#define PXL8_LIGHT_LEVELS 64
#define PXL8_COLORMAP_SIZE (256 * PXL8_LIGHT_LEVELS)

#define PXL8_FULLBRIGHT_START 240
#define PXL8_TRANSPARENT 0
#define PXL8_DYNAMIC_RANGE_START 144
#define PXL8_DYNAMIC_RANGE_COUNT 16

typedef struct {
    u8 table[PXL8_COLORMAP_SIZE];
} pxl8_colormap;

typedef struct {
    u8 dark_r, dark_g, dark_b;
    u8 tint_r, tint_g, tint_b;
    f32 tint_strength;
} pxl8_level_tint;

void pxl8_colormap_generate(pxl8_colormap* cm, const u32* palette, const pxl8_level_tint* tint);

static inline u8 pxl8_colormap_lookup(const pxl8_colormap* cm, u8 pal_idx, u8 light) {
    u32 light_idx = light >> 2;
    return cm->table[light_idx * 256 + pal_idx];
}

static inline u8 pxl8_colormap_lookup_dithered(const pxl8_colormap* cm, u8 pal_idx, u8 light, u32 x, u32 y) {
    u8 dithered = pxl8_dither_light(light, x, y);
    u32 light_idx = dithered >> 2;
    return cm->table[light_idx * 256 + pal_idx];
}

#ifdef __cplusplus
}
#endif