#include "twn_draw.h"
#include "twn_draw_c.h"

#include <stb_ds.h>

#include <stdbool.h>

static float start_cache, end_cache, density_cache;
static Color color_cache;
static bool fog_used = false;


void draw_fog(float start, float end, float density, Color color) {
    start_cache = start;
    end_cache = end;
    density_cache = density;
    color_cache = color;
    fog_used = true;
}


void apply_fog(void) {
    if (!fog_used)
        return;

    DeferredCommand command = {
        .type = DEFERRED_COMMAND_TYPE_APPLY_FOG,
        .apply_fog = (DeferredCommandApplyFog){
            .start = start_cache,
            .end = end_cache,
            .density = density_cache,
            .color = color_cache
        }
    };

    arrpush(deferred_commands, command);
}


void pop_fog(void) {
    if (!fog_used)
        return;

    DeferredCommand command = {
        .type = DEFERRED_COMMAND_TYPE_POP_FOG,
    };

    arrpush(deferred_commands, command);
}