#include "particles.h"

#include <gint/display.h>
#include <stdio.h>

static bool damage_update(particle_damage_t *p, GUNUSED fixed_t dt)
{
    return p->particle.age >= 500;
}

static void damage_render(int x, int y, particle_damage_t *p)
{
    extern bopti_image_t img_font_damage_white;
    extern bopti_image_t img_font_damage_red;

    bopti_image_t *img = (p->color == C_RED) ? &img_font_damage_red :
        &img_font_damage_white;

    int char_w = img->width / 10;
    int char_h = img->height;

    /* Determine number of characters */
    char str[16];
    int n = snprintf(str, 16, "%d", p->damage);

    y -= char_h / 2;
    x -= (char_w * n + 1) / 2;

    for(int i = 0; i < n; i++) {
        int offset = (char_w + 1) * (str[i] - '0');
        dsubimage(x, y, img, offset, 0, char_w, char_h, DIMAGE_NONE);
        x += char_w;
    }
}

static bool dash_update(particle_dash_t *p, GUNUSED fixed_t dt)
{
    return p->particle.age >= 500;
}

static void dash_render(int x, int y, particle_dash_t *p)
{
    if(!p->frame) return;
    anim_frame_render(x, y, p->frame);
}

//---
// Generic functions
//---

bool particle_update(particle_t *p, fixed_t dt)
{
    p->age += fround(dt * 1000);

    if(p->type == PARTICLE_DAMAGE)
        return damage_update((void *)p, dt);
    if(p->type == PARTICLE_DASH)
        return dash_update((void *)p, dt);

    return true;
}

void particle_render(int x, int y, particle_t const *p)
{
    if(p->type == PARTICLE_DAMAGE)
        return damage_render(x, y, (void *)p);
    if(p->type == PARTICLE_DASH)
        return dash_render(x, y, (void *)p);
}