mirror of https://git.sr.ht/~kikoodx/momento
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later */
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/* Copyright (C) 2021 KikooDX */
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#include "particles.h"
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#include <libimg.h>
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extern struct Particle particles[MAX_PARTICLES];
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void
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particles_draw(void)
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{
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int i = MAX_PARTICLES;
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while (i-- > 0)
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particle_draw(particles[i]);
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}
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void
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particle_draw(struct Particle particle)
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{
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if (!particle.life)
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return;
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/* create image to apply transformations on */
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/* alloc */
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const img_t transformed_img =
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img_create(particle.frame_width, particle.frame_height);
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/* check */
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if (img_null(transformed_img))
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return;
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/* fill image with transparent */
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img_fill(transformed_img, IMG_ALPHA);
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/* get frame subimage */
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const img_t frame_simg =
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img_sub(*particle.texture, particle.frame * particle.frame_width, 0,
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particle.frame_width, particle.frame_height);
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/* apply transformations if needed */
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if (particle.flip_h)
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img_hflip(frame_simg, transformed_img);
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else
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img_render(frame_simg, transformed_img);
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/* render image */
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img_render_vram(transformed_img, particle.x, particle.y);
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/* free */
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img_destroy(transformed_img);
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}
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