103 lines
1.9 KiB
C
103 lines
1.9 KiB
C
#include "bullet.h"
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#include "conf.h"
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#include "level.h"
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#include <gint/display.h>
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#include <stdlib.h>
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#include <string.h>
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static struct Bullet_table bullet_table;
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static void bullet_table_free(void);
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static void bullet_update(struct Bullet *bullet);
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static void bullet_draw(struct Bullet *bullet, int timer);
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extern bopti_image_t img_bullet;
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void
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bullet_table_init(void)
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{
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bullet_table_free();
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bullet_table.bullets = malloc(MAX_BULLETS * sizeof(struct Bullet));
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bullet_table.n = 0;
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for (int i = 0; i < MAX_BULLETS; ++i) {
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bullet_table.bullets[i].active = 0;
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}
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}
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void
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bullet_table_free(void)
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{
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if (bullet_table.bullets != NULL) {
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bullet_table.bullets = NULL;
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}
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};
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void
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bullet_fire(int x, int y, int v)
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{
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for (int i = 0; i < MAX_BULLETS; ++i) {
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if (!bullet_table.bullets[i].active) {
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bullet_table.bullets[i] = (struct Bullet){
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.pos = (struct Vec2){.x = x, .y = y},
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.v = v,
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.active = 1};
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break;
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}
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}
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++bullet_table.n;
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}
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void
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bullet_table_update(void)
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{
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for (int i = 0; i < MAX_BULLETS; ++i) {
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if (bullet_table.bullets[i].active) {
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bullet_update(&bullet_table.bullets[i]);
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}
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}
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}
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void
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bullet_update(struct Bullet *bullet)
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{
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bullet->pos.x += bullet->v;
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/* boom */
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const struct Vec2 level_dim = level_get_dim();
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if (bullet->pos.x < -6 || bullet->pos.x > level_dim.x * TILE_S ||
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bullet->pos.y < -6 || bullet->pos.y > level_dim.y * TILE_S) {
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bullet_destroy(bullet);
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}
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}
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void
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bullet_table_draw(int timer)
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{
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for (int i = 0; i < MAX_BULLETS; ++i) {
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if (bullet_table.bullets[i].active) {
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bullet_draw(&bullet_table.bullets[i], timer);
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}
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}
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}
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void
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bullet_draw(struct Bullet *bullet, int timer)
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{
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dsubimage(bullet->pos.x, bullet->pos.y, &img_bullet,
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(timer / 2) % 2 * 6, 0, 6, 4, 0);
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}
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void
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bullet_destroy(struct Bullet *bullet)
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{
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bullet->active = 0;
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--bullet_table.n;
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}
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int
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bullet_nb(void)
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{
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return bullet_table.n;
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}
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