LCOM1920-T5G03

#include "sprite.h"

void (gunner_set_pos)  (gunner_t *p, double x, double y){ p->x = x; p->y = y; }

void (gunner_set_angle)(gunner_t *p, double angle      ){

void (bullet_set_pos)  (bullet_t *p, double x, double y){ p->x = x; p->y = y; }

void (bullet_set_angle)(bullet_t *p, double angle      ){ sprite_set_angle(p->b, angle); }

struct map{

    basic_sprite_t *bsp_background;

    sprite_t *background;

    uint8_t *collide;

};

map_t* (map_ctor)(const char **background, const char **collide){

    map_t *ret = malloc(sizeof(map_t));

    if(ret == NULL) return NULL;

    ret->bsp_background = NULL;

    ret->background     = NULL;

    ret->collide        = NULL;

    ret->bsp_background = basic_sprite_ctor(background, 0, 0);

    ret->background     = sprite_ctor(ret->bsp_background);

    if(ret->bsp_background == NULL ||

        ret->background     == NULL){ map_dtor(ret); return NULL; }

    basic_sprite_t *bsp_collide = basic_sprite_ctor(collide, 0, 0);

    if(bsp_collide == NULL){ map_dtor(ret); return NULL; }

    const uint16_t W = basic_sprite_get_w(bsp_collide);

    const uint16_t H = basic_sprite_get_h(bsp_collide);

    ret->collide = malloc(W*H*sizeof(uint8_t));

    if(ret->collide == NULL){ map_dtor(ret); return NULL; }

    const uint8_t *m = basic_sprite_get_map(bsp_collide);

    for(unsigned i = 0; i < W*H; ++i){

        ret->collide[i] = (m[4*i+3] < ALPHA_THRESHOLD ? 1 : 0);

    }

    basic_sprite_dtor(bsp_collide);

    return ret;

}

void (map_dtor)(map_t *p){

    if(p == NULL) return;

    sprite_dtor(p->background);

    basic_sprite_dtor(p->bsp_background);

    free(p->collide);

    free(p);

}

int16_t (map_get_x_screen)(const map_t *p){ return (-x_origin)*scale; }

int16_t (map_get_y_screen)(const map_t *p){ return (-y_origin)*scale; }

int (map_collides)(const map_t *p, double x, double y){

    const uint16_t w = sprite_get_w(p->background), h = sprite_get_h(p->background);

    int16_t x_ = x, y_ = y;

    if(x_ < 0 || w <= x_ || y_ < 0 || h <= y_) return 0;

    uint32_t pos = x_ + y_*w;

    return p->collide[pos];

}

void   (map_draw)(map_t *p){

    const int16_t x_screen = map_get_x_screen(p);

    const int16_t y_screen = map_get_y_screen(p);

    sprite_set_pos  (p->background, x_screen, y_screen);

    sprite_set_scale(p->background, scale);

    sprite_draw     (p->background);

}