LCOM1920-T5G03

#include <lcom/lcf.h>

#include "ent.h"

#include "graph.h"

static double scale = 1.0;

static int16_t x_origin = 0;

static int16_t y_origin = 0;

void (ent_set_scale) (double n){ scale = n; }

void (ent_set_origin)(double x, double y){ x_origin = x; y_origin = y; }

double (ent_get_scale)  (void){ return scale; }

double (ent_get_XLength)(void){ return graph_get_XRes()/scale; }

double (ent_get_YLength)(void){ return graph_get_YRes()/scale; }

struct ent{

    double x, y; //real position in meters

    sprite_t *dude;

    sprite_t *weapon;

};

ent_t* (ent_ctor)(basic_sprite_t *dude, basic_sprite_t *weapon){

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

    if(ret == NULL) return NULL;

    ret->x = 0.0;

    ret->y = 0.0;

    ret->dude   = sprite_ctor(dude  );

    ret->weapon = sprite_ctor(weapon);

    if(ret->dude == NULL || ret->weapon == NULL){

        ent_dtor(ret);

        return NULL;

    } else return ret;

}

void (ent_dtor)(ent_t *p){

    if(p == NULL) return;

    sprite_dtor(p->dude);

    sprite_dtor(p->weapon);

    free(p);

}

void (ent_set_pos)  (ent_t *p, int16_t x, int16_t y){ p->x = x; p->y = y; }

void (ent_set_angle)(ent_t *p, double angle        ){

    sprite_set_angle(p->dude  , angle);

    sprite_set_angle(p->weapon, angle);

}

double  (ent_get_x)       (const ent_t *p){ return p->x; }

double  (ent_get_y)       (const ent_t *p){ return p->y; }

int16_t (ent_get_x_screen)(const ent_t *p){ return (p->x-x_origin)*scale; }

int16_t (ent_get_y_screen)(const ent_t *p){ return (p->y-y_origin)*scale; }

void (ent_draw)(ent_t *p){

    const int16_t x_screen = ent_get_x_screen(p);

    const int16_t y_screen = ent_get_y_screen(p);

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

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

    sprite_set_scale(p->dude  , scale);

    sprite_set_scale(p->weapon, scale);

    sprite_draw     (p->weapon);

    sprite_draw     (p->dude  );

}