LCOM1920-T5G03

#include <lcom/lcf.h>

#include "proj_func.h"

#include "interrupts_func.h"

#include "graph.h"

#include "keyboard.h"

#include "errors.h"

#include "proj_macros.h"

#include "utils.h"

#include "ent.h"

#include "fast_math.h"

#include "kbc_macros.h"

#include <math.h>

int cleanup(void) {

    int r = SUCCESS;

    if ((r = unsubscribe_all()))

        printf("%s: failed to unsubscribe drivers.\n", __func__);

    if ((r = graph_cleanup()))

        printf("%s: graph cleanup failed\n", __func__);

    return r;

}

static keys_t key_presses;

void update_key_presses(void) {

    if (sz == 1) {

        switch(scancode[0]) {

        case W_MAKE_CODE        : key_presses.w_pressed     = 1;        break;

        case W_BREAK_CODE       : key_presses.w_pressed     = 0;        break;

        case A_MAKE_CODE        : key_presses.a_pressed     = 1;        break;

        case A_BREAK_CODE       : key_presses.a_pressed     = 0;        break;

        case S_MAKE_CODE        : key_presses.s_pressed     = 1;        break;

        case S_BREAK_CODE       : key_presses.s_pressed     = 0;        break;

        case D_MAKE_CODE        : key_presses.d_pressed     = 1;        break;

        case D_BREAK_CODE       : key_presses.d_pressed     = 0;        break;

        case CTRL_MAKE_CODE     : key_presses.ctrl_pressed  = 1;        break;

        case CTRL_BREAK_CODE    : key_presses.ctrl_pressed  = 0;        break;

        case PLUS_MAKE_CODE     : key_presses.plus_pressed  = 1;        break;

        case PLUS_BREAK_CODE    : key_presses.plus_pressed  = 0;        break;

        case MINUS_MAKE_CODE    : key_presses.minus_pressed = 1;        break;

        case MINUS_BREAK_CODE   : key_presses.minus_pressed = 0;        break;

        }

    }

}

void update_movement(const map_t *map, gunner_t *p, keys_t *keys, list_t *shooter_list) {

    int ver_mov = keys->s_pressed - keys->w_pressed;

    int hor_mov = keys->d_pressed - keys->a_pressed;

    double x = gunner_get_x(p);

    double y = gunner_get_y(p);

    gunner_set_pos(p, x + SHOOTER_SPEED * hor_mov, y);

    if (map_collides_gunner(map, p)) gunner_set_pos(p, x, y);

    else {

        list_node_t *it = list_begin(shooter_list);

        while (it != list_end(shooter_list)) {

            gunner_t *p2 = *(gunner_t**)list_node_val(it);

            if (p != p2 && gunner_collides_gunner(p, p2)) {

                gunner_set_pos(p, x, y);

                break;

            }

            it = list_node_next(it);

        }

    }

    x = gunner_get_x(p);

    gunner_set_pos(p, x, y + SHOOTER_SPEED * ver_mov);

    if (map_collides_gunner(map, p)) gunner_set_pos(p, x, y);

    else {

        list_node_t *it = list_begin(shooter_list);

        while (it != list_end(shooter_list)) {

            gunner_t *p2 = *(gunner_t**)list_node_val(it);

            if (p != p2 && gunner_collides_gunner(p, p2)) {

                gunner_set_pos(p, x, y);

                break;

            }

            it = list_node_next(it);

        }

    }

}

void (shoot_bullet)(const gunner_t *shooter, list_t *bullet_list, const basic_sprite_t *bsp_bullet) {

    double angle = gunner_get_angle(shooter);

    double vx = -BULLET_SPEED * fm_sin(angle);

    double vy = -BULLET_SPEED * fm_cos(angle);

    bullet_t *bullet = bullet_ctor(shooter, bsp_bullet, gunner_get_x(shooter), gunner_get_y(shooter), vx, vy);

    list_insert(bullet_list, list_end(bullet_list), bullet);

}

void (update_game_state)(const map_t *map, list_t *shooter_list, list_t *bullet_list) {

    bullet_update_movement_list(bullet_list);

    list_node_t *bullet_it = list_begin(bullet_list);

    while (bullet_it != list_end(bullet_list)) {

        /// Collision with walls

        bullet_t *bullet = *(bullet_t**)list_node_val(bullet_it);

        if (map_collides_bullet(map, bullet)) {

            list_node_t *aux = list_node_next(bullet_it);

            /// Delete bullet

            bullet_dtor(list_erase(bullet_list, bullet_it));

            /// Advance iterator

            bullet_it = aux;

            continue;

        }

        /// Collision with shooters

        list_node_t *shooter_it = list_begin(shooter_list);

        int deleted_bullet = false;

        while(shooter_it != list_end(shooter_list)){

            gunner_t *shooter = *(gunner_t**)list_node_val(shooter_it);

            if(gunner_collides_bullet(shooter, bullet)) {

                list_node_t *aux = list_node_next(bullet_it);

                /// Change health

                gunner_set_curr_health(shooter, gunner_get_curr_health(shooter) - bullet_get_damage(bullet));

                if (gunner_get_curr_health(shooter) <= 0) {

                    gunner_set_curr_health(shooter, gunner_get_health(shooter));

                    get_random_spawn(map, shooter);

                }

                /// Delete bullet

                bullet_dtor(list_erase(bullet_list, bullet_it)); deleted_bullet = true;

                /// Advance iterator

                bullet_it = aux;

                break;

            } else shooter_it = list_node_next(shooter_it);

        }

        if(deleted_bullet) continue;

        /// Advance iterator if necessary

        bullet_it = list_node_next(bullet_it);

    }

}

void (get_random_spawn)(const map_t *map, gunner_t *p) {

    uint16_t w = map_get_width(map), h = map_get_height(map);

    double x, y;

    do {

        x = rand() % w;

        y = rand() % h;

        gunner_set_pos(p, x, y);

    } while (map_collides_gunner(map, p));

}

void update_scale(void) {

    static uint8_t last_plus = 0, last_minus = 0;

    if (key_presses.ctrl_pressed) {

        if (key_presses.plus_pressed && !last_plus) {

            double scale = ent_get_scale();

            scale *= 1.1;

            if (scale <= MAX_SCALE) ent_set_scale(scale);

        }

        else if (key_presses.minus_pressed && !last_minus) {

            double scale = ent_get_scale();

            scale /= 1.1;

            if (scale >= MIN_SCALE) ent_set_scale(scale);

        }

        //printf("SCALE: %d\n", (int)(ent_get_scale()*1000));

    }

    last_plus = key_presses.plus_pressed;

    last_minus = key_presses.minus_pressed;

}

static int32_t mouse_x = 0, mouse_y = 0;

void (update_mouse)(struct packet *p) {

    mouse_x = max(0, mouse_x + p->delta_x);

    mouse_x = min(mouse_x, graph_get_XRes() - 1);

    mouse_y = max(0, mouse_y - p->delta_y);

    mouse_y = min(mouse_y, graph_get_YRes() - 1);

    key_presses.lb_pressed = p->lb;

}

keys_t* (get_key_presses)(void) {

    return &key_presses;

}

int32_t get_mouse_X(void) { return mouse_x; }

int32_t get_mouse_Y(void) { return mouse_y; }

double get_mouse_angle(gunner_t *p) {

    return atan2(gunner_get_y_screen(p) - mouse_y, mouse_x - gunner_get_x_screen(p));

}