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#include "enemy.h"
#include <stdlib.h>
animation_player_t get_enemy_animation(enum enemy_type type){
switch (type){
case TEST_ENEMY:
return make_animation_player(&textures[T_PLAYER], 12, 8, 40, 64, 8, 0);
case SKELETON:
return make_animation_player(&textures[T_SKELETON_MOVE], 1, 10, 0, 10, 1, 0);
default:
fprintf(stderr, "get_enemy_animation() error");
return (animation_player_t){};
}
}
/* Vector2 get_enemy_size(enum enemy_type type){ */
/* switch(type){ */
/* case TEST_ENEMY: */
/* return (Vector2){ 13, 18 }; */
/* case SKELETON: */
/* return (Vector2){ 12, 17 }; */
/* default: */
/* return (Vector2){ 0, 0 }; */
/* } */
/* } */
Rectangle get_enemy_hitbox(enum enemy_type type){
switch(type){
case TEST_ENEMY:
return (Rectangle){ 1, 5, 13, 18 };
case SKELETON:
return (Rectangle){ 7, 12, 12, 17 };
default:
return (Rectangle){0};
}
}
void flip_enemy_y_axis(enemy_t *e){
if (e->direction.x < 0){
e->animation.frame_rec.width = -abs(e->animation.frame_rec.width);
e->hitbox.x = e->position.x + e->animation.frame_width - e->hb_offset.x - e->hitbox.width;
} else {
e->animation.frame_rec.width = abs(e->animation.frame_rec.width);
e->hitbox.x = e->position.x + e->hb_offset.x;
}
}
enemy_t make_enemy(enum enemy_type type, int max_health, int x, int y, int speed){
animation_player_t enemy_anim = get_enemy_animation(type);
Rectangle hitbox = get_enemy_hitbox(type);
Vector2 offset = (Vector2){ hitbox.x, hitbox.y };
hitbox.x += x;
hitbox.y += y;
return (enemy_t) {
.animation = enemy_anim,
.type = type,
.health = max_health,
.health_max = max_health,
.position = (Vector2){ x, y },
.hitbox = hitbox,
.hb_offset = offset,
/* .size = get_enemy_size(type), */
/* .center = (Vector2){ x + enemy_anim.frame_width / 2, y + enemy_anim.frame_height / 2}, */
.speed = speed,
.active = 1
};
}
void move_enemy(enemy_t* e, float dt){
float x_move = e->direction.x * e->speed * dt;
float y_move = e->direction.y * e->speed * dt;
e->position.x += x_move;
e->position.y += y_move;
e->hitbox.x += x_move;
e->hitbox.y += y_move;
/* e->center.x = e->position.x + e->size.x / 2; */
/* e->center.y = e->position.y + e->size.y / 2; */
}
void update_enemy_basic(enemy_t *e, Vector2 target, float dt){
float old = e->direction.x;
e->direction = normalize_vector(vector_diff(target, e->position));
if (signbit(old) != signbit(e->direction.x)){
flip_enemy_y_axis(e);
}
}
void update_test_enemy(enemy_t *e, Vector2 target, float dt){
e->direction = normalize_vector(vector_diff(target, e->position));
int new_offset = get_dir(floorf(e->direction.x + 1) + 3 * floorf(e->direction.y + 1));
if (new_offset != e->animation.index_offset){
animation_player_t *anim = &e->animation;
anim->index_offset = new_offset;
anim->frame_current = anim->index_start + anim->index_offset;
}
}
void update_enemy(enemy_t *e, Vector2 target, float dt){
update_frame(&e->animation);
switch (e->type){
case TEST_ENEMY:
update_test_enemy(e, target, dt);
break;
case SKELETON:
update_enemy_basic(e, target, dt);
break;
default:
break;
}
if (distance(target, e->position) > 1.0f){
move_enemy(e, dt);
}
}
/* animation_player_t *anim = &enemy->animation; */
/* DrawTextureRec(*anim->sheet, anim->frame_rec, enemy->position, WHITE); */
void draw_enemy(enemy_t *enemy){
draw_frame(&enemy->animation, enemy->position, WHITE);
DrawRectangleLinesEx(enemy->hitbox, 1, LIGHTGRAY);
Rectangle hb = enemy->hitbox;
Rectangle health_box = { hb.x, hb.y + hb.height + 5, hb.width, 5};
float per_health_width = health_box.width / enemy->health_max;
DrawRectangleLinesEx(health_box, 1, BLACK);
DrawRectangleRec((Rectangle){health_box.x, health_box.y, per_health_width * enemy->health, 5}, RED);
/* animation_player_t *anim = &enemy->animation; */
/* Vector2 pos = enemy->position; */
/* DrawRectangleLines(pos.x, pos.y, anim->frame_width, anim->frame_height, SKYBLUE); */
draw_frame_box(&enemy->animation, enemy->position);
}
/* Vector2 p = enemy->position; */
/* Vector2 s = enemy->size; */
/* Vector2 pos = (Vector2) {p.x, p.y + s.y + 5}; */
/* Rectangle rec = (Rectangle) { pos.x, pos.y, s.x, 5 }; */
/* float box_width = s.x / enemy->health_max; */
/* /\* box_width * enemy->health *\/ */
/* DrawRectangleLinesEx(rec, 1, BLACK); */
/* DrawRectangleV(pos, (Vector2){box_width * enemy->health, 5}, RED); */
/* /\* DrawRectangleLinesEx((Rectangle){ p.x, p.y, s.x, s.y }, 2, LIGHTGRAY); *\/ */
/* /\* DrawRectangleV(enemy->position, enemy->size, LIGHTGRAY); *\/ */
enemy_t spawn_enemy(enemy_spawner_t* spawner){
Rectangle *s = &spawner->border;
int x = s->x, y = s->y;
if (rand() % 2){
x += rand() % 2 ? 0 : s->width;
y += rand() % (int)s->height;
} else {
x += rand() % (int)s->width;
y += rand() % 2 ? 0 : s->height;
}
start_cooldown(spawner);
return make_enemy(rand() % ENEMY_TYPE_COUNT, 3, x, y, 40);
}
void update_spawner(enemy_spawner_t* spawner, float dt){
spawner->cooldown -= dt;
}
void start_cooldown(enemy_spawner_t* spawner){
spawner->cooldown = spawner->cooldown_max;
}
bool can_spawn(const enemy_spawner_t* spawner){
return spawner->cooldown <= 0;
}
/* animation_player_t enemy_anim = { */
/* .sheet = texture, */
/* .frame_counter = 0, */
/* .frame_speed = 5, */
/* .frame_width = texture->width / 8.0, */
/* .frame_height = texture->height / 12.0, */
/* .index_start = 40, */
/* .index_end = 64, */
/* .index_increment = 8, */
/* .index_offset = 0 */
/* }; */
/* enemy_anim.frame_current = enemy_anim.index_start; */
/* enemy_anim.frame_rec = (Rectangle){ 0, 0, enemy_anim.frame_width, enemy_anim.frame_height}; */
/* enemy_t make_test_enemy(Texture2D *texture, int max_health, int x, int y, int speed){ */
/* /\* animation_player_t enemy_anim = make_animation_player(texture, 12, 8, 40, 64, 8, 0); *\/ */
/* animation_player_t enemy_anim = get_enemy_animation(TEST_ENEMY); */
/* return (enemy_t) { */
/* .animation = enemy_anim, */
/* .type = TEST_ENEMY, */
/* .health = max_health, */
/* .health_max = max_health, */
/* .position = (Vector2){ x, y }, */
/* .size = (Vector2){ enemy_anim.frame_width, enemy_anim.frame_height }, */
/* .center = (Vector2){ x + enemy_anim.frame_width / 2, y + enemy_anim.frame_height / 2}, */
/* .speed = speed */
/* }; */
/* } */
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