diff options
Diffstat (limited to 'bullets.c')
| -rw-r--r-- | bullets.c | 65 |
1 files changed, 46 insertions, 19 deletions
@@ -26,7 +26,7 @@ void shoot(platform_window* window) { } } -bool check_if_bullet_collided_with_section(bullet* b, float* dist_of_closest_intersect, vec2f bstart, vec2f bend, vec2f l1, vec2f l2) { +bool check_if_bullet_collided_with_section(float* dist_of_closest_intersect, vec2f bstart, vec2f bend, vec2f l1, vec2f l2, vec2f* intersect_point_buf) { if (lines_intersect(bstart, bend, l1, l2)) { vec2f intersect_point = get_intersection_point(bstart, bend, l1, l2); @@ -38,9 +38,7 @@ bool check_if_bullet_collided_with_section(bullet* b, float* dist_of_closest_int return false; } *dist_of_closest_intersect = length_of_shot; - - b->endy = intersect_point.y; - b->endx = intersect_point.x; + *intersect_point_buf = intersect_point; return true; } return false; @@ -61,18 +59,24 @@ bool check_if_bullet_collided_with_object(bullet* b, platform_window* window) { if (!o.active) continue; if (b->position.z <= o.h + o.size.z && b->position.z >= o.h) { box obj_box = get_box_of_square(window, (vec3f){o.position.x, o.position.y, o.h}, o.size); - if (check_if_bullet_collided_with_section(b, &dist_of_closest_intersect, bstart, bend, obj_box.bl_b, obj_box.br_b)) { + vec2f intersect_point; + if (check_if_bullet_collided_with_section(&dist_of_closest_intersect, bstart, bend, obj_box.bl_b, obj_box.br_b, &intersect_point)) { result = true; } - if (check_if_bullet_collided_with_section(b, &dist_of_closest_intersect, bstart, bend, obj_box.tl_b, obj_box.tr_b)) { + if (check_if_bullet_collided_with_section(&dist_of_closest_intersect, bstart, bend, obj_box.tl_b, obj_box.tr_b, &intersect_point)) { result = true; } - if (check_if_bullet_collided_with_section(b, &dist_of_closest_intersect, bstart, bend, obj_box.tl_b, obj_box.bl_b)) { + if (check_if_bullet_collided_with_section(&dist_of_closest_intersect, bstart, bend, obj_box.tl_b, obj_box.bl_b, &intersect_point)) { result = true; } - if (check_if_bullet_collided_with_section(b, &dist_of_closest_intersect, bstart, bend, obj_box.tr_b, obj_box.br_b)) { + if (check_if_bullet_collided_with_section(&dist_of_closest_intersect, bstart, bend, obj_box.tr_b, obj_box.br_b, &intersect_point)) { result = true; } + + if (result) { + b->endy = intersect_point.y; + b->endx = intersect_point.x; + } } } @@ -83,6 +87,10 @@ bool check_if_bullet_collided_with_zombie(bullet b, platform_window* window, boo map_info info = get_map_info(window); float size = get_bullet_size_in_tile(window); + bool result = false; + float dist_of_closest_intersect = __FLT_MAX__; + int index_of_closest_zombie = -1; + for (int i = 0; i < max_zombies; i++) { zombie o = zombies[i]; if (!o.alive) continue; @@ -91,20 +99,38 @@ bool check_if_bullet_collided_with_zombie(bullet b, platform_window* window, boo vec2f bend = (vec2f){b.endx, b.endy}; if (b.position.z <= o.position.z + o.size.z && b.position.z >= o.position.z) { - if (lines_intersect(bstart, bend, (vec2f){o.position.x, o.position.y+o.size.y}, (vec2f){o.position.x+o.size.x, o.position.y+o.size.y}) || // bottom - lines_intersect(bstart, bend, (vec2f){o.position.x, o.position.y}, (vec2f){o.position.x+o.size.x, o.position.y}) || // top - lines_intersect(bstart, bend, (vec2f){o.position.x, o.position.y}, (vec2f){o.position.x, o.position.y+o.size.y}) || // left - lines_intersect(bstart, bend, (vec2f){o.position.x+o.size.x, o.position.y}, (vec2f){o.position.x+o.size.x, o.position.y+o.size.y})) // right - { - if (kill_if_collided) { - zombies[i].alive = false; - } - return true; - } + vec2f intersect_point; + box obj_box = get_box_of_square(window, (vec3f){o.position.x, o.position.y, o.position.z}, o.size); + bool this_zombie_collided = false; + if (check_if_bullet_collided_with_section(&dist_of_closest_intersect, bstart, bend, obj_box.bl_b, obj_box.br_b, &intersect_point)) { + this_zombie_collided = true; + index_of_closest_zombie = i; + } + if (check_if_bullet_collided_with_section(&dist_of_closest_intersect, bstart, bend, obj_box.tl_b, obj_box.tr_b, &intersect_point)) { + this_zombie_collided = true; + index_of_closest_zombie = i; + } + if (check_if_bullet_collided_with_section(&dist_of_closest_intersect, bstart, bend, obj_box.tl_b, obj_box.bl_b, &intersect_point)) { + this_zombie_collided = true; + index_of_closest_zombie = i; + } + if (check_if_bullet_collided_with_section(&dist_of_closest_intersect, bstart, bend, obj_box.tr_b, obj_box.br_b, &intersect_point)) { + this_zombie_collided = true; + index_of_closest_zombie = i; + } + + if (this_zombie_collided) { + result = true; + } } } - return false; + if (kill_if_collided && result) { + zombies[index_of_closest_zombie].alive = false; + return result; + } + + return result; } void draw_bullets(platform_window* window) { @@ -131,6 +157,7 @@ void draw_bullets(platform_window* window) { if (check_if_bullet_collided_with_object(&b, window)) { bullets[i].endy = b.endy; bullets[i].endx = b.endx; + b = bullets[i]; } if (check_if_bullet_collided_with_zombie(b, window, true)) { |