hound

#include "../../main.h"


namespace a
{

	vector get_hitbox_pos(c_baseentity* target, int id)
	{

		matrix3x4_t matrix[MAXSTUDIOBONES];

		if (target->setup_bones(matrix, MAXSTUDIOBONES, BONE_USED_BY_HITBOX, i::globals->curtime)) {

			if (target->get_model() != nullptr) {

				studiohdr_t* hdr = i::modelinfo->get_studio_model(target->get_model());

				if (hdr != nullptr) {

					mstudiohitboxset_t* set		= hdr->get_hitbox_set(0);
					mstudiobbox_t*		hitbox	= set->get_hitbox(id);

					if (hitbox) {

						vector min, max, center;

						u::vector_transform(hitbox->bbmin, matrix[hitbox->bone], min);
						u::vector_transform(hitbox->bbmax, matrix[hitbox->bone], max);

						center = (min + max) * 0.5;

						return center;

					}

				}

			}

		}

		return vector(0, 0, 0);

	}

	bool is_visible(c_baseentity* ent, vector start, vector end)
	{

		trace_t			trace;
		ray_t			ray;
		trace_filter	filter(g::local);

		ray.init(start, end);

		i::enginetrace->trace_ray(ray, MASK_SHOT, &filter, &trace);

		return (trace.ent == ent || trace.fraction >= 0.99f);

	}

	bool is_visible_length(c_baseentity* ent, vector start, vector end)
	{

		trace_t			trace;
		ray_t			ray;
		trace_filter	filter(g::local);

		vector start_pos, end_bone, end_pos[3];
		start_pos	= start;
		end_bone	= end;

		if (is_visible(ent, start, end)) return true;

		ray.init(start, end);

		i::enginetrace->trace_ray(ray, MASK_SHOT, &filter, &trace);

		end_pos[0] = trace.end_pos;

		ray.init(end_bone, start_pos);
		filter.skip = ent;
		i::enginetrace->trace_ray(ray, MASK_SHOT, &filter, &trace);

		end_pos[1] = trace.end_pos;

		vector_subtract(end_pos[0], end_pos[1], end_pos[2]);

		float length = end_pos[2].length();

		if (trace.fraction != 0)
			if (length < 13)
				return true;

		return false;

	}