[Code/ Idea] bullets without entities

///////////////////////////////
#include <acknex.h>
#include <default.c>
///////////////////////////////

void p_bullet(PARTICLE* p)
{
	vec_set(p.blue,vector(random(128),128+random(128),255));
	set(p, STREAK | BRIGHT);
	p.alpha = 100;
	p.size = 10;
	p.lifespan = 0.01;
	p.event = NULL;
}

void bullet_create(VECTOR* vpos,VECTOR* vang,var speed)
{
	var alive = 16;
	VECTOR pos,temp,vel;
	
	vec_set(pos,vpos);
	vec_set(vel,vector(speed,0,0));
	vec_rotate(vel,vang);

	while(alive > 0)
	{
		// calculate new position
		vec_set(temp,vel);
		vec_scale(temp,time_step);
		vec_add(temp,pos);
		c_trace(pos,temp,IGNORE_PASSABLE | USE_POLYGON); // optional: SCAN_TEXTURE
		if(trace_hit)
		{
			/*if(you) ... // reduce health, blood effect
			else ... // spark effect*/
			alive = 0;
		}
		effect(p_bullet,1,pos,vel); // you may want to shorten vel on impact
		vec_set(pos,temp); // move to new position

		alive -= time_step;
		wait(1);
	}
}


void main()
{
	fps_max = 60;
	video_mode = 9;
	level_load(NULL);
	ent_create(CUBE_MDL,vector(500,-10,-5),NULL);
	def_move();
	while(1)
	{
		if(mouse_left)
		{
			VECTOR temp;
			vec_set(temp,vector(5,-20,-10));
			vec_rotate(temp,camera.pan);
			vec_add(temp,camera.x);
			bullet_create(temp,camera.pan,500);
			wait(-0.1);
		}
		wait(1);
	}
}