53   float pos_x,pos_y;  member
95     float dx = a->pos_x  - b->pos_x;  in collision()
139   player.pos_x = 0;  in game_init()
183 	    enemy[j].pos_x = rnd()*200 - 100;  in game_play()
215     player.pos_x += player.vel_x * game_tick;  in game_play()
218     if (player.pos_x < -100) {  in game_play()
219       player.pos_x = -100;  in game_play()
222     if (player.pos_x > 100) {  in game_play()
223       player.pos_x = 100;  in game_play()
241 	  p_bullet[i].pos_x = player.pos_x + player.radius*dx;  in game_play()
259 	  particle[i].pos_x = player.pos_x - player.radius*dx;  in game_play()
274     player.pos_x = 0;  in game_play()
286       x = player.pos_x - enemy[i].pos_x;  in game_play()
310       enemy[i].pos_x += enemy[i].vel_x * game_tick;  in game_play()
313       if (enemy[i].pos_x < -100) {  in game_play()
314 	enemy[i].pos_x = -100;  in game_play()
317       if (enemy[i].pos_x > 100) {  in game_play()
318 	enemy[i].pos_x = 100;  in game_play()
336 	    e_bullet[j].pos_x = enemy[i].pos_x + enemy[i].radius*dx;  in game_play()
361       vortex[i].pos_x += vortex[i].vel_x * game_tick;  in game_play()
364       if (vortex[i].pos_x < -100) {  in game_play()
365 	vortex[i].pos_x = -200 - vortex[i].pos_x;  in game_play()
368       if (vortex[i].pos_x > 100) {  in game_play()
369 	vortex[i].pos_x = 200 - vortex[i].pos_x;  in game_play()
399 	vortex[i].pos_x  = 200*rnd()-100;  in game_play()
417       p_bullet[i].pos_x += p_bullet[i].vel_x * game_tick;  in game_play()
420       if (p_bullet[i].pos_x < -115 ||  in game_play()
421 	  p_bullet[i].pos_x >  115 ||  in game_play()
452       e_bullet[i].pos_x += e_bullet[i].vel_x * game_tick;  in game_play()
455       if (e_bullet[i].pos_x < -115 ||  in game_play()
456 	  e_bullet[i].pos_x >  115 ||  in game_play()
485       particle[i].pos_x += particle[i].vel_x * game_tick;  in game_play()
549     glTranslatef(player.pos_x, player.pos_y, 0);  in game_render()
576       glTranslatef(enemy[i].pos_x, enemy[i].pos_y, 0);  in game_render()
604       glTranslatef(vortex[i].pos_x, vortex[i].pos_y, 0);  in game_render()
630       glTranslatef(p_bullet[i].pos_x, p_bullet[i].pos_y, 0);  in game_render()
647       glTranslatef(e_bullet[i].pos_x, e_bullet[i].pos_y, 0);  in game_render()
665       glVertex2f(particle[i].pos_x, particle[i].pos_y);  in game_render()