trig zap gun; fixes

use the trig gun for the zap gun

vacuum_gambit.p8

@@ -876,7 +876,7 @@ end
 
 trig_gun = mknew(gun_base.new{
  veloc = 1,
- aim = 0.25, --use 0.75 for a player gun
+ aim = 0.75, -- down; 0.25 is up
  shot_idx = 0,
  -- shots: list<list<[3]num>>
  --  describing a cycling
@@ -917,7 +917,7 @@ function trig_gun:actually_shoot(x, y)
   -- multiple collision checks
   m.dy = sin(a) * veloc
   m.dx = cos(a) * veloc
-  m.spawn_at(x+(xo or 0), y)
+  m:spawn_at(x+(xo or 0), y)
  end
 end
 
@@ -940,8 +940,6 @@ zap_e = mknew(bullet_base.new{
  y_off = 8,
  
  damage = 1,
- dx = 0,  -- px/frame
- dy = 4,
 
  hitship = const_fxn(true),
 
@@ -950,19 +948,21 @@ zap_e = mknew(bullet_base.new{
 
 zap_p = mknew(zap_e.new{
  sprite = 8,
- dy = -8,
  y_off = 0,
  category = player_blt_cat,
 })
 
-zap_gun_e = mknew(gun_base.new{
+zap_gun_e = mknew(trig_gun.new{
  cooldown = 0x0.0020, -- frames between shots
+ veloc = 4,
  munition = zap_e,
 })
 
 zap_gun_p = mknew(zap_gun_e.new{
  icon = 19,
  munition = zap_p,
+ veloc = 8,
+ aim = 0.25,
  hdr = "mAIN gUN",
 })