3 replies to this topic

[rochowmaster]

Hey guys,

I am making a platformer. I have my enemy shoots arrows. My player has the ability to make arrows fire back at the enemy, so in the collision with arrow event, I put a simple line of code:

hp-=15

but since I am using the following:

//Gravity
if place_free(x,y+1)
 {
 gravity=gravity_speed
 gravity_direction=270
}
if !place_free(x,y+1)
 {
 gravity=0
 gravity_direction=0
}

if !place_free(x,y-1)
 {
 move_bounce_solid(false)
}

if !place_free(x+1,y)
 {
 move_bounce_solid(false)
}

if !place_free(x-1,y)
 {
 move_bounce_solid(false)
}

//Define if the enemy_unit object exists
if instance_exists(enemy)
 {
 enemy=instance_nearest(x,y,enemy_unit)
}

//AI
if distance_to_point(enemy_unit.x,enemy_unit.y)<=hitrange and !collision_line(x,y,enemy_unit.x,enemy_unit,obj_ground,false,true)
 {
 //hit enemy
 hspeed=0
 show_message("Hitting")
 moving=false
}
else
 {
 if distance_to_object(instance_nearest(x,y,obj_bow))<distance_to_object(enemy_unit) and hasbow=false
  {
  //pick up bow automatically
  move_contact_solid(point_direction(x,y,instance_nearest(x,y,obj_bow).x,y),3)
  moving=true
 }
 else
 {
 if distance_to_point(enemy_unit.x,enemy_unit.y)<=shootrange and hasbow=true and !collision_line(x,y,enemy_unit.x,enemy_unit.y,obj_ground,false,true)
  {
  //shoot enemy with bow (if it has one)
  if floor(random(20))=0
   {
   [u]instance_create(x,y,obj_arrow)[/u]
  }
  moving=false
 }
 else
  {
  if distance_to_point(enemy_unit.x,y)>hitrange
   {
   move_contact_solid(point_direction(x,y,enemy_unit.x,y),3)
   moving=true
   if speed=0
    {
    if !place_free(x+move_speed*5,y) or !place_free(x-move_speed*5,y)
     {
     vspeed=-jump_speed
    }
    else
     {
     hspeed=0
     moving=false
    }
   }
  }
 }
}
}

//Facing towards the player
if x<enemy_unit.x
 {
 image_xscale=1
 right=true
}
else
 {
 if x>enemy_unit.x
  {
  image_xscale=-1
  right=false
 }
}

... The enemy takes damage when he fires.(yes, I'm using Lasse's AI example.)
In my arrow object, in the create event, I have move_towards_point code which makes my arrow move.
I think the solution may be in the underlined snippet of code above.
is there perhaps a way to create the arrow a little away from the object?

thanks,
Rochowmaster.

[Awesomeness]

Instead of having

instance_create(x,y,obj_arrow)

you could use a variable for x, putting

variable_name=10*dir                        
/*
with dir being a variable that is determined by the direction you're facing (1 for right and -1 for left), 
and the 10 making it 10 pixels away from you, or however many you want
*/
instance_create(variable_name,y,obj_arrow)  
/*
which makes the arrow 10 pixels to the right if you face right, or 10 pixels to the left if you face left.
*/

(I'm just assuming it's a 2D platformer and it only shoots to the left and right; you could do the same with y as well if you need to)

Hope that helps!

- Awesomeness

Edited by Awesomeness, 30 April 2011 - 06:06 AM.

[MasterOfKings]

@Awesomeness: That wouldn't work in the slightest.

@OP: You have...

instance_create(x,y,obj_arrow);

Get rid of the move_towards_point() part, and replace your instance_create() code with...

with (instance_create(x,y,obj_arrow)) {
    speed=6;
    direction=point_direction(x,y,enemy.x,enemy.y)-3+random(6);
}

Where you see the 3 and 6; that's the accuracy. The arrow's direction will vary by 3.

-MoK

[rochowmaster]

@Awesomeness: That wouldn't work in the slightest.

@OP: You have...

instance_create(x,y,obj_arrow);

Get rid of the move_towards_point() part, and replace your instance_create() code with...

with (instance_create(x,y,obj_arrow)) {
    speed=6;
    direction=point_direction(x,y,enemy.x,enemy.y)-3+random(6);
}

Where you see the 3 and 6; that's the accuracy. The arrow's direction will vary by 3.

-MoK

I commend you, master of kings. Atra Esterni ono thelduin