Conditional branch "If player is facing event [ID]" script call

[GothicMonocle]

SO I need an event (Event ID 002) to check if the player is facing towards it in order to perform a certain action.
I figured out a small portion of the code I need to use but the rest is really lost on me. Can anyone help?

 $game_player.direction == (...)

I really hope my description was helpful and this gets resolved soon. Because I have no idea what to do and by now my brain is essentially fried. Anyway, thank you in advance.

 

[Wavelength]

Generally the way I check to see which direction one thing needs to orient in order to be facing another thing is to check the relationship between their x and y values. You can do this through code or eventing (by setting variables' values to that of the player's/event's positions, and subtracting/comparing them). In Ace I believe the built-in vars for x and y are simply "x" and "y" (although if your map wraps it can become more complex).

I would write it as:
dist_x = $game_map.events[2].x - $game_player.x
dist_y = $game_map.events[2].y - $game_player.y
if ((dist_x.abs >= dist_y.abs) and (dist_x >= 0)) # object is further away in x-dir, and object is to the right of the player
direction_needed = 6
end
if ((dist_x.abs >= dist_y.abs) and (dist_x < 0)) # object is further away in x-dir, and object is to the left of the player
direction_needed = 4
end
if ((dist_x.abs < dist_y.abs) and (dist_y >= 0)) # object is further away in y-dir, and object is below the player
direction_needed = 2
end
if ((dist_x.abs < dist_y.abs) and (dist_y < 0)) # object is further away in y-dir, and object is above the player
direction_needed = 8
end

Then finally you'd plug in the line you'd written:
if ($game_player.direction == direction_needed)
Do things, such as show a message "Hey, you! Stop looking at me!"
end

 

[GothicMonocle]

Generally the way I check to see which direction one thing needs to orient in order to be facing another thing is to check the relationship between their x and y values. You can do this through code or eventing (by setting variables' values to that of the player's/event's positions, and subtracting/comparing them). In Ace I believe the built-in vars for x and y are simply "x" and "y" (although if your map wraps it can become more complex).

I would write it as:
dist_x = $game_map.events[2].x - $game_player.x
dist_y = $game_map.events[2].y - $game_player.y
if ((dist_x.abs >= dist_y.abs) and (dist_x >= 0)) # object is further away in x-dir, and object is to the right of the player
direction_needed = 6
end
if ((dist_x.abs >= dist_y.abs) and (dist_x < 0)) # object is further away in x-dir, and object is to the left of the player
direction_needed = 4
end
if ((dist_x.abs < dist_y.abs) and (dist_y >= 0)) # object is further away in y-dir, and object is below the player
direction_needed = 2
end
if ((dist_x.abs < dist_y.abs) and (dist_y < 0)) # object is further away in y-dir, and object is above the player
direction_needed = 8
end

Then finally you'd plug in the line you'd written:
if ($game_player.direction == direction_needed)
Do things, such as show a message "Hey, you! Stop looking at me!"
end

I am most likely the one screwing this up, however:
I did this:

And on the conditional branch I called this:

key?(:item,12) && $game_player.direction == direction_needed

^ this little code snippet is from another script

But now what happens is this:



I am sorry if I am making this more complicated than it needs to be. But it's important that everything works.

 

[Wavelength]

That's because the "scope" of variables (such as direction_needed) defined within a Script block is limited to that script block. You are trying to work with the direction_needed variable outside of that Script block.

Either save the variable to a Game Variable (you can do this with a line like $game_variables[250] = direction_needed ) and then use that game variable in the Conditional Branch later, or move your whole Conditional Branch check back to the Script block (run that line to get a 'true' or 'false' value and save that to a Game Switch with a line like $game_switches[208] = ((blahblahblahconditionalcheck)) ).

 

[GothicMonocle]

That's because the "scope" of variables (such as direction_needed) defined within a Script block is limited to that script block. You are trying to work with the direction_needed variable outside of that Script block.

Either save the variable to a Game Variable (you can do this with a line like $game_variables[250] = direction_needed ) and then use that game variable in the Conditional Branch later, or move your whole Conditional Branch check back to the Script block (run that line to get a 'true' or 'false' value and save that to a Game Switch with a line like $game_switches[208] = ((blahblahblahconditionalcheck)) ).

O M G! Thank you! This works. This actually works! It's going to be useful not only in this single instance, but in many future uses! I cannot thank you enough!

 

[Oddball]

Like an enemy that only attacks if you look at it?

 

[Wavelength]

I cannot thank you enough!

In that case, just "pay it forward" and help someone else where you see the opportunity to.

I'm glad it's working for you! Like you said, once you get the sense for "drawing lines" between objects in a technical sense, you can do some really cool stuff in games, even including some action mechanics.

 

[Thefirelion]

I think than Something more simplified could this be:

($game_map.events[?].y - $game_player.y) == 0 && ($game_map.events[?].x - $game_player.x) == -2 && $game_player.direction == 4

To check if the player is watching a certain event at a certain distance and facing direction.