Using the Arrow Keys to Move

11-20-2005, 03:14 PM	#1
Nebu_Bei	Could anyone tell me how to make a trigger(s) that would allow me to move my hero with the arrow keys?

11-20-2005, 05:17 PM	#2
Thunder_Eye	I have that kind of trigger somewhere.. I could look it up if you want.

11-20-2005, 06:28 PM

tassadar920

You have to have four triggers, each with the event that checks the keyboard, I forgot the exact name but it's pretty obvious.

Anyways, when they press "down" on the up key you will want to order the unit to move to a point all the way across the map, directly forward from them, when they release it you tell them to stop. If you want people to be able to walk in reverse it gets very complicated, so I recommend not bothering with that.

For the turning it's a little more complicated, I would recommend making a trigger that is periodic, maybe 5 times a second or so it changes orientation +1 degree, you need a second trigger for -1 degree (left turn). Set both to be initially off. Then make 4 triggers, two that when the key is pressed the trigger turns on the periodic event (and also turns slightly right away otherwise you get a "delay" on turning) and two more that turn both periodic triggers off.

Hopefully that made sense.

11-20-2005, 07:05 PM	#4
Nebu_Bei	I think I got it. Thanks.

12-19-2005, 12:59 PM	#5
qwertyui	Last time i checked, there was no trigger that captured key releases. But then again, last time i checked it was quite some years ago :)

12-19-2005, 01:10 PM

Zoxc

The unit variable: commonunit is the unit you are controlling.
real, camerarotation: is how the camera is turn.
integer, array Movement is what keys that are pressed.

GetCommonUnit returns commonunit.

You go forward/backwards with Up/Down. Rotates the camera with Left/Right.

The unit animation is flickering thus...

Custom Script:

JASS:

function CameraFields takes nothing returns nothing
call SetCameraFieldForPlayer(Player(0),CAMERA_FIELD_TARGET_DISTANCE,570,0)
call SetCameraFieldForPlayer(Player(0),CAMERA_FIELD_ANGLE_OF_ATTACK,320,.50)
call SetCameraFieldForPlayer(Player(0),CAMERA_FIELD_FIELD_OF_VIEW,860,0)
call SetCameraFieldForPlayer(Player(0),CAMERA_FIELD_ZOFFSET,105,0)
endfunction

function GetCommonUnit takes nothing returns unit
    return udg_commonunit
endfunction

Trigger:

Init

Events

Time - Elapsed game time is 0.01 seconds

Conditions

Actions

Custom script: call CameraFields()

Set camerarotation = (Facing of commonunit)

Trigger:

Update camera

Events

Time - Every 0.07 seconds of game time

Conditions

Actions

-------- Movement --------

If (All Conditions are True) then do (Then Actions) else do (Else Actions)

If - Conditions

Movement[0] Equal to True

Then - Actions

Set camerarotation = (camerarotation + 10.00)

Else - Actions

If (All Conditions are True) then do (Then Actions) else do (Else Actions)

If - Conditions

Movement[1] Equal to True

Then - Actions

Set camerarotation = (camerarotation - 10.00)

Else - Actions

-------- 0-360 limit --------

If (All Conditions are True) then do (Then Actions) else do (Else Actions)

If - Conditions

camerarotation Less than 0.00

Then - Actions

Set camerarotation = 360.00

Else - Actions

If (All Conditions are True) then do (Then Actions) else do (Else Actions)

If - Conditions

camerarotation Greater than 360.00

Then - Actions

Set camerarotation = 0.00

Else - Actions

-------- Rotation --------

Camera - Set Player 1 (Red)'s camera Rotation to camerarotation over 0.15 seconds

Camera - Lock camera target for Player 1 (Red) to (GetCommonUnit()), offset by (0.00, 0.00) using The unit's rotation

Camera - Change camera smoothing factor to 0.00

Custom script: call CameraFields()

Trigger:

Update movement

Events

Time - Every 0.20 seconds of game time

Conditions

Actions

Custom script: local location up = GetUnitLoc(GetCommonUnit())

Custom script: local location ud

-------- Movement --------

If (All Conditions are True) then do (Then Actions) else do (Else Actions)

If - Conditions

Movement[2] Equal to True

Then - Actions

Custom script: set ud = PolarProjectionBJ(up, 100.00, udg_camerarotation)

Custom script: call IssuePointOrderLoc( GetCommonUnit(), "move", ud )

Custom script: call RemoveLocation(ud)

Else - Actions

If (All Conditions are True) then do (Then Actions) else do (Else Actions)

If - Conditions

Movement[3] Equal to True

Then - Actions

Custom script: set ud = PolarProjectionBJ(up, 0-100.00, udg_camerarotation)

Custom script: call IssuePointOrderLoc( GetCommonUnit(), "move", ud )

Custom script: call RemoveLocation(ud)

Else - Actions

Custom script: call RemoveLocation(up)

Custom script: set up = null

Custom script: set ud = null

Trigger:

Right Up

Events

Player - Player 1 (Red) Releases the Right Arrow key

Conditions

Actions

Set Movement[1] = False

Trigger:

Right Down

Events

Player - Player 1 (Red) Presses the Right Arrow key

Conditions

Actions

Set Movement[1] = True

Trigger:

Left Up

Events

Player - Player 1 (Red) Presses the Left Arrow key

Conditions

Actions

Set Movement[0] = True

Trigger:

Left Down

Events

Player - Player 1 (Red) Releases the Left Arrow key

Conditions

Actions

Set Movement[0] = False

Trigger:

Up Up

Events

Player - Player 1 (Red) Presses the Up Arrow key

Conditions

Actions

Set Movement[2] = True

Trigger:

Up Down

Events

Player - Player 1 (Red) Releases the Up Arrow key

Conditions

Actions

Set Movement[2] = False

Trigger:

Down Down

Events

Player - Player 1 (Red) Releases the Down Arrow key

Conditions

Actions

Set Movement[3] = False

Trigger:

Down Up

Events

Player - Player 1 (Red) Presses the Down Arrow key

Conditions

Actions

Set Movement[3] = True

12-19-2005, 02:05 PM	#7
qwertyui	Last time i tinkered with this i ran into this problem: U is unit. \| is wall _ is empty space suppose its like this: U___\| You tell the unit to move right, and he does so: _U_\| And then so: __U\| But when he comes up against a wall he suddenly has to path around it, so it becomes something like this: __U_ ___\| I couldn't find where this problem is adressed in that code you posted

12-19-2005, 02:48 PM	#8
Zoxc	Hopefulle he isn't ordered to go over the center of the object. He stays on his side of wall.

12-19-2005, 02:56 PM

qwertyui

Well, then you would have to constantly re-issue movement orders, because you would be giving them over relatively small distances.

As a result, the unit's movement animation becomes incredibly twitchy, constantly replaying a "movement start" part over and over again.

Well, at least it was like this back in 2004 when i tinkered with it :)

Also, there are some very thin walls out there. e.g. fences.

12-19-2005, 02:57 PM	#10
iNfraNe	hmm, ordering is bad for this. SetUnitX/Y works like a charm with custom pathing checks

12-19-2005, 03:02 PM	#11
Zoxc	I really worked hard on this you know :P

12-19-2005, 03:17 PM

#12

qwertyui

Yeah,
I worked on it for days back there, and still couldn't find any solution.

Well, actually i did. That solution is in 3 steps:
1) making the player-controlled unit ignore normal wc3 pathing
2) issue movement orders to the edges of the map, not to 100 units forward
3) draw up "restricted regions" and forcing hero to stop moving every time he attempts entering those

This will still work sucky when you want your hero to be able to move in 360 degrees. But i expect this to work fine when hero is moving in 8 directions only :/

I never implemented it though, since its simply too much work over an imperfect system. wc3 was never meant for keyboard control :(

12-19-2005, 03:42 PM	#13
Anitarf	Actually, you can make quite nice systems, the problem is the lag. The netwok code just wasn't meant for action games. Even games that are played with a mouse, but require manual weapon aiming or stuff like that, are hard to play when you're not host.

04-06-2006, 12:38 AM	#14
Jarock	Zoxc what is Movement [1], [2], [3] comeing from? It can't be a variable because it doesn't alow me to insert "[" or "]". If you would know where the movement stuff is comeing from it could help.

04-06-2006, 05:01 PM	#15
Vexorian	It is an array And this thread is quite old