FF7/Field/Script/Opcodes/31 IFKEYON - Revision history

BukTop: 4 revisions imported

2019-05-23T02:16:37Z

4 revisions imported

my_wiki>BukTop: 3 revisions imported

2018-04-04T09:34:26Z

3 revisions imported

my_wiki>Synergy Blades: /* Description */ sp

2007-01-20T13:07:02Z

‎Description: sp

my_wiki>Synergy Blades at 17:43, 19 January 2007

2007-01-19T17:43:34Z

my_wiki>Synergy Blades at 15:43, 19 January 2007

2007-01-19T15:43:33Z

New page

* Opcode: '''0x31'''
* Short name: '''IFKEYON'''
* Long name: If Key Pressed (First Time)

==== Memory layout ====
{| border="1" cellspacing="1" cellpadding="3" style="border: 1px solid black; border-collapse: collapse;"
! width="40" | 0x31
! width="40" | ''B''
! width="40" | ''A''
|}

==== Arguments ====

* '''const UShort (Bit field)''' ''B'': Button ID to check for.
* '''const UByte''' ''A'': Amount to jump if condition is false.

==== Description ====

Similar to [[FF7/Field/Script/Opcodes/30_IFKEY|IFKEY]], '''IFKEYON''' checks if a button is being pressed with the given ID (matching those in IFKEY). However, the body of the "if" statement only executes if this is the first time the button has been recorded as being pressed. If this is not the first time it is being pressed (that is, the user has held the key down), the condition evaluates to false, and the "if" statement body does not execute, moving the script pointer forward by ''A''.

This is an effective way to stop repeatedly executing the body if the "if" statement due to the user holding the key down; thus, the body of the statement will only execute once. The button state is reset when the user lets go of the button, and at this point, IFKEYON may evaluate to true once more when the button is repressed.

← Older revision		Revision as of 13:07, 20 January 2007
Line 19:		Line 19:
	Similar to [[FF7/Field/Script/Opcodes/30_IFKEY\|IFKEY]], '''IFKEYON''' checks if a button is being pressed with the given ID (matching those in IFKEY). However, the body of the "if" statement only executes if this is the first time the button has been recorded as being pressed. If this is not the first time it is being pressed (that is, the user has held the key down), the condition evaluates to false, and the "if" statement body does not execute, moving the script pointer forward by ''A''.		Similar to [[FF7/Field/Script/Opcodes/30_IFKEY\|IFKEY]], '''IFKEYON''' checks if a button is being pressed with the given ID (matching those in IFKEY). However, the body of the "if" statement only executes if this is the first time the button has been recorded as being pressed. If this is not the first time it is being pressed (that is, the user has held the key down), the condition evaluates to false, and the "if" statement body does not execute, moving the script pointer forward by ''A''.

−	This is an effective way to stop repeatedly executing the body if the "if" statement due to the user holding the key down; thus, the body of the statement will only execute once. The button state is reset when the user lets go of the button, and at this point, IFKEYON may evaluate to true once more when the button is repressed.	+	This is an effective way to stop repeatedly executing the body of the "if" statement due to the user holding the key down; thus, the body of the statement will only execute once. The button state is reset when the user lets go of the button, and at this point, IFKEYON may evaluate to true once more when the button is repressed.

← Older revision	Revision as of 02:16, 23 May 2019
(No difference)

← Older revision	Revision as of 09:34, 4 April 2018
(No difference)

@@ Line 6: / Line 6: @@
 {| border="1" cellspacing="1" cellpadding="3" style="border: 1px solid black; border-collapse: collapse;"
 ! width="40" | 0x31
-! width="40" | ''B''
+! width="80" | ''B''
 ! width="40" | ''A''
 |}