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ff3:ff3us:tutorial:events:action [2018/05/06 16:53]
lockirby2 [The Actions] |
ff3:ff3us:tutorial:events:action [2019/02/12 10:38] (current)
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| One question that you may have been asking yourself is "How do I make the characters move?" Action queues contain a set of actions that you want a character to perform. For example, you could queue up the actions "walk one step up", "turn left", and "nod head left". If you set up action queues correctly, you can have multiple characters executing a complex series of actions at the same time. If you've been following the tutorial so far, action queues will be fairly straightforward to learn. | One question that you may have been asking yourself is "How do I make the characters move?" Action queues contain a set of actions that you want a character to perform. For example, you could queue up the actions "walk one step up", "turn left", and "nod head left". If you set up action queues correctly, you can have multiple characters executing a complex series of actions at the same time. If you've been following the tutorial so far, action queues will be fairly straightforward to learn. |
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| ===== Starting an Action Queue ===== | ==== Starting an Action Queue ==== |
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| Starting an action queue works just like executing any other event command, although the number of parameters can vary depending on how many actions you want the character to take. Any command between $00 and $34 will start an action queue for one character. The Event Command Document has some information on which character will take action. This character will fall into one of the following categories: | Starting an action queue works just like executing any other event command, although the number of parameters can vary depending on how many actions you want the character to take. Any command between $00 and $34 will start an action queue for one character. The Event Command Document has some information on which character will take action. This character will fall into one of the following categories: |
| * $10 - $2F: Non-player characters. Different NPCs will take action depending on what map is loaded. You can cross-reference the Event Commands Document and FF6LE to figure out which command corresponds to the NPC that you want to move. According to the Event Commands Document, the $16 command will begin an action queue for NPC 6 in FF6LE. If you open the LE and select "[014] Narshe, Outside (WOB)", you can see that NPC 6 is a guard on this map. If you select "[15D] Thamasa, Strago's House", you can see that NPC 6 is a lookalike of Shadow on this map. | * $10 - $2F: Non-player characters. Different NPCs will take action depending on what map is loaded. You can cross-reference the Event Commands Document and FF6LE to figure out which command corresponds to the NPC that you want to move. According to the Event Commands Document, the $16 command will begin an action queue for NPC 6 in FF6LE. If you open the LE and select "[014] Narshe, Outside (WOB)", you can see that NPC 6 is a guard on this map. If you select "[15D] Thamasa, Strago's House", you can see that NPC 6 is a lookalike of Shadow on this map. |
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| {{:ff3:ff3us:tutorial:events:action:npc_6_guard.png|}} | {{ :ff3:ff3us:tutorial:events:npc_6_guard.png |}} |
| {{:ff3:ff3us:tutorial:events:action:npc_6_shadow.png|}} | {{ :ff3:ff3us:tutorial:events:npc_6_shadow.png |}} |
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| * $30: The camera. You can make the camera "walk" around the map, just like any other character. If you tell the camera to move upwards eight steps, the player's view will shift eight tiles upwards. | * $30: The camera. You can make the camera "walk" around the map, just like any other character. If you tell the camera to move upwards eight steps, the player's view will shift eight tiles upwards. |
| * $31 - $34: The characters in the party. Often, the player has the opportunity to pick a party of their choosing, so you won't know what characters are in the party during your event. By using the $31 command, you can move whomever happens to be leading the party. Figuring out which character is in the lead (and then moving them manually) would be a lot more difficult. | * $31 - $34: The characters in the party. Often, the player has the opportunity to pick a party of their choosing, so you won't know what characters are in the party during your event. By using the $31 command, you can move whomever happens to be leading the party. Figuring out which character is in the lead (and then moving them manually) would be a lot more difficult. |
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| ===== The Second Byte ===== | ==== The Second Byte ==== |
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| The main purpose of the second byte is to tell the game how long the action queue will be. Most of the time, you should decide what actions you want to put in the queue before filling in this byte. You can have up to $7F (127 in decimal) actions in a queue, but it's unlikely that you will need anywhere near that many. | The main purpose of the second byte is to tell the game how long the action queue will be. Most of the time, you should decide what actions you want to put in the queue before filling in this byte. You can have up to $7F (127 in decimal) actions in a queue, but it's unlikely that you will need anywhere near that many. |
| This byte also allows you to tell the game whether you want to finish the character's actions before moving on with the event. If you add $80 to this byte (after figuring out how long you want the queue to be), the game will wait for a character's actions to finish before moving on. Otherwise, the game will not wait. The latter is useful if you want to make multiple characters move at the same time, among other things. | This byte also allows you to tell the game whether you want to finish the character's actions before moving on with the event. If you add $80 to this byte (after figuring out how long you want the queue to be), the game will wait for a character's actions to finish before moving on. Otherwise, the game will not wait. The latter is useful if you want to make multiple characters move at the same time, among other things. |
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| ===== The Actions ===== | ==== The Actions ==== |
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| This is the meat of the action queue, containing the actions that you want the character to perform. There is a list of actions [[ff3:ff3us:doc:asm:codes:movement_codes|here.]] The vast majority of these are self-explanatory. Many just tell the character to strike a pose or walk somewhere. The commands between $C0 and $C4 allow you to change how fast the character walks when they move. Ignore the commands related to branching or setting event bits for now; these will be covered in later sections of the tutorial. | This is the meat of the action queue, containing the actions that you want the character to perform. There is a list of actions [[ff3:ff3us:doc:asm:codes:movement_codes|here.]] The vast majority of these are self-explanatory. Many just tell the character to strike a pose or walk somewhere. The commands between $C0 and $C4 allow you to change how fast the character walks when they move. Ignore the commands related to branching or setting event bits for now; these will be covered in later sections of the tutorial. |
| All action queues need to be ended with the $FF command. Once you have finished the body of your queue, don't forget to count how long it is and fill in the second byte. The $FF command should also be included in this count. | All action queues need to be ended with the $FF command. Once you have finished the body of your queue, don't forget to count how long it is and fill in the second byte. The $FF command should also be included in this count. |
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| ===== Our First Action Queue ===== | ==== Our First Action Queue ==== |
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| It's finally time to fix the repetition of the cutscene. In order to prevent the event from repeating, we want the party to step off the event tile before the event ends. We could use $00 to begin an action queue for Terra, but we don't know who will be leading the party when the player steps on the event tile. If the player were to switch Biggs to the front of the party, our event would fall apart. Therefore, we should begin the queue with the $31 command. | It's finally time to fix the repetition of the cutscene. In order to prevent the event from repeating, we want the party to step off the event tile before the event ends. We could use $00 to begin an action queue for Terra, but we don't know who will be leading the party when the player steps on the event tile. If the player were to switch Biggs to the front of the party, our event would fall apart. Therefore, we should begin the queue with the $31 command. |
| {{:ff3:ff3us:tutorial:events:action_queue_1.png|}} | {{:ff3:ff3us:tutorial:events:action_queue_1.png|}} |
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| ===== A Larger Example ===== | ==== A Larger Example ==== |
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| Right now, the event uses a red flash to indicate that the guards are approaching. This would be improved if guards were to physically approach the party. Since the battle includes two guards, we want two guards in the event as well. | Right now, the event uses a red flash to indicate that the guards are approaching. This would be improved if guards were to physically approach the party. Since the battle includes two guards, we want two guards in the event as well. |
| The NPCs aren't easily noticed because they are all in the top-left hand corner. Spreading them out, we can see that there are two guards, two dogs, and an old man whose purpose isn't obvious. Since there are only two guards, it appears that they are reused for all the cutscenes in this area. We can follow the lead of the vanilla designers and do the same. Clicking on the guards, we can see that they are NPC #0 and NPC #1. | The NPCs aren't easily noticed because they are all in the top-left hand corner. Spreading them out, we can see that there are two guards, two dogs, and an old man whose purpose isn't obvious. Since there are only two guards, it appears that they are reused for all the cutscenes in this area. We can follow the lead of the vanilla designers and do the same. Clicking on the guards, we can see that they are NPC #0 and NPC #1. |
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| {{:ff3:ff3us:tutorial:events:action:narshe_npcs.png|}} | {{ :ff3:ff3us:tutorial:events:action:narshe_npcs.png |}} |
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| Now we can cross-reference this with the Event Commands Document, which states that we can use $10 to move NPC #0 and $11 to use NPC #1. We will need to create a separate action queue for each of the two guards. | Now we can cross-reference this with the Event Commands Document, which states that we can use $10 to move NPC #0 and $11 to use NPC #1. We will need to create a separate action queue for each of the two guards. |