Rpg Maker Developers Group

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Next open your Database and go to the Common Events tab. Make a new Common Event named “Event Spawner” or something similar.
 
We are going to make a switch named “Event Spawn” and a Variable Named “Encounter?”.
 
In our common event make a Conditional Branch for if “Event Spawn” is On, check Create Else Branch. In the Else branch you want to use Control Variables and set “Encounter?” to a random number from zero to ninety-nine. Create a Conditional Branch for if Variable “Encounter?” is greater than or equal to 49, check Create Else Branch. We will be using the If branch to keep encounters from spawning at every step, thus we will leave it blank. If you want to make events spawn less often increase the number, to make them spawn more often decrease the number. At this setting events have a 50% chance of spawning each step.
 
In the Else section we will set “Encounter?” to a random number between zero and ninety-nine again. This will be used to determine what event is to spawn. We will come back to this part later.
 
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Next we will make a new Common Event named “Event Despawn”. This event will keep more than one event from spawning and despawn events that are not triggered.
 
First we will create a Conditional Branch for If “Event Spawn” is On. Within this we want to set a new variable named Spawn Counter to be incremented by one (add one to current value). Then another Conditional Branch for If “Spawn Counter” is less than or equal to 50, or however many seconds you want it to take to spawn a new event or an existing event to despawn.
 
Then you want to control switch “Event Spawn” to Off. Make the script call: $gameSystem.clearCustomEvents($gameMap._1);
Set 1 to the name of the map these events will spawn on and make multiple calls for each map that uses this system.
Then control variable “Spawn Counter” to equal zero.
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In the YEP_RegionEvents Plugin you want to pick a region that you want to have your events spawn in. Set the region's value to the Common Event ID of our “Event Spawner”. When the player moves over this region, “Event Spawner” will run.
 
In OrangeTimeSystemEvents you want to set onChangeSecond to our “Event Despawn” Common Event ID. Every game second the “Spawn Counter” variable will be incremented by one.

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Each Event you wish to have spawn needs at least two pages to work. The First page should be blank or, as a fail-safe, use these commands: Use the plugin command “delete this event”, control switch “Event Spawn” to Off, and use Erase Event. I like fail-safes.
 
On page two you want the condition switch “Event Spawn” set to On. The last things you want the event to run are a “delete this event” plugin command and control variable “Spawn Counter” to equal zero.
 
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Back in our “Event Spawner” Common Event we want to setup a conditional branch for each of our events. Lets say that we have two events on our spawn map. We will say If encounter is greater than or equal to 49, check Create Else Branch.
 
For each event we will use the plugin command:
 
copy event ID from map ID to Region ID
 
Make sure your Region ID matches the one you set up earlier. So if we want to to copy event one from map two to region one we would use:
 
copy event 1 from map 2 to region 1
Then we want to control switch “Event Spawn” to On.