Any script for randomizing an enemy/entity spawn with a ranged area/coord?
- Thread starter Mr.Q!
- Start date
You can certainly do it, but yes, it would have to be scripted. IIRC, both @Bloodbane and @Kratus have such systems already. Tagging them to see.
DC
I suggest taking a look at my SOR2X game. In the chars/random folder, there's some dummy enemies used to spawn other enemies applying some randomness.
There you will find random names, palettes, and you can also add random positions following the same logic.
EDIT: You can also try changing the position directly in the level spawn using inline scripts. The concept would be something like this:
Code:
spawn Galsia
@script
void main()
{
if(random >= chance){
changeentityproperty(self, "position", x+amount, z, y);
}
}
@end_script
flip 1
coords 350 150 0
at 0
Last edited:
Bloodbane
Well-known member
I'm not sure how enemies are spawned in your game.
If they are spawned using enemy spawner, you'd need to modify that spawner to apply position randomizer.
If they are spawned in the level directly, you could use this spawnscript to randomize their position.
RandXY.c:
Declare it like this:
With this declared, Enemy could appear from either left or right edge and at randomized z coord.
If they are spawned using enemy spawner, you'd need to modify that spawner to apply position randomizer.
If they are spawned in the level directly, you could use this spawnscript to randomize their position.
RandXY.c:
C:
void main()
{
void self = getlocalvar("self");
int Minz = openborvariant("PLAYER_MIN_Z");
int Maxz = openborvariant("PLAYER_MAX_Z");
int XPos = openborvariant("xpos"); //Get screen edge's position
int Screen = openborvariant("hResolution"); // Get screen width
int r = rand()%50;
int zW = Maxz - Minz;
int zM = Minz + zW/2;
float dz = zM + zW*r/100;
int W = 60;
if(r%2 == 1){
changeentityproperty(self, "position", XPos + Screen + W, dz);
} else {
changeentityproperty(self, "position", XPos - W, dz);
}
}Declare it like this:
Code:
spawn Enemy
spawnscript data/scripts/RandXZ.c
health 20
coords 400 206
at 0With this declared, Enemy could appear from either left or right edge and at randomized z coord.
Mr.Q!
Well-known member
My bad, I didn't give more information.
Given the image attached to this post (very rough sketch):
Ok so he is getting owned each time he spawns despite having no bbox, and I don't want to add an attack to him, so a spawnscript would be nice, yes, but in a way that it doesn't necessarily spawn outside the screen but within a range starting from his real spawning coord position in the stage .txt file...Something like:
Spawn NinjaOwnedByMeatyAttack
spawnscript <--- A script that checks current spawning coord an randomize within a range from said point, like (minus50 Xpixels, plus50 Xpixels, minus30 Zpixels, plus30 Zpixels)
coords 250 180 0
at 0
Sorry if I am explaining this badly
Given the image attached to this post (very rough sketch):
Ok so he is getting owned each time he spawns despite having no bbox, and I don't want to add an attack to him, so a spawnscript would be nice, yes, but in a way that it doesn't necessarily spawn outside the screen but within a range starting from his real spawning coord position in the stage .txt file...Something like:
- Blue area is the walkable ground
- Yellow are are walls
- Red circle is where the enemy is currently spawning. Imagine he is a ninja so he just teleports there, with a proper anim spawn.
Spawn NinjaOwnedByMeatyAttack
spawnscript <--- A script that checks current spawning coord an randomize within a range from said point, like (minus50 Xpixels, plus50 Xpixels, minus30 Zpixels, plus30 Zpixels)
coords 250 180 0
at 0
Sorry if I am explaining this badly
Attachments
@Mr.Q!
Basically you'd want to start with code that defines a cube based on adjustable coordinates. That way you can just provide the bounding for each spawn as needed. I would give the system a default size so you can shortcut for most uses.
Then within that cube, you can run RNG to get a spot within it.
So on spawn in the designated position, the cube generates centered on the entity, a random spot inside of the cube gets selected and then entity is moved there instantly. On screen, it would appear the entity spawns into a random place within around the general area.
Not too complex really. Just a bit of geometry work and some optimization to minimize the the math.
Unfortunately I'm way too tied up this week to write the code. Interviewing for academic work. Mid next week I could look at making you a sample if no one beats me to it.
DC
Basically you'd want to start with code that defines a cube based on adjustable coordinates. That way you can just provide the bounding for each spawn as needed. I would give the system a default size so you can shortcut for most uses.
Then within that cube, you can run RNG to get a spot within it.
So on spawn in the designated position, the cube generates centered on the entity, a random spot inside of the cube gets selected and then entity is moved there instantly. On screen, it would appear the entity spawns into a random place within around the general area.
Not too complex really. Just a bit of geometry work and some optimization to minimize the the math.
Unfortunately I'm way too tied up this week to write the code. Interviewing for academic work. Mid next week I could look at making you a sample if no one beats me to it.
DC
Mr.Q!
Well-known member
This method having a ranged 'cube' for randomizing spawn position starting from the spawning coord would be the best solution so it can be used with other entities as well depending the different possible scenarios.
Mr.Q!
Well-known member
Yes, I mean, if should just pay attention to the spawning coord in the stage .txt and starting from there, a randomized spawning range acting as a 'cube' like DC said, so it shouldn't matter if it's onscreen or offscreen . This can actually have lots of uses for npc's, weather stuff, environment, etc.