Proximity/Distance Check
I am Vectra. I've gotten a request from a friend to do this. I did this for someone else a long time ago so i figured I'll make a tutorial for all who wants to know how.Here's what you need:
4 Variables
4 Conditional Branches
What are the 4 variables?:
X-Coord1
Y-Coord1
X-Coord2
Y-Coord2
Let's say you want to detect the distance between the player and a rock:
To find the x & y-coord of the rock/person
Go to Control Variable
Go to Game Data <= only skip this ONE step if you use Vx
Go to Character
Pick the character (player or the event)
On the right pick MAP Y orMAP X
http://i.imgur.com/XL6f5S2.png
Red is where you pick which event you want to know the coordinates of and the blue is whether you want MAP X or MAP Y. There are other choices, but they are irrelevant. Don't use Screen X or Y because that uses coordinates on-screen and you don't want that.
PL is Player and RO is the rock.
X-Coord = X coordinate
Y-Coord = Y coordinate
You subtract the X-Coords to find the distance horizontally and you subtract the Y-Coords to find the distance vertically.
The multiplying by -1 is so that the number will become positive if the answer happens to be a negative. In mathematics, distance cannot be a negative number.
http://i.imgur.com/rNEmZBX.png
Due to the X-Coord and Y-Coord check needing to be 1, the system checks for diagonals too.
http://i.imgur.com/PN2tyuM.png
You minus the rock's coordinates with the player's coordinates. If the answer is 1 or 0 then they're touching. If you want it like have it where if the rock is 5 steps away then you simply make the condition branches 5 or less instead of 1 or less.
It'll look like this:
This checks if it's 5 steps away horizontally and then checks vertically.
http://i.imgur.com/jkTUZLe.png
http://i.imgur.com/IYnpUtW.png
Wait, but what if I want distance between two events?
Then you replace player with another event. For example, If i wanted the distance between 2 rocks then I simply replace X and Y Coord1 with another event's X and Y Coord instead. If you want to know the distance of more than 2 events then every event added needs 2 variables(X & Y Coord).
SUB-TUTORIAL: DISTANCE
Only difference is you scrap the Y-Coord PL check and add X-Coord and Y-Coord right before the proximity (which is now distance) check.
https://cdn.discordapp.com/attachments/318123836384215041/324597045849489409/Picture1.png
Note: Make sure both types are on parallel process unless you want it to check the distance once.
If you have ANY questions plz ask.
本贴来自国际rpgmaker官方论坛作者:Lord Vectra处,因国际论坛即将永久关站,为了存档多年珍贵资料,署名转载到本论坛存档,由于官方帖子为英文原帖，需要中文翻译请点击论坛顶部切换语言为中文就可以将帖子翻译成中文浏览,方便大家随时查看,原文地址：https://forums.rpgmakerweb.com/threads/proximity-distance-check.79791/
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