Following AI?

MonteGargano

Hello all, i have a good few months of extensive experience with GS now, and so decided to try making a game. The game movement is supposed to be grid based. It is a rogue-like where the enemies only move if you are. I have movement set up with my player, and as there is no way to make a grid - that i could find anyways - i just told the player to change its position to self.positionX+40, and so on to simulate a grid. Because of this, i cant just tell the enemies to follow the player as they wont move on the grid like the player does. I'm trying to find a way to make the enemy decide which direction it would be best for it to move in based on how far away the player is. I have made the enemy track the players position, and have set up playerX and playerY attributes for the game. This is probably quite hard to understand so if you have any questions just ask. I would really appreciate any help of even just suggestions at this pint. Thanks in advance.

MonteGargano

is it on youtube?

Braydon_SFX

@MonteGargano -- Yes, on our GSHelper.com channel.

MonteGargano

if its the grid based movement tutorial, i cannot open the GS file as I'm on windows. is there a way to open mac GS files on windows or no?

Braydon_SFX

There's a video tutorial for that as well on our channel.

MonteGargano

yeah i just read a forum thread. i renamed the gsuser file to a gsproj and now it works. thanks

MonteGargano

well ive adapted the code to work with my level, but i still have no idea how to make they enemies move towards my whilst following the grid. any ideas?

tatiang

i still have no idea how to make they enemies move towards my whilst following the grid. any ideas?

First you need an algorithm. Then you can fill in the details with specific rules and behaviors. Your algorithm might look something like this (assume column #s increase from left to right and row #s increase from top to bottom, just like in a table):

Enemy movement
Each turn:
Check player's row/col position on the grid
If my row ≠ player's row then
     If my row < player's row then
          Move to grid square in row [my row+1] and col [my col]
     If my row > player's row then
          Move to grid square in row [my row-1] and col [my col]
Else
     If my column < player's column then
          Move to grid square in row [my row] and col [my col+1]
     If my column > player's column then
          Move to grid square in row [my row] and col [my col-1]


Obviously, that's just a small snippet of the entire algorithm but perhaps that will offer you some insights into completing it.

Then if you need help with a specific step, just post your algorithm here and we can fill in the details about how to code it.

MonteGargano

well i used tshirtbooth's grid based movement template.
im aware this isnt the table grid that was mentioned before. can someone explain to me how to do the table grid, or point in the direction of a video? it would make the AI a lot easier to do. thanks for the help

tatiang

I recommend this template: http://www.deepblueapps.com/collisions-with-tables-template.