Detect Collision on actor (from direction)

NMansell

is there a way to detect where the collision on the actor occured, so if I have a square box in the centre, if another actor hits it I can detect whether it was hit from top, bottom, left or right?

MotherHoose

on collidingActor:
in the Rule for collides with box
another Rule in the behavior area
… when self.PositionX > box.Position.X
then it is a rightSideHit …Otherwise: when < … it is leftHit
… when self.Position.Y > box.Position.Y
then it is a topSideHit … Otherwise: when < … it is bottomHit

add gameAttributes to store hitValues
and use those values for rule conditions for actions after collides

==
though might be easier to create a sensorActor
drag 4 instances to scene … name appropriately: top, bottom, right, left

add gameAttribute … text type … hitArea

sensorActor prototype:
Rule: when
Event: overlaps/collides with other actors
-changeAttribute: game.hitArea To: self.Name

Rule: when
Attribute: game.hitArea is top
-do top actions

4 rules for the 4 possible hitAreas

when the action is completed:
… be sure to changeAttribute: game.hitArea To: (and leave it blank)


MH

jamie_c

Here is a detailed tutorial that might help.

http://www.jamie-cross.net/?p=607

Jamie