#Tinykeep level 2 code
#Tinykeep level 2 crack

To prevent problems with getting stuck - we must increase the wall avoidance distance. We don't get this problem with Seeking, because the target is always the player, who is always in the an empty space. Because it is being repelled by the player, the target destination could be anything - a wall, another monster etc. Unlike the Seek Behaviour, Fleeing comes with a greater risk of getting stuck on walls and sharp corners. The resultant vector is normalized and scaled to the Fire Imp's max speed, so now the monster is repelled away from the player if it gets too close.Ĥ. (Subtract the destination vector from the source vector, rather than the other way around). We use an inverse of the Seek Steering Behaviour, which creates the Flee Steering Behaviour. While in Alert mode, if the player exceeds a certain distance threshold then the Fire Imp begins the flee. At this point the Fire Imp will not flee just yet - the target is not close enough to be a major threat, but it is alerted and wary, and constantly tracking you with its sight.ģ. It will continue to face the target while in Alert mode, as long as it can still see and smell the target. If a raycast to a threat returns true (threat being the player or aggressive monster), Alert mode is turned on and the Fire Imp faces the target. Like the Skeletons, the Fire Imps employ line of sight, the FOV being slightly greater than the Skeletons due to it being prey and not predator. The Fire Imp is constantly looking around for signs of danger - every approximate second or so the monster rotates between a random range of -270 to 270.Ģ. For the demo, Fire Imps in non-alert mode stay in one position, although other Shy monsters may roam/patrol in the same way as Skeletons. Put him in this level of distress for too long, and he'll breathe fire on you, while still attempting to flee.ġ. Fire Imps (and other monsters marked with the 'Shy' personality flag) will run away from the player if he gets too close. Today we'll be following a little Fire Imp as we discuss Retreating and Defensive behaviours. TinyKeep AI System (Part 2 of 5) : Retreating and Defense

#Tinykeep level 2 code

The 'smell trails' have also been shortened significantly to balance out the extra added behaviours - with the last detected code there is no need to have such a long trail, lest we give the impression that the AI is cheating all of the time! This also gives the player the opportunity to hide behind corners and ambush monsters walking past.

It has simply been replaced with a boolean, so either alert or not. Given these changes, we've removed the alert level (range 0-200 etc.) as we've found this feature has become redundant and offers no extra intelligence. Still - for completeness I may modify best guess to take into account the target's last seen velocity and extrapolate from there. Most players won't know the difference, it just looks like the the monster is heading in the general direction and its likely the player has moved on from this point anyway. I admit it's a little bit cheaty of the AI - since it now knows exactly where the character is in order to set the waypoint - but it works well and looks realistic enough because of its slow movement during non-alert patrol mode. If the character moves away after this point, the best guess waypoint remains the same. For this initial version, the 'best guess' is simply the nearest waypoint to the character at the time. If the Skeleton still cannot detect anything from this point (all raycasts to the player and breadcrumbs again return false), Alert mode is dropped and the monster makes a 'best guess' where the character is and sets the patrol waypoint target. This is an improvement from the previous version where a monster would stop and go back to patrolling even though it has detected a target in the past - which is not expected behaviour.Ģ. So, while in Alert mode, if the Skeleton loses sight and smell of the target (all raycasts to the player character or dropped breadcrumbs return false), he will still continue to head towards this last detected location as its final target and re-evaluate from there. The co-ordinate of the last detected entity (either player character or breadcrumb) is saved as a variable every frame. Thanks everyone for helping me improve on the AI so far!ġ.

#Tinykeep level 2 crack

Interactive demos for Parts 1, 1.1 & Part 2 are at the usual place:īefore I crack on with Part 2, I want to quickly mention some minor improvements I've made to Part 1 as a result of community feedback from Reddit and elsewhere. Monster AI System Explained (Part 1 of 5)Īll techniques demonstrated are implemented in my game TinyKeep, which is currently Kickstarting (only 10 days of funding left to go!) This is a continuation of my previous game development 'Explained' posts: