Known performance errors:

• EntityManager.LateUpdate()

Possibilities (not confirmed)

• Constant recalculation of pathfinding and navmesh

Instead of doing all calculations in one frame, divide them in different frames
For example, to update 1000 animales, update 50 per frame for a total of 20 frames (1000/50). This could be any number as long as is stable and performs at a good framerate

Add multi-threading

Main thread stable at 30 FPS
Secondary thread to calculate pathfinding and other expensive operations that are not urgent for the next frame

r: animal that has a short lifespan and its strategy is to reproduce as many times as possible and have the maximum amount of babies. Example: Mouse

K: animal that has a long lifespan and its strategy is to reproduce only a couple of times, but to have strong babies that are more likely to survive
Example: Elephant

Write the documentation for the Methodology section

At this moment, the trees can spawn on any green area, but they should be only able to spawn on areas where there are no trees.

Possible solution:
Represent the world into a 2d map, so that it's possible to implement a two-dimensional hashmap/dictionary which holds the coordinates as key, and true/false if there is a tree on the area. Alternatively, it can hold an int (0,1,2) if the areas can hold X amount of trees with certain density.

Actual behavior

Newborns are spawned with an adult size

Expected behavior

Newborns should spawn at a reduced size, equivalent of 1 year of life

Thoughts

Maybe OnSpawn() is not being called correctly?

Write the documentation for the Project Development section

All the trees have the exact same rotation and it looks repetitive

Write the documentation for the State of the Art section

Carnivores are similar to herbivores in the sense that have the same stats: hunger, reproduction urge, etc.
However, when they are hungry they look to hunt other animals instead of looking for fruits or vegetables.

1. When animals are adults, they should have a reproduction urge stat that increases over time.
2. When their reproduction urge is great enough and other stats with greater priority are met (e.g. hunger and survival), they start looking for a mate of the opposite sex.
3. If a match is found, the female gets pregnant and becomes unavailable. The gestation period begins.
4. The pregnant female reduces its skills (lower speed, more hunger, etc)
5. Once gestation period has come to an end, a baby from the same species is born.

• Trees
• Animals
• Food

• Vector3.Distance works, but it can be slow given that internally it does a square root (sqrt). Use the squared distance instead to avoid expensive operations.

If an optimized method similar to Vector3.Distance exists using NavMesh, then do this.
Else if an optimized method (in general) similar to Vector3.Distance but without "sqrt" exists, use this

Potential information:
https://stackoverflow.com/questions/50153370/how-to-get-the-closest-object-in-the-navmesh-and-making-the-agent-move-towards-i

• Levy walk:
  Example in C++

a=1 (m?)
b=5000-10000 (m?)

levy(a,b,mu){
        double u = random_within(0,1);
        double range = pow(b,1-mu) - pow(a, 1-mu);
        double base = range*u + pow(a,(1-mu));
        out = pow(base,1/(1-mu));
return(out)   
}

Currently there can be around 10-15.000 trees at a approximately 15-25fps

The next obstance is reduce the impact that rendering has in the simulation. If rendering had 0 impact, the simulation would run at 60 fps with some spikes to 20fps

• Field of view. For example, a circumference around the entity in the ground
• Information from scripts
  • Reproduction (Pregnant...)
  • Current speed, max speed...

• Create a navmesh on the scene
• Create a cube that moves around the scene using the navmesh and pathfinding

For example:

• EntityFactory
• EntityManager
• etc

Write the documentation for the Introduction section

The error appears on multiple different lines, but it's (most likely) related

EntityManager.cs:72

System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) (at <695d1cc93cca45069c528c15c9fdd749>:0)
EntityManager.DeleteEntity () (at Assets/Scripts/Entities/EntityManager.cs:72)
EntityManager.DeleteEntities (System.Int32 maxOfEachTypeToDeleteInThisFrame) (at Assets/Scripts/Entities/EntityManager.cs:94)
EntityManager.LateUpdate () (at Assets/Scripts/Entities/EntityManager.cs:59)

EntityManager.cs:126

System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) (at <695d1cc93cca45069c528c15c9fdd749>:0)
EntityManager+<GrowOrDie>d__19.MoveNext () (at Assets/Scripts/Entities/EntityManager.cs:126)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at <3be1a7ff939c43f181c0a10b5a0189ac>:0)
UnityEngine.MonoBehaviour:StartCoroutine(IEnumerator)
<GrowOrDie>d__19:MoveNext() (at Assets/Scripts/Entities/EntityManager.cs:144)
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)

The user should be able to move the camera around the world

Write the documentation for the Project Management section

• Trees grow with time (it should be possible to see visually how they grow)
• When a tree is old enough, it can reproduce and generate a seed / baby tree. The seed will be placed randomly in a radius of x metres from the parent tree
• The seed will be able to grow only on the same type of bioma

All entities must be represented with an appropiate low poly model. There can't be entities represented by a cube or similar view typical from a blockout or prototype.

What happens now

An animal eat food, but the food doesn't get removed or gets removed in 5-10 seconds. It happens both to herbivores and carnivores. Most likely because of UUIDs

Expected behavior

When an animal eats food, the food should get deleted either instantly or in less than 1 second