const std = @import("std");
const rl = @import("raylib");

//Max Vars

pub const MAXEntitys: u32 = 1000;

pub const MAXComponents: u32 = 32;

//Id Types
pub const Entity = usize;

pub const Component = usize;

pub const Signature = std.bit_set.IntegerBitSet(MAXComponents);

//Component array type

pub const ComponentArray = struct {
    Components: [MAXEntitys]type,
    Entity2Array: [usize]Entity,
    Array2Entity: [Entity]usize,
    sizeM: usize,

    pub fn AddComponent(self: ComponentArray, entity: Entity, comp: type) void {
        var newidx: usize = self.sizeM;
        self.Entity2Array[entity] = newidx;
        self.Entity2Array[newidx] = entity;
        self.Components[newidx] = comp;
        self.sizeM += 1;
    }
    pub fn Removedata(self: ComponentArray, entity: Entity) void {
        var remidx: usize = self.Entity2Array[entity];
        var lastidx: usize = self.sizeM - 1;
        self.Components[remidx] = self.Components[lastidx];

        var lastentity: entity = self.Array2Entity[lastidx];
        self.Entity2Array[lastentity] = remidx;
        self.Array2Entity[remidx] = lastentity;

        self.Entity2Array[entity] = null;
        self.Array2Entity[lastentity] = null;

        self.sizeM -= 1;
    }
    pub fn GetData(self: ComponentArray, entity: Entity) type {
        return self.Components[self.Entity2Array[entity]];
    }
    pub fn EntityDestroyed(self: ComponentArray, entity: Entity) void {
        for(self.Array2Entity) |val|{
            if(val == entity){
                self.Removedata(entity);
                return;
            }
        }
    }
};


//Components

pub const Transform = struct {
    pos: rl.Vector2,
    rot: f16,
    scale: rl.Vector2,
};