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using Godot;
using System;
using Djup.Native;
public partial class Root : Node2D
{
private IntPtr native_world;
private int[] balls = new int[100];
private Random rng = new();
private const double Tps = 1d/60d;
// Called when the node enters the scene tree for the first time.
public unsafe override void _Ready()
{
RenderingServer.SetDefaultClearColor(Colors.LightGray);
native_world = LibDjup.world_create();
for (int i = 0; i < balls.Length; i++)
{
int id = LibDjup.world_create_entity(native_world, EntityKind.Ball);
if (id < 0)
{
throw new Exception("Failed to create entity");
}
balls[i] = id;
Entity *ent;
var pos = new Vec2(5f * rng.Next(10), 5f * rng.Next(20));
var vel = new Vec2(50f + 5f * rng.Next(10), 50f);
ent = LibDjup.world_find_entity(native_world, balls[i]);
ent->ball.Position = pos;
ent->ball.Velocity = vel;
}
}
public override void _ExitTree()
{
LibDjup.world_free(native_world);
}
private void DrawBall(Ball ball)
{
//Color color = rng.Next(5) switch
//{
//0 => Colors.Black,
//1 => Colors.Blue,
//2 => Colors.Red,
//3 => Colors.Green,
//4 => Colors.Pink
//};
Color color = Colors.Blue;
this.DrawCircle(new Vector2(ball.Position.X, ball.Position.Y), 5f, color, antialiased: true);
}
public unsafe override void _Draw()
{
for (int i = 0; i < balls.Length; i++)
{
DrawBall(LibDjup.world_find_entity(native_world, balls[i])->ball);
}
}
public override void _Process(double delta)
{
this.QueueRedraw();
}
public override void _PhysicsProcess(double delta)
{
if (LibDjup.world_tick(native_world, Tps) != 0)
{
GD.Print("world_tick failed");
}
}
}
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