Rocket Game

2026-09-05 21:01:52 +00:00 · 2022-02-13 15:22:45 +01:00
parent e61c53400f
commit d9e34b27a3
6 changed files with 616 additions and 2 deletions
@@ -0,0 +1,153 @@
+using GlitchyEngine.Renderer;
+using GlitchyEngine.Math;
+using GlitchyEngine;
+using System;
+using System.Collections;
+
+namespace Sandbox
+{
+	class Rocket
+	{
+		Texture2D _rocketTexture ~ _?.ReleaseRef();
+
+		private Vector2 _gravity = .(0, -9.81f);
+
+		public float Power = 50;
+
+		public float FlightSpeed = 2;
+
+		private Vector2 _acceleration = .(0, 0);
+		private Vector2 _speed;
+
+		private Vector2 _position;
+
+		private float _rotation;
+
+		private bool _dead;
+
+		private bool _started = false;
+
+		public List<Obstacle> Obstacles;
+
+		public int Score = 0;
+
+		public this()
+		{
+			_rocketTexture = new Texture2D("content/RocketGame/Rocket.dds");
+			_rocketTexture.SamplerState = SamplerStateManager.PointClamp;
+		}
+
+		public void Update(GameTime gameTime)
+		{
+			FlightSpeed = _dead ? 0.0f : 2.0f;
+
+			if (!_started)
+			{
+				_position = .Zero;
+				
+				if (Input.IsKeyPressed(Key.Space))
+					_started = true;
+				else
+					return;
+			}
+
+			UpdatePosition(gameTime);
+
+			CheckDead();
+		}
+
+		public void Draw()
+		{
+			Renderer2D.DrawQuad(_position, .One, _rotation, _rocketTexture, .White);
+
+			CheckObstacles();
+		}
+
+		Line2D rocketLine;
+
+		private void UpdatePosition(GameTime gameTime)
+		{
+			_acceleration.Y = 0;
+
+			if (!_dead && Input.IsKeyPressed(Key.Space))
+			{
+				_acceleration.Y += Power;
+			}
+
+			Vector2 newSpeed = _speed + (_acceleration + _gravity) * gameTime.DeltaTime;
+
+			Vector2 newPosition = _position + newSpeed * gameTime.DeltaTime;
+
+			_speed = newSpeed;
+			_position = newPosition;
+			
+			float ang = Math.Atan2(_speed.Y, 10) - MathHelper.PiOverTwo;
+
+			_rotation = ang;
+
+			Vector2 dir = Vector2.Normalize(_speed + .(10, 0));
+			rocketLine = .(_position - dir / 2.8f, _position + dir / 2.4f);
+		}
+
+		const float worldBorder = 2.1f;
+
+		private void CheckDead()
+		{
+			if (Math.Abs(_position.Y) >= worldBorder)
+			{
+				_dead = true;
+				_speed.Y *= -0.8f;
+				_position.Y = Math.Clamp(_position.Y, -worldBorder, worldBorder);
+			}
+		}
+
+		private int scoreLine = -1;
+
+		private void CheckObstacles()
+		{
+			for (Obstacle obs in Obstacles)
+			{
+				const float f = Vector2.One.Magnitude();
+
+				Vector2 center = obs.Position;
+				
+				Vector2 topCenter = center + .(0, obs.HoleSize);
+				Vector2 topTip = topCenter - .(0, 2.5f * f);
+				Vector2 topRight = topCenter - .(f, 0);
+				Vector2 topLeft = topCenter + .(f, 0);
+				
+				Vector2 bottomCenter = center - .(0, obs.HoleSize);
+				Vector2 bottomTip = bottomCenter + .(0, 2.5f * f);
+				Vector2 bottomRight = bottomCenter - .(f, 0);
+				Vector2 bottomLeft = bottomCenter + .(f, 0);
+
+				Line2D bottomR = .(bottomTip, bottomRight);
+				Line2D bottomL = .(bottomTip, bottomLeft);
+
+				Line2D topR = .(topTip, topRight);
+				Line2D topL = .(topTip, topLeft);
+
+				if ((bottomR.Intersects(rocketLine) case .Intersection) ||
+					(bottomL.Intersects(rocketLine) case .Intersection) ||
+					(topR.Intersects(rocketLine) case .Intersection) ||
+					(topL.Intersects(rocketLine) case .Intersection))
+				{
+					_dead = true;
+				}
+
+				if (!_dead)
+				{
+					if (Line2D(bottomTip, topTip).Intersects(rocketLine) case .Intersection)
+					{
+						scoreLine = @obs.Index;
+					}
+					else if (scoreLine == @obs.Index)
+					{
+						Score++;
+						scoreLine = -1;
+					}
+				}
+			}
+		}
+	}
+}