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src/main/java/net/pivipi/LoginHandler.java

@@ -44,6 +44,6 @@ public class LoginHandler {
 
         Ball ball = new Ball();
         ball.setInstance(event.getInstance());
-        ball.teleport(new Pos(0.5, 10, 0.5));
+        ball.teleport(new Pos(0.5, 15, 0.5));
     }
 }

src/main/java/net/pivipi/Main.java

@@ -1,10 +1,14 @@
 package net.pivipi;
 
+
 import net.minestom.server.MinecraftServer;
 import net.minestom.server.event.GlobalEventHandler;
 import net.minestom.server.instance.InstanceContainer;
 import net.minestom.server.instance.InstanceManager;
 import net.minestom.server.instance.LightingChunk;
+import net.minestom.server.registry.DynamicRegistry.Key;
+import net.minestom.server.world.DimensionType;
+import net.pivipi.world.FancyDimension;
 import net.pivipi.world.SoccerGenerator;
 import net.pivipi.world.WorldConstraints;
 
@@ -17,7 +21,8 @@ public class Main {
         InstanceManager instanceManager = MinecraftServer.getInstanceManager();
         GlobalEventHandler globalEventHandler = MinecraftServer.getGlobalEventHandler();
 
-        InstanceContainer instanceContainer = instanceManager.createInstanceContainer();
+        Key<DimensionType> dimension = FancyDimension.create();
+        InstanceContainer instanceContainer = instanceManager.createInstanceContainer(dimension);
 
         SoccerGenerator generator = new SoccerGenerator();
         instanceContainer.setGenerator(generator);

src/main/java/net/pivipi/ball/Ball.java

@@ -13,7 +13,6 @@ public class Ball extends Entity {
     public Ball(Block block) {
         super(EntityType.FALLING_BLOCK); // not block display because its movement lags for some reason
 
-        this.setBoundingBox(0.625, 0.625, 0.625);
         this.setNoGravity(true);
         this.setGlowing(true);
         
@@ -34,7 +33,7 @@ public class Ball extends Entity {
 
         long delay = time - this.lastTick;
 
-        physics.applyPhysics();
+        physics.applyPhysics(delay / 1000.0);
 
         this.lastTick = time;
     }

src/main/java/net/pivipi/physics/Collision.java

@@ -1,9 +1,10 @@
 package net.pivipi.physics;
 
-import javax.swing.text.html.parser.Entity;
+import net.minestom.server.collision.BoundingBox;
-
+import net.minestom.server.collision.SweepResult;
-import net.kyori.adventure.text.BlockNBTComponent.Pos;
 import net.minestom.server.collision.VisibleSweepResult;
+import net.minestom.server.coordinate.Vec;
+import net.minestom.server.entity.Entity;
 import net.minestom.server.entity.Player;
 
 public class Collision {
@@ -14,7 +15,7 @@ public class Collision {
 	 * @param velocity the applied velocity
 	 * @return null if no collision
 	 */
-	public static VisibleSweepResult willCollideWithPlayer(Player player, Entity moving, Pos velocity) {
+	public static VisibleSweepResult willCollideWithPlayer(Player player, Entity moving, Vec velocity) {
 		return null; // TODO
 	}
 	
@@ -22,10 +23,11 @@ public class Collision {
 	 * 
 	 * @param groundY ground Y
 	 * @param moving the moving entity
-	 * @param velocity the applied velocity
 	 * @return null if no collision
 	 */
-	public static VisibleSweepResult willCollideWithGround(double groundY, Entity moving, Pos velocity) {
+	public static VisibleSweepResult willCollideWithGround(double groundY, Entity moving, Vec movement) {
-		return null; // TODO
+		SweepResult sweepResult = new SweepResult(1, 0, 0, 0, null, 0, 0, 0);
+		boolean collided = new BoundingBox(10, 10, 1).intersectBoxSwept(moving.getPosition(), movement, moving.getPosition().withY(groundY).sub(5, 0, 5), moving.getBoundingBox(), sweepResult);
+		return collided ? new VisibleSweepResult(sweepResult) : null;
 	}
 }

src/main/java/net/pivipi/physics/Physics.java

@@ -1,9 +1,14 @@
 package net.pivipi.physics;
 
+import net.minestom.server.collision.VisibleSweepResult;
+import net.minestom.server.coordinate.Vec;
 import net.minestom.server.entity.Entity;
 
 public class Physics {
 	private final double gravity = 9.8;
+	private final double bounciness = 1;
+	
+	private Vec velocity = new Vec(5, 0, 5);
 	
 	private final Entity entity;
 	
@@ -11,7 +16,16 @@ public class Physics {
 		this.entity = entity;
 	}
 	
-	public void applyPhysics() {
+	public void applyPhysics(double delta) {
+		velocity = velocity.sub(0, gravity * delta, 0);
 		
+		VisibleSweepResult result = Collision.willCollideWithGround(5, entity, velocity.mul(delta));
+		System.out.println(entity.hasCollision());
+		if (result != null) {
+			System.out.println(result.res);
+			velocity = velocity.mul(0, -bounciness, 0);
+		}
+		
+		entity.setVelocity(velocity);
 	}
 }

src/main/java/net/pivipi/world/FancyDimension.java

@@ -0,0 +1,18 @@
+package net.pivipi.world;
+
+import net.minestom.server.MinecraftServer;
+import net.minestom.server.registry.DynamicRegistry.Key;
+import net.minestom.server.utils.NamespaceID;
+import net.minestom.server.world.DimensionType;
+
+public class FancyDimension {
+	public static Key<DimensionType> create() {
+		DimensionType dimension = DimensionType.builder()
+				.ambientLight(1.0f)
+				.fixedTime(18000l)
+				.effects("minecraft:the_end")
+				.build();
+		
+		return MinecraftServer.getDimensionTypeRegistry().register(NamespaceID.from("fancy_dimension"), dimension);
+	}
+}

src/main/java/net/pivipi/world/SoccerGenerator.java

@@ -6,6 +6,7 @@ import net.minestom.server.instance.block.Block;
 import net.minestom.server.instance.generator.GenerationUnit;
 import net.minestom.server.instance.generator.Generator;
 import net.minestom.server.instance.generator.UnitModifier;
+import net.minestom.server.world.biome.Biome;
 
 public class SoccerGenerator implements Generator {
 
@@ -13,7 +14,10 @@ public class SoccerGenerator implements Generator {
     public void generate(@NotNull GenerationUnit unit) {
         UnitModifier modifier = unit.modifier();
 
-        modifier.fillHeight(1, 2, Block.GRASS_BLOCK);
+        modifier.fillBiome(Biome.SNOWY_PLAINS);
+        
+        modifier.fillHeight(1, 2, Block.COARSE_DIRT);
+        modifier.fill(unit.absoluteStart().withY(1).add(1, 0, 1), unit.absoluteEnd().withY(2), Block.GRASS_BLOCK);
     }
     
 }