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feat: Multiplayer (#3)

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Reviewed-on: https://gitea.local.jzitnik.dev/jzitnik/game/pulls/3
Co-authored-by: jzitnik-dev <email@jzitnik.dev>
Co-committed-by: jzitnik-dev <email@jzitnik.dev>
This commit is contained in:
Jakub Žitník
2026-02-04 10:37:41 +00:00
parent b72ac87098
commit 56716b3f06
254 changed files with 3776 additions and 1197 deletions
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39
common/.gitignore vendored Normal file
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target/
!.mvn/wrapper/maven-wrapper.jar
!**/src/main/**/target/
!**/src/test/**/target/
.kotlin
### IntelliJ IDEA ###
.idea/modules.xml
.idea/jarRepositories.xml
.idea/compiler.xml
.idea/libraries/
*.iws
*.iml
*.ipr
### Eclipse ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
build/
!**/src/main/**/build/
!**/src/test/**/build/
### VS Code ###
.vscode/
### Mac OS ###
.DS_Store

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common/.idea/.gitignore generated vendored Normal file
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# Default ignored files
/shelf/
/workspace.xml

7
common/.idea/encodings.xml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="Encoding">
<file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
</component>
</project>

14
common/.idea/misc.xml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ExternalStorageConfigurationManager" enabled="true" />
<component name="MavenProjectsManager">
<option name="originalFiles">
<list>
<option value="$PROJECT_DIR$/pom.xml" />
</list>
</option>
</component>
<component name="ProjectRootManager" version="2" languageLevel="JDK_25" default="true" project-jdk-name="openjdk-25" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/out" />
</component>
</project>

6
common/.idea/vcs.xml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="$PROJECT_DIR$" vcs="Git" />
</component>
</project>

63
common/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>cz.jzitnik</groupId>
<artifactId>game-parent</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>common</artifactId>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.11.0</version>
<configuration>
<annotationProcessorPaths>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.42</version>
</path>
</annotationProcessorPaths>
<source>25</source>
<target>25</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>tools.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>3.0.4</version>
</dependency>
<dependency>
<groupId>tools.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-yaml</artifactId>
<version>3.0.4</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.42</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>2.0.17</version>
</dependency>
</dependencies>
</project>

5
common/src/main/java/cz/jzitnik/common/Config.java Normal file
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package cz.jzitnik.common;
public class Config {
public static final int WORLD_PASSWORD_LENGTH = 5;
}

69
common/src/main/java/cz/jzitnik/common/models/coordinates/RoomCords.java Normal file
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package cz.jzitnik.common.models.coordinates;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.Getter;
import lombok.ToString;
import lombok.extern.slf4j.Slf4j;
import java.io.Serializable;
import java.util.List;
@Slf4j
@ToString
@Getter
public class RoomCords implements Cloneable, Serializable {
private int x;
private int y;
@JsonCreator
public RoomCords(
@JsonProperty("x") int x,
@JsonProperty("y") int y
) {
updateCords(x, y);
}
public void updateCords(int x, int y) {
this.x = x;
this.y = y;
}
public void updateCords(RoomCords roomCords) {
updateCords(roomCords.getX(), roomCords.getY());
}
public void updateCordsWithColliders(List<RoomPart> colliders, int x, int y, RoomPart playerCollider) {
var normalizedPlayerCollider = new RoomPart(
new RoomCords(playerCollider.getStart().getX() + x, playerCollider.getStart().getY() + y),
new RoomCords(playerCollider.getEnd().getX() + x, playerCollider.getEnd().getY() + y)
);
if (colliders.stream().anyMatch(collider -> collider.isOverlapping(normalizedPlayerCollider))) {
return;
}
updateCords(x, y);
}
@Override
public RoomCords clone() {
try {
return (RoomCords) super.clone();
} catch (CloneNotSupportedException e) {
throw new AssertionError();
}
}
/**
* Calculates the Euclidean distance between this coordinate and another.
*
* @param other The other RoomCords instance
* @return The distance as a double
*/
public double calculateDistance(RoomCords other) {
if (other == null) {
throw new IllegalArgumentException("Cannot calculate distance to null");
}
return Math.hypot(this.x - other.x, this.y - other.y);
}
}

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common/src/main/java/cz/jzitnik/common/models/coordinates/RoomPart.java Normal file
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package cz.jzitnik.common.models.coordinates;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.Data;
import lombok.ToString;
import java.io.Serializable;
@Data
@ToString
public class RoomPart implements Serializable {
private RoomCords start;
private RoomCords end;
@JsonCreator
public RoomPart(
@JsonProperty("start") RoomCords start,
@JsonProperty("end") RoomCords end
) {
this.start = start;
this.end = end;
}
public boolean isWithin(RoomCords cords) {
return cords.getX() >= start.getX() &&
cords.getX() <= end.getX() &&
cords.getY() >= start.getY() &&
cords.getY() <= end.getY();
}
/**
* Checks if this GameRoomPart overlaps with another.
*/
public boolean isOverlapping(RoomPart other) {
return start.getX() <= other.getEnd().getX() &&
end.getX() >= other.getStart().getX() &&
start.getY() <= other.getEnd().getY() &&
end.getY() >= other.getStart().getY();
}
}

27
common/src/main/java/cz/jzitnik/common/models/player/PlayerCreation.java Normal file
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package cz.jzitnik.common.models.player;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import cz.jzitnik.common.models.coordinates.RoomCords;
import cz.jzitnik.common.models.coordinates.RoomPart;
import lombok.Getter;
import lombok.Setter;
import java.io.Serializable;
@Getter
public final class PlayerCreation implements Serializable {
@Setter
private int id;
private final RoomCords playerCords;
private final RoomPart collider;
@JsonCreator
public PlayerCreation(
@JsonProperty("playerCords") RoomCords playerCords,
@JsonProperty("collider") RoomPart collider
) {
this.playerCords = playerCords;
this.collider = collider;
}
}

6
common/src/main/java/cz/jzitnik/common/socket/SocketMessage.java Normal file
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package cz.jzitnik.common.socket;
import java.io.Serializable;
public interface SocketMessage extends Serializable {
}

6
common/src/main/java/cz/jzitnik/common/socket/messages/Test.java Normal file
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package cz.jzitnik.common.socket.messages;
import cz.jzitnik.common.socket.SocketMessage;
public class Test implements SocketMessage {
}

6
common/src/main/java/cz/jzitnik/common/socket/messages/game/connection/ConnectToAGame.java Normal file
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package cz.jzitnik.common.socket.messages.game.connection;
import cz.jzitnik.common.socket.SocketMessage;
public record ConnectToAGame(String gamePass) implements SocketMessage {
}

25
common/src/main/java/cz/jzitnik/common/socket/messages/game/connection/ConnectToAGameResponse.java Normal file
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package cz.jzitnik.common.socket.messages.game.connection;
import cz.jzitnik.common.models.player.PlayerCreation;
import cz.jzitnik.common.socket.SocketMessage;
import java.util.List;
public record ConnectToAGameResponse(ResponseType responseType, PlayerCreation playerCreation, List<PlayerCreation> existingPlayers) implements SocketMessage {
private enum ResponseType {
GAME_DOES_NOT_EXIST,
SUCCESS
}
public ConnectToAGameResponse() {
this(ResponseType.GAME_DOES_NOT_EXIST, null, null);
}
public ConnectToAGameResponse(PlayerCreation playerCreation, List<PlayerCreation> existingPlayers) {
this(ResponseType.SUCCESS, playerCreation, existingPlayers);
}
public boolean success() {
return responseType == ResponseType.SUCCESS;
}
}

6
common/src/main/java/cz/jzitnik/common/socket/messages/game/creation/CreateGame.java Normal file
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package cz.jzitnik.common.socket.messages.game.creation;
import cz.jzitnik.common.socket.SocketMessage;
public class CreateGame implements SocketMessage {
}

13
common/src/main/java/cz/jzitnik/common/socket/messages/game/creation/CreateGameResponse.java Normal file
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package cz.jzitnik.common.socket.messages.game.creation;
import cz.jzitnik.common.models.player.PlayerCreation;
import cz.jzitnik.common.socket.SocketMessage;
import lombok.AllArgsConstructor;
import lombok.Getter;
@Getter
@AllArgsConstructor
public class CreateGameResponse implements SocketMessage {
private final String gamePassword;
private final PlayerCreation ownerPlayer;
}

9
common/src/main/java/cz/jzitnik/common/socket/messages/items/ItemTookFromChest.java Normal file
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package cz.jzitnik.common.socket.messages.items;
import cz.jzitnik.common.socket.SocketMessage;
public record ItemTookFromChest(
String roomId, // For faster lookup i guess
int id
) implements SocketMessage {
}

8
common/src/main/java/cz/jzitnik/common/socket/messages/player/PlayerArrivalChange.java Normal file
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package cz.jzitnik.common.socket.messages.player;
import cz.jzitnik.common.models.coordinates.RoomCords;
import cz.jzitnik.common.socket.SocketMessage;
public record PlayerArrivalChange(int id, RoomCords playerCords, PlayerRotation playerRotation,
boolean arrived, boolean rerender) implements SocketMessage {
}

6
common/src/main/java/cz/jzitnik/common/socket/messages/player/PlayerDisconnected.java Normal file
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package cz.jzitnik.common.socket.messages.player;
import cz.jzitnik.common.socket.SocketMessage;
public record PlayerDisconnected(int playerId) implements SocketMessage {
}

7
common/src/main/java/cz/jzitnik/common/socket/messages/player/PlayerJoined.java Normal file
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package cz.jzitnik.common.socket.messages.player;
import cz.jzitnik.common.models.player.PlayerCreation;
import cz.jzitnik.common.socket.SocketMessage;
public record PlayerJoined(PlayerCreation playerCreation) implements SocketMessage {
}

7
common/src/main/java/cz/jzitnik/common/socket/messages/player/PlayerMove.java Normal file
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package cz.jzitnik.common.socket.messages.player;
import cz.jzitnik.common.models.coordinates.RoomCords;
import cz.jzitnik.common.socket.SocketMessage;
public record PlayerMove(RoomCords newCords, PlayerRotation playerRotation) implements SocketMessage {
}

14
common/src/main/java/cz/jzitnik/common/socket/messages/player/PlayerMovedInUrRoom.java Normal file
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package cz.jzitnik.common.socket.messages.player;
import cz.jzitnik.common.models.coordinates.RoomCords;
import cz.jzitnik.common.socket.SocketMessage;
import lombok.AllArgsConstructor;
import lombok.Getter;
@Getter
@AllArgsConstructor
public class PlayerMovedInUrRoom implements SocketMessage {
private int playerId;
private RoomCords cords;
private PlayerRotation playerRotation;
}

5
common/src/main/java/cz/jzitnik/common/socket/messages/player/PlayerRotation.java Normal file
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package cz.jzitnik.common.socket.messages.player;
public enum PlayerRotation {
FRONT, BACK, LEFT, RIGHT
}

8
common/src/main/java/cz/jzitnik/common/socket/messages/room/MovePlayerRoom.java Normal file
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package cz.jzitnik.common.socket.messages.room;
import cz.jzitnik.common.models.coordinates.RoomCords;
import cz.jzitnik.common.socket.SocketMessage;
public record MovePlayerRoom(String newRoomId, RoomCords oldCords, RoomCords newCords) implements SocketMessage {
}

22
common/src/main/java/cz/jzitnik/common/socket/messages/room/MovePlayerRoomResponse.java Normal file
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package cz.jzitnik.common.socket.messages.room;
import cz.jzitnik.common.models.coordinates.RoomCords;
import cz.jzitnik.common.socket.SocketMessage;
import cz.jzitnik.common.socket.messages.player.PlayerRotation;
import java.io.Serializable;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
public record MovePlayerRoomResponse(Set<Registry> players) implements SocketMessage {
public record Registry(int id, RoomCords cords, PlayerRotation playerRotation) implements Serializable {}
public Optional<Registry> getById(int id) {
return players.stream().filter(registry -> registry.id == id).findFirst();
}
public Set<Integer> getIds() {
return players.stream().map(Registry::id).collect(Collectors.toSet());
}
}