wip: start implementing GameLogic.checkRequest

src/main/java/uulm/teamname/marvelous/gamelibrary/entities/Character.java

@@ -42,6 +42,8 @@ public class Character extends Entity {
      */
     public Character(EntityID id, IntVector2 position, String name, int hp, int mp, int ap, int attackRange, int rangedDamage, int meleeDamage) {
         super(id, position);
+        solid = false;
+        opaque = true;
         this.name = name;
         this.hp = new Stat(StatType.HP, hp);
         this.mp = new Stat(StatType.MP, mp);

src/main/java/uulm/teamname/marvelous/gamelibrary/entities/Entity.java

@@ -7,6 +7,12 @@ public abstract class Entity {
     /** Whether or not the entity is currently active in the game */
     protected boolean active = true;
 
+    /** Whether or not the entity blocks movement */
+    protected boolean solid = false;
+
+    /** Whether or not the entity blocks vision */
+    protected boolean opaque = false;
+
     /** The position of the entity */
     protected IntVector2 position;
 
@@ -33,6 +39,14 @@ public abstract class Entity {
         return active;
     }
 
+    public boolean blocksMovement() {
+        return solid;
+    }
+
+    public boolean blocksVision() {
+        return opaque;
+    }
+
     public void setActive(boolean active) {
         this.active = active;
     }

src/main/java/uulm/teamname/marvelous/gamelibrary/entities/EntityID.java

@@ -27,6 +27,17 @@ public class EntityID {
         return type == other;
     }
 
+    @Override
+    public boolean equals(Object obj){
+        if(this == obj) return true;
+
+        if(!(obj instanceof EntityID)) return false;
+
+        EntityID other = (EntityID)obj;
+
+        return this.id == other.id && this.type == other.type;
+    }
+
     /**
      * Clones this entity id.
      * @return The cloned {@link EntityID}

src/main/java/uulm/teamname/marvelous/gamelibrary/entities/InfinityStone.java

@@ -15,6 +15,8 @@ public class InfinityStone extends Entity {
      */
     public InfinityStone(EntityID id, IntVector2 position, StoneType type) {
         super(id, position);
+        solid = false;
+        opaque = false;
         this.type = type;
     }
 

src/main/java/uulm/teamname/marvelous/gamelibrary/entities/NPC.java

@@ -17,6 +17,8 @@ public class NPC extends Entity {
      */
     public NPC(EntityID id, IntVector2 position, ArrayList<StoneType> inventory) {
         super(id, position);
+        solid = false;
+        opaque = true;
         this.inventory = new Inventory(inventory);
     }
 

src/main/java/uulm/teamname/marvelous/gamelibrary/entities/Rock.java

@@ -18,6 +18,8 @@ public class Rock extends Entity {
      */
     public Rock(EntityID id, IntVector2 position, int hp) {
         super(id, position);
+        solid = true;
+        opaque = true;
         this.maxHP = hp;
         this.hp = hp;
     }

src/main/java/uulm/teamname/marvelous/gamelibrary/gamelogic/EntityManager.java

@@ -1,7 +1,11 @@
 package uulm.teamname.marvelous.gamelibrary.gamelogic;
 
+import uulm.teamname.marvelous.gamelibrary.IntVector2;
 import uulm.teamname.marvelous.gamelibrary.entities.Entity;
+import uulm.teamname.marvelous.gamelibrary.entities.EntityID;
+import uulm.teamname.marvelous.gamelibrary.entities.EntityType;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Iterator;
@@ -53,6 +57,35 @@ public class EntityManager {
         return entities.remove(entity);
     }
 
+    /**
+     * Finds an entity with an {@link EntityID}.
+     * @param id The id to search for
+     * @return The found {@link Entity} or null if none found
+     */
+    public Entity findEntity(EntityID id) {
+        for(Entity entity: entities) {
+            if(entity.id == id) {
+                return entity;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Finds all entities with a position.
+     * @param pos The position to check on
+     * @return The found {@link Entity}s matching the position
+     */
+    public ArrayList<Entity> findByPosition(IntVector2 pos) {
+        ArrayList<Entity> found = new ArrayList<>();
+        for(Entity entity: entities) {
+            if(entity.getPosition() == pos) {
+                found.add(entity);
+            }
+        }
+        return found;
+    }
+
     /**
      * Iterates over all entities inside the list.
      * @return An iterator over every {@link Entity}

src/main/java/uulm/teamname/marvelous/gamelibrary/gamelogic/GameLogic.java

@@ -1,6 +1,8 @@
 package uulm.teamname.marvelous.gamelibrary.gamelogic;
 
 import uulm.teamname.marvelous.gamelibrary.Tuple;
+import uulm.teamname.marvelous.gamelibrary.entities.Entity;
+import uulm.teamname.marvelous.gamelibrary.entities.Character;
 import uulm.teamname.marvelous.gamelibrary.events.*;
 import uulm.teamname.marvelous.gamelibrary.requests.CharacterRequest;
 import uulm.teamname.marvelous.gamelibrary.requests.Request;
@@ -84,7 +86,145 @@ class GameLogic {
      * @return Whether or not the request is valid
      */
     public static boolean checkRequest(GameState state, Request request) {
-        //TODO: implement GameLogic.checkRequest
+        //TODO: refactor this using errors
+        try {
+            switch(request.type) {
+                case MeleeAttackRequest, RangedAttackRequest -> {
+                    CharacterRequest data = (CharacterRequest)request;
+
+                    Entity originEntity = state.entities.findEntity(data.originEntity);
+                    if(originEntity == null || originEntity.getPosition() != data.originField || !(originEntity instanceof Character)) {
+                        return false;
+                    }
+                    Character origin = (Character)originEntity;
+                    Entity targetEntity = state.entities.findEntity(data.targetEntity);
+                    if(targetEntity == null || targetEntity.getPosition() != data.targetField || !(targetEntity instanceof Character)) {
+                        return false;
+                    }
+                    Character target = (Character)targetEntity;
+
+                    if(origin.hp.getValue() <= 0 || !origin.isActive()) {
+                        return false;
+                    }
+                    if(origin.ap.getValue() < 1) {
+                        return false;
+                    }
+                    if(request.type == RequestType.MeleeAttackRequest && origin.meleeDamage != data.value) {
+                        return false;
+                    }else if(request.type == RequestType.RangedAttackRequest && origin.rangedDamage != data.value) {
+                        return false;
+                    }
+                    if(target.hp.getValue() <= 0 || !target.isActive()) {
+                        return false;
+                    }
+
+                    if(request.type == RequestType.RangedAttackRequest && origin.getPosition().distance(target.getPosition()) > origin.attackRange) {
+                        return false;
+                    }
+
+                    //TODO: check line of sight in GameLogic.checkRequest
+
+                    return true;
+                }
+                case MoveRequest -> {
+                    CharacterRequest data = (CharacterRequest)request;
+
+                    Entity originEntity = state.entities.findEntity(data.originEntity);
+                    if(originEntity == null || originEntity.getPosition() != data.originField || !(originEntity instanceof Character)) {
+                        return false;
+                    }
+                    Character origin = (Character)originEntity;
+
+                    if(data.targetField.getX() < 0 || data.targetField.getX() >= state.mapSize.getX() || data.targetField.getY() < 0 || data.targetField.getY() >= state.mapSize.getY()) {
+                        return false;
+                    }
+
+                    for(Entity entity: state.entities.findByPosition(data.targetField)) {
+                        if(entity.blocksMovement()) {
+                            return false;
+                        }
+                    }
+
+                    if(origin.hp.getValue() <= 0 || !origin.isActive()) {
+                        return false;
+                    }
+                    if(origin.mp.getValue() < 1) {
+                        return false;
+                    }
+
+                    return true;
+                }
+                case ExchangeInfinityStoneRequest -> {
+                    CharacterRequest data = (CharacterRequest)request;
+
+                    Entity originEntity = state.entities.findEntity(data.originEntity);
+                    if(originEntity == null || originEntity.getPosition() != data.originField || !(originEntity instanceof Character)) {
+                        return false;
+                    }
+                    Character origin = (Character)originEntity;
+                    Entity targetEntity = state.entities.findEntity(data.targetEntity);
+                    if(targetEntity == null || targetEntity.getPosition() != data.targetField || !(targetEntity instanceof Character)) {
+                        return false;
+                    }
+                    Character target = (Character)targetEntity;
+
+                    if(origin.hp.getValue() <= 0 || !origin.isActive()) {
+                        return false;
+                    }
+                    if(origin.ap.getValue() < 1) {
+                        return false;
+                    }
+                    if(target.hp.getValue() <= 0 || !target.isActive()) {
+                        return false;
+                    }
+
+                    if(!origin.inventory.hasStone(data.stoneType)) {
+                        return false;
+                    }
+
+                    return true;
+                }
+                case UseInfinityStoneRequest -> {
+                    CharacterRequest data = (CharacterRequest)request;
+
+                    Entity originEntity = state.entities.findEntity(data.originEntity);
+                    if(originEntity == null || originEntity.getPosition() != data.originField || !(originEntity instanceof Character)) {
+                        return false;
+                    }
+                    Character origin = (Character)originEntity;
+                    Entity targetEntity = state.entities.findEntity(data.targetEntity);
+                    if(targetEntity == null || targetEntity.getPosition() != data.targetField || !(targetEntity instanceof Character)) {
+                        return false;
+                    }
+                    Character target = (Character)targetEntity;
+
+                    if(origin.hp.getValue() <= 0 || !origin.isActive()) {
+                        return false;
+                    }
+                    if(origin.ap.getValue() < 1) {
+                        return false;
+                    }
+                    if(!target.isActive()) {
+                        return false;
+                    }
+
+                    if(!origin.inventory.hasStone(data.stoneType)) {
+                        return false;
+                    }
+
+                    return true;
+
+                }
+                case DisconnectRequest -> {
+                    //TODO: add check for DisconnectRequest in GameLogic.checkRequest
+
+                    return true;
+                }
+            }
+        }catch(Exception e) {
+            return false;
+        }
+
         return false;
     }