MiauRizius/JGame2D
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added collision to NPCs

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Maurice
2025-11-28 17:21:35 +01:00
parent b294eb49c8
commit 1f614916b5
3 changed files with 98 additions and 0 deletions
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85
src/de/miaurizius/jgame2d/core/handlers/CollisionHandler.java
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@@ -106,4 +106,89 @@ public class CollisionHandler {
return index;
}
//NPC OR MONSTER COLLISION
public int checkEntity(Entity entity, Entity[] target) {
int index = 999;
int c = -1;
for(Entity e : target) {
c++;
if (e != null) {
entity.solidArea.x += entity.worldX;
entity.solidArea.y += entity.worldY;
e.solidArea.x += e.worldX;
e.solidArea.y += e.worldY;
switch (entity.direction) {
case UP:
entity.solidArea.y -= entity.speed;
if (entity.solidArea.intersects(e.solidArea)) {
entity.collisionOn = true;
index = c;
}
break;
case DOWN:
entity.solidArea.y += entity.speed;
if (entity.solidArea.intersects(e.solidArea)) {
entity.collisionOn = true;
index = c;
}
break;
case LEFT:
entity.solidArea.x -= entity.speed;
if (entity.solidArea.intersects(e.solidArea)) {
entity.collisionOn = true;
index = c;
}
break;
case RIGHT:
entity.solidArea.x += entity.speed;
if (entity.solidArea.intersects(e.solidArea)) {
entity.collisionOn = true;
index = c;
}
break;
}
entity.solidArea.x = entity.solidAreaDefaultX;
entity.solidArea.y = entity.solidAreaDefaultY;
e.solidArea.x = e.solidAreaDefaultX;
e.solidArea.y = e.solidAreaDefaultY;
}
}
return index;
}
public void checkPlayer(Entity entity) {
entity.solidArea.x += entity.worldX;
entity.solidArea.y += entity.worldY;
panel.player.solidArea.x += panel.player.worldX;
panel.player.solidArea.y += panel.player.worldY;
switch (entity.direction) {
case UP:
entity.solidArea.y -= entity.speed;
if (entity.solidArea.intersects(panel.player.solidArea)) entity.collisionOn = true;
break;
case DOWN:
entity.solidArea.y += entity.speed;
if (entity.solidArea.intersects(panel.player.solidArea)) entity.collisionOn = true;
break;
case LEFT:
entity.solidArea.x -= entity.speed;
if (entity.solidArea.intersects(panel.player.solidArea)) entity.collisionOn = true;
break;
case RIGHT:
entity.solidArea.x += entity.speed;
if (entity.solidArea.intersects(panel.player.solidArea)) entity.collisionOn = true;
break;
}
entity.solidArea.x = entity.solidAreaDefaultX;
entity.solidArea.y = entity.solidAreaDefaultY;
panel.player.solidArea.x = panel.player.solidAreaDefaultX;
panel.player.solidArea.y = panel.player.solidAreaDefaultY;
}
}

2
src/de/miaurizius/jgame2d/entity/Entity.java
View File

@@ -35,6 +35,8 @@ public class Entity {
setAction();
collisionOn = false;
panel.collisionH.checkTile(this);
panel.collisionH.checkObject(this, false);
panel.collisionH.checkPlayer(this);
if(!collisionOn) {
switch (direction) {

11
src/de/miaurizius/jgame2d/entity/Player.java
View File

@@ -62,9 +62,15 @@ public class Player extends Entity {
// CHECK TILE COLLISION
collisionOn = false;
panel.collisionH.checkTile(this);
// CHECK OBJECT COLLISION
int objIndex = panel.collisionH.checkObject(this, true);
pickObject(objIndex);
// CHECK ENTITY COLLISION
int npcIndex = panel.collisionH.checkEntity(this, panel.npc);
interactNPC(npcIndex);
if(!collisionOn) {
switch (direction) {
case UP -> worldY -= speed;
@@ -88,6 +94,11 @@ public class Player extends Entity {
}
public void interactNPC(int index) {
if(index == 999) return;
System.out.println("npc collision detected");
}
public void draw(Graphics2D graphics2d) {
BufferedImage image = switch (direction) {
case UP -> (spriteNum == 1) ? up1 : up2;