Fixed position bug for teleport

Corrected the teleport placement, which was off by 0.5f resulting in the player being put into walls. Fixed a similar problem with the check of who should be teleported which was off by the same amount. Also, additional documentation, clean up, and reuse of an existing method (getting max floor height).

Author: NetherNarwhal

Dungeoneer/src/com/interrupt/dungeoneer/entities/spells/Teleport.java

@@ -9,11 +9,9 @@
 import com.interrupt.dungeoneer.entities.Door;
 import com.interrupt.dungeoneer.entities.DynamicLight;
 import com.interrupt.dungeoneer.entities.Entity;
-import com.interrupt.dungeoneer.entities.Monster;
 import com.interrupt.dungeoneer.entities.Mover;
 import com.interrupt.dungeoneer.entities.Particle;
 import com.interrupt.dungeoneer.entities.Player;
-import com.interrupt.dungeoneer.entities.PositionedSound;
 import com.interrupt.dungeoneer.entities.items.Weapon.DamageType;
 import com.interrupt.dungeoneer.entities.triggers.Trigger;
 import com.interrupt.dungeoneer.game.Game;
@@ -30,12 +28,13 @@ public Teleport(DamageType damageType) {
 		this.damageType = damageType;
 	}
 
+	/** Handles individual teleport (ex. casting a spell from a scroll). */
 	@Override
 	public void doCast(Entity owner, Vector3 direction, Vector3 position) {
-		Vector3 pos = new Vector3(owner.x, owner.y, owner.z);
 		teleport(owner, Game.rand.nextInt());
 	}
 
+	/** Handles teleport for every actor, including the player, within a certain radius (ex. stepping on a pressure plate trap). */
 	public void doCast(Vector3 pos, Vector3 direction) {
 		Level level = Game.GetLevel();
 
@@ -48,12 +47,16 @@ public void doCast(Vector3 pos, Vector3 direction) {
 		}
 
 		Player p = Game.instance.player;
-		if(Math.abs(p.x + 0.5f - pos.x) < 0.5f + p.collision.x && Math.abs(p.y + 0.5f - pos.y) < 0.5f + p.collision.y) {
+		if(Math.abs(p.x - pos.x) < 0.5f + p.collision.x && Math.abs(p.y - pos.y) < 0.5f + p.collision.y) {
 			teleport(p, seed);
 			p.history.teleported();
 		}
 	}
 
+	/**
+	 * Teleports the specified entity to a random location based on the provided seed number. Providing the same seed
+	 * will result in the same location. Any actor entity, such as a monster, already at that location will be killed.
+	 */
 	public void teleport(Entity e, int seed) {
 		Level level = Game.GetLevel();
 		if(level.dungeonLevel == 0) return;
@@ -67,32 +70,14 @@ public void teleport(Entity e, int seed) {
 			if(checkTile.CanSpawnHere()) {
 				e.x = checkX + 0.5f;
 				e.y = checkY + 0.5f;
-				
-				float height1 = checkTile.getFloorHeight(e.x - e.collision.x, e.y - e.collision.y);
-				float height2 = checkTile.getFloorHeight(e.x - e.collision.x, e.y + e.collision.y);
-				float height3 = checkTile.getFloorHeight(e.x + e.collision.x, e.y - e.collision.y);
-				float height4 = checkTile.getFloorHeight(e.x + e.collision.x, e.y + e.collision.y);
-				float max = Math.max(height4, Math.max(height3, Math.max(height1, height2)));
-				
-				e.z = max + 0.5f;
-				
-				if(e instanceof Player) {
-					e.x -= 0.5;
-					e.y -= 0.5;
-				}
-				
+				e.z = level.maxFloorHeight(e.x, e.y, 0, e.collision.x) + 0.5f; // Assumes collision.x and y are the same.
+
 				Entity toFrag = level.checkEntityCollision(e.x, e.y, e.z, e.collision, e);
-				if(toFrag != null && toFrag instanceof Actor) {
-					((Actor)toFrag).hp = 0;
+				if (toFrag == null || toFrag instanceof Actor) {
+					if (toFrag instanceof Actor) ((Actor)toFrag).hp = 0; // Kill an actor already in that position.
+					doCastEffect(new Vector3(e.x, e.y, e.z), level, e);
+					return;
 				}
-				else if(toFrag != null) {
-					// this didn't work out, try again
-					continue;
-				}
-
-				doCastEffect(new Vector3((float)checkX + 0.5f, (float)checkY + 0.5f, checkTile.floorHeight + 0.5f), level, e);
-				
-				return;
 			}
 		}
 	}