Old Style Game Framework how to...

Old Style Game Framework How To..

Creating a Game with Old Style Game Framework.

This walk through create a side scroller game, where the player runs across the screen and jumps over obstacles. The walk through uses the Old Style Game Framework (1.0.2), Game Doc (1.2.3) and Game Designer (1.2.2).

Updated versions: Old Style Framework (1.1), Game Doc (1.3) and Game Designer (1.3)

001 package org.deken.sidescroller.sprites;
002
003 import java.awt.Graphics2D;
004 import org.deken.game.map.MapElement;
005 import org.deken.game.map.MapSize;
006 import org.deken.game.sprites.BaseActor;
007 import org.deken.game.sprites.Sprite;
008 import org.deken.game.sprites.SpriteSize;
009 import org.deken.sidescroller.AdventureMap;
010 import org.deken.sidescroller.movement.JumpMovement;
011
012 /**
013  * <p>
014  * Title: Jumper</p>
015  *
016  * <p>
017  * Description: </p>
018  *
019  * Copyright: Copyright (c) Jul 29, 2014
020  *
021  * @author Gary Deken <gary@abberkeep.us>
022  * @version 1.0
023  */
024 public class Jumper extends BaseActor {
025    private AdventureMap playMap;
026    private static final int MOTION_RUN = 0;
027    private static final int MOTION_JUMP = 1;
028    private boolean active = true;
029
030    public Jumper(SpriteSize size) {
031       super(size);
032    }
033
034    @Override
035    public BaseActor copy() {
036       Jumper newJumper = new Jumper(size.copy());
037       copyBase(newJumper);
038       return newJumper;
039    }
040
041    @Override
042    public void draw(Graphics2D graphics, int xOffset, int yOffset) {
043       if (((JumpMovement) movement).isJumping() || ((JumpMovement) movement).isFalling()) {
044          int x = (int) Math.round(getXLocation()) + xOffset;
045          int y = (int) Math.round(getYLocation()) + yOffset;
046          moveMotion[1].draw(graphics, x, y);
047       }
048       else {
049          super.draw(graphics, xOffset, yOffset);
050       }
051    }
052
053    public void setActive(boolean active) {
054       this.active = active;
055       ((JumpMovement) movement).setActive(active);
056    }
057
058    public void setPlayMap(AdventureMap playMap) {
059       this.playMap = playMap;
060    }
061
062    @Override
063    public void update(long elaspeTime) {
064       if (active) {
065          if (! ((JumpMovement) movement).isAirBorne()) {
069             moveMotion[MOTION_JUMP].setDirection(movement.getDirection());
070             // if the player is not jumping check if tile below him.
071             if (isNoTileBelow()) {
072                ((JumpMovement) movement).setFalling(true);
073             }
074          }
075          super.update(elaspeTime);
076       }
077    }
078
079    @Override
080    protected void updateCurrentMotion() {
081       if (((JumpMovement) movement).isAirBorne()) {
082          currentMoveMotion = MOTION_JUMP;
083       }
084       else {
085          currentMoveMotion = MOTION_RUN;
086       }
087    }
088
089    private boolean isNoTileBelow() {
090       MapSize mapSize = playMap.getMapSize();
091       // player is two tiles tall.
092       int yTile = mapSize.getYTileFromPixels(getLocation().y) + 1;
093       int xTile = mapSize.getXTileFromPixels(getLocation().x);
094       MapElement mapEl = playMap.getTile(xTile, yTile + 1, 0);
095       if (mapEl == null) {
096          mapEl = playMap.getTile(xTile + 1, yTile + 1, 0);
097          if (mapEl == null) {
098             mapEl = playMap.getTile(xTile + 2, yTile + 1, 0);
099          }
100       }
101       return mapEl == null;
102    }
103
104    @Override
105    protected void spriteCollison(Sprite collideSprite) {
106       if (collideSprite instanceof FireBall) {
107          FireBall fireBall = (FireBall) collideSprite;
108          fireBall.setMissed(false);
109       }
111    }
112
113 }

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