1. Kostas Anagnostou Game developer Adjunct Lecturer in Videogame Technologies

18. Levels of Data driven development

23. Hierarchical structure of XML files Level.xml spritesheets.xml animations.xml spawners.xml bonuses.xml enemies.xml explosions.xml

25. Sample XML definitions layout <?xml version=&quot;1.0&quot;?> <spawners> <spawner type=&quot;S1LNKamikazeeHunterChase&quot; enemytype=&quot;Kamikazee_Hunter&quot; spawn=&quot;Chase&quot; animation=“ ZigZag&quot; number=&quot;6&quot; rate=&quot;2&quot; bonus=&quot;Invisibility&quot;> </spawner> </spawners> <?xml version=&quot;1.0&quot;?> <enemies> <enemy type=&quot;Kamikazee_Hunter&quot;> <parts> <part sprite=&quot;alien_kamikazee_hunter“ shield=&quot;1&quot; weapon=&quot;EnemyKamikazee1&quot; explosion=&quot;MediumExplosion&quot;> </part> </parts> </enemy> </enemies> <?xml version=&quot;1.0&quot;?> <spritesheets> <spritesheet name=&quot;spritesheet_normal.png&quot;> <sprite name=&quot;alien_kamikazee_hunter&quot;> <frames interval=&quot;0.3&quot;> <frame x=&quot;432&quot; y=&quot;96&quot; w=&quot;48&quot; h=&quot;48&quot;></frame> <frame x=&quot;0&quot; y=&quot;144&quot; w=&quot;48&quot; h=&quot;48&quot;></frame> </frames> </sprite> </spritesheet> </spritesheets> <?xml version=&quot;1.0&quot;?> <animations> <animation name=&quot;SPath&quot; type=&quot;Bezier&quot; track=&quot;Player&quot;> <parts count=“3&quot;> <part p0=&quot;0 0&quot; p1=&quot;1 0&quot; p2=&quot;1 -0.25&quot; p3=&quot;0 -0.25&quot; duration=&quot;3&quot;></part> <part p0=&quot;0 0&quot; p1=&quot;-1 0&quot; p2=&quot;-1 -0.25&quot; p3=&quot;0 -0.25&quot; duration=&quot;3&quot;></part> <part p0=&quot;0 0&quot; p1=&quot;1 0&quot; p2=&quot;1 -0.25&quot; p3=&quot;0 -0.25&quot; duration=&quot;3&quot;></part> </parts> </animation> </animations>

26. Sample XML definitions layout <?xml version=&quot;1.0&quot;?> <spawners> <spawner type=&quot;S1LNKamikazeeHunterChase&quot; enemytype=&quot;Kamikazee_Hunter&quot; spawn=&quot;Chase&quot; animation=“ SPath&quot; number=&quot;6&quot; rate=&quot;2&quot; bonus=&quot;Invisibility&quot;> </spawner> </spawners> <?xml version=&quot;1.0&quot;?> <enemies> <enemy type=&quot;Kamikazee_Hunter&quot;> <parts> <part sprite=&quot;alien_kamikazee_hunter“ shield=&quot;1&quot; weapon=&quot;EnemyKamikazee1&quot; explosion=&quot;MediumExplosion&quot;> </part> </parts> </enemy> </enemies> <?xml version=&quot;1.0&quot;?> <spritesheets> <spritesheet name=&quot;spritesheet_normal.png&quot;> <sprite name=&quot;alien_kamikazee_hunter&quot;> <frames interval=&quot;0.3&quot;> <frame x=&quot;432&quot; y=&quot;96&quot; w=&quot;48&quot; h=&quot;48&quot;></frame> <frame x=&quot;0&quot; y=&quot;144&quot; w=&quot;48&quot; h=&quot;48&quot;></frame> </frames> </sprite> </spritesheet> </spritesheets> <?xml version=&quot;1.0&quot;?> <animations> <animation name=&quot;SPath&quot; type=&quot;Bezier&quot; track=&quot;Player&quot;> <parts count=“3&quot;> <part p0=&quot;0 0&quot; p1=&quot;1 0&quot; p2=&quot;1 -0.25&quot; p3=&quot;0 -0.25&quot; duration=&quot;3&quot;></part> <part p0=&quot;0 0&quot; p1=&quot;-1 0&quot; p2=&quot;-1 -0.25&quot; p3=&quot;0 -0.25&quot; duration=&quot;3&quot;></part> <part p0=&quot;0 0&quot; p1=&quot;1 0&quot; p2=&quot;1 -0.25&quot; p3=&quot;0 -0.25&quot; duration=&quot;3&quot;></part> </parts> </animation> </animations>

27. Game data specification

28. Game data specification