action beginner function game-physics gml graphics room sprite tutorial variable

action alarm alpha animation array background basic beginner caption check collision color control create damage data data-structure data-type direction draw drawing easy error event extension faq file force function game game-maker game-physics genre global-variable gml graphics gravity health horizontal how-to ide image index input instance interface keyboard level make mario math mouse movement multiplayer novice number object online platform-game player-control point pop-up position primitive pro projectile random real resource room round rpg score script set shape simple size speed sprite stat statistics step string subimage text timer timing title tool transparency tut tutorial variable vertical view width wiki-list window y