OK, so I'm working on this game that is like space invaders but with two players. They way someone wins the game is by destroying all of the aliens on screen and and the person with the most points wins. My problem is that I don't know how to transition to a different room after all the aliens are gone and determine who the winner is. I appreciate any help I can get. Thanks! (By the way, I'm using Game Maker 8.1.)

I'm not a real coder, but I'd say global variables and room_goto should solve your issue.

[quote="Auction Lemon"]OK, so I'm working on this game that is like space invaders but with two players. They way someone wins the game is by destroying all of the aliens on screen and and the person with the most points wins. My problem is that I don't know how to transition to a different room after all the aliens are gone and determine who the winner is. I appreciate any help I can get. Thanks! (By the way, I'm using Game Maker 8.1.)[/quote] It sounds like you need the variables for player points to be global. By appending "global." to a variable, you are creating a global variable. Global variables will retain their values for the entire life of the game, regardless of room. so basically what you want is something like this: [code]global.playerOneScore = 0; global.playerTwoScore = 0;[/code] do this when your gameplay starts and then when you move to another room, you can still reference them. Just add to the values as P1 and P2 gather points. Let me know if you need any clarification on anything.

[quote="Syaxamaphone"][quote="Auction Lemon"]OK, so I'm working on this game that is like space invaders but with two players. They way someone wins the game is by destroying all of the aliens on screen and and the person with the most points wins. My problem is that I don't know how to transition to a different room after all the aliens are gone and determine who the winner is. I appreciate any help I can get. Thanks! (By the way, I'm using Game Maker 8.1.)[/quote] It sounds like you need the variables for player points to be global. By appending "global." to a variable, you are creating a global variable. Global variables will retain their values for the entire life of the game, regardless of room. so basically what you want is something like this: [code]global.playerOneScore = 0; global.playerTwoScore = 0;[/code] do this when your gameplay starts and then when you move to another room, you can still reference them. Just add to the values as P1 and P2 gather points. Let me know if you need any clarification on anything.[/quote] I got that part down, but I can't figure out how to move to a different room after all the enemies on the screen are gone.

[quote="Auction Lemon"]I got that part down, but I can't figure out how to move to a different room after all the enemies on the screen are gone.[/quote][syntax=gml]if (!instance_exists(par_enemy)) { room_goto(your_room); }[/syntax] Every enemy needs to inherit from an object called par_enemy. Replace your_room with the name of the room you want to go to.

[quote="DJ Coco"][quote="Auction Lemon"]I got that part down, but I can't figure out how to move to a different room after all the enemies on the screen are gone.[/quote][syntax=gml]if (!instance_exists(par_enemy)) { room_goto(your_room); }[/syntax] Every enemy needs to inherit from an object called par_enemy. Replace your_room with the name of the room you want to go to.[/quote] I have tried your code, but it doesn't seem to work for some reason.

What's the problem? Are you getting any error messages? Please post them here so we can help you further.

You have to create a par_enemy object that's used as a parent for all enemy objects. To compare the scores you need a code like "if global.playerOneScore > global.playerTwoScore"

[quote="DJ Coco"]What's the problem? Are you getting any error messages? Please post them here so we can help you further.[/quote] After getting rid of all the enemies, it won't transition to the next room and just leaves me hanging in the same room without anymore enemies to shoot or determining who the winner is.

Then you're misunderstanding the solution DJ Coco provided. Are the player team objects and the enemy team objects under the same parent? If so, then you'll have to iterate through every instance of them with a for loop and check if all of them attributed to one team are nonexistent before executing room_goto(). If you want to be told precisely the code you need to use and exactly where it needs to be implemented, then you're gonna have to send the source so somebody can fix it for you.

[quote="Auction Lemon"][quote="DJ Coco"]What's the problem? Are you getting any error messages? Please post them here so we can help you further.[/quote] After getting rid of all the enemies, it won't transition to the next room and just leaves me hanging in the same room without anymore enemies to shoot or determining who the winner is.[/quote]Are you sure there is no instance of par_enemy left? As long as any object inheriting from par_enemy (or par_enemy itself) still exists within the room, the code will not trigger. You could debug it like this: [syntax=gml]if (keyboard_check_pressed(vk_space)) { with (par_enemy) { show_message(object_get_name(object_index)); } }[/syntax] Whenever you press space each instance will show a message a name of its name (like obj_goomba, for instance) so you can check which instances are still left in the room. If you accidentally might have wrong enemies inheriting from par_enemy you can check so by opening par_enemy and looking at its children in the object editor.