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-How do you make a game with 9 people using arrow keys to move a Unit? (If you can, please send me a map with nine people using aroow keys)
Though I dont have a map at hand, what you do is detect when the player presses the arrow key, set a boolean variable with array size of 9 to True when its down (False on default), the index should be player number of (Triggering player). Now use another order to order thier unit-variable to move up/down etc. Then run that same trigger again checking if the key is held down. (Just add run this trigger checking conditions to the end) You should also check if another key is pressed. Say if you press up, it runs the Up trigger. So you would check if its holding the right, and move it to 45 degrees, no side keys - 90, left side key - 130. Also check when they press < > and if they hold up do nothing (Because the up trigger would do it). Get it?
-Please tell me a trigger that makes you pickup a weapon when you come across it.
Use the 'Unit within range', the range should be position of the item with size 300,300. Then remove the item (Or kill it for death effects, good with power-up models). Now use a trigger to give it to the hero (It should be automatically charged for it to work properly, for weapons this could add an ability, or just give it the item if you do that)
-Disable the player's mouse/clicking controls
Dont think this is possible... You can just have a trigger that detects when you give an order to far away, then order it to stop (Because the triggers shouldnt do more than 150 distance at a time)
-Make a unit Jump (Not Blink, actually Jump!)
Using shockwave, disable art and damage etc for a dummy spell. Now when you cast it (With triggers) have 'Unit starts the effect of an ability' as the event, 'Ability being cast equal to Jump(shockwave)' as condition, and for the actions heres what you do:
Actions:
Unit - Add Storm Crow to <Casting Unit>
Unit - Remove Storm Crow from <Casting Unit> ; Note, this will allow the unit to fly
Unit - Turn collision OFF for <Casting unit>
Unit - Issue <Casting unit> to <Right-click> to <Target position of ability being cast>
Animation - Change unit flying height of <Casting unit> to 250 at 500 (.5 seconds to reach the peak)
Wait for <Real - Current flying height of <Casting unit> equal to 250
Animation - Change unit flying height of <Casting unit> to 0 at 500
Unit - Turn collision for (Casting unit) on
-Shoot without clicking on anything, like in Azeroth Grand Prix racing game (I cannot understand what they are doing)
Base another dummy spell off Roar with no effects (Duration should be .1, and cooldown should be the cooldown of the weapon). When you cast use more triggers, and order the unit to cast Carrion swarm (Another ability you made that does the gunshot effects, damage art etc). Now you should shoot the carrion swarm as the bullet.
These should work, or at least get you started. Note this is all off the top of my head, so some might be spelt wrong etc...