Input handling in NTT

These three

accept the following strings for buttons:

• nort: North/Up
• sout: South/Down
• west: West/Left
• east: East/Right
• fire: Button used for shooting (default: left mouse button)
• spec: Button used for active ability (default: right mouse button)
• swap: Button used to swap weapons (default: space; mouse wheel)
• prev: Mouse wheel up
• next: Mouse wheel down
• pick: Button used to pick up weapons (default: E)
• paus: Button used to pause the game (default: P; Esc)
• okay: Button used to confirm actions in menu (default: Enter)
• exit: Button used to close menus (default: Esc)
• horn: Button used for airhorn[.wav] (default: B)
• talk: Not an actual button - returns whether the player has chat open.
• key1 .. key9, key0: Pick N-th mutation
  The first 6 keys are also used for emotes in multiplayer.

So, for example, if you wanted to display a chat message whenever any player presses the airhorn button, you could do

with (Player) if (button_pressed(index, "horn")) {
    trace("P" + string(index + 1) + " pressed airhorn!");
}

You have your mouse_x and mouse_y variables, but these now accept a player index like view_ variables do.

So mouse_x[1] is the world-space coordinate for the second player.

For example, if you wanted to create an explosion at mouse coordinates whenever any player presses the airhorn button, you could do:

with (Player) if (button_pressed(index, "horn")) {
    instance_create(mouse_x[index], mouse_y[index], Explosion);
}

While mouse is locked, mouse_delta_x[player] and mouse_delta_y[player] indicate how much the mouse has moved since the previous frame.

The following variables and functions are the same as their non-suffixed counterparts, but aren't subject to synchronization/network latency, thus should only be used for display, else you may cause a desync. See Sync for more information.

For example, you could show the affected area for the above explosion snippet by doing something like the following in a explo.mod.ntgml:

function step() {
    with (Player) if (button_pressed(index, "horn")) {
        instance_create(mouse_x[index], mouse_y[index], Explosion);
    }
}
function draw() {
    draw_set_color(c_red);
    with (Player) if (player_is_local_nonsync(index)) {
        draw_circle(mouse_x_nonsync[index], mouse_y_nonsync[index], 16, 1);
    }
}