/create
/// -----------------
/// MOVEMENT VARIABLES
/// -----------------
hsp = 0;
vsp = 0;

move_speed = 4;       // Max horizontal speed
accel = 0.5;          // Horizontal acceleration
friction = 0.3;       // Friction when no input

jump_speed = -10;      // Jump speed
grav = 0.5;            // Gravity

/// -----------------
/// DOUBLE JUMP / COYOTE TIME
/// -----------------
can_double_jump = true;
coyote_time_max = 6;  // Frames you can still jump after leaving floor
coyote_timer = 0;

/// -----------------
/// PARTICLE SYSTEM
psCloud = part_system_create();
partCloud = part_type_create();

// Use a circle shape instead of cloud
part_type_shape(partCloud, pt_shape_circle);

// Smaller size
part_type_size(partCloud, 0.2, 0.4, 0, 0);

// Speed & direction
part_type_speed(partCloud, 1, 2, 0, 0);
part_type_direction(partCloud, 0, 360, 0, 0);
part_type_gravity(partCloud, 0, 0);

// Life
part_type_life(partCloud, 20, 30);

// Opacity
part_type_alpha2(partCloud, 1, 0);

// ✅ Set color to white
part_type_color1(partCloud, c_white);

/// -----------------
/// RUNNING DUST PARTICLES
/// -----------------
psDust = part_system_create();
partDust = part_type_create();

// Shape
part_type_shape(partDust, pt_shape_circle);

// Tiny size
part_type_size(partDust, 0.1, 0.2, 0, 0);

// Speed (slightly to the sides)
part_type_speed(partDust, 0.5, 1, 0, 0);
part_type_direction(partDust, 160, 200, 0, 0); // mostly down/behind player

// Gravity (fall slightly)
part_type_gravity(partDust, 0.1, 270);

// Life
part_type_life(partDust, 15, 25);

// Fade out
part_type_alpha2(partDust, 1, 0);

// Color
part_type_color1(partDust, c_white);

//step
/// -----------------
/// HORIZONTAL INPUT + SMOOTH ACCELERATION
/// -----------------
var input = keyboard_check(ord("D")) - keyboard_check(ord("A"));

if (input != 0) {
    hsp += input * accel;          // accelerate
    if (hsp > move_speed) hsp = move_speed;
    if (hsp < -move_speed) hsp = -move_speed;
} else {
    // Apply friction
    if (hsp > 0) {
        hsp -= friction;
        if (hsp < 0) hsp = 0;
    } else if (hsp < 0) {
        hsp += friction;
        if (hsp > 0) hsp = 0;
    }
}

/// -----------------
/// HORIZONTAL MOVE
/// -----------------
x += hsp;

if (place_meeting(x, y, oFloor)) {
    x -= hsp;
    hsp = 0;
}

// Spawn running dust if moving and on floor
if (place_meeting(x, y + 1, oFloor) && hsp != 0) {
    // Start with center x
    var dust_x = x;

    // Offset dust behind player depending on movement direction
    if (hsp > 0) {
        dust_x = x - 4; // moving right → dust behind left
    } else if (hsp < 0) {
        dust_x = x + 4; // moving left → dust behind right
    }

    // Spawn dust at feet using bbox_bottom
    var dust_y = bbox_bottom;

    part_particles_create(psDust, dust_x, dust_y, partDust, 1);
}

/// -----------------
/// GRAVITY
/// -----------------
vsp += grav;

/// -----------------
/// COYOTE TIME & DOUBLE JUMP RESET
/// -----------------
if (place_meeting(x, y + 1, oFloor)) {
    coyote_timer = coyote_time_max;
    can_double_jump = true;
} else {
    coyote_timer -= 1;
}

/// -----------------
/// VERTICAL MOVE
/// -----------------
y += vsp;

if (place_meeting(x, y, oFloor)) {
    y -= vsp;
    vsp = 0;
}

/// -----------------
/// JUMP INPUT
/// -----------------
if (keyboard_check_pressed(vk_space)) {
    if (coyote_timer > 0) {
        // Regular jump
        vsp = jump_speed;
        coyote_timer = 0;
    } else if (can_double_jump) {
        // Double jump
        vsp = jump_speed;
        can_double_jump = false;

     // On double jump
part_particles_create(psCloud, x, y + sprite_height/2, partCloud, 10);

    }
}