x_spd = random_range(-3, 3);
y_spd = random_range(-15, -5);

image_angle = random(360);

restitution = 0.5; // 弹力系数

pickup_timer = 30; // 最快拾取时间（可选）

flash_duration = 0;
flash_timer = 0;
u_flash_alpha = shader_get_uniform(sh_flash, "f_alpha");