Gamemaker Studio 2 Gml -

GML looks up variables slowly. Use var for temporary variables.

// SLOW (looks up sprite_width 60 times per second)
repeat(100) 
    draw_sprite(spr_player, 0, x + sprite_width, y);
// FAST
var sw = sprite_width;
repeat(100) 
draw_sprite(spr_player, 0, x + sw, y);

You have the syntax. Now you need the knowledge library.

The syntax mirrors C/JavaScript closely. gamemaker studio 2 gml

// If statement
if (hp <= 0) 
    instance_destroy();
 else if (hp < 30) 
    audio_play_sound(snd_lowhealth, 0, false);
// For loop
for (var i = 0; i < 10; i++) 
draw_text(32, 32 + (i * 20), "Enemy " + string(i));

// With statement (a GML favorite)
with (obj_enemy) 
hp -= 10; // Reduces the HP of all enemies on screen

function Enemy(_name, _hp) constructor 
    name = _name;
    hp = _hp;
static take_damage = function(amount) 
    this.hp -= amount;
    if (this.hp <= 0) 
        show_debug_message(this.name + " dies!");


// Usage:
var goblin = new Enemy("Goblin", 50);
var troll = new Enemy("Troll", 120);
goblin.take_damage(30);

Create a new script in GMS2 and name it draw_deep_paper. Paste the following code:

/// @function draw_deep_paper(x, y, depth, facing_angle, sprite_index, image_index)
/// @description Draws a "deep" paper effect with simulated 3D thickness.
/// @param real _x The x position to draw at.
/// @param real _y The y position to draw at.
/// @param real _depth The pixel thickness of the paper.
/// @param real _angle The angle of the paper (0 = upright, rotates clockwise).
/// @param sprite _sprite The sprite to use for the top surface.
/// @param real _frame The frame index of the sprite.
function draw_deep_paper(_x, _y, _depth, _angle, _sprite, _frame)  GML looks up variables slowly
// 1. SETUP
// Calculate the offset based on angle.
// We use lengthdir to push the "back" face behind the "front" face.
var _dir = _angle + 90; // Adjust so 0 degrees is "up"
var _x_off = lengthdir_x(_depth, _dir);
var _y_off = lengthdir_y(_depth, _dir);
// Get sprite dimensions
var _w = sprite_get_width(_sprite);
var _h = sprite_get_height(_sprite);
var _xc = sprite_get_xoffset(_sprite);
var _yc = sprite_get_yoffset(_sprite);
// Define Colors
var _col_top = c_white;          // Top face color (tint)
var _col_edge = make_color_rgb(200, 200, 200); // Light grey for sides
var _col_bottom = make_color_rgb(150, 150, 150); // Darker grey for underneath
// 2. DRAW THE EDGES (The "Thickness")
// We use primitives to draw a band connecting the top and bottom faces.
draw_primitive_begin_texture(pr_trianglestrip, -1);
// We define 4 points. 
// Points 1 & 2 are on the "Bottom" face (pushed back).
// Points 3 & 4 are on the "Top" face (at position).
// Bottom-Left (Back)
draw_vertex_color(_x - _xc + _x_off, _y - _yc + _y_off, _col_edge, 1);
// Top-Left (Back)
draw_vertex_color(_x - _xc + _x_off, _y - _yc + _h + _y_off, _col_edge, 1);
// Bottom-Right (Front)
draw_vertex_color(_x - _xc + _w, _y - _yc, _col_edge, 1);
// Top-Right (Front)
draw_vertex_color(_x - _xc + _w, _y - _yc + _h, _col_edge, 1);
// Note: This simple primitive creates a solid block edge.
// For better visuals, we stop here and just draw a rectangle for the edge.
// GMS2 Primitives are tricky for simple rects, so let's use draw_rectangle for the side.
// Actually, let's just draw the "Side" as a parallelogram for simplicity.
// We will draw the right-side edge (the one visible if looking from top-right).
// If we assume light comes from top-left, the right edge should be visible.
// Let's simplify the logic for GMS2 beginners:
// We will draw a parallelogram connecting the top-right corner to the bottom-right corner.
draw_primitive_end(); // End the previous attempt to keep code clean
// Draw the connecting strip (The "Spine")
// This connects the bottom-right corner of the "back" to the "front"
draw_set_color(_col_edge);
draw_primitive_begin(pr_trianglefan);
    draw_vertex(_x - _xc + _w + _x_off, _y - _yc + _y_off); // BR Back
    draw_vertex(_x - _xc + _w, _y - _yc); // BR Front
    draw_vertex(_x - _xc + _w, _y - _yc + _h); // TR Front
    draw_vertex(_x - _xc + _w + _x_off, _y - _yc + _h + _y_off); // TR Back
draw_primitive_end();
// 3. DRAW THE BOTTOM FACE (The "Back")
// Draw the sprite slightly offset and darkened to simulate the back of the paper.
draw_set_color(_col_bottom);
draw_sprite_ext(_sprite, _frame, _x + _x_off, _y + _y_off, 1, 1, 0, _col_bottom, 1);
// 4. DRAW THE TOP FACE (The "Front")
// Draw the main sprite.
draw_set_color(_col_top);
draw_sprite_ext(_sprite, _frame, _x, _y, 1, 1, 0, _col_top, 1);

| Problem | Solution | |---------|----------| | Object not moving | Check if Step event exists and speed vars are applied | | Collisions jittery | Use place_meeting() + move_contact_all() | | Memory leaks | Destroy instances with instance_destroy(); remove data structures with ds_map_destroy() etc. | | Slow game | Avoid draw_text every step; use surfaces or culling |

// Array
inventory = ["sword", "shield", "potion"];
// Struct (like a dictionary/object)
player_data = 
name: "Kaelen",
level: 5,
stats:  str: 12, agi: 8 
;
 You have the syntax

// Around suspect code
var _time = current_time;
// ... your code ...
show_debug_message("Took: " + string(current_time - _time) + "ms");