GameMaker Studio 2 - Player Map/Mini-map Example file

/// @description Set Up UI

//Variables
show_map = false;

selection = noone;

map_divider = 5;

mouse_x_gui = 0;
mouse_y_gui = 0;


//Make Surfaces
win_width = window_get_width();
win_height = window_get_height();

surface_width = win_height; //=
surface_height = win_height; //=

surface_margin_x = (win_width/2) - (surface_width/2);
surface_margin_y = (win_height/2) - (surface_height/2);

map_x = (surface_width/2);
map_y = (surface_height/2);

map_surface = surface_create(surface_width,surface_height); //Create surface


//Dragging Variables
dragging = false;

drag_x = 0; 
drag_y = 0;

drag_offset_x = 0;
drag_offset_y = 0;

////SMOOTH DRAG AND ZOOM\\\\

//Smooth Move
drag_move_x = 0;
drag_move_y = 0;


//Zoom
map_max_zoom = 20; //Max zoom level

/// @description Draw UI

if show_map {

/// DRAW MAP SURFACE \\\
surface_set_target(map_surface);


//Clear surface//
draw_clear(c_dkgray); //Background Colour - (Black works best most of the time);


//Draw grid//
draw_sprite_tiled(grid_sprite,0, map_x, map_y);


//Draw map objects\\
draw_map_object(player, c_white, true);

draw_map_object(friendly, c_lime, true);

draw_map_object(enemy, c_red, true);

draw_map_object(item, c_aqua, false);


//Reset Surface
surface_reset_target();


///DRAW UI\\\\

//Darken
draw_set_color(c_black); //Set colour
draw_set_alpha(0.4);     //Set transparency

draw_rectangle(0,0,win_width,win_height,false);

//Reset colour & transparency
draw_set_color(-1);
draw_set_alpha(1);

//Draw map surface
draw_surface(map_surface, surface_margin_x, surface_margin_y);

}

/// @description Math

if show_map = true {

//Update mouse to GUI position//
mouse_x_gui = device_mouse_x_to_gui(0);
mouse_y_gui = device_mouse_y_to_gui(0);


//Dragging//
if dragging = false and mouse_check_button(mb_left) {

//Set drag from point
drag_x = drag_offset_x + mouse_x_gui;
drag_y = drag_offset_y + mouse_y_gui;

dragging = true; //Start dragging
}

//Drag map view
if dragging = true {
drag_offset_x = drag_x - mouse_x_gui;
drag_offset_y = drag_y - mouse_y_gui;
}

if dragging = true and mouse_check_button_released(mb_left)  {
dragging = false; //Unset dragging
}


//Calculate the point on the map surface everything should be drawn relative to//
map_x = (surface_width/2) - (player.x/map_divider) - drag_offset_x;
map_y = (surface_height/2) - (player.y/map_divider) - drag_offset_y;

////SMOOTH DRAG AND ZOOM\\\\

///Smooth Move Drag\\\
var x_m = drag_offset_x;
var y_m = drag_offset_y;

var m_pd = point_distance(drag_move_x, drag_move_y, x_m ,y_m)/10;

var speed_m = m_pd;

var angle = point_direction(drag_move_x, drag_move_y, x_m ,y_m);
	
drag_move_x = drag_move_x + lengthdir_x(speed_m, angle);
drag_move_y = drag_move_y + lengthdir_y(speed_m, angle);



//Zoom Function//
if mouse_wheel_down() {	
if map_divider < map_max_zoom { map_divider += 0.1*map_divider; // Zoom Out
}}

if mouse_wheel_up() {	
if map_divider > 0.1 { map_divider -= 0.1*map_divider; // Zoom In
}}



//Calculate the point on the map surface everything should be drawn relative to//
map_x = (surface_width/2) - (player.x/map_divider) - drag_move_x;
map_y = (surface_height/2) - (player.y/map_divider) - drag_move_y;


}

/// @description Recreate Surfaces

//Recreate surfaces if they disappear//
if !surface_exists(map_surface) { map_surface = surface_create(surface_width,surface_height);}

show_map = !show_map;

/// @description Free map surface

if surface_exists(map_surface) { surface_free(map_surface);}

/// @description Deselect

selection = noone;

/// @description Reset View

dragging = false;

drag_offset_x = 0;
drag_offset_y = 0;

/// @description draw_map_object()

///@param obj		0
///@param colour	1
///@param ind		2


with argument0 {
	
var m_x = (x / UI.map_divider) + UI.map_x;
var m_y = (y / UI.map_divider) + UI.map_y;

var m_gui_x = UI.mouse_x_gui - UI.surface_margin_x;
var m_gui_y = UI.mouse_y_gui - UI.surface_margin_y;

var map_sprite = map_dot; //=

var p_in_circle = point_in_circle(m_gui_x, m_gui_y, m_x, m_y, sprite_get_width(map_sprite));

var mb_left_pressed = mouse_check_button_pressed(mb_left);

//Select object
if mb_left_pressed and p_in_circle {
UI.selection = self;
}
	
//Draw dot
draw_sprite_ext(map_sprite,0 ,m_x, m_y, 1,1, 0, argument1, 1);

//Draw Selector//
if UI.selection = self {
	
//Text
draw_set_halign(fa_center);
draw_set_valign(fa_bottom);
draw_text(m_x, m_y-20, name);
 
//Marker
draw_sprite(marker_sprite, 0, m_x, m_y);
}

//Draw indicator
if argument2 = true {
draw_sprite_ext(direction_sprite,0, m_x, m_y, 1,1, image_angle, argument1, 1);
}

}