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foreach() loop implementation for GameMaker 2.3 for arrays, ds_lists, ds_maps, ds_stacks, ds_queues, ds_priorities and structs
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KeeVeeGames/foreach.gml
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It is aforeach() loop implementation for GameMaker: Studio 2.3+ for arrays, ds_lists, ds_maps, ds_stacks, ds_queues, ds_priorities and structs.
Note: queue-type data structures such as stacks, queues, and priorities will be empty after full foreach pass.
The general syntax is:
foreach(collectionas(item){// do things with item});
You also can receive additional parameters such as iteration index, key for map, priority for priority queue, and property name for a struct, specifying it insideas keyword brackets after item var.
Get the latest asset package from thereleases page. Import it into IDE.
Alternatively copy the code from corresponding scripts into your project.
varapples=["red","green","yellow","mac","forbidden"];foreach(applesas(apple,i){show_debug_message(string(i)+": "+apple);});
Output:
0: red1: green2: yellow3: mac4: forbiddenvarapples={red :"delicious",green :"eww",yellow :"yum"};foreach_struct(applesas(taste,color){show_debug_message(color+" is "+taste);});
Output:
yellow is yumred is deliciousgreen is ewwvarapples=ds_list_create();ds_list_add(apples,"red","green","yellow","mac","forbidden");foreach_list(applesas(apple,i){show_debug_message(string(i)+": "+apple);});
Output:
0: red1: green2: yellow3: mac4: forbiddenvarapples=ds_map_create();ds_map_add(apples,"red","delicious");ds_map_add(apples,"green","eww");ds_map_add(apples,"yellow","yum");foreach_map(applesas(taste,color){show_debug_message(color+" is "+taste);});
Output:
yellow is yumred is deliciousgreen is ewwvarapples=ds_stack_create();ds_stack_push(apples,"red","green","yellow","mac","forbidden");foreach_stack(applesas(apple,i){show_debug_message(string(i)+": "+apple);});
Output:
0: forbidden1: mac2: yellow3: green4: redvarapples=ds_queue_create();ds_queue_enqueue(apples,"red","green","yellow","mac","forbidden");foreach_queue(applesas(apple,i){show_debug_message(string(i)+": "+apple);});
Output:
0: red1: green2: yellow3: mac4: forbiddenvarapples=ds_priority_create();ds_priority_add(apples,"red",10);ds_priority_add(apples,"green",30);ds_priority_add(apples,"yellow",20);foreach_priority(applesas(apple,priority){show_debug_message(string(priority)+": "+apple);});
Output:
30: green20: yellow10: redYou can addbreakeach keyword in that foreach with a hacky modification, but it's not recommended as a foreach loop is not intended to be breakable.
#macrobreakeachbreakme[@0]=true;functionforeach(array,func){varbreakme=array_create(1);breakme[0]=false;varsize=array_length(array);for(vari=0;i<size;i++){if(breakme[0]==true)break;varelement=array[i];func(element,i,breakme);}}varapples=["red","green","yellow","mac","forbidden"];foreach(applesas(apple,i,breakme){show_debug_message(apple);if(i==2)breakeach;});
Nikita Musatov -MusNik / KeeVee Games
License:MIT
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foreach() loop implementation for GameMaker 2.3 for arrays, ds_lists, ds_maps, ds_stacks, ds_queues, ds_priorities and structs