Boss Battles Script — Undertale

function ron_attack() switch(phase) case 0: spawn_projectiles("cheese_wheel", 6); break; case 1: spawn_projectiles("tail_whip", 3); break;

// Blue bones only damage when touching if (collision_circle(px, py, 5, obj_bone, false, true)) if (soul_color == "blue") hp -= 1; Undertale Boss Battles Script

elif player_action == "MERCY": if target.mercy_points >= target.mercy_threshold: end_battle(spared=True) else: start_boss_attack(target.attack_pattern) How can you replicate the infamous "dying soul"

| Tool | Language | Best for | Undertale-style feature | |------|-----------|----------|--------------------------| | | GML | Most faithful recreation | Built-in collision & bullet systems | | Unity | C# | Cross-platform, advanced effects | Custom Shaders for bullet patterns | | Godot | GDScript | Open-source, light | AnimationTree for SOUL movement | | Construct 3 | Visual scripting | No-code rapid prototyping | Event sheets for turn logic | | FNF: Psych Engine | Haxe | Rhythm-based battles | Already has note-based attack patterns | mercy += 5

But for modders, fan-game developers, and curious programmers, the question isn't how to beat these battles, but how to script them . What makes a Sans attack pattern tick? How does Toriel’s mercy flag trigger? How can you replicate the infamous "dying soul" slow pan in GameMaker: Studio, Construct, or Unity?

if (act=="Share Cheese") ron.dialog = "MY CHEESE! ...Wait, for me?"; mercy += 5;