64 lines
2.9 KiB
GDScript
64 lines
2.9 KiB
GDScript
class_name KickSystem
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# Deduplication: each (A,B) pair resolved once per physics frame
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static var _frame: int = -1
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static var _pairs: Dictionary = {}
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# Called by a flying kickable when it detects another kickable.
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# Returns true if a merge happened (both objects will despawn).
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static func resolve(owner: Node3D, other: Node3D, owner_vel: Vector3) -> bool:
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var f := Engine.get_physics_frames()
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if f != _frame:
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_frame = f
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_pairs.clear()
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var id_lo := mini(owner.get_instance_id(), other.get_instance_id())
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var id_hi := maxi(owner.get_instance_id(), other.get_instance_id())
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var key := str(id_lo) + "_" + str(id_hi)
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if _pairs.has(key):
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return false
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_pairs[key] = true
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var other_vel: Vector3 = other.get("fly_vel") if other.get("fly_vel") != null else Vector3.ZERO
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var speed_a := Vector2(owner_vel.x, owner_vel.z).length()
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var speed_b := Vector2(other_vel.x, other_vel.z).length()
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var collision_speed := speed_a + speed_b
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# ── 1. Recipe merge (MergeRecipes) ────────────────────────────────────────
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var kt_a: String = owner.get("kickable_type") if owner.get("kickable_type") != null else ""
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var kt_b: String = other.get("kickable_type") if other.get("kickable_type") != null else ""
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if kt_a != "" and kt_b != "":
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var recipe: Dictionary = MergeRecipes.find(kt_a, kt_b, collision_speed)
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if not recipe.is_empty():
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_execute_recipe(owner, other, recipe)
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return true
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# ── 2. Merge (enemy-to-enemy) ─────────────────────────────────────────────
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if owner.has_method("can_merge_with") and owner.call("can_merge_with", other, collision_speed):
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owner.call("do_merge_with", other)
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return true
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# ── 3. Damage ─────────────────────────────────────────────────────────────
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var mod_a: float = owner.get("damage_modifier") if owner.get("damage_modifier") != null else 0.0
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var mod_b: float = other.get("damage_modifier") if other.get("damage_modifier") != null else 0.0
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if is_instance_valid(other) and other.has_method("apply_collision_damage") and mod_a > 0.0:
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other.call("apply_collision_damage", collision_speed * mod_a)
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if is_instance_valid(owner) and owner.has_method("apply_collision_damage") and mod_b > 0.0:
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owner.call("apply_collision_damage", collision_speed * mod_b)
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return false
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static func _execute_recipe(a: Node3D, b: Node3D, recipe: Dictionary) -> void:
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var pos := (a.global_position + b.global_position) * 0.5
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var parent := a.get_parent()
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a.queue_free()
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b.queue_free()
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var scene: PackedScene = load(recipe["result_scene"])
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if scene == null or parent == null:
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return
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var result := scene.instantiate() as Node3D
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parent.add_child(result)
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result.global_position = pos
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FX.merge_smoke(pos + Vector3(0, 0.3, 0), parent)
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