133 lines
3.4 KiB
GDScript
133 lines
3.4 KiB
GDScript
@tool
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extends Node
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@export_tool_button("Generate Portal Mesh")
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var _generate_portal_mesh: Callable = generate_portal_mesh
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@export_tool_button("Remove Mesh")
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var _remove_mesh: Callable = func(): portal.mesh = null
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@export var portal: MyPortal
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@export_range(0.1, 10, 0.01) var height: float = 2.0:
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set(v):
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height = v
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if Engine.is_editor_hint(): generate_portal_mesh()
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@export_range(0.1, 10, 0.01) var width: float = 1.0:
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set(v):
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width = v
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if Engine.is_editor_hint(): generate_portal_mesh()
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## Player camera's NEAR clip distance
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@export_range(0, 0.2, 0.001) var indent: float = 0.1:
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set(v):
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indent = v
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generate_portal_mesh()
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@export var portal_material: BaseMaterial3D
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func _get_configuration_warnings() -> PackedStringArray:
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var warnings: Array = []
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if portal == null:
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warnings.append("Assign a portal to generate the mesh for")
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return warnings
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func generate_portal_mesh() -> void:
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if portal == null:
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push_error("No portal")
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return
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if portal.mesh != null:
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push_warning("The portal %s already has a mesh! Replacing." % portal.name)
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portal.mesh = null
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var mesh = ArrayMesh.new()
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print("[PMM] Creating mesh")
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var surface_array: Array = []
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surface_array.resize(Mesh.ARRAY_MAX)
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var verts: PackedVector3Array = PackedVector3Array()
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var uvs: PackedVector2Array = PackedVector2Array()
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var normals: PackedVector3Array = PackedVector3Array()
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var indices: PackedInt32Array = PackedInt32Array()
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# Just to save some chars
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var w: float = width / 2
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var h: float = height / 2
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# Outside rect
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var TOP_LEFT: Vector3 = Vector3(-w, h, 0)
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var TOP_RIGHT: Vector3 = Vector3(w, h, 0)
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var BOTTOM_LEFT: Vector3 = Vector3(-w, -h, 0)
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var BOTTOM_RIGHT: Vector3 = Vector3(w, -h, 0)
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# Inside rect, indented
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var INDENT_TL: Vector3 = TOP_LEFT + Vector3(indent, -indent, -indent)
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var INDENT_TR: Vector3 = TOP_RIGHT + Vector3(-indent, -indent, -indent)
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var INDENT_BL: Vector3 = BOTTOM_LEFT + Vector3(indent, indent, -indent)
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var INDENT_BR: Vector3 = BOTTOM_RIGHT + Vector3(-indent, indent, -indent)
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verts.append_array([
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TOP_LEFT, TOP_RIGHT, BOTTOM_LEFT, BOTTOM_RIGHT,
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INDENT_TL, INDENT_TR, INDENT_BL, INDENT_BR
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])
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var ix: float = indent / width
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var iy: float = indent / height
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uvs.append_array([
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Vector2(0, 0), Vector2(1, 0), Vector2(0, 1), Vector2(1, 1), # Outside UVs
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Vector2(ix, iy), Vector2(1-ix, iy), Vector2(ix, 1-iy), Vector2(1-ix, 1-iy) # Indented UVs
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])
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# We are going for a flat-surface look here. Portals should be unshaded anyways.
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normals.append_array([
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Vector3.BACK, Vector3.BACK, Vector3.BACK, Vector3.BACK,
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Vector3.BACK, Vector3.BACK, Vector3.BACK, Vector3.BACK
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])
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# 0 ----------- 1
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# | \ / |
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# | 4-------5 |
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# | | | |
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# | | | |
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# | 6-------7 |
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# | / \ |
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# 2 ----------- 3
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# Triangles are clockwise!
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indices.append_array([
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0, 1, 4,
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4, 1, 5, # Top section done
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1, 3, 5,
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5, 3, 7, # right section done
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3, 2, 7,
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7, 2, 6, # bottom section done
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2, 0, 6,
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6, 0, 4, # left section done
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4, 5, 6,
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6, 5, 7, # middle sectiondone
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])
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surface_array[Mesh.ARRAY_VERTEX] = verts
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surface_array[Mesh.ARRAY_TEX_UV] = uvs
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surface_array[Mesh.ARRAY_NORMAL] = normals
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surface_array[Mesh.ARRAY_INDEX] = indices
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mesh.add_surface_from_arrays(Mesh.PRIMITIVE_TRIANGLES, surface_array)
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if portal_material:
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mesh.surface_set_material(0, portal_material)
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mesh.surface_set_name(0, "Portal Material")
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portal.mesh = mesh
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print("[PMM] Mesh assigned")
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