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94 lines
2.7 KiB
94 lines
2.7 KiB
class_name Matter |
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static var REGISTRY := Registry.new() |
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static var NONE := Matter.new("none") |
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static var PLASTIC := Matter.new("plastic") |
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static var DEFAULT := NONE |
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var id : int |
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var name : String |
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func _init(name: String) -> void: |
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REGISTRY.add(name, self) |
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class Layer extends MeshInstance2D: |
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var data: PackedByteArray |
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var chunk: Chunk: |
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get: return get_parent() |
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func _init() -> void: |
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data.resize(Chunk.SIZE * Chunk.SIZE) |
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texture = preload("res://world/blocks/plastic.png") |
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static func load(buffer: StreamBuffer) -> Layer: |
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var result := Layer.new() |
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buffer.read_raw_buffer_into(result.data) |
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return result |
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func save(buffer: StreamBuffer) -> void: |
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buffer.write_raw_buffer(data) |
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func get_at(pos: Vector2i) -> Matter: |
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var index := Chunk.array_index(pos) |
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var id := data[index] |
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return Matter.REGISTRY.lookup_by_id(id) |
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func set_at(pos: Vector2i, value: Matter) -> void: |
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set_id_at(pos, value.id) |
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@rpc("reliable") |
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func set_id_at(pos: Vector2i, id: int) -> void: |
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var index := Chunk.array_index(pos) |
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if data[index] == id: return |
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# TODO: Keep track of how many non-air blocks are present, to allow for cleaning empty chunks. |
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data[index] = id |
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chunk.dirty = true |
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if multiplayer.is_server(): |
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# Send change to every player tracking this chunk. |
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for player in chunk.get_players_tracking(): |
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if player.network.is_local: continue # skip server player |
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set_id_at.rpc_id(player.network.peer_id, pos, id) |
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func _ready() -> void: |
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chunk.clean.connect(_update_mesh) |
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_update_mesh() |
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func _update_mesh() -> void: |
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const CHUNK_HALF_SIZE := (Vector2.ONE * Chunk.SIZE * Block.SIZE) / 2 |
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var any_blocks := false |
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var m := ImmediateMesh.new() |
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m.surface_begin(Mesh.PRIMITIVE_TRIANGLES) |
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var shapes: Shape.Layer = chunk.get_layer_or_null(Shape) |
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if shapes: # Should exist, but let's sanity check. |
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for pos in BlockRegion.LOCAL_CHUNK: |
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var offset := (Vector2.ONE / 2) + Vector2(pos) |
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# TODO: Support different matter. |
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# var matter := get_at(pos) |
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var shape := shapes.get_at(pos) |
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if shape.points.is_empty(): continue |
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any_blocks = true |
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for i in range(2, shape.points.size()): |
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var uv0 := shape.uvs[0 ] |
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var uv1 := shape.uvs[i-1] |
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var uv2 := shape.uvs[i ] |
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var p0 := (offset + shape.points[0 ]) * Block.SIZE - CHUNK_HALF_SIZE |
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var p1 := (offset + shape.points[i-1]) * Block.SIZE - CHUNK_HALF_SIZE |
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var p2 := (offset + shape.points[i ]) * Block.SIZE - CHUNK_HALF_SIZE |
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m.surface_set_uv(uv0); m.surface_add_vertex_2d(p0) |
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m.surface_set_uv(uv1); m.surface_add_vertex_2d(p1) |
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m.surface_set_uv(uv2); m.surface_add_vertex_2d(p2) |
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if any_blocks: |
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m.surface_end() |
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mesh = m |
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else: |
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mesh = null
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