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MIT License |
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|
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Copyright (c) 2021 Trevor Slocum <trevor@rocketnine.space> |
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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of this software and associated documentation files (the "Software"), to deal |
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in the Software without restriction, including without limitation the rights |
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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copies of the Software, and to permit persons to whom the Software is |
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furnished to do so, subject to the following conditions: |
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|
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The above copyright notice and this permission notice shall be included in all |
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copies or substantial portions of the Software. |
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|
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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SOFTWARE. |
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# world |
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[](https://docs.rocketnine.space/code.rocketnine.space/tslocum/world) |
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[](https://liberapay.com/rocketnine.space) |
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Tile-based worldbuilding library |
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## Install |
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```go get code.rocketnine.space/tslocum/world``` |
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## Documentation |
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All documentation is available via [godoc](https://docs.rocketnine.space/code.rocketnine.space/tslocum/world). |
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## Support |
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Please share issues and suggestions [here](https://code.rocketnine.space/tslocum/world/issues). |
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package world |
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import "sync" |
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// Entity represents an entity within the world.
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type Entity struct { |
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t int // Type
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x, y, z int |
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sync.RWMutex |
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} |
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// NewEntity returns a new Entity.
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func NewEntity(t int) *Entity { |
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return &Entity{t: t} |
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} |
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// Is returns whether the Entity matches the specified type.
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func (e *Entity) Is(t int) bool { |
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e.RLock() |
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defer e.RUnlock() |
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return e.t == t |
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} |
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// Coordinates returns the position of the entity.
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func (e *Entity) Coordinates() (x, y, z int) { |
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e.RLock() |
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defer e.RUnlock() |
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return e.x, e.y, e.z |
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} |
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module code.rocketnine.space/tslocum/world |
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go 1.16 |
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package world |
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import ( |
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"strconv" |
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"sync" |
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) |
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// Coordinates returns the provided coordinates as a comma-delimited string.
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func Coordinates(x, y, z int) string { |
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return strconv.Itoa(x) + "," + strconv.Itoa(y) + "," + strconv.Itoa(z) |
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} |
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// Map represents a collection of entities in a 3D space.
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type Map struct { |
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contents map[string]*Entity |
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sync.RWMutex |
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} |
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// NewMap returns a new Map.
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func NewMap() *Map { |
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return &Map{} |
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} |
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// Contents returns the entities contained in the Map.
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func (m *Map) Contents() map[string]*Entity { |
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m.RLock() |
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defer m.RUnlock() |
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c := make(map[string]*Entity) |
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for key, value := range m.contents { |
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c[key] = value |
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} |
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return c |
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} |
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// Add adds an entity to the Map.
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func (m *Map) Add(e *Entity, x, y, z int) { |
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m.Lock() |
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defer m.Unlock() |
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if m.contents == nil { |
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m.contents = make(map[string]*Entity) |
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} |
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e.x, e.y, e.z = x, y, z |
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m.contents[Coordinates(x, y, z)] = e |
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} |
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package world |
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import "testing" |
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const ( |
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EntityNone = iota |
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EntityFloor |
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EntityWall |
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EntityCeiling |
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EntityActor |
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) |
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func TestMap(t *testing.T) { |
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m := NewMap() |
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e := NewEntity(EntityFloor) |
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m.Add(e, 0, 0, 0) |
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c := m.Contents() |
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found := 0 |
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for position, entity := range c { |
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if entity.Is(EntityFloor) { |
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if position != "0,0,0" { |
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t.Errorf("unexpected position: wanted %s, got %s", "0,0,0", position) |
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} |
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found++ |
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} |
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} |
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if found != 1 { |
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t.Errorf("unexpected number of floor tiles: wanted %d, got %d", 1, found) |
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} |
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} |
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