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4
.gitignore
vendored
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4
.gitignore
vendored
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.idea/
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vendor/
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*.sh
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21
LICENSE
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21
LICENSE
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MIT License
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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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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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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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17
README.md
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17
README.md
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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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32
entity.go
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32
entity.go
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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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3
go.mod
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3
go.mod
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module code.rocketnine.space/tslocum/world
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go 1.16
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48
map.go
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48
map.go
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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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32
map_test.go
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map_test.go
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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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