mirror of
https://github.com/OpenDiablo2/OpenDiablo2
synced 2025-02-13 20:16:41 -05:00
3f5d2c0938
* component ID's are dynamically allocated now * removed `akara.BaseComponent` member from components * component declarations drastically reduced
48 lines
1.4 KiB
Go
48 lines
1.4 KiB
Go
//nolint:dupl,golint,stylecheck // component declarations are supposed to look the same
|
|
package d2components
|
|
|
|
import (
|
|
"github.com/gravestench/akara"
|
|
|
|
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2math/d2vector"
|
|
)
|
|
|
|
// static check that Position implements Component
|
|
var _ akara.Component = &Position{}
|
|
|
|
// Position contains an embedded d2vector.Position, which is a vector with
|
|
// helper methods for translating between screen, isometric, tile, and sub-tile space.
|
|
type Position struct {
|
|
*d2vector.Position
|
|
}
|
|
|
|
// New creates a new Position. By default, the position is (0,0)
|
|
func (*Position) New() akara.Component {
|
|
p := d2vector.NewPosition(0, 0)
|
|
|
|
return &Position{
|
|
Position: &p,
|
|
}
|
|
}
|
|
|
|
// PositionFactory is a wrapper for the generic component factory that returns Position component instances.
|
|
// This can be embedded inside of a system to give them the methods for adding, retrieving, and removing a Position.
|
|
type PositionFactory struct {
|
|
Position *akara.ComponentFactory
|
|
}
|
|
|
|
// AddPosition adds a Position component to the given entity and returns it
|
|
func (m *PositionFactory) AddPosition(id akara.EID) *Position {
|
|
return m.Position.Add(id).(*Position)
|
|
}
|
|
|
|
// GetPosition returns the Position component for the given entity, and a bool for whether or not it exists
|
|
func (m *PositionFactory) GetPosition(id akara.EID) (*Position, bool) {
|
|
component, found := m.Position.Get(id)
|
|
if !found {
|
|
return nil, found
|
|
}
|
|
|
|
return component.(*Position), found
|
|
}
|