101 lines
2.8 KiB
Go
101 lines
2.8 KiB
Go
package items
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import (
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"lab.zaar.be/thefish/alchemyst-go/engine/ecs"
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"lab.zaar.be/thefish/alchemyst-go/engine/types"
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)
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type CarriedFace interface {
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Drop()
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Pickup()
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}
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type Carried struct {
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Mass int //масса в граммах
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Bulk int //внешний размер, см3
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}
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func (c Carried) Type() string {
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return ecs.CarriedComponent
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}
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func (c Carried) Pickup(who, what ecs.Entity) {
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// check if im lying on ground
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if !Controller.HasComponent(what, ecs.CoordsComponent) {
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return
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}
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// something inexistent on map trying to pickup an item?!
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if !Controller.HasComponent(who, ecs.CoordsComponent) {
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//todo log error - investigate this situation
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return
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}
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//check if who and what are on the same tile
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whoCoords := Controller.GetComponent(who, ecs.CoordsComponent).(types.Coords)
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whatCoords := Controller.GetComponent(what, ecs.CoordsComponent).(types.Coords)
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if whoCoords != whatCoords {
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//todo log error - something strange happened
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return
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}
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//does not have inventory?
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if !Controller.HasComponent(who, ecs.BackpackComponent) {
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//todo send message - you cant carry items
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return
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}
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bp := Controller.GetComponent(who, Backpack{}.Type()).(Backpack)
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if !bp.HasFreeSpace(c.Bulk, c.Mass) {
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//todo send message - does not fit to your inventory
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return
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}
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//do not remove appearance
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//remove coords instead (does not exist on map anymore)
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Controller.RemoveComponent(what, ecs.CoordsComponent)
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bp.items = append(bp.items, what)
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}
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func (c Carried) Drop(who, what ecs.Entity) {
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var coords types.Coords
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// something inexistent on map trying to drop an item?!
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if !Controller.HasComponent(who, ecs.CoordsComponent) {
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//todo log error - investigate this situation
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return
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} else {
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coords = Controller.GetComponent(who, types.Coords{}.Type()).(types.Coords)
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}
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//does not have inventory?
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if !Controller.HasComponent(who, ecs.BackpackComponent) {
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//todo send message - you cant carry items
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return
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}
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bp := Controller.GetComponent(who, Backpack{}.Type()).(Backpack)
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var dropped ecs.Entity
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bp.items, dropped = ecs.DeleteFromEntitySlice(bp.items, what)
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if dropped != what {
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//todo log error - something strange happened
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return
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}
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//Give dropped back coordinated
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Controller.AddComponent(dropped, coords)
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//Controller.UpdateComponent(what, coords.Type(), coords) //even we need that?
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Controller.UpdateComponent(who, bp.Type(), bp)
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}
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func (c Carried) GetMass(what ecs.Entity) int {
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return c.Mass
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}
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func (c *Carried) GetBulk(what ecs.Entity) int {
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return c.Bulk
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}
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func FindCarriedOnTile(coords types.Coords) []ecs.Entity {
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carrieds := Controller.GetEntitiesWithComponent(ecs.CarriedComponent)
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result := make([]ecs.Entity, 0)
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for _, ent := range carrieds {
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car := Controller.GetComponent(ent, ecs.CarriedComponent)
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if car == coords {
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result = append(result, ent)
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}
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}
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return result
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}
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