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|
package game
import (
"errors"
"regexp"
"strconv"
)
type effect interface {
apply(*LocalState)
end(*LocalState)
}
type dynamicEffect struct {
_apply func(*LocalState)
_end func(*LocalState)
}
func (e *dynamicEffect) apply(s *LocalState) {
e._apply(s)
}
func (e *dynamicEffect) end(s *LocalState) {
e._end(s)
}
func newCombinedEffect(effects []effect) *dynamicEffect {
return &dynamicEffect{
_apply: func(s *LocalState) {
for _, e := range effects {
e.apply(s)
}
},
_end: func(s *LocalState) {
for _, e := range effects {
e.end(s)
}
},
}
}
func newAdjustmentEffect(adjust func(Permanent, int), u *Unit, delta int) effect {
apply := func(*LocalState) { adjust(u, delta) }
end := func(*LocalState) { adjust(u, -delta) }
return &dynamicEffect{apply, end}
}
func newMeleeModificationEffect(u *Unit, delta int) effect {
return newAdjustmentEffect(adjustMelee, u, delta)
}
func newAttackModificationEffect(u *Unit, delta int) effect {
return newAdjustmentEffect(adjustAttack, u, delta)
}
func newMovementModificationEffect(u *Unit, delta int) effect {
return newAdjustmentEffect(adjustMovement, u, delta)
}
func newHealthModificationEffect(u *Unit, delta int) effect {
return newAdjustmentEffect(adjustHealth, u, delta)
}
func newTmpEffect(p Permanent, effect string) effect {
apply := func(*LocalState) { p.addTmpEffect(effect) }
end := func(*LocalState) { p.removeTmpEffect(effect) }
return &dynamicEffect{apply, end}
}
type xEffect struct {
// amount of the effect
x int
// does the effect set or adjust the value
set bool
// raw effect description
raw string
}
type ErrXEffectError struct {
err error
}
func (e ErrXEffectError) Error() string {
return e.err.Error()
}
var ErrXEffectFormat = ErrXEffectError{errors.New("invalid format")}
var (
xEffectXSuffix = regexp.MustCompile(`^\S+ ([\+-]?)(\d+)`)
xEffectXPrefix = regexp.MustCompile(`^([\+-]?)(\d+) \S+`)
)
func parseXEffect(desc string) (e xEffect, err error) {
if freeActionRegex.FindString(desc) != "" {
return e, ErrXEffectFormat
}
e.raw = desc
m := xEffectXSuffix.FindAllStringSubmatch(desc, -1)
if len(m) == 0 {
m = xEffectXPrefix.FindAllStringSubmatch(desc, -1)
}
if len(m) != 0 {
e.set = m[0][1] == ""
e.x, err = strconv.Atoi(m[0][1] + m[0][2])
if err != nil {
return e, ErrXEffectError{err}
}
return e, nil
}
// Both regex did not match
return e, ErrXEffectFormat
}
|
