Add counter (genshinsim#417)

* add counter
* rename and fix checking normal counter

internal/tmpl/character/helper.go

@@ -7,3 +7,7 @@ func (c *Tmpl) AdvanceNormalIndex() {
 		c.NormalCounter = 0
 	}
 }
+
+func (c *Tmpl) NextNormalCounter() int {
+	return c.NormalCounter + 1
+}

internal/tmpl/queue/conditions.go

@@ -62,6 +62,8 @@ func (q *Queuer) evalCond(cond core.Condition) (bool, error) {
 		return q.evalInfusion(cond)
 	case ".construct":
 		return q.evalConstruct(cond)
+	case ".normal":
+		return q.evalNormal(cond)
 	}
 	return false, nil
 }

internal/tmpl/queue/counter.go

@@ -0,0 +1,23 @@
+package queue
+
+import (
+	"errors"
+	"strings"
+
+	"github.com/genshinsim/gcsim/pkg/core"
+)
+
+func (q *Queuer) evalNormal(cond core.Condition) (bool, error) {
+	//.normal.X (X = character)
+	if len(cond.Fields) < 2 {
+		return false, errors.New("eval normal counter: unexpected short field, expected at least 2")
+	}
+	name := strings.TrimPrefix(cond.Fields[1], ".")
+	key := core.CharNameToKey[name]
+	char, ok := q.core.CharByName(key)
+	if !ok {
+		return false, errors.New("eval normal counter: invalid char in condition")
+	}
+	e := char.NextNormalCounter()
+	return compInt(cond.Op, e, cond.Value), nil
+}

pkg/core/character.go

@@ -79,6 +79,7 @@ type Character interface {
 	Snapshot(a *AttackInfo) Snapshot
 	PreDamageSnapshotAdjust(*AttackEvent, Target) []interface{}
 	ResetNormalCounter()
+	NextNormalCounter() int
 }
 
 type ZoneType int