implement magic/pierce!

3 files changed, 60 insertions, 0 deletions

diff --git a/go/game/cardImplementations.go b/go/game/cardImplementations.go
index f7f765d5..0780d6f9 100644
--- a/go/game/cardImplementations.go
+++ b/go/game/cardImplementations.go
@@ -324,6 +324,17 @@ func (*moreImpl) onPlay(a *PlayAction) {
 	a.Controller().DrawN(2)
 }
 
+type pierceImpl struct{ cardImplementationBase }
+
+func (*pierceImpl) playTargets() TargetDesc {
+	return newTargetDesc("unit")
+}
+
+func (*pierceImpl) onPlay(a *PlayAction) {
+	u := a.Target().Selection()[0].(*Unit)
+	u.Controller().gameState.addEotEffect(newTmpEffect(u, "-1 armor"))
+}
+
 type mineImpl struct{ cardImplementationBase }
 
 func (*mineImpl) onPlay(a *PlayAction) {
@@ -873,6 +884,7 @@ func init() {
 		"magic/heal!":      &healImpl{},
 		"magic/mine!":      &mineImpl{},
 		"magic/more!":      &moreImpl{},
+		"magic/pierce!":    &pierceImpl{},
 		"magic/ritual!":    &ritualImpl{},
 		"magic/rush!":      &rushImpl{},
 		"magic/select!":    &selectImpl{},
diff --git a/go/game/cardImplementations_test.go b/go/game/cardImplementations_test.go
index 43d69b76..ff41a752 100644
--- a/go/game/cardImplementations_test.go
+++ b/go/game/cardImplementations_test.go
@@ -419,3 +419,40 @@ symbols:
 		t.Fatal("sailor not adding movement to fisher")
 	}
 }
+
+func TestPierce(t *testing.T) {
+	s, _, p, _ := newMockState()
+	knight := s.addNewUnit(NewCard("base/knight"), Position{0, 0}, p)
+	archer := s.addNewUnit(NewCard("base/archer"), Position{1, 0}, p)
+
+	pa := NewPlayAction(p, NewCard("magic/pierce!"))
+	pa.Target().AddSelection(knight)
+	s.ResolveAction(pa)
+
+	x, err := knight.XEffect("armor")
+	if err != nil {
+		t.Fatal("unexpected", err)
+	}
+	if x != 0 {
+		t.Fatal("expected 0 armor")
+	}
+
+	pa.Target().AddSelection(archer)
+	s.ResolveAction(pa)
+	x, err = archer.XEffect("armor")
+	if err != nil {
+		t.Fatal("unexpected", err)
+	}
+	if x != -1 {
+		t.Fatal("expected -1 armor")
+	}
+
+	s.fight(knight, archer)
+	if knight.Damage() != 1 {
+		t.Fatal("Knight did not take 1 damage")
+	}
+
+	if archer.Damage() != 2 {
+		t.Fatal("Archer did not take 2 damage")
+	}
+}
diff --git a/go/game/effect_test.go b/go/game/effect_test.go
index e4db6334..09501863 100644
--- a/go/game/effect_test.go
+++ b/go/game/effect_test.go
@@ -17,6 +17,17 @@ func TestParseXEffect(t *testing.T) {
 		t.Fatal("expected x == 1")
 	}
 
+	e, err = parseXEffect("-1 armor")
+	if err != nil {
+		t.Fatal("unexpected", err)
+	}
+	if e.set {
+		t.Fatal("- xEffect reports as setting")
+	}
+	if e.x != -1 {
+		t.Fatal("expected x == -1")
+	}
+
 	_, err = parseXEffect("1: +1 armor")
 	if err == nil {
 		t.Fatal("parsed free action as X effect")