intermediate commit

Implement actions and multiple ui widgets

1 files changed, 28 insertions, 1 deletions

diff --git a/go/game/stack.go b/go/game/stack.go
index 5d62e601..22c20fa3 100644
--- a/go/game/stack.go
+++ b/go/game/stack.go
@@ -1,5 +1,32 @@
 package game
 
+import (
+	"log"
+)
+
 type Stack struct {
-	Actions []Action
+	gameState *State
+	Actions   []Action
+}
+
+func NewStack(s *State) *Stack {
+	return &Stack{s, []Action{}}
+}
+
+func (s *Stack) IsEmpty() bool {
+	return len(s.Actions) == 0
+}
+
+func (s *Stack) Push(a Action) {
+	s.Actions = append(s.Actions, a)
+}
+
+func (s *Stack) Pop() {
+	l := len(s.Actions)
+	if l == 0 {
+		log.Fatalf("Can not pop from empty stack")
+	}
+	a := s.Actions[l-1]
+	s.Actions = s.Actions[:l-1]
+	a.Resolve(s.gameState)
 }