Adding modding folder with a hacked build.

modding/hacked/ss1/content/archive/IsSavegame.go

@@ -0,0 +1,28 @@
+package archive
+
+import (
+	"io/ioutil"
+
+	"github.com/inkyblackness/hacked/ss1/resource"
+)
+
+// IsSavegame returns true for resources that most likely identify a savegame.
+// This function must be called with a resource from ID 0x0FA1.
+func IsSavegame(res resource.BlockProvider) bool {
+	if res == nil {
+		return false
+	}
+	if res.BlockCount() < 1 {
+		return false
+	}
+	dataReader, err := res.Block(0)
+	if err != nil {
+		return false
+	}
+	data, err := ioutil.ReadAll(dataReader)
+	if err != nil {
+		return false
+	}
+	state := NewGameState(data)
+	return state.IsSavegame()
+}