begin working on pokeemerald

src/play_time.c

@@ -0,0 +1,73 @@
+#include "global.h"
+#include "play_time.h"
+
+enum
+{
+    STOPPED,
+    RUNNING,
+    MAXED_OUT
+};
+
+static u8 sPlayTimeCounterState;
+
+void PlayTimeCounter_Reset()
+{
+    sPlayTimeCounterState = STOPPED;
+
+    gSaveBlock2Ptr->playTimeHours = 0;
+    gSaveBlock2Ptr->playTimeMinutes = 0;
+    gSaveBlock2Ptr->playTimeSeconds = 0;
+    gSaveBlock2Ptr->playTimeVBlanks = 0;
+}
+
+void PlayTimeCounter_Start()
+{
+    sPlayTimeCounterState = RUNNING;
+
+    if (gSaveBlock2Ptr->playTimeHours > 999)
+        PlayTimeCounter_SetToMax();
+}
+
+void PlayTimeCounter_Stop()
+{
+    sPlayTimeCounterState = STOPPED;
+}
+
+void PlayTimeCounter_Update()
+{
+    if (sPlayTimeCounterState == RUNNING)
+    {
+        gSaveBlock2Ptr->playTimeVBlanks++;
+
+        if (gSaveBlock2Ptr->playTimeVBlanks > 59)
+        {
+            gSaveBlock2Ptr->playTimeVBlanks = 0;
+            gSaveBlock2Ptr->playTimeSeconds++;
+
+            if (gSaveBlock2Ptr->playTimeSeconds > 59)
+            {
+                gSaveBlock2Ptr->playTimeSeconds = 0;
+                gSaveBlock2Ptr->playTimeMinutes++;
+
+                if (gSaveBlock2Ptr->playTimeMinutes > 59)
+                {
+                    gSaveBlock2Ptr->playTimeMinutes = 0;
+                    gSaveBlock2Ptr->playTimeHours++;
+
+                    if (gSaveBlock2Ptr->playTimeHours > 999)
+                        PlayTimeCounter_SetToMax();
+                }
+            }
+        }
+    }
+}
+
+void PlayTimeCounter_SetToMax()
+{
+    sPlayTimeCounterState = MAXED_OUT;
+
+    gSaveBlock2Ptr->playTimeHours = 999;
+    gSaveBlock2Ptr->playTimeMinutes = 59;
+    gSaveBlock2Ptr->playTimeSeconds = 59;
+    gSaveBlock2Ptr->playTimeVBlanks = 59;
+}