Port script_movement

8 files changed, 241 insertions, 15 deletions

diff --git a/src/battle_anim_sound_tasks.c b/src/battle_anim_sound_tasks.c
index d74b743e8..f2740a1a5 100644
--- a/src/battle_anim_sound_tasks.c
+++ b/src/battle_anim_sound_tasks.c
@@ -178,7 +178,7 @@ void sub_80DD148(u8 taskId)
     gTasks[taskId].data[2] = pan;
     if (species != SPECIES_NONE)
     {
-        if (gBattleAnimArgs[1] == TASK_NONE)
+        if (gBattleAnimArgs[1] == TAIL_SENTINEL)
             PlayCry3(species, pan, 9);
         else
             PlayCry3(species, pan, 7);
@@ -199,7 +199,7 @@ static void sub_80DD270(u8 taskId)
     {
         ++gTasks[taskId].data[9];
     }
-    else if (gTasks[taskId].data[0] == TASK_NONE)
+    else if (gTasks[taskId].data[0] == TAIL_SENTINEL)
     {
         if (!IsCryPlaying())
         {
diff --git a/src/battle_transition.c b/src/battle_transition.c
index 463a3d930..b33d72f15 100644
--- a/src/battle_transition.c
+++ b/src/battle_transition.c
@@ -644,7 +644,7 @@ static bool8 BT_Phase1Blink(struct Task *task)
 
 static bool8 BT_WaitForPhase1(struct Task *task)
 {
-    if (FindTaskIdByFunc(sBT_Phase1Tasks[task->tTransitionId]) == TASK_NONE)
+    if (FindTaskIdByFunc(sBT_Phase1Tasks[task->tTransitionId]) == TAIL_SENTINEL)
     {
         ++task->tState;
         return TRUE;
@@ -665,7 +665,7 @@ static bool8 BT_Phase2LaunchAnimTask(struct Task *task)
 static bool8 BT_WaitForPhase2(struct Task *task)
 {
     task->tTransitionDone = FALSE;
-    if (FindTaskIdByFunc(sBT_Phase2Tasks[task->tTransitionId]) == TASK_NONE)
+    if (FindTaskIdByFunc(sBT_Phase2Tasks[task->tTransitionId]) == TAIL_SENTINEL)
         task->tTransitionDone = TRUE;
     return FALSE;
 }
@@ -3432,7 +3432,7 @@ static void BT_CreatePhase1SubTask(s16 fadeOutDelay, s16 fadeInDelay, s16 blinkT
 
 static bool8 BT_IsPhase1Done(void)
 {
-    if (FindTaskIdByFunc(BT_Phase1SubTask) == TASK_NONE)
+    if (FindTaskIdByFunc(BT_Phase1SubTask) == TAIL_SENTINEL)
         return TRUE;
     else
         return FALSE;
diff --git a/src/event_object_lock.c b/src/event_object_lock.c
index 2bb9736aa..02f0557f2 100644
--- a/src/event_object_lock.c
+++ b/src/event_object_lock.c
@@ -87,7 +87,7 @@ void sub_80696C0(void)
 {
     u8 objectEventId = GetObjectEventIdByLocalIdAndMap(0xFF, 0, 0);
     ObjectEventClearHeldMovementIfFinished(&gObjectEvents[objectEventId]);
-    sub_80974D8();
+    ScriptMovement_UnfreezeObjectEvents();
     UnfreezeObjectEvents();
 }
 
@@ -98,7 +98,7 @@ void UnionRoom_UnlockPlayerAndChatPartner(void)
         ObjectEventClearHeldMovementIfFinished(&gObjectEvents[gSelectedObjectEvent]);
     objectEventId = GetObjectEventIdByLocalIdAndMap(0xFF, 0, 0);
     ObjectEventClearHeldMovementIfFinished(&gObjectEvents[objectEventId]);
-    sub_80974D8();
+    ScriptMovement_UnfreezeObjectEvents();
     UnfreezeObjectEvents();
 }
 
diff --git a/src/list_menu.c b/src/list_menu.c
index bd1d2699e..21ef40fbe 100644
--- a/src/list_menu.c
+++ b/src/list_menu.c
@@ -256,7 +256,7 @@ void DestroyListMenuTask(u8 listTaskId, u16 *cursorPos, u16 *itemsAbove)
     if (itemsAbove != NULL)
         *itemsAbove = list->itemsAbove;
 
-    if (list->taskId != TASK_NONE)
+    if (list->taskId != TAIL_SENTINEL)
         ListMenuRemoveCursorObject(list->taskId, list->template.cursorKind - 2);
 
     DestroyTask(listTaskId);
@@ -346,7 +346,7 @@ static u8 ListMenuInitInternal(const struct ListMenuTemplate *listMenuTemplate,
     list->itemsAbove = itemsAbove;
     list->unk_1C = 0;
     list->unk_1D = 0;
-    list->taskId = TASK_NONE;
+    list->taskId = TAIL_SENTINEL;
     list->unk_1F = 0;
     gListMenuOverride.cursorPal = list->template.cursorPal;
     gListMenuOverride.fillValue = list->template.fillValue;
@@ -418,12 +418,12 @@ static void ListMenuDrawCursor(struct ListMenu *list)
     case 1:
         break;
     case 2:
-        if (list->taskId == TASK_NONE)
+        if (list->taskId == TAIL_SENTINEL)
             list->taskId = ListMenuAddCursorObject(list, 0);
         ListMenuUpdateCursorObject(list->taskId, GetWindowAttribute(list->template.windowId, WINDOW_TILEMAP_LEFT) * 8 - 1, GetWindowAttribute(list->template.windowId, WINDOW_TILEMAP_TOP) * 8 + y - 1, 0);
         break;
     case 3:
-        if (list->taskId == TASK_NONE)
+        if (list->taskId == TAIL_SENTINEL)
             list->taskId = ListMenuAddCursorObject(list, 1);
         ListMenuUpdateCursorObject(list->taskId, GetWindowAttribute(list->template.windowId, WINDOW_TILEMAP_LEFT) * 8 + x, GetWindowAttribute(list->template.windowId, WINDOW_TILEMAP_TOP) * 8 + y, 1);
         break;
diff --git a/src/palette.c b/src/palette.c
index 6609c9baa..04638f6d1 100644
--- a/src/palette.c
+++ b/src/palette.c
@@ -948,7 +948,7 @@ void sub_8071898(void)
     while (TRUE)
     {
         taskId = FindTaskIdByFunc(sub_80718B8);
-        if (taskId == TASK_NONE)
+        if (taskId == TAIL_SENTINEL)
             break;
         DestroyTask(taskId);
     }
diff --git a/src/rock.c b/src/rock.c
index 082f3b655..3ec9cec04 100644
--- a/src/rock.c
+++ b/src/rock.c
@@ -704,7 +704,7 @@ static void sub_80B4F78(struct Sprite *sprite)
     {
         u8 taskId = FindTaskIdByFunc(sub_80B4D00);
 
-        if (taskId != TASK_NONE)
+        if (taskId != TAIL_SENTINEL)
             --gTasks[taskId].data[11];
         DestroySprite(sprite);
     }
diff --git a/src/scrcmd.c b/src/scrcmd.c
index 389bf0cc2..77b87aaa8 100644
--- a/src/scrcmd.c
+++ b/src/scrcmd.c
@@ -1238,7 +1238,7 @@ bool8 ScrCmd_releaseall(struct ScriptContext *ctx)
     HideFieldMessageBox();
     playerObjectId = GetObjectEventIdByLocalIdAndMap(0xFF, 0, 0);
     ObjectEventClearHeldMovementIfFinished(&gObjectEvents[playerObjectId]);
-    sub_80974D8();
+    ScriptMovement_UnfreezeObjectEvents();
     UnfreezeObjectEvents();
     return FALSE;
 }
@@ -1252,7 +1252,7 @@ bool8 ScrCmd_release(struct ScriptContext *ctx)
         ObjectEventClearHeldMovementIfFinished(&gObjectEvents[gSelectedObjectEvent]);
     playerObjectId = GetObjectEventIdByLocalIdAndMap(0xFF, 0, 0);
     ObjectEventClearHeldMovementIfFinished(&gObjectEvents[playerObjectId]);
-    sub_80974D8();
+    ScriptMovement_UnfreezeObjectEvents();
     UnfreezeObjectEvents();
     return FALSE;
 }
diff --git a/src/script_movement.c b/src/script_movement.c
new file mode 100644
index 000000000..7503e8f44
--- /dev/null
+++ b/src/script_movement.c
@@ -0,0 +1,226 @@
+#include "global.h"
+#include "task.h"
+#include "util.h"
+#include "event_object_movement.h"
+#include "constants/event_objects.h"
+#include "constants/event_object_movement.h"
+
+static EWRAM_DATA const u8 (*sMovementScripts[OBJECT_EVENTS_COUNT]) = {};
+
+static void ScriptMovement_StartMoveObjects(u8 priority);
+static u8 GetMoveObjectsTaskId(void);
+static u8 ScriptMovement_TryAddNewMovement(u8 taskId, u8 objEventId, const u8 *movementScript);
+static u8 GetMovementScriptIdFromObjectEventId(u8 taskId, u8 objEventId);
+static bool8 IsMovementScriptFinished(u8 taskId, u8 moveScrId);
+static void ScriptMovement_MoveObjects(u8 taskId);
+static void ScriptMovement_AddNewMovement(u8 taskId, u8 moveScrId, u8 objEventId, const u8 *movementScript);
+static void ScriptMovement_UnfreezeActiveObjects(u8 taskId);
+static void ScriptMovement_TakeStep(u8 taskId, u8 moveScrId, u8 objEventId, const u8 *movementScript);
+
+bool8 ScriptMovement_StartObjectMovementScript(u8 localId, u8 mapNum, u8 mapGroup, const u8 *movementScript)
+{
+    u8 objEventId;
+    if (TryGetObjectEventIdByLocalIdAndMap(localId, mapNum, mapGroup, &objEventId))
+        return TRUE;
+
+    if (!FuncIsActiveTask(ScriptMovement_MoveObjects))
+        ScriptMovement_StartMoveObjects(50);
+    return ScriptMovement_TryAddNewMovement(GetMoveObjectsTaskId(), objEventId, movementScript);
+}
+
+bool8 ScriptMovement_IsObjectMovementFinished(u8 localId, u8 mapNum, u8 mapGroup)
+{
+    u8 objEventId;
+    u8 taskId;
+    u8 moveScrId;
+    if (TryGetObjectEventIdByLocalIdAndMap(localId, mapNum, mapGroup, &objEventId))
+        return TRUE;
+    taskId = GetMoveObjectsTaskId();
+    moveScrId = GetMovementScriptIdFromObjectEventId(taskId, objEventId);
+    if (moveScrId == OBJECT_EVENTS_COUNT)
+        return TRUE;
+    return IsMovementScriptFinished(taskId, moveScrId);
+}
+
+void ScriptMovement_UnfreezeObjectEvents(void)
+{
+    u8 taskId = GetMoveObjectsTaskId();
+    if (taskId != TAIL_SENTINEL)
+    {
+        ScriptMovement_UnfreezeActiveObjects(taskId);
+        DestroyTask(taskId);
+    }
+}
+
+void ScriptMovement_StartMoveObjects(u8 priority)
+{
+    u8 i;
+    u8 taskId = CreateTask(ScriptMovement_MoveObjects, priority);
+    for (i = 1; i < NUM_TASK_DATA; i++)
+    {
+        gTasks[taskId].data[i] = -1;
+    }
+}
+
+u8 GetMoveObjectsTaskId(void)
+{
+    return FindTaskIdByFunc(ScriptMovement_MoveObjects);
+}
+
+bool8 ScriptMovement_TryAddNewMovement(u8 taskId, u8 objEventId, const u8 *movementScript)
+{
+    u8 moveScrId;
+
+    moveScrId = GetMovementScriptIdFromObjectEventId(taskId, objEventId);
+    if (moveScrId != OBJECT_EVENTS_COUNT)
+    {
+        if (IsMovementScriptFinished(taskId, moveScrId) == FALSE)
+        {
+            return TRUE;
+        }
+        else
+        {
+            ScriptMovement_AddNewMovement(taskId, moveScrId, objEventId, movementScript);
+            return FALSE;
+        }
+    }
+    moveScrId = GetMovementScriptIdFromObjectEventId(taskId, OBJ_EVENT_ID_PLAYER);
+    if (moveScrId == OBJECT_EVENTS_COUNT)
+    {
+        return TRUE;
+    }
+    else
+    {
+        ScriptMovement_AddNewMovement(taskId, moveScrId, objEventId, movementScript);
+        return FALSE;
+    }
+}
+
+u8 GetMovementScriptIdFromObjectEventId(u8 taskId, u8 objEventId)
+{
+    u8 i;
+    u8 *moveScriptId = (u8 *)&gTasks[taskId].data[1];
+    for (i = 0; i < OBJECT_EVENTS_COUNT; i++, moveScriptId++)
+    {
+        if (*moveScriptId == objEventId)
+            return i;
+    }
+    return OBJECT_EVENTS_COUNT;
+}
+
+void LoadObjectEventIdPtrFromMovementScript(u8 taskId, u8 moveScrId, u8 **pObjEventId)
+{
+    u8 i;
+
+    *pObjEventId = (u8 *)&gTasks[taskId].data[1];
+    for (i = 0; i < moveScrId; i++, (*pObjEventId)++)
+        ;
+}
+
+void SetObjectEventIdAtMovementScript(u8 taskId, u8 moveScrId, u8 objEventId)
+{
+    u8 *ptr;
+
+    LoadObjectEventIdPtrFromMovementScript(taskId, moveScrId, &ptr);
+    *ptr = objEventId;
+}
+
+void LoadObjectEventIdFromMovementScript(u8 taskId, u8 moveScrId, u8 *objEventId)
+{
+    u8 *ptr;
+
+    LoadObjectEventIdPtrFromMovementScript(taskId, moveScrId, &ptr);
+    *objEventId = *ptr;
+}
+
+
+static void ClearMovementScriptFinished(u8 taskId, u8 moveScrId)
+{
+    u16 mask = ~gBitTable[moveScrId];
+
+    gTasks[taskId].data[0] &= mask;
+}
+
+static void SetMovementScriptFinished(u8 taskId, u8 moveScrId)
+{
+    gTasks[taskId].data[0] |= gBitTable[moveScrId];
+}
+
+static bool8 IsMovementScriptFinished(u8 taskId, u8 moveScrId)
+{
+    u16 moveScriptFinished = (u16)gTasks[taskId].data[0] & gBitTable[moveScrId];
+
+    if (moveScriptFinished != 0)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+static void SetMovementScript(u8 moveScrId, const u8 *movementScript)
+{
+    sMovementScripts[moveScrId] = movementScript;
+}
+
+static const u8 *GetMovementScript(u8 moveScrId)
+{
+    return sMovementScripts[moveScrId];
+}
+
+static void ScriptMovement_AddNewMovement(u8 taskId, u8 moveScrId, u8 objEventId, const u8 *movementScript)
+{
+    ClearMovementScriptFinished(taskId, moveScrId);
+    SetMovementScript(moveScrId, movementScript);
+    SetObjectEventIdAtMovementScript(taskId, moveScrId, objEventId);
+}
+
+static void ScriptMovement_UnfreezeActiveObjects(u8 taskId)
+{
+    u8 *pObjEventId;
+    u8 i;
+
+    pObjEventId = (u8 *)&gTasks[taskId].data[1];
+    for (i = 0; i < OBJECT_EVENTS_COUNT; i++, pObjEventId++)
+    {
+        if (*pObjEventId != 0xFF)
+            UnfreezeObjectEvent(&gObjectEvents[*pObjEventId]);
+    }
+}
+
+static void ScriptMovement_MoveObjects(u8 taskId)
+{
+    u8 i;
+    u8 objEventId;
+
+    for (i = 0; i < OBJECT_EVENTS_COUNT; i++)
+    {
+        LoadObjectEventIdFromMovementScript(taskId, i, &objEventId);
+        if (objEventId != 0xFF)
+            ScriptMovement_TakeStep(taskId, i, objEventId, GetMovementScript(i));
+    }
+}
+
+static void ScriptMovement_TakeStep(u8 taskId, u8 moveScrId, u8 objEventId, const u8 *movementScript)
+{
+    u8 nextMoveActionId;
+
+    if (IsMovementScriptFinished(taskId, moveScrId) == TRUE)
+        return;
+    if (ObjectEventIsSpecialAnimActive(&gObjectEvents[objEventId])
+        && !ObjectEventClearHeldMovementIfFinished(&gObjectEvents[objEventId]))
+        return;
+
+    nextMoveActionId = *movementScript;
+    if (nextMoveActionId == MOVEMENT_ACTION_STEP_END)
+    {
+        SetMovementScriptFinished(taskId, moveScrId);
+        FreezeObjectEvent(&gObjectEvents[objEventId]);
+    }
+    else
+    {
+        if (!ObjectEventSetHeldMovement(&gObjectEvents[objEventId], nextMoveActionId))
+        {
+            movementScript++;
+            SetMovementScript(moveScrId, movementScript);
+        }
+    }
+}