Decompile script movement

1 files changed, 233 insertions, 0 deletions

diff --git a/src/script_movement.c b/src/script_movement.c
new file mode 100644
index 000000000..bbeb0eedc
--- /dev/null
+++ b/src/script_movement.c
@@ -0,0 +1,233 @@
+#include "global.h"
+#include "script_movement.h"
+#include "field_map_obj.h"
+#include "field_map_obj_helpers.h"
+#include "task.h"
+#include "util.h"
+
+// static functions
+static void sub_80D33AC(u8);
+static u8 sub_80D33F4(void);
+static bool8 sub_80D3408(u8, u8, const u8 *);
+static u8 sub_80D3474(u8, u8);
+static bool8 sub_80D3584(u8, u8);
+static void sub_80D35DC(u8, u8, u8, const u8 *);
+static void UnfreezeObjects(u8);
+static void sub_80D3660(u8);
+static void sub_80A2490(u8, u8, u8, const u8 *);
+
+// EWRAM_DATA
+static EWRAM_DATA const u8 *gUnknown_02039D90[16] = {0};
+
+// text
+bool8 ScriptMovement_StartObjectMovementScript(u8 localId, u8 mapNum, u8 mapGroup, const u8 *movementScript)
+{
+    u8 mapObjId;
+
+    if (TryGetFieldObjectIdByLocalIdAndMap(localId, mapNum, mapGroup, &mapObjId))
+        return TRUE;
+    if (!FuncIsActiveTask(sub_80D3660))
+        sub_80D33AC(50);
+    return sub_80D3408(sub_80D33F4(), mapObjId, movementScript);
+}
+
+bool8 ScriptMovement_IsObjectMovementFinished(u8 localId, u8 mapNum, u8 mapBank)
+{
+    u8 mapObjId;
+    u8 r4;
+    u8 r1;
+
+    if (TryGetFieldObjectIdByLocalIdAndMap(localId, mapNum, mapBank, &mapObjId))
+        return TRUE;
+    r4 = sub_80D33F4();
+    r1 = sub_80D3474(r4, mapObjId);
+    if (r1 == 16)
+        return TRUE;
+    return sub_80D3584(r4, r1);
+}
+
+void sub_80D338C(void)
+{
+    u8 taskId;
+
+    taskId = sub_80D33F4();
+    if (taskId != 0xFF)
+    {
+        UnfreezeObjects(taskId);
+        DestroyTask(taskId);
+    }
+}
+
+
+static void sub_80D33AC(u8 priority)
+{
+    u8 taskId;
+    u8 i;
+
+    taskId = CreateTask(sub_80D3660, priority);
+    for (i = 1; i < 16; i++)
+        gTasks[taskId].data[i] = 0xFFFF;
+}
+
+static u8 sub_80D33F4(void)
+{
+    return FindTaskIdByFunc(sub_80D3660);
+}
+
+static bool8 sub_80D3408(u8 taskId, u8 mapObjId, const u8 *movementScript)
+{
+    u8 r4;
+
+    r4 = sub_80D3474(taskId, mapObjId);
+    if (r4 != 16)
+    {
+        if (sub_80D3584(taskId, r4) == 0)
+        {
+            return TRUE;
+        }
+        else
+        {
+            sub_80D35DC(taskId, r4, mapObjId, movementScript);
+            return FALSE;
+        }
+    }
+    r4 = sub_80D3474(taskId, 0xFF);
+    if (r4 == 16)
+    {
+        return TRUE;
+    }
+    else
+    {
+        sub_80D35DC(taskId, r4, mapObjId, movementScript);
+        return FALSE;
+    }
+}
+
+static u8 sub_80D3474(u8 taskId, u8 b)
+{
+    u8 *ptr;
+    u8 i;
+
+    ptr = (u8 *)&gTasks[taskId].data[1];
+    for (i = 0; i < 16; i++, ptr++)
+    {
+        if (*ptr == b)
+            return i;
+    }
+    return 16;
+}
+
+static void sub_80D34B0(u8 taskId, u8 b, u8 **c)
+{
+    u8 i;
+
+    *c = (u8 *)&gTasks[taskId].data[1];
+    for (i = 0; i < b; i++, (*c)++)
+        ;
+}
+
+static void sub_80D34E4(u8 taskId, u8 b, u8 c)
+{
+    u8 *ptr;
+
+    sub_80D34B0(taskId, b, &ptr);
+    *ptr = c;  //what is this supposed to do?
+}
+
+static void sub_80D3508(u8 taskId, u8 b, u8 *c)
+{
+    u8 *ptr;
+
+    sub_80D34B0(taskId, b, &ptr);
+    *c = *ptr;
+}
+
+static void sub_80D352C(u8 a, u8 b)
+{
+    u16 var = ~gBitTable[b];
+
+    gTasks[a].data[0] &= var;
+}
+
+static void sub_80D355C(u8 taskId, u8 b)
+{
+    gTasks[taskId].data[0] |= gBitTable[b];
+}
+
+static bool8 sub_80D3584(u8 taskId, u8 b)
+{
+    u16 var = (u16)gTasks[taskId].data[0] & gBitTable[b];
+
+    if (var != 0)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+static void npc_obj_offscreen_culling_and_flag_update(u8 a, const u8 *movementScript)
+{
+    gUnknown_02039D90[a] = movementScript;
+}
+
+static const u8 *sub_80D35CC(u8 a)
+{
+    return gUnknown_02039D90[a];
+}
+
+static void sub_80D35DC(u8 taskId, u8 b, u8 mapObjId, const u8 *movementScript)
+{
+    sub_80D352C(taskId, b);
+    npc_obj_offscreen_culling_and_flag_update(b, movementScript);
+    sub_80D34E4(taskId, b, mapObjId);
+}
+
+static void UnfreezeObjects(u8 taskId)
+{
+    u8 *pMapObjId;
+    u8 i;
+
+    pMapObjId = (u8 *)&gTasks[taskId].data[1];
+    for (i = 0; i < 16; i++, pMapObjId++)
+    {
+        if (*pMapObjId != 0xFF)
+            npc_sync_anim_pause_bits(&gMapObjects[*pMapObjId]);
+    }
+}
+
+static void sub_80D3660(u8 taskId)
+{
+    u8 i;
+    u8 var;
+
+    for (i = 0; i < 16; i++)
+    {
+        sub_80D3508(taskId, i, &var);
+        if (var != 0xFF)
+            sub_80A2490(taskId, i, var, sub_80D35CC(i));
+    }
+}
+
+static void sub_80A2490(u8 taskId, u8 b, u8 mapObjId, const u8 *d)
+{
+    u8 var;
+
+    if (FieldObjectIsSpecialAnimActive(&gMapObjects[mapObjId])
+     && !FieldObjectClearAnimIfSpecialAnimFinished(&gMapObjects[mapObjId]))
+        return;
+
+    var = *d;
+    if (var == 0xFE)
+    {
+        sub_80D355C(taskId, b);
+        FreezeMapObject(&gMapObjects[mapObjId]);
+    }
+    else
+    {
+        if (!FieldObjectSetSpecialAnim(&gMapObjects[mapObjId], var))
+        {
+            d++;
+            npc_obj_offscreen_culling_and_flag_update(b, d);
+        }
+    }
+}
+