1 files changed, 132 insertions, 0 deletions
diff --git a/src/fldeff_escalator.c b/src/fldeff_escalator.c
new file mode 100644
index 000000000..b906225da
--- /dev/null
+++ b/src/fldeff_escalator.c
@@ -0,0 +1,132 @@
+#include "global.h"
+#include "task.h"
+#include "fieldmap.h"
+#include "field_camera.h"
+#include "field_player_avatar.h"
+
+static EWRAM_DATA u8 sEscalatorAnim_TaskId = 0;
+
+void sub_80E12E8(u8 taskId, const s16 *list, u16 c)
+{
+    s16 r5 = gTasks[taskId].data[4] - 1;
+    s16 r3 = gTasks[taskId].data[5] - 1;
+    s16 r4 = gTasks[taskId].data[1];
+    s16 y;
+    s16 x;
+    
+    if (gTasks[taskId].data[2] == 0)
+    {
+        for (y = 0; y < 3; y++)
+        {
+            for (x = 0; x < 3; x++)
+            {
+                s16 metatileId = MapGridGetMetatileIdAt(r5 + x, r3 + y);
+                
+                if (list[r4] == metatileId)
+                {
+                    if (r4 != 2)
+                        MapGridSetMetatileIdAt(r5 + x, r3 + y, c | list[r4 + 1]);
+                    else
+                        MapGridSetMetatileIdAt(r5 + x, r3 + y, c | list[0]);
+                }
+            }
+        }
+    }
+    else
+    {
+        for (y = 0; y < 3; y++)
+        {
+            for (x = 0; x < 3; x++)
+            {
+                s16 metatileId = MapGridGetMetatileIdAt(r5 + x, r3 + y);
+                
+                if (list[2 - r4] == metatileId)
+                {
+                    if (r4 != 2)
+                        MapGridSetMetatileIdAt(r5 + x, r3 + y, c | list[1 - r4]);
+                    else
+                        MapGridSetMetatileIdAt(r5 + x, r3 + y, c | list[2]);
+                }
+            }
+        }
+    }
+}
+
+static const u16 gUnknown_08589ABA[] = {0x284, 0x282, 0x280};
+static const u16 gUnknown_08589AC0[] = {0x285, 0x283, 0x281};
+static const u16 gUnknown_08589AC6[] = {0x28C, 0x28A, 0x288};
+static const u16 gUnknown_08589ACC[] = {0x28D, 0x28B, 0x289};
+static const u16 gUnknown_08589AD2[] = {0x2A0, 0x2A2, 0x2A4};
+static const u16 gUnknown_08589AD8[] = {0x2A1, 0x2A3, 0x2A5};
+static const u16 gUnknown_08589ADE[] = {0x2A8, 0x2AA, 0x2AC};
+
+void sub_80E1444(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+
+    data[3] = 1;
+
+    switch (data[0])
+    {
+        case 0:
+            sub_80E12E8(taskId, gUnknown_08589ABA, 0);
+            break;
+        case 1:
+            sub_80E12E8(taskId, gUnknown_08589AC0, 0);
+            break;
+        case 2:
+            sub_80E12E8(taskId, gUnknown_08589AC6, 0xC00);
+            break;
+        case 3:
+            sub_80E12E8(taskId, gUnknown_08589ACC, 0);
+            break;
+        case 4:
+            sub_80E12E8(taskId, gUnknown_08589AD2, 0xC00);
+            break;
+        case 5:
+            sub_80E12E8(taskId, gUnknown_08589AD8, 0);
+            break;
+        case 6:
+            sub_80E12E8(taskId, gUnknown_08589ADE, 0);
+            break;
+    }
+
+    data[0] = (data[0] + 1) & 7;
+    if (!data[0])
+    {
+        DrawWholeMapView();
+        data[1] = (data[1] + 1) % 3;
+        data[3] = 0;
+    }
+}
+
+u8 sub_80E150C(u16 var)
+{
+    u8 taskId = CreateTask(sub_80E1444, 0);
+    s16 *data = gTasks[taskId].data;
+
+    PlayerGetDestCoords(&data[4], &data[5]);
+    data[0] = 0;
+    data[1] = 0;
+    data[2] = var;
+    sub_80E1444(taskId);
+    return taskId;
+}
+
+void sub_80E1558(u8 var)
+{
+    sEscalatorAnim_TaskId = sub_80E150C(var);
+}
+
+void sub_80E1570(void)
+{
+    DestroyTask(sEscalatorAnim_TaskId);
+}
+
+bool8 sub_80E1584(void)
+{
+    if (gTasks[sEscalatorAnim_TaskId].data[3] == 0 && gTasks[sEscalatorAnim_TaskId].data[1] == 2)
+        return FALSE;
+    else
+        return TRUE;
+}