1 files changed, 97 insertions, 0 deletions
diff --git a/src/field_doortransition.c b/src/field_doortransition.c
new file mode 100644
index 000000000..261ed46c9
--- /dev/null
+++ b/src/field_doortransition.c
@@ -0,0 +1,97 @@
+#include "global.h"
+#include "gba/syscall.h"
+#include "global.fieldmap.h"
+#include "script.h"
+#include "task.h"
+#include "weather.h"
+
+void palette_bg_fill_white(void);
+void palette_bg_fill_black(void);
+void pal_fill_black(void);
+void task0A_asap_script_env_2_enable_and_set_ctx_running(u8);
+
+extern u8 get_map_light_from_warp0(void);
+extern u8 sav1_map_get_light_level(void);
+extern u8 fade_type_for_given_maplight_pair(u8, u8);
+extern u16 gPlttBufferFaded[];
+extern struct MapHeader * warp1_get_mapheader(void);
+extern void sub_8059B88(u8);
+extern void sub_8053E90(void);
+
+extern u8 sub_810CDB8(u8, u8);
+extern int sub_8080E70(void);
+
+void palette_bg_fill_white(void)
+{
+    u32 source_color = 0x7fff7fff;
+    CpuFastSet(&source_color, gPlttBufferFaded, 0x100 | (1 << 24));
+}
+
+void palette_bg_fill_black(void)
+{
+    u32 source_color = 0;
+    CpuFastSet(&source_color, gPlttBufferFaded, 0x100 | (1 << 24));
+}
+
+void pal_fill_for_map_transition(void)
+{
+    u8 map_light = get_map_light_from_warp0();
+    switch (fade_type_for_given_maplight_pair(map_light, sav1_map_get_light_level()))
+    {
+    case 0:
+        fade_screen(0, 0);
+        palette_bg_fill_black();
+        break;
+    case 1:
+        fade_screen(2, 0);
+        palette_bg_fill_white();
+    }
+}
+
+void pal_fill_black(void)
+{
+    fade_screen(0, 0);
+    palette_bg_fill_black();
+}
+
+void fade_8080918(void)
+{
+    u8 light_level = sav1_map_get_light_level();
+    switch (sub_810CDB8(light_level, warp1_get_mapheader()->mapType))
+    {
+    case 0:
+        fade_screen(1, 0);
+        break;
+    case 1:
+        fade_screen(3, 0);
+    }
+}
+
+void sub_8080958(u8 arg)
+{
+    sub_8059B88(!arg);
+}
+
+void task0A_asap_script_env_2_enable_and_set_ctx_running(u8 taskID)
+{
+    if (sub_8080E70() == 1)
+    {
+        DestroyTask(taskID);
+        EnableBothScriptContexts();
+    }
+}
+
+void sub_8080990(void)
+{
+    ScriptContext2_Enable();
+    sub_8053E90();
+    pal_fill_black();
+    CreateTask(&task0A_asap_script_env_2_enable_and_set_ctx_running, 0x0a);
+}
+
+void sub_80809B0(void)
+{
+    ScriptContext2_Enable();
+    pal_fill_black();
+    CreateTask(&task0A_asap_script_env_2_enable_and_set_ctx_running, 0x0a);
+}