`z_kaleido_prompt.c` Ok and Documented (Pause Menu Save/Continue Prompt. Unused) (#1045)

* kaleido prompt ok

* fix pauseCtx

8 files changed, 61 insertions, 16 deletions

diff --git a/include/z64.h b/include/z64.h
index cf4643d53..4128a2b38 100644
--- a/include/z64.h
+++ b/include/z64.h
@@ -469,8 +469,8 @@ typedef struct {
     /* 0x290 */ f32 unk_290;
     /* 0x294 */ f32 unk_294;
     /* 0x298 */ f32 unk_298;
-    /* 0x29C */ s16 unk_29C;
-    /* 0x29E */ s16 unk_29E;
+    /* 0x29C */ s16 promptChoice; // save/continue choice: 0 = yes; 4 = no
+    /* 0x29E */ s16 promptAlpha;
     /* 0x2A0 */ s16 unk_2A0;
     /* 0x2A2 */ u8 worldMapPoints[20];
     /* 0x2B6 */ u8 unk_2B6;
diff --git a/spec b/spec
index 334ff6bbb..dcdf27862 100644
--- a/spec
+++ b/spec
@@ -703,6 +703,7 @@ beginseg
     include "build/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_item.o"
     include "build/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_map.o"
     include "build/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_mask.o"
+    include "build/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_prompt.o"
     include "build/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_scope_NES.o"
     include "build/data/ovl_kaleido_scope/ovl_kaleido_scope.bss.o"
     include "build/data/ovl_kaleido_scope/ovl_kaleido_scope.reloc.o"
diff --git a/src/code/z_kaleido_setup.c b/src/code/z_kaleido_setup.c
index fa490dbca..a2742c746 100644
--- a/src/code/z_kaleido_setup.c
+++ b/src/code/z_kaleido_setup.c
@@ -138,7 +138,7 @@ void KaleidoSetup_Init(PlayState* play) {
     pauseCtx->unk_2A0 = -1;
     pauseCtx->unk_2BA = 320;
     pauseCtx->unk_2BC = 40;
-    pauseCtx->unk_29E = 100;
+    pauseCtx->promptAlpha = 100;
 
     View_Init(&pauseCtx->view, play->state.gfxCtx);
 }
diff --git a/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_mask.c b/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_mask.c
index aa24bf2e2..f8f61c5dc 100644
--- a/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_mask.c
+++ b/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_mask.c
@@ -50,18 +50,10 @@ s16 D_8082B6DC[] = {
     0x0000,
 };
 
-s32 D_8082B6E4[] = { 0, 0, 0 };
-
-s16 D_8082B6F0[] = { 100, 255 };
-
-s32 D_8082B6F4 = 0;
-
-s16 D_8082B6F8[] = { 10, 0, 0, 0 };
+s16 D_8082B6E4 = 0;
 
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_kaleido_scope/func_8081FF80.s")
 
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_kaleido_scope/func_808204AC.s")
 
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_kaleido_scope/func_80820FA4.s")
-
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_kaleido_scope/func_80821730.s")
diff --git a/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_prompt.c b/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_prompt.c
new file mode 100644
index 000000000..53453e8e7
--- /dev/null
+++ b/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_prompt.c
@@ -0,0 +1,49 @@
+/*
+ * File: z_kaleido_prompt.c
+ * Overlay: ovl_kaleido_scope
+ * Description: Pause Menu - Save and Continue Prompt
+ */
+
+#include "z_kaleido_scope.h"
+
+s16 sPromptAlphaTargets[] = { 100, 255 };
+
+// Unused remnant of OoT
+void KaleidoScope_UpdatePrompt(PlayState* play) {
+    static s16 sPromptAlphaTargetIndex = 0;
+    static s16 sPromptAlphaTimer = 10;
+    PauseContext* pauseCtx = &play->pauseCtx;
+    Input* input = CONTROLLER1(&play->state);
+    s8 relStickX = input->rel.stick_x;
+    s16 alphaStep;
+
+    if (((pauseCtx->state == 7) && (pauseCtx->unk_208 == 1)) || (pauseCtx->state == 0xE) || (pauseCtx->state == 0x11)) {
+
+        // Move the prompt
+        if ((pauseCtx->promptChoice == PAUSE_PROMPT_YES) && (relStickX >= 30)) {
+            // Move right to the no prompt
+            play_sound(NA_SE_SY_CURSOR);
+            pauseCtx->promptChoice = PAUSE_PROMPT_NO;
+        } else if ((pauseCtx->promptChoice != PAUSE_PROMPT_YES) && (relStickX <= -30)) {
+            // Move left to the yes prompt
+            play_sound(NA_SE_SY_CURSOR);
+            pauseCtx->promptChoice = PAUSE_PROMPT_YES;
+        }
+
+        // Update the alpha for the green glowing orb above the prompt
+        alphaStep = ABS_ALT(pauseCtx->promptAlpha - sPromptAlphaTargets[sPromptAlphaTargetIndex]) / sPromptAlphaTimer;
+
+        if (pauseCtx->promptAlpha >= sPromptAlphaTargets[sPromptAlphaTargetIndex]) {
+            pauseCtx->promptAlpha -= alphaStep;
+        } else {
+            pauseCtx->promptAlpha += alphaStep;
+        }
+
+        sPromptAlphaTimer--;
+        if (sPromptAlphaTimer == 0) {
+            pauseCtx->promptAlpha = sPromptAlphaTargets[sPromptAlphaTargetIndex];
+            sPromptAlphaTimer = sPromptAlphaTargetIndex + 20;
+            sPromptAlphaTargetIndex ^= 1;
+        }
+    }
+}
diff --git a/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_scope.h b/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_scope.h
index f4c91e9e8..b4d2a192f 100644
--- a/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_scope.h
+++ b/src/overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_scope.h
@@ -18,6 +18,9 @@ typedef enum {
   /* 3 */ DEBUG_EDITOR_EVENTS
 } DebugEditor;
 
+#define PAUSE_PROMPT_YES 0
+#define PAUSE_PROMPT_NO 4
+
 // Debug
 void KaleidoScope_DrawInventoryEditor(PlayState* play);
 void KaleidoScope_UpdateInventoryEditor(PlayState* play);
diff --git a/tools/disasm/functions.txt b/tools/disasm/functions.txt
index eaeb2f69d..70850a769 100644
--- a/tools/disasm/functions.txt
+++ b/tools/disasm/functions.txt
@@ -4217,7 +4217,7 @@
     0x8081FF80:("func_8081FF80",),
     0x808204AC:("func_808204AC",),
     0x80820FA4:("func_80820FA4",),
-    0x80821730:("func_80821730",),
+    0x80821730:("KaleidoScope_UpdatePrompt",),
     0x80821900:("func_80821900",),
     0x8082192C:("func_8082192C",),
     0x80821958:("func_80821958",),
diff --git a/tools/disasm/variables.txt b/tools/disasm/variables.txt
index 94a59d695..32ae1dd5e 100644
--- a/tools/disasm/variables.txt
+++ b/tools/disasm/variables.txt
@@ -4734,9 +4734,9 @@
     0x8082B6D4:("D_8082B6D4","UNK_TYPE1","",0x1),
     0x8082B6DC:("D_8082B6DC","UNK_TYPE1","",0x1),
     0x8082B6E4:("D_8082B6E4","UNK_TYPE2","",0x2),
-    0x8082B6F0:("D_8082B6F0","UNK_TYPE1","",0x1),
-    0x8082B6F4:("D_8082B6F4","UNK_TYPE2","",0x2),
-    0x8082B6F8:("D_8082B6F8","UNK_TYPE2","",0x2),
+    0x8082B6F0:("sPromptAlphaTargets","UNK_TYPE1","",0x1),
+    0x8082B6F4:("sPromptAlphaTargetIndex","UNK_TYPE2","",0x2),
+    0x8082B6F8:("sPromptAlphaTimer","UNK_TYPE2","",0x2),
     0x8082B700:("D_8082B700","UNK_TYPE1","",0x1),
     0x8082B73C:("D_8082B73C","UNK_TYPE1","",0x1),
     0x8082B778:("D_8082B778","UNK_TYPE1","",0x1),