through sub_81351AC

asm/wallclock.s

@@ -5,144 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_8135130
-sub_8135130: @ 8135130
-	push {r4-r6,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	bl RtcCalcLocalTime
-	ldr r1, =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r6, r0, r1
-	ldr r5, =gLocalTime
-	movs r0, 0x2
-	ldrsb r0, [r5, r0]
-	strh r0, [r6, 0xC]
-	movs r0, 0x3
-	ldrsb r0, [r5, r0]
-	strh r0, [r6, 0xE]
-	movs r0, 0xE
-	ldrsh r1, [r6, r0]
-	lsls r0, r1, 1
-	adds r0, r1
-	lsls r0, 1
-	strh r0, [r6, 0x8]
-	movs r1, 0xC
-	ldrsh r0, [r6, r1]
-	movs r1, 0xC
-	bl __modsi3
-	lsls r0, 16
-	asrs r0, 16
-	lsls r4, r0, 4
-	subs r4, r0
-	lsls r4, 1
-	movs r1, 0xE
-	ldrsh r0, [r6, r1]
-	movs r1, 0xA
-	bl __divsi3
-	lsls r0, 16
-	asrs r0, 16
-	lsls r1, r0, 2
-	adds r1, r0
-	adds r4, r1
-	strh r4, [r6, 0xA]
-	movs r0, 0x2
-	ldrsb r0, [r5, r0]
-	cmp r0, 0xB
-	bgt _081351A0
-	movs r0, 0
-	b _081351A2
-	.pool
-_081351A0:
-	movs r0, 0x1
-_081351A2:
-	strh r0, [r6, 0x12]
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_8135130
-
-	thumb_func_start sub_81351AC
-sub_81351AC: @ 81351AC
-	push {r4-r7,lr}
-	sub sp, 0x4
-	adds r6, r0, 0
-	ldr r2, =gTasks
-	movs r0, 0x2E
-	ldrsh r1, [r6, r0]
-	lsls r0, r1, 2
-	adds r0, r1
-	lsls r0, 3
-	adds r0, r2
-	ldrh r4, [r0, 0x8]
-	adds r7, r4, 0
-	adds r0, r4, 0
-	bl Sin2
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0
-	bge _081351D4
-	adds r0, 0xF
-_081351D4:
-	lsls r0, 12
-	lsrs r5, r0, 16
-	adds r0, r4, 0
-	bl Cos2
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0
-	bge _081351E8
-	adds r0, 0xF
-_081351E8:
-	lsls r1, r0, 12
-	lsrs r1, 16
-	lsls r3, r5, 16
-	lsrs r2, r3, 16
-	negs r3, r3
-	lsrs r3, 16
-	str r1, [sp]
-	movs r0, 0
-	bl SetOamMatrix
-	ldr r1, =gUnknown_085B22D0
-	lsls r2, r7, 1
-	adds r0, r2, r1
-	ldrb r0, [r0]
-	lsls r0, 24
-	asrs r0, 24
-	lsls r0, 16
-	lsrs r3, r0, 16
-	adds r1, 0x1
-	adds r2, r1
-	movs r0, 0
-	ldrsb r0, [r2, r0]
-	lsls r0, 16
-	lsrs r2, r0, 16
-	cmp r3, 0x80
-	bls _08135224
-	movs r1, 0xFF
-	lsls r1, 8
-	adds r0, r1, 0
-	orrs r3, r0
-_08135224:
-	cmp r2, 0x80
-	bls _08135230
-	movs r1, 0xFF
-	lsls r1, 8
-	adds r0, r1, 0
-	orrs r2, r0
-_08135230:
-	strh r3, [r6, 0x24]
-	strh r2, [r6, 0x26]
-	add sp, 0x4
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81351AC
-
 	thumb_func_start sub_8135244
 sub_8135244: @ 8135244
 	push {r4-r7,lr}

src/wallclock.c

@@ -17,6 +17,7 @@
 #include "strings.h"
 #include "sound.h"
 #include "songs.h"
+#include "trig.h"
 #include "decompress.h"
 
 // static types
@@ -45,8 +46,8 @@ static void sub_8134FB0(u8 taskId);
 static u16 GetClockHandAngle(u16 a0, u8 command, u8 a2);
 static bool32 MoveClockHand(u8 taskId, u8 command);
 static void _12HourClockFixAMPM(u8 taskId, u8 command);
-void sub_8135130(u8 taskId);
+static void sub_8135130(u8 taskId);
-void sub_81351AC(struct Sprite *sprite);
+static void sub_81351AC(struct Sprite *sprite);
 void sub_8135244(struct Sprite *sprite);
 void sub_81352DC(struct Sprite *sprite);
 void sub_8135380(struct Sprite *sprite);
@@ -917,3 +918,42 @@ static void _12HourClockFixAMPM(u8 taskId, u8 command)
             break;
     }
 }
+
+static void sub_8135130(u8 taskId)
+{
+    RtcCalcLocalTime();
+    gTasks[taskId].data[WALL_CLOCK_TASK_HOUR] = gLocalTime.hours;
+    gTasks[taskId].data[WALL_CLOCK_TASK_MINUTE] = gLocalTime.minutes;
+    gTasks[taskId].data[WALL_CLOCK_TASK_MINUTE_HAND_ANGLE] = gTasks[taskId].data[WALL_CLOCK_TASK_MINUTE] * 6;
+    gTasks[taskId].data[WALL_CLOCK_TASK_HOUR_HAND_ANGLE] = (gTasks[taskId].data[WALL_CLOCK_TASK_HOUR] % 12) * 30 + (gTasks[taskId].data[WALL_CLOCK_TASK_MINUTE] / 10) * 5;
+    if (gLocalTime.hours < 12)
+    {
+        gTasks[taskId].data[WALL_CLOCK_TASK_12HRCLOCK_AM_PM] = FALSE;
+    }
+    else
+    {
+        gTasks[taskId].data[WALL_CLOCK_TASK_12HRCLOCK_AM_PM] = TRUE;
+    }
+}
+
+static void sub_81351AC(struct Sprite *sprite)
+{
+    u16 angle = gTasks[sprite->data0].data[WALL_CLOCK_TASK_MINUTE_HAND_ANGLE];
+    s16 sin = Sin2(angle) / 16;
+    s16 cos = Cos2(angle) / 16;
+    u16 xhat;
+    u16 yhat;
+    SetOamMatrix(0, cos, sin, -sin, cos);
+    xhat = gUnknown_085B22D0[angle][0];
+    yhat = gUnknown_085B22D0[angle][1];
+    if (xhat > 0x80)
+    {
+        xhat |= 0xff00;
+    }
+    if (yhat > 0x80)
+    {
+        yhat |= 0xff00;
+    }
+    sprite->pos2.x = xhat;
+    sprite->pos2.y = yhat;
+}