Almost decompiled roulette_util, started decompiling roulette

2 files changed, 422 insertions, 0 deletions

diff --git a/src/roulette.c b/src/roulette.c
new file mode 100644
index 000000000..e15d6ee2f
--- /dev/null
+++ b/src/roulette.c
@@ -0,0 +1,33 @@
+#include "global.h"
+
+#include "roulette_util.h"
+#include "task.h"
+#include "palette.h"
+
+extern u8 gUnknown_02019000[];
+
+extern u8 ewram[];
+//#define ewram190B8  ((struct UnkStruct0 *)  (ewram + 0x190B8))
+#define ewram19000  ((u8 *)                 (ewram + 0x19000))
+
+
+void sub_81150FC(void)
+{
+	struct UnkStruct0 *s;
+    u8 *p;
+	RunTasks();
+	AnimateSprites();
+	BuildOamBuffer();
+    p = ewram19000;
+	s = (struct UnkStruct0 *)(&p[0xB8]);
+	if (s->val0)
+	task_tutorial_controls_fadein(s);
+}
+
+void sub_8115124(void)
+{
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+    
+}
diff --git a/src/roulette_util.c b/src/roulette_util.c
new file mode 100644
index 000000000..9dc92a1df
--- /dev/null
+++ b/src/roulette_util.c
@@ -0,0 +1,389 @@
+#include "global.h"
+#include "roulette_util.h"
+
+static u8 sub_81249E4(struct UnkStruct3 *);
+static u8 sub_8124BEC(struct UnkStruct3 *);
+
+extern u16 gPlttBufferFaded[];
+extern u16 gPlttBufferUnfaded[];
+
+void sub_8124918(struct UnkStruct0 *r0)
+{
+	r0->val0 = 0;
+	r0->val2 = 0;
+	memset((&r0->val3), 0, 0xC0);
+}
+
+u8 sub_812492C(struct UnkStruct0 *r0, u8 r1, struct UnkStruct1 *r2)
+{
+	if (!(r1 < 0x10) || (r0->val3[r1].field1))
+	{
+			return 0xFF;
+	}
+	else
+	{
+		r0->val3[r1].val4 = r2->val0;
+		r0->val3[r1].val5 = r2->val1;
+		r0->val3[r1].val6 = r2->val2;
+		r0->val3[r1].val7 = r2->val3;
+		r0->val3[r1].val8 = r2->val4;
+
+		r0->val3[r1].field2 = r2->field0;
+		r0->val3[r1].field3 = r2->field1;
+		r0->val3[r1].field4 = r2->field2;
+
+		r0->val3[r1].field0 = 0x0;
+		r0->val3[r1].field1 = 0x1;
+
+		r0->val3[r1].val2 = 0x0;
+		r0->val3[r1].val1 = 0x0;
+		if (r0->val3[r1].field4 < 0)
+			r0->val3[r1].val3 = 0xFF;
+		else
+			r0->val3[r1].val3 = 0x1;
+		return r1;
+	}
+}
+
+#ifdef NONMATCHING
+ //Functionally equivalent
+u8 unref_sub_81249B0(struct UnkStruct0 *r0, u8 r1)
+{
+	if (!(r1 < 0x10) || (r0->val3[r1].field1))
+	{
+			return 0xFF;
+	}
+	else
+	{
+		memset(&(r0->val3[r1]), 0, 0xC);
+		return r1;
+	}
+}
+#else
+__attribute__((naked))
+u8 unref_sub_81249B0(struct UnkStruct0 *r0 , u8 r1)
+{
+		asm(".syntax unified\n\
+		push {r4,lr}\n\
+		adds r2, r0, 0\n\
+		lsls r1, 24\n\
+		lsrs r1, 24\n\
+		adds r4, r1, 0\n\
+		cmp r4, 0xF\n\
+		bhi _081249DC\n\
+		lsls r0, r4, 1\n\
+		adds r0, r4\n\
+		lsls r0, 2\n\
+		adds r1, r2, r0\n\
+		ldrb r0, [r1, 0x4]\n\
+		lsrs r0, 7\n\
+		cmp r0, 0\n\
+		beq _081249DC\n\
+		adds r0, r1, 0x4\n\
+		movs r1, 0\n\
+		movs r2, 0xC\n\
+		bl memset\n\
+		adds r0, r4, 0\n\
+		b _081249DE\n\
+		_081249DC:\n\
+		movs r0, 0xFF\n\
+		_081249DE:\n\
+		pop {r4}\n\
+		pop {r1}\n\
+		bx r1\n\
+			.syntax divided\n");
+}
+#endif
+
+u8 sub_81249E4(struct UnkStruct3 *r0)
+{
+	u8 i;
+	u8 returnval;
+	for (i = 0; i < r0->val6; i++)
+	{
+		u32 offset = r0->val5 + i;
+		struct PlttData *faded = (struct PlttData *)&gPlttBufferFaded[offset];
+		struct PlttData *unfaded = (struct PlttData *)&gPlttBufferUnfaded[offset];
+		switch(r0->field0)
+		{
+		case 0x1:
+			if ((u32)(faded->r + r0->val3) < 0x20)
+				faded->r += r0->val3;
+			if ((u32)(faded->g + r0->val3) < 0x20)
+				faded->g += r0->val3;
+			if ((u32)(faded->b + r0->val3) < 0x20)
+				faded->b += r0->val3;
+		break;
+		case 0x2:
+			if (r0->val3 < 0)
+			{
+				if (!(faded->r + r0->val3 < unfaded->r))
+					faded->r += r0->val3;
+				if (!(faded->g + r0->val3 < unfaded->g))
+					faded->g += r0->val3;
+				if (!(faded->b + r0->val3 < unfaded->b))
+					faded->b += r0->val3;
+			}
+			else
+			{
+				if (!(faded->r + r0->val3 > unfaded->r))
+					faded->r += r0->val3;
+				if (!(faded->g + r0->val3 > unfaded->g))
+					faded->g += r0->val3;
+				if (!(faded->b + r0->val3 > unfaded->b))
+					faded->b += r0->val3;
+			}
+		break;
+		}
+	}
+	if (((u32)r0->val2++) != r0->field2)
+	{
+		returnval = 0x0;
+	}
+	else
+	{
+		r0->val2 = 0x0;
+		r0->val3 = r0->val3 * -1;
+		if (r0->field0 == 0x1)
+			r0->field0++;
+		else
+			r0->field0--;
+		returnval = 0x1;
+	}
+	return returnval;
+}
+
+u8 sub_8124BEC(struct UnkStruct3 *r0)
+{
+	u8 rg2 = 0;
+	switch (r0->field0)
+	{
+		case 0x1:
+		for (rg2 = 0; rg2 < r0->val6; rg2++)
+			gPlttBufferFaded[r0->val5 + rg2] = r0->val4;
+		r0->field0++;
+		break;
+		case 0x2:
+		for (rg2 = 0; rg2 < r0->val6; rg2++)
+			gPlttBufferFaded[r0->val5 + rg2] = gPlttBufferUnfaded[r0->val5 + rg2];
+		r0->field0--;
+		break;
+	}
+	return 0x1;
+}
+
+void task_tutorial_controls_fadein(struct UnkStruct0 *r0)
+{
+	u8 i = 0;
+	if (r0->val0)
+	{
+		for (i = 0; i < 0x10; i++)
+		{
+			if ((r0->val2 >> i) & 0x1)
+			{
+				if (((u8)--r0->val3[i].val1) == 0xFF) // if underflow ?
+				{
+					if (r0->val3[i].val4 & (0x80 << 8)) // PlttData->unused_15 ?
+						sub_81249E4(&r0->val3[i]);
+					else
+						sub_8124BEC(&r0->val3[i]);
+					r0->val3[i].val1 = r0->val3[i].val7;
+				}
+			}
+		}
+	}
+}
+
+void sub_8124CE8(struct UnkStruct0 *r0, u16 r1)
+{
+	u8 i = 0;
+	r0->val0++;
+	for (i = 0; i < 0x10; i++)
+	{
+		if ((r1 >> i) & 0x1)
+		{
+			if (r0->val3[i].field1)
+			{
+				r0->val2 |= 0x1 << i;
+				r0->val3[i].field0 = 0x1;
+			}
+		}
+	}
+}
+
+void sub_8124D3C(struct UnkStruct0 *r0, u16 r1)
+{
+	u8 i;
+	for (i = 0; i < 0x10; i++)
+	{
+		if ((r0->val2 >> i) & 0x1)
+		{
+			if (r0->val3[i].field1)
+			{
+				if ((r1 >> i) & 0x1)
+				{
+					u32 offset = r0->val3[i].val5;
+					u16 *faded = &gPlttBufferFaded[offset];
+					u16 *unfaded = &gPlttBufferUnfaded[offset];
+					memcpy(faded, unfaded, r0->val3[i].val6 * 2);
+					r0->val3[i].field0 = 0x0;
+					r0->val3[i].val2 = 0x0;
+					r0->val3[i].val1 = 0x0;
+					if (r0->val3[i].field4 < 0)
+						r0->val3[i].val3 = 0xFF;
+					else
+						r0->val3[i].val3 = 0x1;
+				}
+			}
+		}
+	}
+	if (r1 == 0xFFFF)
+	{
+		r0->val0 = 0x0;
+		r0->val2 = 0x0;
+	}
+	else
+	{
+		r0->val2 = r0->val2 & ~r1;
+	}
+}
+#ifdef NONMATCHING
+void sub_8124DDC(u16 *r0, u16 r1, u8 r2, u8 r3, u8 r4, u8 r5)
+{
+	u16 *rg0;
+	u8 c;
+	u8 i = 0;
+	u32 offset= r3 * 0x20 + r2;
+	rg0 = &r0[offset];
+	for (i = 0; i < r5; i++)
+	{
+		rg0 = &rg0[i * 0x20 ];
+		c = 0;
+		for (c = 0; c < r4; c++)
+		{
+			*rg0++ = r1;
+		}
+	}
+}
+#else
+__attribute__((naked))
+void sub_8124DDC(u16 *r0, u16 r1, u8 r2, u8 r3, u8 r4, u8 r5)
+{
+	asm(".syntax unified\n\
+	push {r4-r7,lr}\n\
+	adds r6, r0, 0\n\
+	ldr r0, [sp, 0x14]\n\
+	ldr r4, [sp, 0x18]\n\
+	lsls r1, 16\n\
+	lsrs r7, r1, 16\n\
+	lsls r2, 24\n\
+	lsrs r2, 24\n\
+	lsls r3, 24\n\
+	lsls r0, 24\n\
+	lsrs r5, r0, 24\n\
+	lsls r4, 24\n\
+	lsrs r4, 24\n\
+	movs r1, 0\n\
+	lsrs r3, 19\n\
+	adds r3, r2\n\
+	lsls r3, 1\n\
+	adds r6, r3\n\
+	cmp r1, r4\n\
+	bcs _08124E26\n\
+_08124E04:\n\
+	lsls r0, r1, 6\n\
+	adds r2, r6, r0\n\
+	movs r0, 0\n\
+	adds r3, r1, 0x1\n\
+	cmp r0, r5\n\
+	bcs _08124E1E\n\
+_08124E10:\n\
+	strh r7, [r2]\n\
+	adds r2, 0x2\n\
+	adds r0, 0x1\n\
+	lsls r0, 24\n\
+	lsrs r0, 24\n\
+	cmp r0, r5\n\
+	bcc _08124E10\n\
+_08124E1E:\n\
+	lsls r0, r3, 24\n\
+	lsrs r1, r0, 24\n\
+	cmp r1, r4\n\
+	bcc _08124E04\n\
+_08124E26:\n\
+	pop {r4-r7}\n\
+	pop {r0}\n\
+	bx r0\n\
+	.syntax divided\n");
+}
+#endif
+#ifdef NONMATCHING
+void sub_8124E2C(u16 *r0, u16 *r1, u8 r2, u8 r3, u8 r4, u8 r5)
+{
+	u16 *rg0;
+	u8 c;
+	u8 i = 0;
+	u32 offset= r3 * 0x20 + r2;
+	//rg0 = &r0[offset];
+	for (i = 0; i < r5; i++)
+	{
+		rg0 = &r0[offset + i * 0x20 ];
+		c = 0;
+		for (c = 0; c < r4; c++)
+		{
+			*(rg0++) = *(r1++);
+		}
+	}
+}
+#else
+__attribute__((naked))
+void sub_8124E2C(u16 *r0, u16 *r1, u8 r2, u8 r3, u8 r4, u8 r5)
+{
+	asm(".syntax unified\n\
+	push {r4-r7,lr}\n\
+	adds r7, r0, 0\n\
+	ldr r0, [sp, 0x14]\n\
+	ldr r4, [sp, 0x18]\n\
+	lsls r2, 24\n\
+	lsrs r2, 24\n\
+	lsls r3, 24\n\
+	lsls r0, 24\n\
+	lsrs r5, r0, 24\n\
+	lsls r4, 24\n\
+	lsrs r6, r4, 24\n\
+	movs r4, 0\n\
+	lsrs r3, 19\n\
+	adds r3, r2\n\
+	lsls r3, 1\n\
+	adds r7, r3\n\
+	cmp r4, r6\n\
+	bcs _08124E76\n\
+	_08124E50:\n\
+	lsls r0, r4, 6\n\
+	adds r2, r7, r0\n\
+	movs r3, 0\n\
+	adds r4, 0x1\n\
+	cmp r3, r5\n\
+	bcs _08124E6E\n\
+	_08124E5C:\n\
+	ldrh r0, [r1]\n\
+	strh r0, [r2]\n\
+	adds r1, 0x2\n\
+	adds r2, 0x2\n\
+	adds r0, r3, 0x1\n\
+	lsls r0, 24\n\
+	lsrs r3, r0, 24\n\
+	cmp r3, r5\n\
+	bcc _08124E5C\n\
+	_08124E6E:\n\
+	lsls r0, r4, 24\n\
+	lsrs r4, r0, 24\n\
+	cmp r4, r6\n\
+	bcc _08124E50\n\
+	_08124E76:\n\
+	pop {r4-r7}\n\
+	pop {r0}\n\
+	bx r0\n\
+	.syntax divided\n");
+}
+#endif