Merge branch 'yenatch-weather'

1 files changed, 322 insertions, 0 deletions

diff --git a/src/weather.c b/src/weather.c
new file mode 100644
index 000000000..5dddb6614
--- /dev/null
+++ b/src/weather.c
@@ -0,0 +1,322 @@
+#include "global.h"
+#include "task.h"
+#include "sprite.h"
+#include "palette.h"
+
+struct Weather {
+	u8 filler_000[0x200];
+	u8 unknown_200[2][32];
+	u8 filler_240[0x480];
+	s8 unknown_6C0;
+	s8 unknown_6C1;
+	u8 unknown_6C2;
+	u8 unknown_6C3;
+	u16 unknown_6C4;
+	u8 unknown_6C6;
+	u8 unknown_6C7;
+	u8 unknown_6C8;
+	u8 unknown_6C9;
+	u8 unknown_6CA;
+	u8 unknown_6CB;
+	u8 filler_6CC[2];
+	u16 unknown_6CE;
+	u8 unknown_6D0;
+	u8 unknown_6D1;
+	u8 filler_6D2[1];
+	u8 unknown_6D3;
+	u8 unknown_6D4;
+	u8 unknown_6D5;
+	u8 filler_6D6[2];
+	u8 unknown_6D8;
+	u8 filler_6D9[1];
+	u8 unknown_6DA;
+	u8 filler_6DB[3];
+	u8 unknown_6DE;
+	u8 filler_6DF[5];
+	u8 unknown_6E4;
+	u8 filler_6E5[0x15];
+	u8 unknown_6FA;
+	u8 unknown_6FB;
+	u8 filler_6FC[4];
+	u8 unknown_700;
+	u8 filler_701[0x15];
+	u8 unknown_716;
+	u8 unknown_717;
+	u8 filler_718[0xc];
+	u8 unknown_724;
+	u8 filler_725[9];
+	u8 unknown_72E;
+};
+
+#define gWeather gUnknown_0202F7E8
+extern struct Weather gWeather;
+extern u8 *gUnknown_083970E8;
+extern u8 (*gUnknown_08396FC8[][4])(void);
+extern u8 (*gUnknown_083970B8[])(void);
+extern u8 *gUnknown_030006DC;
+extern u8 gUnknown_083970C8;
+extern u8 (*gUnknown_0202FC48)[32];
+extern u8 (*gUnknown_0202F9E8)[32];
+
+void sub_807CA34(u8);
+void sub_807C9E4(u8);
+void sub_807CB10(void);
+extern void sub_807DB64(u8, u8);
+u8 sub_807CDC4(void);
+u8 sub_807CE24(void);
+u8 sub_807CE7C(void);
+void sub_807CEBC(u8, u8, s8);
+
+extern void sub_807D1BC(u8, u8, u8, u8, u16);
+extern void sub_807D304(int, u8, u16);
+extern void sub_807D424(u8, u16);
+
+void PlayRainSoundEffect(void);
+
+void sub_807C828(void) {
+	u8 index;
+	if (!FuncIsActiveTask(&sub_807CA34)) {
+		index = AllocSpritePalette(0x1200);
+		CpuSet(&gUnknown_083970E8,
+			&gPlttBufferUnfaded[0x100 + index * 16],
+			&REG_BG0CNT);
+		sub_807CB10();
+		gWeather.unknown_6D5 = index;
+		gWeather.unknown_6D4 = AllocSpritePalette(0x1201);
+		gWeather.unknown_6DA = 0;
+		gWeather.unknown_6D8 = 0;
+		gWeather.unknown_6DE = 0;
+		gWeather.unknown_6E4 = 0;
+		gWeather.unknown_700 = 0;
+		gWeather.unknown_6FB = 0;
+		gWeather.unknown_724 = 0;
+		gWeather.unknown_716 = 0;
+		gWeather.unknown_717 = 0;
+		gWeather.unknown_72E = 0;
+		gWeather.unknown_6FA = 0;
+		sub_807DB64(16, 0);
+		gWeather.unknown_6D0 = 0;
+		gWeather.unknown_6C6 = 3;
+		gWeather.unknown_6C8 = 0;
+		gWeather.unknown_6D3 = 1;
+		gWeather.unknown_6C9 = CreateTask(&sub_807C9E4, 80);
+	}
+}
+
+void DoWeatherEffect(u8 effect) {
+	if (effect != 3 && effect != 5 && effect != 13) {
+		PlayRainSoundEffect();
+	}
+	if (gWeather.unknown_6D1 != effect && gWeather.unknown_6D0 == effect) {
+		gUnknown_08396FC8[effect][0]();
+	}
+	gWeather.unknown_6D3 = 0;
+	gWeather.unknown_6D1 = effect;
+	gWeather.unknown_6CE = 0;
+}
+
+void sub_807C988(u8 effect) {
+	PlayRainSoundEffect();
+	gWeather.unknown_6D0 = effect;
+	gWeather.unknown_6D1 = effect;
+}
+
+void sub_807C9B4(u8 effect) {
+	PlayRainSoundEffect();
+	gWeather.unknown_6D0 = effect;
+	gWeather.unknown_6D1 = effect;
+	gWeather.unknown_6C8 = 1;
+}
+
+void sub_807C9E4(u8 task) {
+	if (gWeather.unknown_6C8) {
+		gUnknown_08396FC8[gWeather.unknown_6D0][2]();
+		gTasks[task].func = &sub_807CA34;
+	}
+}
+
+void sub_807CA34(u8 task) {
+	u8 v1;
+	if (gWeather.unknown_6D0 != gWeather.unknown_6D1) {
+		v1 = gUnknown_08396FC8[gWeather.unknown_6D0][3]();
+		if (!v1) {
+			gUnknown_08396FC8[gWeather.unknown_6D1][0]();
+			gWeather.unknown_6C3 = 0; // compiler reuses v1
+			gWeather.unknown_6C6 = 0; // compiler reuses v1
+			gWeather.unknown_6D0 = gWeather.unknown_6D1;
+			gWeather.unknown_6D3 = 1;
+		}
+	} else {
+		gUnknown_08396FC8[gWeather.unknown_6D0][1]();
+	}
+	gUnknown_083970B8[gWeather.unknown_6C6]();
+}
+
+void sub_807CAE8(void) {
+	gWeather.unknown_6C1 = 0;
+	gWeather.unknown_6C2 = 0;
+}
+
+void nullsub_38(void) {
+}
+
+u32 sub_807CB0C(void) {
+	return 0;
+}
+
+void sub_807CB10(void) {
+	u16 v0;
+	u8 (*v1)[32];
+	u16 v2;
+	u16 v4;
+	u16 v5;
+	u16 v6;
+	u16 v9;
+	u32 v10;
+	u16 v11;
+	s16 dunno;
+
+	gUnknown_030006DC = &gUnknown_083970C8;
+	for (v0 = 0; v0 <= 1; v0++) {
+		if (v0 == 0) {
+			v1 = &gUnknown_0202F9E8;
+		} else {
+			v1 = &gUnknown_0202F9E8 + 0x260/4;
+			//v1 = &gUnknown_0202FC48;
+		}
+		for (v2 = 0; (u16)v2 <= 0x1f; v2++) {
+			v4 = v2 << 8;
+			if (v0 == 0) {
+				v5 = (v2 << 8) / 16;
+			} else {
+				v5 = 0;
+			}
+			v6 = 0;
+			for (; v6 <= 2; v6++) {
+				v4 = (v4 - v5);
+				v1[v6][v2] = v4 >> 8;
+			}
+			v9 = v4;
+			v10 = 0x1f00 - v4;
+			if ((0x1f00 - v4) < 0) {
+				v10 += 0xf;
+			}
+			v11 = v10 >> 4;
+			if (v2 <= 0xb) {
+				for (; v6 <= 0x12; v6++) {
+					v4 += v11;
+					dunno = v4 - v9;
+					if (dunno > 0) {
+						v4 -= dunno + ((u16)dunno >> 15) >> 1;
+					}
+					v1[v6][v2] = v4 >> 8;
+					if (v1[v6][v2] > 0x1f) {
+						v1[v6][v2] = 0x1f;
+					}
+				}
+			} else {
+				for (; v6 <= 0x12; v6++) {
+					v4 += v11;
+					v1[v6][v2] = v4 >> 8;
+					if (v1[v6][v2] > 0x1f) {
+						v1[v6][v2] = 0x1f;
+					}
+				}
+			}
+		}
+	}
+}
+
+void sub_807CC24(void) {
+	if (gWeather.unknown_6C0 == gWeather.unknown_6C1) {
+		gWeather.unknown_6C6 = 3;
+	} else {
+		if (++gWeather.unknown_6C3 >= gWeather.unknown_6C2) {
+			gWeather.unknown_6C3 = 0;
+			if (gWeather.unknown_6C0 < gWeather.unknown_6C1) {
+				gWeather.unknown_6C0++;
+			} else {
+				gWeather.unknown_6C0--;
+			}
+			sub_807CEBC(0, 0x20, gWeather.unknown_6C0);
+		}
+	}
+}
+
+void sub_807CCAC(void) {
+	if (++gWeather.unknown_6CB > 1) {
+		gWeather.unknown_6CA = 0;
+	}
+	switch (gWeather.unknown_6D0) {
+		case 3:
+		case 4:
+		case 5:
+		case 11:
+		case 13:
+			if (sub_807CDC4() == 0) {
+				gWeather.unknown_6C0 = 3;
+				gWeather.unknown_6C6 = 3;
+			}
+			break;
+		case 12:
+			if (sub_807CE24() == 0) {
+				gWeather.unknown_6C0 = -6;
+				gWeather.unknown_6C6 = 3;
+			}
+			break;
+		case 6:
+			if (sub_807CE7C() == 0) {
+				gWeather.unknown_6C0 = 0;
+				gWeather.unknown_6C6 = 3;
+			}
+			break;
+		case 7:
+		case 8:
+		case 9:
+		case 10:
+		default:
+			if (!gPaletteFade.active) {
+				gWeather.unknown_6C0 = gWeather.unknown_6C1;
+				gWeather.unknown_6C6 = 3;
+			}
+			break;
+	}
+}
+
+u8 sub_807CDC4(void) {
+	if (gWeather.unknown_6C7 == 0x10) {
+		return 0;
+	}
+	if (++gWeather.unknown_6C7 >= 0x10) {
+		sub_807CEBC(0, 0x20, 3);
+		gWeather.unknown_6C7 = 0x10;
+		return 0;
+	}
+	sub_807D1BC(0, 0x20, 3, 0x10 - gWeather.unknown_6C7, gWeather.unknown_6C4);
+	return 1;
+}
+
+u8 sub_807CE24(void) {
+	if (gWeather.unknown_6C7 == 0x10) {
+		return 0;
+	}
+	if (++gWeather.unknown_6C7 >= 0x10) {
+		sub_807CEBC(0, 0x20, -6);
+		gWeather.unknown_6C7 = 0x10;
+		return 0;
+	}
+	sub_807D304(-6, 0x10 - gWeather.unknown_6C7, gWeather.unknown_6C4);
+	return 1;
+}
+
+u8 sub_807CE7C(void) {
+	if (gWeather.unknown_6C7 == 0x10) {
+		return 0;
+	}
+	++gWeather.unknown_6C7;
+	sub_807D424(0x10 - gWeather.unknown_6C7, gWeather.unknown_6C4);
+	return 1;
+}
+
+void nullsub_39(void) {
+}