Cosmetics: Add rainbow tunic option

code/src/actors/player.c

@@ -9,6 +9,8 @@
 #include "arrow.h"
 #include "grotto.h"
 #include "item_override.h"
+#include "colors.h"
+#include "common.h"
 
 #define PlayerActor_Init_addr 0x191844
 #define PlayerActor_Init ((ActorFunc)PlayerActor_Init_addr)
@@ -167,6 +169,9 @@ void PlayerActor_rDraw(Actor* thisx, GlobalContext* globalCtx) {
             PLAYER->sheathDLists = PlayerDListGroup_EmptySheathChildWithHylianShield;
         }
     }
+
+    Player_UpdateRainbowTunic();
+
     PlayerActor_Draw(thisx, globalCtx);
 }
 
@@ -211,3 +216,40 @@ s32 Player_CanPickUpThisActor(Actor* interactedActor) {
             return 1;
     }
 }
+
+#define TUNIC_CYCLE_FRAMES 30
+void Player_UpdateRainbowTunic(void) {
+    u8 currentTunic     = (gSaveContext.equips.equipment >> 8) & 3;
+    s16 exObjectBankIdx = Object_GetIndex(&rExtendedObjectCtx, OBJECT_CUSTOM_GENERAL_ASSETS);
+    void* cmabManager;
+    char* cmabChunk;
+    u8 redOffset, greenOffset, blueOffset;
+
+    if (gSaveContext.linkAge == AGE_CHILD) {
+        if (gSettingsContext.rainbowChildTunic == OFF) {
+            return;
+        }
+        cmabManager = ZAR_GetCMABByIndex(&rExtendedObjectCtx.status[exObjectBankIdx].zarInfo, TEXANIM_CHILD_LINK_BODY);
+        redOffset   = 0x70;
+        greenOffset = 0x88;
+        blueOffset  = 0xA0;
+    } else { // AGE_ADULT
+        if ((currentTunic == 1 && gSettingsContext.rainbowKokiriTunic == OFF) ||
+            (currentTunic == 2 && gSettingsContext.rainbowGoronTunic == OFF) ||
+            (currentTunic == 3 && gSettingsContext.rainbowZoraTunic == OFF)) {
+            return;
+        }
+        cmabManager = ZAR_GetCMABByIndex(&rExtendedObjectCtx.status[exObjectBankIdx].zarInfo, TEXANIM_LINK_BODY);
+        redOffset   = 0x70 + 8 * (currentTunic - 1);
+        greenOffset = 0x98 + 8 * (currentTunic - 1);
+        blueOffset  = 0xC0 + 8 * (currentTunic - 1);
+    }
+
+    cmabChunk = *((char**)cmabManager);
+
+    Color_RGBA8 color = Colors_GetRainbowColor(rGameplayFrames, TUNIC_CYCLE_FRAMES);
+
+    *(f32*)(cmabChunk + redOffset)   = color.r / 255.0f;
+    *(f32*)(cmabChunk + greenOffset) = color.g / 255.0f;
+    *(f32*)(cmabChunk + blueOffset)  = color.b / 255.0f;
+}

code/src/actors/player.h

@@ -9,5 +9,6 @@ void PlayerActor_rInit(Actor* thisx, GlobalContext* globalCtx);
 void PlayerActor_rUpdate(Actor* thisx, GlobalContext* globalCtx);
 void PlayerActor_rDestroy(Actor* thisx, GlobalContext* globalCtx);
 void PlayerActor_rDraw(Actor* thisx, GlobalContext* globalCtx);
+void Player_UpdateRainbowTunic(void);
 
 #endif //_PLAYER_H_

code/src/colors.c

@@ -1,17 +1,42 @@
 #include "z3D/z3D.h"
 #include "colors.h"
+#include "common.h"
 
-void Colors_ChangeRainbowColorRGBAf(Color_RGBAf* color, float speed, float max) {
-    if (color->r >= max && color->g < max && color->b <= 0)
-        color->g += speed;
-    else if (color->r > 0 && color->g >= max && color->b <= 0)
-        color->r -= speed;
-    else if (color->r <= 0 && color->g >= max && color->b < max)
-        color->b += speed;
-    else if (color->r <= 0 && color->g > 0 && color->b >= max)
-        color->g -= speed;
-    else if (color->r < max && color->g <= 0 && color->b >= max)
-        color->r += speed;
-    else if (color->r >= max && color->g <= 0 && color->b > 0)
-        color->b -= speed;
+// This function is taken from OoTR:
+// https://github.com/OoTRandomizer/OoT-Randomizer/blob/1827fbb8089d3fe3e816a297a5f3ce2c99a6e0c5/ASM/c/rainbow.c
+Color_RGBA8 Colors_GetRainbowColor(u32 curFrame, u32 stepFrames) {
+    static Color_RGBA8 cycleColors[] = {
+        { 0xE0, 0x10, 0x10, 0x00 }, // red
+        { 0xE0, 0xE0, 0x10, 0x00 }, // yellow
+        { 0x10, 0xE0, 0x10, 0x00 }, // green
+        { 0x10, 0xE0, 0xE0, 0x00 }, // cyan
+        { 0x10, 0x10, 0xE0, 0x00 }, // blue
+        { 0xE0, 0x10, 0xE0, 0x00 }, // purple
+        { 0xE0, 0x10, 0x10, 0x00 }, // red
+    };
+
+    int index;
+    float tweenA, tweenB;
+
+    index = (curFrame / stepFrames) % 6;
+
+    tweenB = ((f32)(curFrame % stepFrames) / stepFrames);
+    tweenA = 1 - tweenB;
+
+    Color_RGBA8 cA = cycleColors[index];
+    Color_RGBA8 cB = cycleColors[index + 1];
+
+    Color_RGBA8 ret;
+    ret.r = (u8)((cA.r * tweenA) + (cB.r * tweenB));
+    ret.g = (u8)((cA.g * tweenA) + (cB.g * tweenB));
+    ret.b = (u8)((cA.b * tweenA) + (cB.b * tweenB));
+    ret.a = 0xFF;
+    return ret;
+}
+
+void Colors_ChangeRainbowColorRGBA8(Color_RGBA8* color, u32 stepFrames, u8 stepOffset) {
+    Color_RGBA8 newColor = Colors_GetRainbowColor(rGameplayFrames + stepOffset * stepFrames, stepFrames);
+    color->r             = newColor.r;
+    color->g             = newColor.g;
+    color->b             = newColor.b;
 }

code/src/colors.h

@@ -9,6 +9,9 @@ typedef struct {
     f32 r, g, b, a;
 } Color_RGBAf;
 
-void Colors_ChangeRainbowColorRGBAf(Color_RGBAf* color, float speed, float max);
+Color_RGBA8 Colors_GetRainbowColor(u32 curFrame, u32 stepFrames);
+
+// Function to change rainbow color without affecting alpha component.
+void Colors_ChangeRainbowColorRGBA8(Color_RGBA8* color, u32 stepFrames, u8 stepOffset);
 
 #endif //_COLORS_H_

code/src/common.h

@@ -11,6 +11,8 @@
 #define TICKS_PER_SEC 268123480
 #define SEQ_AUDIO_BLANK 0x1000142
 
+extern u32 rGameplayFrames; // globalCtx->gameplayFrames is not accurate, it doesn't increment on file 3
+
 /// Returns 1 if the bit is set in value1 but not in value2, -1 if vice versa, and 0 if they're the same
 s8 BitCompare(u32 value1, u32 value2, u8 bit);
 

code/src/effects.c

@@ -45,35 +45,16 @@ s32 forceTrailEffectUpdate(EffectBlure* effect) {
     return effect->numElements;
 }
 
-void changeRainbowColorRGBA8(Color_RGBA8* color) {
-#define COLOR_SPEED 17 // 255 = 3*17*5
-    if (color->r == 0xFF && color->g != 0xFF && color->b == 0)
-        color->g += COLOR_SPEED;
-    else if (color->r != 0 && color->g == 0xFF && color->b == 0)
-        color->r -= COLOR_SPEED;
-    else if (color->r == 0 && color->g == 0xFF && color->b != 0xFF)
-        color->b += COLOR_SPEED;
-    else if (color->r == 0 && color->g != 0 && color->b == 0xFF)
-        color->g -= COLOR_SPEED;
-    else if (color->r != 0xFF && color->g == 0 && color->b == 0xFF)
-        color->r += COLOR_SPEED;
-    else if (color->r == 0xFF && color->g == 0 && color->b != 0)
-        color->b -= COLOR_SPEED;
-    else {
-        color->r = 0xFF;
-        color->g = 0;
-        color->b = 0;
-    }
-}
-
+#define SWORD_CYCLE_FRAMES_INNER 18
+#define SWORD_CYCLE_FRAMES_OUTER 15
 void updateSwordTrailColors(EffectBlure* effect) {
     if (gSettingsContext.rainbowSwordTrailInnerColor) {
-        changeRainbowColorRGBA8(&effect->p2StartColor);
-        changeRainbowColorRGBA8(&effect->p2EndColor);
+        Colors_ChangeRainbowColorRGBA8(&effect->p2StartColor, SWORD_CYCLE_FRAMES_INNER, 0);
+        Colors_ChangeRainbowColorRGBA8(&effect->p2EndColor, SWORD_CYCLE_FRAMES_INNER, 0);
     }
     if (gSettingsContext.rainbowSwordTrailOuterColor) {
-        changeRainbowColorRGBA8(&effect->p1StartColor);
-        changeRainbowColorRGBA8(&effect->p1EndColor);
+        Colors_ChangeRainbowColorRGBA8(&effect->p1StartColor, SWORD_CYCLE_FRAMES_OUTER, 0);
+        Colors_ChangeRainbowColorRGBA8(&effect->p1EndColor, SWORD_CYCLE_FRAMES_OUTER, 0);
     }
 }
 
@@ -101,6 +82,8 @@ s32 handleLongTrails(u8 durationSetting, EffectBlure* effect, Vec3f* p1, Vec3f*
     return 0;
 }
 
+#define BOOM_CYCLE_FRAMES_INNER 9
+#define BOOM_CYCLE_FRAMES_OUTER 7
 u32 updateBoomerangTrailEffect(EffectBlure* effect, Vec3f* p1, Vec3f* p2) {
     u8 isRainbow = gSettingsContext.boomerangTrailColorMode == TRAILCOLOR_RAINBOW ||
                    gSettingsContext.boomerangTrailColorMode == TRAILCOLOR_RAINBOW_SIMPLEMODE;
@@ -154,24 +137,26 @@ u32 updateBoomerangTrailEffect(EffectBlure* effect, Vec3f* p1, Vec3f* p2) {
     }
 
     if (isRainbow) {
-        changeRainbowColorRGBA8(&effect->p2StartColor);
-        changeRainbowColorRGBA8(&effect->p2EndColor);
-        changeRainbowColorRGBA8(&effect->p1StartColor);
-        changeRainbowColorRGBA8(&effect->p1EndColor);
+        Colors_ChangeRainbowColorRGBA8(&effect->p2StartColor, BOOM_CYCLE_FRAMES_INNER, 0);
+        Colors_ChangeRainbowColorRGBA8(&effect->p2EndColor, BOOM_CYCLE_FRAMES_INNER, 2);
+        Colors_ChangeRainbowColorRGBA8(&effect->p1StartColor, BOOM_CYCLE_FRAMES_OUTER, 0);
+        Colors_ChangeRainbowColorRGBA8(&effect->p1EndColor, BOOM_CYCLE_FRAMES_OUTER, 2);
     }
 
     return handleLongTrails(gSettingsContext.boomerangTrailDuration, effect, p1, p2);
 }
 
+#define BOMBCHU_CYCLE_FRAMES_INNER 12
+#define BOMBCHU_CYCLE_FRAMES_OUTER 9
 u32 updateChuTrailColors(EffectBlure* effect, Vec3f* p1, Vec3f* p2) {
 
     if (gSettingsContext.rainbowChuTrailInnerColor) {
-        changeRainbowColorRGBA8(&effect->p2StartColor);
-        changeRainbowColorRGBA8(&effect->p2EndColor);
+        Colors_ChangeRainbowColorRGBA8(&effect->p2StartColor, BOMBCHU_CYCLE_FRAMES_INNER, 0);
+        Colors_ChangeRainbowColorRGBA8(&effect->p2EndColor, BOMBCHU_CYCLE_FRAMES_INNER, 2);
     }
     if (gSettingsContext.rainbowChuTrailOuterColor) {
-        changeRainbowColorRGBA8(&effect->p1StartColor);
-        changeRainbowColorRGBA8(&effect->p1EndColor);
+        Colors_ChangeRainbowColorRGBA8(&effect->p1StartColor, BOMBCHU_CYCLE_FRAMES_OUTER, 0);
+        Colors_ChangeRainbowColorRGBA8(&effect->p1EndColor, BOMBCHU_CYCLE_FRAMES_OUTER, 2);
     }
 
     switch (gSettingsContext.bombchuTrailDuration) {

code/src/fairy.c

@@ -2,10 +2,12 @@
 #include "fairy.h"
 #include "settings.h"
 #include "objects.h"
+#include "common.h"
 
 #define NAVI_COLORS_ARRAY ((Color_RGBA8*)0x50C998)
-#define FAIRY_COLOR_SPEED 17   // 255 = 3*17*5
-#define FAIRY_COLOR_MAX 255.0f // max value for RGB components
+
+#define NAVI_CYCLE_FRAMES_OUTER 18
+#define NAVI_CYCLE_FRAMES_INNER 21
 
 static u8 lastTargetActorType = 0;
 // Data to manage the rainbow colors
@@ -45,31 +47,42 @@ u8 Fairy_IsNaviOuterRainbowForActorType(u8 type) {
     }
 }
 
-void Fairy_ApplyColorToTargetCMAB(void* cmab, Color_RGBA8 color) {
+void Fairy_ApplyColorToTargetCMAB(void* cmab, Color_RGBA8 color8) {
+    Color_RGBAf colorF = {
+        .r = color8.r / 255.0f,
+        .g = color8.g / 255.0f,
+        .b = color8.b / 255.0f,
+        .a = color8.a / 255.0f,
+    };
+
     // keyframe 1
-    *(f32*)(cmab + 0x6C) = color.r / 255.0f;
-    *(f32*)(cmab + 0xAC) = color.g / 255.0f;
-    *(f32*)(cmab + 0xEC) = color.b / 255.0f;
+    *(f32*)(cmab + 0x6C) = colorF.r;
+    *(f32*)(cmab + 0xAC) = colorF.g;
+    *(f32*)(cmab + 0xEC) = colorF.b;
     // keyframe 2
-    *(f32*)(cmab + 0x7C) = color.r / 255.0f;
-    *(f32*)(cmab + 0xBC) = color.g / 255.0f;
-    *(f32*)(cmab + 0xFC) = color.b / 255.0f;
+    *(f32*)(cmab + 0x7C) = colorF.r;
+    *(f32*)(cmab + 0xBC) = colorF.g;
+    *(f32*)(cmab + 0xFC) = colorF.b;
     // keyframe 3
-    *(f32*)(cmab + 0x8C)  = color.r / 255.0f;
-    *(f32*)(cmab + 0xCC)  = color.g / 255.0f;
-    *(f32*)(cmab + 0x10C) = color.b / 255.0f;
+    *(f32*)(cmab + 0x8C)  = colorF.r;
+    *(f32*)(cmab + 0xCC)  = colorF.g;
+    *(f32*)(cmab + 0x10C) = colorF.b;
 }
 
 void Fairy_UpdateRainbowNaviColors(EnElf* navi) {
     if (Fairy_IsNaviInnerRainbowForActorType(lastTargetActorType)) {
-        Colors_ChangeRainbowColorRGBAf(&(navi->innerColor), FAIRY_COLOR_SPEED, FAIRY_COLOR_MAX);
-        staticRainbowColor.r = navi->innerColor.r;
-        staticRainbowColor.g = navi->innerColor.g;
-        staticRainbowColor.b = navi->innerColor.b;
-        staticRainbowColor.a = 0xFF;
+        Color_RGBA8 newColor = Colors_GetRainbowColor(rGameplayFrames, NAVI_CYCLE_FRAMES_INNER);
+        staticRainbowColor   = newColor;
+        // Navi color components go up to 255.0f instead of 1.0f
+        navi->innerColor.r = newColor.r / 1.0f;
+        navi->innerColor.g = newColor.g / 1.0f;
+        navi->innerColor.b = newColor.b / 1.0f;
     }
     if (Fairy_IsNaviOuterRainbowForActorType(lastTargetActorType)) {
-        Colors_ChangeRainbowColorRGBAf(&(navi->outerColor), FAIRY_COLOR_SPEED, FAIRY_COLOR_MAX);
+        Color_RGBA8 newColor = Colors_GetRainbowColor(rGameplayFrames, NAVI_CYCLE_FRAMES_OUTER);
+        navi->outerColor.r   = newColor.r / 1.0f;
+        navi->outerColor.g   = newColor.g / 1.0f;
+        navi->outerColor.b   = newColor.b / 1.0f;
     }
 
     // Handle target pointer color

code/src/fairy.h

@@ -11,8 +11,6 @@ typedef struct EnElf {
     /* 0x938 */ Color_RGBAf outerColor;
 } EnElf;
 
-#define gNaviColorList ((NaviColor*)0x50C998)
-
 void Fairy_UpdateRainbowNaviColors(EnElf* navi);
 void Fairy_ResetRainbowCMABs(void);
 

code/src/main.c

@@ -19,6 +19,7 @@
 
 GlobalContext* gGlobalContext = NULL;
 static u8 rRandomizerInit     = 0;
+u32 rGameplayFrames           = 0;
 
 void set_GlobalContext(GlobalContext* globalCtx) {
     gGlobalContext = globalCtx;
@@ -39,6 +40,7 @@ void before_GlobalContext_Update(GlobalContext* globalCtx) {
         set_GlobalContext(globalCtx);
         rRandomizerInit = 1;
     }
+    rGameplayFrames++;
     ItemOverride_Update();
     ActorSetup_Extra();
     Model_UpdateAll(globalCtx);

code/src/settings.h

@@ -627,6 +627,10 @@ typedef struct {
     u8 freeCamControl;
 
     u8 customTunicColors;
+    u8 rainbowChildTunic;
+    u8 rainbowKokiriTunic;
+    u8 rainbowGoronTunic;
+    u8 rainbowZoraTunic;
     u8 customNaviColors;
     u8 rainbowIdleNaviInnerColor;
     u8 rainbowNPCNaviInnerColor;

source/cosmetics.cpp

@@ -54,7 +54,7 @@ const std::array<std::string_view, 13> gauntletColors = {
     "5B8A06", // Lime
     "800080", // Purple
 };
-const std::array<std::string_view, 28> tunicColors = {
+const std::array<std::string_view, 29> tunicColors = {
     "168A0E", // Kokiri Green
     "96000E", // Goron Red
     "002A8E", // Zora Blue
@@ -83,6 +83,7 @@ const std::array<std::string_view, 28> tunicColors = {
     "52314F", // Mauve
     "505A59", // Silver
     "F16F16", // Gold
+    "FF0000", // Rainbow (placeholder)
 };
 const std::array<std::string_view, 20> naviInnerColors = {
     "FFFFFF", // White

source/cosmetics.hpp

@@ -36,7 +36,7 @@ struct Color_RGBA8 {
 };
 
 extern const std::array<std::string_view, 13> gauntletColors;
-extern const std::array<std::string_view, 28> tunicColors;
+extern const std::array<std::string_view, 29> tunicColors;
 extern const std::array<std::string_view, 20> naviInnerColors;
 extern const std::array<std::string_view, 20> naviOuterColors;
 extern const std::array<std::string_view, 13> weaponTrailColors;