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path: root/src/battle/anim/flash.c
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#include "global.h"
#include "rom_8077ABC.h"
#include "trig.h"
#include "battle_anim.h"
#include "sound.h"
#include "palette.h"

extern s16 gBattleAnimArgs[];
extern u8 gAnimBankAttacker;
extern u8 gAnimBankTarget;

extern struct SpriteTemplate gBattleAnimSpriteTemplate_83D6FC8;
extern struct SpriteTemplate gBattleAnimSpriteTemplate_83D6FF8;

static void sub_80CE4D4(u8 taskId);

// flash (a "ting!" flash effect.)
// Used in Moonlight.

void sub_80CE3EC(u8 taskId)
{
    int a = sub_80791A8(1, 0, 0, 0, 0, 0, 0) & 0xFFFF;
    int b;
    int c;
    int d;

    gTasks[taskId].data[0] = 0;
    gTasks[taskId].data[1] = 0;
    gTasks[taskId].data[2] = 0;
    gTasks[taskId].data[3] = a;
    gTasks[taskId].data[4] = 0;
    gTasks[taskId].data[5] = 0;
    gTasks[taskId].data[6] = 0;
    gTasks[taskId].data[7] = 13;
    gTasks[taskId].data[8] = 14;
    gTasks[taskId].data[9] = 15;
    b = sub_80792C0(1, 1, 1, 1);
    c = a | b;
    sub_8079BF4(&gTasks[taskId].data[14], &gTasks[taskId].data[15], (void*)c);
    b = b | (0x10000 << IndexOfSpritePaletteTag(0x27D2));
    d = IndexOfSpritePaletteTag(0x27D3);
    BeginNormalPaletteFade((0x10000 << d) | b, 0, 0, 0x10, 32699);
    gTasks[taskId].func = sub_80CE4D4;
    sub_80CE4D4(taskId);
}

void sub_80CE4D4(u8 taskId)
{
    struct Task* task = &gTasks[taskId];
    switch (task->data[0])
    {
    case 0:
        if (++task->data[1] > 0)
        {
            u16 color;
            u16 bitmask;
            u16 r3;
            u16 i;
            u16 j;
            task->data[1] = 0;
            if (++task->data[2] <= 15)
            {
                u16 red;
                u16 green;
                u16 blue;
                task->data[4] += task->data[7];
                task->data[5] += task->data[8];
                task->data[6] += task->data[9];
                red = task->data[4] >> 3;
                green = task->data[5] >> 3;
                blue = task->data[6] >> 3;
                color = RGB(red, green, blue);
            }
            else
            {
                color = RGB(27, 29, 31);
                task->data[0]++;
            }

            bitmask = 1;
            r3 = 0;
            for (i = 0; i <= 15; i++)
            {
                if (task->data[3] & bitmask)
                {
                    for (j = 1; j <= 15; j++)
                    {
                        gPlttBufferFaded[r3 + j] = color;
                    }
                }

                bitmask <<= 1;
                r3 += 16;
            }
        }
        break;
    case 1:
        if (!gPaletteFade.active)
        {
            u8 spriteId;
            for (spriteId = 0; spriteId < MAX_SPRITES; spriteId++)
            {
                if (gSprites[spriteId].template == &gBattleAnimSpriteTemplate_83D6FC8 || gSprites[spriteId].template == &gBattleAnimSpriteTemplate_83D6FF8)
                    gSprites[spriteId].data[0] = 1;
            }

            task->data[1] = 0;
            task->data[0]++;
        }
        break;
    case 2:
        if (++task->data[1] > 30)
        {
            BeginNormalPaletteFade((u32)sub_8079BFC(task->data[14], task->data[15]), 0, 16, 0, RGB(27, 29, 31));
            task->data[0]++;
        }
        break;
    case 3:
        if (!gPaletteFade.active)
            DestroyAnimVisualTask(taskId);
        break;
    }
}