ref: af837edda43873c1435e3ca1a54034ad7ee11893
dir: /src/BulHit.cpp/
// THIS IS DECOMPILED PROPRIETARY CODE - USE AT YOUR OWN RISK.
//
// The original code belongs to Daisuke "Pixel" Amaya.
//
// Modifications and custom code are under the MIT licence.
// See LICENCE.txt for details.
#include "BulHit.h"
#include <stddef.h>
#include "WindowsWrapper.h"
#include "Bullet.h"
#include "Caret.h"
#include "CommonDefines.h"
#include "Game.h"
#include "Map.h"
#include "NpChar.h"
#include "Sound.h"
static void Vanish(BULLET *bul)
{
if (bul->code_bullet != 37 && bul->code_bullet != 38 && bul->code_bullet != 39)
PlaySoundObject(28, SOUND_MODE_PLAY);
else
SetCaret(bul->x, bul->y, CARET_PROJECTILE_DISSIPATION, DIR_UP);
bul->cond = 0;
SetCaret(bul->x, bul->y, CARET_PROJECTILE_DISSIPATION, DIR_RIGHT);
}
int JudgeHitBulletBlock(int x, int y, BULLET *bul)
{
int i;
int hit = 0;
if (bul->x - bul->blockXL < ((x * 16) + 8) * 0x200
&& bul->x + bul->blockXL > ((x * 16) - 8) * 0x200
&& bul->y - bul->blockYL < ((y * 16) + 8) * 0x200
&& bul->y + bul->blockYL > ((y * 16) - 8) * 0x200)
hit |= 0x200;
if (hit && bul->bbits & 0x60 && GetAttribute(x, y) == 0x43)
{
if (!(bul->bbits & 0x40))
bul->cond = 0;
SetCaret(bul->x, bul->y, CARET_PROJECTILE_DISSIPATION, DIR_LEFT);
PlaySoundObject(12, SOUND_MODE_PLAY);
for (i = 0; i < 4; ++i)
SetNpChar(4, x * 0x200 * 0x10, y * 0x200 * 0x10, Random(-0x200, 0x200), Random(-0x200, 0x200), 0, NULL, 0x100);
ShiftMapParts(x, y);
}
return hit;
}
int JudgeHitBulletBlock2(int x, int y, unsigned char *atrb, BULLET *bul)
{
BOOL block[4];
int workX, workY;
int hit, i;
hit = 0;
if (bul->bbits & 0x40)
{
for (i = 0; i < 4; ++i)
{
if (*atrb == 0x41 || *atrb == 0x61)
block[i] = TRUE;
else
block[i] = FALSE;
++atrb;
}
}
else
{
for (i = 0; i < 4; ++i)
{
if (*atrb == 0x41 || *atrb == 0x43 || *atrb == 0x61)
block[i] = TRUE;
else
block[i] = FALSE;
++atrb;
}
}
workX = ((x * 16) + 8) * 0x200;
workY = ((y * 16) + 8) * 0x200;
// Left wall
if (block[0] && block[2])
{
if (bul->x - bul->blockXL < workX)
hit |= 1;
}
else if (block[0] && !block[2])
{
if (bul->x - bul->blockXL < workX && bul->y - bul->blockYL < workY - (3 * 0x200))
hit |= 1;
}
else if (!block[0] && block[2])
{
if (bul->x - bul->blockXL < workX && bul->y + bul->blockYL > workY + (3 * 0x200))
hit |= 1;
}
// Right wall
if (block[1] && block[3])
{
if (bul->x + bul->blockXL > workX)
hit |= 4;
}
else if (block[1] && !block[3])
{
if (bul->x + bul->blockXL > workX && bul->y - bul->blockYL < workY - (3 * 0x200))
hit |= 4;
}
else if (!block[1] && block[3])
{
if (bul->x + bul->blockXL > workX && bul->y + bul->blockYL > workY + (3 * 0x200))
hit |= 4;
}
// Ceiling
if (block[0] && block[1])
{
if (bul->y - bul->blockYL < workY)
hit |= 2;
}
else if (block[0] && !block[1])
{
if (bul->y - bul->blockYL < workY && bul->x - bul->blockXL < workX - (3 * 0x200))
hit |= 2;
}
else if (!block[0] && block[1])
{
if (bul->y - bul->blockYL < workY && bul->x + bul->blockXL > workX + (3 * 0x200))
hit |= 2;
}
// Ground
if (block[2] && block[3])
{
if (bul->y + bul->blockYL > workY)
hit |= 8;
}
else if (block[2] && !block[3])
{
if (bul->y + bul->blockYL > workY && bul->x - bul->blockXL < workX - (3 * 0x200))
hit |= 8;
}
else if (!block[2] && block[3])
{
if (bul->y + bul->blockYL > workY && bul->x + bul->blockXL > workX + (3 * 0x200))
hit |= 8;
}
// Clip
if (bul->bbits & 8)
{
if (hit & 1)
bul->x = workX + bul->blockXL;
else if (hit & 4)
bul->x = workX - bul->blockXL;
else if (hit & 2)
bul->y = workY + bul->blockYL;
else if (hit & 8)
bul->y = workY - bul->blockYL;
}
else
{
if (hit & 0xF)
Vanish(bul);
}
return hit;
}
int JudgeHitBulletTriangleA(int x, int y, BULLET *bul)
{
int hit = 0;
if (bul->x < ((x * 16) + 8) * 0x200
&& bul->x > ((x * 16) - 8) * 0x200
&& bul->y - (2 * 0x200) < ((y * 16) * 0x200) - ((bul->x - ((x * 16) * 0x200)) / 2) + (4 * 0x200)
&& bul->y + (2 * 0x200) > ((y * 16) - 8) * 0x200)
{
if (bul->bbits & 8)
bul->y = ((y * 16) * 0x200) - ((bul->x - ((x * 16) * 0x200)) / 2) + (6 * 0x200);
else
Vanish(bul);
hit |= 0x82;
}
return hit;
}
int JudgeHitBulletTriangleB(int x, int y, BULLET *bul)
{
int hit = 0;
if (bul->x < ((x * 16) + 8) * 0x200
&& bul->x > ((x * 16) - 8) * 0x200
&& bul->y - (2 * 0x200) < ((y * 16) * 0x200) - ((bul->x - ((x * 16) * 0x200)) / 2) - (4 * 0x200)
&& bul->y + (2 * 0x200) > ((y * 16) - 8) * 0x200)
{
if (bul->bbits & 8)
bul->y = ((y * 16) * 0x200) - ((bul->x - ((x * 16) * 0x200)) / 2) - (2 * 0x200);
else
Vanish(bul);
hit |= 0x82;
}
return hit;
}
int JudgeHitBulletTriangleC(int x, int y, BULLET *bul)
{
int hit = 0;
if (bul->x < ((x * 16) + 8) * 0x200
&& bul->x > ((x * 16) - 8) * 0x200
&& bul->y - (2 * 0x200) < ((y * 16) * 0x200) + ((bul->x - ((x * 16) * 0x200)) / 2) - (4 * 0x200)
&& bul->y + (2 * 0x200) > ((y * 16) - 8) * 0x200)
{
if (bul->bbits & 8)
bul->y = ((y * 16) * 0x200) + ((bul->x - ((x * 16) * 0x200)) / 2) - (2 * 0x200);
else
Vanish(bul);
hit |= 0x42;
}
return hit;
}
int JudgeHitBulletTriangleD(int x, int y, BULLET *bul)
{
int hit = 0;
if (bul->x < ((x * 16) + 8) * 0x200
&& bul->x > ((x * 16) - 8) * 0x200
&& bul->y - (2 * 0x200) < ((y * 16) * 0x200) + ((bul->x - ((x * 16) * 0x200)) / 2) + (4 * 0x200)
&& bul->y + (2 * 0x200) > ((y * 16) - 8) * 0x200)
{
if (bul->bbits & 8)
bul->y = ((y * 16) * 0x200) + ((bul->x - ((x * 16) * 0x200)) / 2) + (6 * 0x200);
else
Vanish(bul);
hit |= 0x42;
}
return hit;
}
int JudgeHitBulletTriangleE(int x, int y, BULLET *bul)
{
int hit = 0;
if (bul->x < ((x * 16) + 8) * 0x200
&& bul->x - (1 * 0x200) > ((x * 16) - 8) * 0x200
&& bul->y + (2 * 0x200) > ((y * 16) * 0x200) + ((bul->x - ((x * 16) * 0x200)) / 2) - (4 * 0x200)
&& bul->y - (2 * 0x200) < ((y * 16) + 8) * 0x200)
{
if (bul->bbits & 8)
bul->y = ((y * 16) * 0x200) + ((bul->x - ((x * 16) * 0x200)) / 2) - (6 * 0x200);
else
Vanish(bul);
hit |= 0x28;
}
return hit;
}
int JudgeHitBulletTriangleF(int x, int y, BULLET *bul)
{
int hit = 0;
if (bul->x < ((x * 16) + 8) * 0x200
&& bul->x > ((x * 16) - 8) * 0x200
&& bul->y + (2 * 0x200) > ((y * 16) * 0x200) + ((bul->x - ((x * 16) * 0x200)) / 2) + (4 * 0x200)
&& bul->y - (2 * 0x200) < ((y * 16) + 8) * 0x200)
{
if (bul->bbits & 8)
bul->y = ((y * 16) * 0x200) + ((bul->x - ((x * 16) * 0x200)) / 2) + (2 * 0x200);
else
Vanish(bul);
hit |= 0x28;
}
return hit;
}
int JudgeHitBulletTriangleG(int x, int y, BULLET *bul)
{
int hit = 0;
if (bul->x < ((x * 16) + 8) * 0x200
&& bul->x > ((x * 16) - 8) * 0x200
&& bul->y + (2 * 0x200) > ((y * 16) * 0x200) - ((bul->x - ((x * 16) * 0x200)) / 2) + (4 * 0x200)
&& bul->y - (2 * 0x200) < ((y * 16) + 8) * 0x200)
{
if (bul->bbits & 8)
bul->y = ((y * 16) * 0x200) - ((bul->x - ((x * 16) * 0x200)) / 2) + (2 * 0x200);
else
Vanish(bul);
hit |= 0x18;
}
return hit;
}
int JudgeHitBulletTriangleH(int x, int y, BULLET *bul)
{
int hit = 0;
if (bul->x < ((x * 16) + 8) * 0x200
&& bul->x > ((x * 16) - 8) * 0x200
&& bul->y + (2 * 0x200) > ((y * 16) * 0x200) - ((bul->x - ((x * 16) * 0x200)) / 2) - (4 * 0x200)
&& bul->y - (2 * 0x200) < ((y * 16) + 8) * 0x200)
{
if (bul->bbits & 8)
bul->y = ((y * 16) * 0x200) - ((bul->x - ((x * 16) * 0x200)) / 2) - (6 * 0x200);
else
Vanish(bul);
hit |= 0x18;
}
return hit;
}
void HitBulletMap(void)
{
int x, y;
unsigned char atrb[4];
int i, j;
for (i = 0; i < BULLET_MAX; ++i)
{
int offx[4];
int offy[4];
if (!(gBul[i].cond & 0x80))
continue;
x = gBul[i].x / 0x10 / 0x200;
y = gBul[i].y / 0x10 / 0x200;
// Get surrounding tiles
offx[0] = 0;
offx[1] = 1;
offx[2] = 0;
offx[3] = 1;
offy[0] = 0;
offy[1] = 0;
offy[2] = 1;
offy[3] = 1;
atrb[0] = GetAttribute(x, y);
atrb[1] = GetAttribute(x + 1, y);
atrb[2] = GetAttribute(x, y + 1);
atrb[3] = GetAttribute(x + 1, y + 1);
// Clear hit tiles
gBul[i].flag = 0;
if (gBul[i].bbits & 4)
{
// There probably used to be commented-out code here
}
else
{
for (j = 0; j < 4; ++j)
{
if (!(gBul[i].cond & 0x80))
continue;
switch (atrb[j])
{
case 0x41:
case 0x43:
case 0x44:
case 0x61:
case 0x64:
gBul[i].flag |= JudgeHitBulletBlock(x + offx[j], y + offy[j], &gBul[i]);
break;
case 0x50:
case 0x70:
gBul[i].flag |= JudgeHitBulletTriangleA(x + offx[j], y + offy[j], &gBul[i]);
break;
case 0x51:
case 0x71:
gBul[i].flag |= JudgeHitBulletTriangleB(x + offx[j], y + offy[j], &gBul[i]);
break;
case 0x52:
case 0x72:
gBul[i].flag |= JudgeHitBulletTriangleC(x + offx[j], y + offy[j], &gBul[i]);
break;
case 0x53:
case 0x73:
gBul[i].flag |= JudgeHitBulletTriangleD(x + offx[j], y + offy[j], &gBul[i]);
break;
case 0x54:
case 0x74:
gBul[i].flag |= JudgeHitBulletTriangleE(x + offx[j], y + offy[j], &gBul[i]);
break;
case 0x55:
case 0x75:
gBul[i].flag |= JudgeHitBulletTriangleF(x + offx[j], y + offy[j], &gBul[i]);
break;
case 0x56:
case 0x76:
gBul[i].flag |= JudgeHitBulletTriangleG(x + offx[j], y + offy[j], &gBul[i]);
break;
case 0x57:
case 0x77:
gBul[i].flag |= JudgeHitBulletTriangleH(x + offx[j], y + offy[j], &gBul[i]);
break;
}
}
gBul[i].flag |= JudgeHitBulletBlock2(x, y, atrb, &gBul[i]);
}
}
}