mirror of
https://github.com/krystalgamer/spidey-decomp.git
synced 2024-11-23 13:29:48 +00:00
441 lines
8.8 KiB
C++
441 lines
8.8 KiB
C++
#include "utils.h"
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#include "m3dcolij.h"
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#include <cstdlib>
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#include <cmath>
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extern u32 gLineToItemRelated;
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extern CBody *EnvironmentalObjectList;
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extern SLineInfo gLineInfo;
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extern i32 gGetGroundRelated;
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EXPORT i32 DifficultyLevel;
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// @NotOk
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// @Test
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u32 Utils_CrapDist(const CVector& a,const CVector& b){
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i32 dX = a.vx - b.vx;
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i32 dY = a.vy - b.vy;
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i32 dZ = a.vz - b.vz;
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if (dX < 0) {
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dX = -dX;
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}
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if (dY < 0) {
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dY = -dY;
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}
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if (dZ < 0) {
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dZ = -dZ;
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}
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if (dX < dY){
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if (dY < dZ){
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return (dZ + (dX >>2) + (dY >>1)) >> 12;
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}
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if(dZ < dX){
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return ((dZ >> 2) + (dX >> 1) + dY) >> 12;
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}
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return ((dZ >> 1) + (dX >> 2) + dY) >> 12;
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}
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if (dX < dZ){
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return (dZ + (dX >>1) + (dY >>2)) >> 12;
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}
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if (dZ < dY){
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return ((dZ >> 2) + dX + (dY >>1)) >> 12;
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}
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return ((dZ >> 1) + dX + (dY >>2)) >> 12;
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}
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// @NotOk
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// @Test
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u32 Utils_CrapXZDist(const CVector& a,const CVector& b) {
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CVector tmp = a;
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tmp.vy = b.vy;
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return Utils_CrapDist(tmp, b);
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}
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int Utils_CompareStrings(const char* left, const char* right) {
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if (left == NULL && right == NULL){
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return 1;
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}
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if (left == NULL || right == NULL){
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return 0;
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}
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if (right != NULL){
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char currLeft = *left;
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char currRight = *right;
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if (currLeft >= 'A' && currLeft <= 'Z'){
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currLeft += ' ';
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}
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if (currRight >= 'A' && currRight <= 'Z'){
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currRight += ' ';
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}
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while (currLeft == currRight){
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if (currLeft != 0 && currRight != 0) {
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currLeft = *++left;
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currRight = *++right;
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if (currLeft >= 'A' && currLeft <= 'Z'){
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currLeft += ' ';
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}
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if (currRight >= 'A' && currRight <= 'Z'){
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currRight += ' ';
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}
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}
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else{
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break;
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}
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}
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if (currLeft == 0 && currRight == 0){
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return 1;
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}
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}
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return 0;
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}
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const float FOUR_NINETY_SIX = 4096.0;
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const float TWO_FOURTY_EIGHT = 2048.0;
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const float PI = 3.1415927;
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int Utils_ArcCos(int val){
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float inp = val;
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float res = acos(inp / FOUR_NINETY_SIX);
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return (res * TWO_FOURTY_EIGHT / PI);
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}
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// @Ok
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// Matching
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int Utils_CopyString(const char* src, char* dst, int maxSize)
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{
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int total = 0;
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if (*src)
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{
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while (*src){
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if (total >= maxSize)
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break;
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*dst++ = *src++;
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total++;
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}
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}
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print_if_false(total < maxSize, "Dest buffer overflow in Utils_CopyString");
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*dst = 0;
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return total;
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}
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// @Ok
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CBody* Utils_CheckObjectCollision(
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CVector* a1,
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CVector* a2,
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CBody* a3,
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CBody* a4)
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{
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CBody *result;
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CVector v9;
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v9.vx = 0;
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v9.vy = 0;
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v9.vz = 0;
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result = reinterpret_cast<CBody*>(M3dColij_LineToSphere(a1, a2, &v9, a3, a4, 4096));
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if (!result)
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{
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gLineInfo.vec_0 = *a1;
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gLineInfo.vec_C = *a2;
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M3dColij_InitLineInfo(&gLineInfo);
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gLineToItemRelated = 1;
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M3dColij_LineToItem(EnvironmentalObjectList, &gLineInfo);
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result = reinterpret_cast<CBody*>(gGetGroundRelated);
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gLineToItemRelated = 0;
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}
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return result;
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}
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// @SMALLTODO
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int Utils_GetGroundHeight(CVector*, int, int, CBody**)
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{
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return 0x14052024;
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}
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// @SMALLTODO
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int Utils_LineOfSight(CVector*, CVector*, CVector*, int)
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{
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return 0x15052024;
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}
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int catan(int a1)
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{
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return (atan((double)a1 / 4096.0) * 651.0006103515625);
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}
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// @Ok
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int Utils_CalcAim(CSVector* a1, CVector* a2, CVector* a3)
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{
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int x,y,z;
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x = (a3->vx - a2->vx) >> 12;
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y = (a3->vy - a2->vy) >> 12;
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z = (a3->vz - a2->vz) >> 12;
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if (z)
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{
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if (z > 0)
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{
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a1->vy = catan(-((x << 12) / z));
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}
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else
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{
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a1->vy = catan((x << 12) / z);
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}
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}
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else
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{
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if (x > 0)
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{
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a1->vy = -1024;
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}
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else
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{
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a1->vy = 1024;
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}
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}
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int v7 = M3dMaths_SquareRoot0(x*x + z*z);
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if (v7)
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{
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if (y > 0)
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{
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a1->vx = catan((y<<12) / v7);
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}
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else
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{
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a1->vx = -catan(-4096 * y / v7);
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}
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}
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else
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{
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a1->vx = y > 0 ? 1024 : -1024;
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}
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a1->vx &= 0xFFF;
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a1->vy &= 0xFFF;
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a1->vz = 0;
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return v7;
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}
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static int gRndRelatedOne;
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static int gRndRelatedTwo;
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static int gRndRelatedThree;
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// @Ok
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void Utils_InitialRand(int a)
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{
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gRndRelatedTwo = 0x12B9B0A1;
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gRndRelatedOne = a;
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gRndRelatedThree = 0xAA2FB3F;
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}
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// @Ok
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int Rnd(int n)
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{
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int result; // eax
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gRndRelatedOne = gRndRelatedThree + gRndRelatedOne * gRndRelatedTwo;
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gRndRelatedTwo = (gRndRelatedOne >> 4) + (gRndRelatedOne ^ gRndRelatedTwo);
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result = (n * (unsigned __int16)gRndRelatedOne) >> 16;
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gRndRelatedThree = gRndRelatedThree + (gRndRelatedOne >> 3) - 0x10101010;
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return result;
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}
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const unsigned int crc32_tab[] = {
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0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
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0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
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0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
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0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
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0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
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0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
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0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
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0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
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0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
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0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
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0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
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0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
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0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
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0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
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0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
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0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
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0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
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0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
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0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
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0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
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0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
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0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
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0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
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0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
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0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
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0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
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0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
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0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
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0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
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0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
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0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
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0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
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0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
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0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
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0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
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0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
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0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
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0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
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0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
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0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
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0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
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0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
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0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
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};
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// @Ok
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unsigned int Utils_GenerateCRC(const char* buf)
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{
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const unsigned char *p = reinterpret_cast<const unsigned char*>(buf);
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unsigned int crc;
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crc = ~0U;
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while (*p)
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{
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crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);
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}
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return crc;
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}
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// @Ok
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// @Test
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int Utils_LinearFilter(
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i32 a1,
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i32 a2,
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i32 delta)
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{
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print_if_false(delta > 0, "delta must be greater than zero");
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if (a1 > a2)
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{
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if (a1 - a2 <= delta)
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return a2;
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return a1 - delta;
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}
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else
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{
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if (a2 - a1 <= delta)
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{
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return a1;
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}
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return a1 + delta;
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}
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}
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// @MEDIUMTODO
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void Utils_GetVecFromMagDir(CVector*, int, CSVector*)
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{}
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int Utils_GetValueFromDifficultyLevel(int a1, int a2, int a3, int a4)
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{
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switch (DifficultyLevel)
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{
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case 0:
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return a1;
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case 1:
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return a2;
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case 2:
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return a3;
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default:
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return a4;
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}
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}
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// @Ok
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int Utils_XZDist(const CVector* a1, const CVector *a2)
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{
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int v2 = ((a1->vx - a2->vx) >> 12);
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v2 *= v2;
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int v3 = ((a1->vz - a2->vz) >> 12);
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v3 *= v3;
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return M3dMaths_SquareRoot0(v2 + v3);
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}
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// @MEDIUMTODO
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void Utils_RotateY(CVector*, CVector*, int)
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{}
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