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//-----------------------------------------------------------------------------
// Name: common.cpp
// Developer: Wolfire Games LLC
// Description:
// License: Read below
//-----------------------------------------------------------------------------
//
// Copyright 2022 Wolfire Games LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//-----------------------------------------------------------------------------
#include "common.h"
#include <cstdarg>
#include <stdint.h>
void FormatString(char* buf, int buf_size, const char* fmt, ...) {
va_list args;
va_start(args, fmt);
VFormatString(buf, buf_size, fmt, args);
va_end(args);
}
// From http://www.cse.yorku.ca/~oz/hash.html
// djb2 hash function
int djb2_hash(unsigned char* str) {
uint32_t hash_val = 5381;
int c;
while ((c = *str++)) {
hash_val = ((hash_val << 5) + hash_val) + c; /* hash * 33 + c */
}
return *((int*)&hash_val);
}
// From http://www.cse.yorku.ca/~oz/hash.html
// djb2 hash function
int djb2_hash_len(unsigned char* str, int len) {
uint32_t hash_val = 5381;
for (int i = 0; i < len; ++i) {
hash_val = ((hash_val << 5) + hash_val) + *str++; /* hash * 33 + c */
}
return *((int*)&hash_val);
}
float MoveTowards(float val, float target, float amount) {
float diff = val - target;
if (diff < 0.0f) {
diff = -diff;
}
if (diff < amount) {
return target;
} else if (val > target) {
return val - amount;
} else {
return val + amount;
}
}
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