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/* Starshatter: The Open Source Project
Copyright (c) 2021-2024, Starshatter: The Open Source Project Contributors
Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
Copyright (c) 1997-2006, Destroyer Studios LLC.
AUTHOR: John DiCamillo
*/
#include <MagicLoad.h>
#include <Bitmap.h>
#include <Color.h>
#include <D3DXImage.h>
#include <Geometry.h>
#include <Pcx.h>
int LoadBuffer(const char* filename, BYTE*& buf, bool null_terminate)
{
buf = 0;
FILE* f = ::fopen(filename, "rb");
if (f) {
::fseek(f, 0, SEEK_END);
int len = ftell(f);
::fseek(f, 0, SEEK_SET);
if (null_terminate) {
buf = new BYTE[len+1];
if (buf)
buf[len] = 0;
}
else {
buf = new BYTE[len];
}
if (buf)
::fread(buf, len, 1, f);
::fclose(f);
return len;
}
return 0;
}
int LoadTexture(const char* fname, Bitmap*& bitmap, int type)
{
int result = 0;
if (!fname || !*fname)
return result;
bitmap = Bitmap::CheckCache(fname);
if (!bitmap) {
bool pcx_file = strstr(fname, ".pcx") || strstr(fname, ".PCX");
// handle PCX formats:
if (pcx_file) {
PcxImage pcx;
if (pcx.Load((char*) fname) == PCX_OK) {
bitmap = new Bitmap;
// 32-bit image
if (pcx.himap) {
bitmap->CopyHighColorImage(pcx.width, pcx.height, pcx.himap);
}
// 8-bit image, check for 32-bit image as well
else if (pcx.bitmap) {
bitmap->CopyImage(pcx.width, pcx.height, pcx.bitmap);
char tmp[256];
int len = strlen(fname);
bool found = false;
ZeroMemory(tmp, sizeof(tmp));
for (int i = 0; i < len && !found; i++) {
if (strstr(fname + i, ".pcx") == (fname+i)) {
found = true;
}
else {
tmp[i] = fname[i];
}
}
if (found) {
strcat_s(tmp, "+.pcx");
if (pcx.Load(tmp) == PCX_OK && pcx.himap != 0) {
bitmap->CopyHighColorImage(pcx.width, pcx.height, pcx.himap);
}
}
}
}
}
// for all other formats, use D3DX:
else {
D3DXImage d3dx;
if (d3dx.Load((char*) fname)) {
bitmap = new Bitmap;
bitmap->CopyHighColorImage(d3dx.width, d3dx.height, d3dx.image);
}
}
if (bitmap) {
LoadAlpha(fname, *bitmap, type);
bitmap->SetFilename(fname);
bitmap->SetType(type);
bitmap->MakeTexture();
Bitmap::AddToCache(bitmap);
}
}
return result;
}
int LoadAlpha(const char* name, Bitmap& bitmap, int type)
{
PcxImage pcx;
D3DXImage d3dx;
bool pcx_file = strstr(name, ".pcx") || strstr(name, ".PCX");
bool bmp_file = strstr(name, ".bmp") || strstr(name, ".BMP");
bool jpg_file = strstr(name, ".jpg") || strstr(name, ".JPG");
bool png_file = strstr(name, ".png") || strstr(name, ".PNG");
bool tga_file = strstr(name, ".tga") || strstr(name, ".TGA");
// check for an associated alpha-only (grayscale) bitmap:
char filename[256];
strcpy_s(filename, name);
char* dot = strrchr(filename, '.');
if (dot && pcx_file)
strcpy(dot, "@.pcx");
else if (dot && bmp_file)
strcpy(dot, "@.bmp");
else if (dot && jpg_file)
strcpy(dot, "@.jpg");
else if (dot && png_file)
strcpy(dot, "@.png");
else if (dot && tga_file)
strcpy(dot, "@.tga");
else
return 0;
// first try to load from current directory:
bool loaded = false;
if (pcx_file)
loaded = pcx.Load(filename) == PCX_OK;
else
loaded = d3dx.Load(filename);
// now copy the alpha values into the bitmap:
if (loaded) {
if (pcx_file && pcx.bitmap) {
bitmap.CopyAlphaImage(pcx.width, pcx.height, pcx.bitmap);
}
else if (pcx_file && pcx.himap) {
bitmap.CopyAlphaRedChannel(pcx.width, pcx.height, pcx.himap);
}
else if (d3dx.image) {
bitmap.CopyAlphaRedChannel(d3dx.width, d3dx.height, d3dx.image);
}
}
return 0;
}
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