ref: d7f038fe0566c8239ec0b2ca1e56686476e82e09
dir: /src/modexlib.c/
/*
Copyright (C) 1994-1995 Apogee Software, Ltd.
Copyright (C) 2002-2015 icculus.org, GNU/Linux port
Copyright (C) 2017-2018 Steven LeVesque
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <stdarg.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <SDL2/SDL.h>
#include "modexlib.h"
#include "rt_util.h"
#include "rt_net.h" // for GamePaused
#include "myprint.h"
#include "rt_view.h"
#include "queue.h"
#include "lumpy.h"
//#include "SDL2/SDL2_rotozoom.h"
//#include <SDL2/SDL_image.h>
static void StretchMemPicture (void);
// GLOBAL VARIABLES
boolean StretchScreen=0;//bn�++
extern boolean iG_aimCross;
extern boolean sdl_fullscreen;
extern int iG_X_center;
extern int iG_Y_center;
char *iG_buf_center;
SDL_Surface *sdl_surface = NULL;
SDL_Surface *rgba_surface = NULL;
SDL_Rect screenrect;
SDL_Texture *texture = NULL;
SDL_Window * window = NULL;
static SDL_Renderer * renderer = NULL;
SDL_Surface *unstretch_sdl_surface = NULL;
static SDL_Texture *sdl_texture = NULL;
SDL_Surface *temp = NULL;
//Queue *sdl_draw_obj_queue = NULL;
boolean doRescaling = false;
int linewidth;
//int ylookup[MAXSCREENHEIGHT];
int ylookup[MAXSCREENHEIGHT];//just set to max res
byte *page1start;
byte *page2start;
byte *page3start;
int screensize;
byte *bufferofs;
byte *displayofs;
boolean graphicsmode=false;
char *bufofsTopLimit;
char *bufofsBottomLimit;
void DrawCenterAim (void);
#ifndef STUB_FUNCTION
/* rt_def.h isn't included, so I just put this here... */
#define STUB_FUNCTION fprintf(stderr,"STUB: %s at " __FILE__ ", line %d, thread %d\n",__FUNCTION__,__LINE__,getpid())
#endif
static void
resetscreen(int x, int y)
{
if(sdl_surface != NULL)
SDL_FreeSurface(sdl_surface);
sdl_surface = SDL_CreateRGBSurface(0,x,y,8,0,0,0,0);
if(rgba_surface != NULL)
SDL_FreeSurface(rgba_surface);
rgba_surface = SDL_CreateRGBSurface(0,x,y,32,0,0,0,0);
//if(texture != NULL)
//SDL_FreeTexture(texture);
texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, x, y);
SDL_RenderSetLogicalSize(renderer, x, y);
screenrect.w = x;
screenrect.h = y;
}
/*
====================
=
= GraphicsMode
=
====================
*/
void GraphicsMode ( void )
{
Uint32 flags = 0;
if (SDL_Init (SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0)
{
Error ("Could not initialize SDL\n");
}
SDL_SetRelativeMouseMode(SDL_TRUE);
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "nearest");
if (sdl_fullscreen)
flags = SDL_WINDOW_FULLSCREEN_DESKTOP;
window = SDL_CreateWindow("Rise of the Triad",
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
iGLOBAL_SCREENWIDTH, iGLOBAL_SCREENHEIGHT,
flags);
if (window == NULL)
{
Error ("Could not set video mode\n");
exit(1);
}
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
SDL_SetSurfaceRLE(sdl_surface, 1);
resetscreen(iGLOBAL_SCREENWIDTH, iGLOBAL_SCREENHEIGHT);
}
/*
====================
=
= SetTextMode
=
====================
*/
void SetTextMode ( void )
{
/*
if (SDL_WasInit(SDL_INIT_VIDEO) == SDL_INIT_VIDEO) {
if (sdl_surface != NULL) {
SDL_FreeSurface(sdl_surface);
sdl_surface = NULL;
}
*/
SDL_QuitSubSystem (SDL_INIT_VIDEO);
// }
}
/*
====================
=
= WaitVBL
=
====================
*/
void WaitVBL( void )
{
SDL_Delay (16667/1000);
}
/*
=======================
=
= VL_SetVGAPlaneMode
=
=======================
*/
void VL_SetVGAPlaneMode ( void )
{
int i,offset;
GraphicsMode();
//
// set up lookup tables
//
//bna-- linewidth = 320;
linewidth = iGLOBAL_SCREENWIDTH;
offset = 0;
for (i=0; i<iGLOBAL_SCREENHEIGHT; i++)
{
ylookup[i]=offset;
offset += linewidth;
}
// screensize=MAXSCREENHEIGHT*MAXSCREENWIDTH;
screensize=iGLOBAL_SCREENHEIGHT*iGLOBAL_SCREENWIDTH;
page1start=sdl_surface->pixels;
page2start=sdl_surface->pixels;
page3start=sdl_surface->pixels;
displayofs = page1start;
bufferofs = page2start;
iG_X_center = iGLOBAL_SCREENWIDTH / 2;
iG_Y_center = (iGLOBAL_SCREENHEIGHT / 2)+10 ;//+10 = move aim down a bit
iG_buf_center = (char *)(bufferofs + (screensize/2));//(iG_Y_center*iGLOBAL_SCREENWIDTH);//+iG_X_center;
bufofsTopLimit = (char *) (bufferofs + screensize - iGLOBAL_SCREENWIDTH);
bufofsBottomLimit = (char *) (bufferofs + iGLOBAL_SCREENWIDTH);
// start stretched
EnableScreenStretch();
XFlipPage ();
}
/*
=======================
=
= VL_CopyPlanarPage
=
=======================
*/
void VL_CopyPlanarPage ( byte * src, byte * dest )
{
memcpy(dest,src,screensize);
}
/*
=======================
=
= VL_CopyPlanarPageToMemory
=
=======================
*/
void VL_CopyPlanarPageToMemory ( byte * src, byte * dest )
{
memcpy(dest,src,screensize);
}
/*
=================
=
= VL_ClearBuffer
=
= Fill the entire video buffer with a given color
=
=================
*/
void VL_ClearBuffer (byte *buf, byte color)
{
memset((byte *)buf,color,screensize);
}
/*
=================
=
= VL_ClearVideo
=
= Fill the entire video buffer with a given color
=
=================
*/
void VL_ClearVideo (byte color)
{
memset (sdl_surface->pixels, color, iGLOBAL_SCREENWIDTH*iGLOBAL_SCREENHEIGHT);
}
/*
void RescaleAreaOfTexture(SDL_Renderer* renderer, SDL_Texture * source, SDL_Rect src, SDL_Rect dest)
{
SDL_Texture * sourceToResize = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_TARGET, src.w, src.h);
SDL_
SDL_SetRenderTarget(renderer, sourceToResize);
SDL_RenderCopy(renderer, source, &src, NULL);
// the folowing line should reset the target to default(the screen)
SDL_SetRenderTarget(renderer, NULL);
SDL_RenderCopy(renderer, sourceToResize, NULL, &dest);
SDL_DestroyTexture(sourceToResize);
}
*/
int hudRescaleFactor = 1;
void RenderSurface(void)
{
if(screenrect.w == iGLOBAL_SCREENWIDTH && screenrect.h == iGLOBAL_SCREENHEIGHT)
SDL_BlitSurface(sdl_surface, &screenrect, rgba_surface, NULL);
else
SDL_SoftStretch(sdl_surface, &screenrect, rgba_surface, NULL);
SDL_UpdateTexture(texture, NULL, rgba_surface->pixels, rgba_surface->pitch);
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, NULL);
SDL_RenderPresent(renderer);
return;
SDL_Texture * newTex = SDL_CreateTextureFromSurface(renderer, sdl_surface);
if (newTex == NULL)
{
Error("CreateTextureFromSurface failed: %s\n", SDL_GetError());
exit(1);
}
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, newTex, NULL, NULL);
/*
if (!StretchScreen && hudRescaleFactor > 1 && doRescaling)
{
if(SHOW_TOP_STATUS_BAR())
RescaleAreaOfTexture(renderer, newTex, (SDL_Rect) {(iGLOBAL_SCREENWIDTH - 320) >> 1, 0, 320, 16},
(SDL_Rect) {(iGLOBAL_SCREENWIDTH - (320 * hudRescaleFactor)) >> 1, 0, 320*hudRescaleFactor, 16*hudRescaleFactor}); //Status Bar
if(SHOW_BOTTOM_STATUS_BAR())
RescaleAreaOfTexture(renderer, newTex,(SDL_Rect) {(iGLOBAL_SCREENWIDTH - 320) >> 1, iGLOBAL_SCREENHEIGHT - 16, 320, 16},
(SDL_Rect) {(iGLOBAL_SCREENWIDTH - (320* hudRescaleFactor)) >> 1, iGLOBAL_SCREENHEIGHT - 16*hudRescaleFactor, 320*hudRescaleFactor, 16*hudRescaleFactor}); //Bottom Bar
}
*/
SDL_RenderPresent(renderer);
SDL_DestroyTexture(newTex);
}
/* C version of rt_vh_a.asm */
void VH_UpdateScreen (void)
{
// if (StretchScreen) { //bna++
// StretchMemPicture ();
// } else {
DrawCenterAim ();
// }
RenderSurface();
}
/*
=================
=
= XFlipPage
=
=================
*/
void XFlipPage ( void )
{
// if (StretchScreen) { //bna++
// StretchMemPicture ();
// } else {
DrawCenterAim ();
// }
RenderSurface();
}
void EnableScreenStretch(void)
{
if (iGLOBAL_SCREENWIDTH <= 320 || StretchScreen) return;
StretchScreen = 1;
screenrect.x = 0;
screenrect.y = 0;
screenrect.w = 320;
screenrect.h = 200;
return;
/*
displayofs = sdl_surface->pixels;
bufferofs = sdl_surface->pixels;
page1start = sdl_surface->pixels;
page2start = sdl_surface->pixels;
page3start = sdl_surface->pixels;
StretchScreen = 1;
if (unstretch_sdl_surface == NULL)
{
unstretch_sdl_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
iGLOBAL_SCREENWIDTH, iGLOBAL_SCREENHEIGHT, 8, 0, 0, 0, 0);
}
displayofs = unstretch_sdl_surface->pixels +
(displayofs - (byte *)sdl_surface->pixels);
bufferofs = unstretch_sdl_surface->pixels;
page1start = unstretch_sdl_surface->pixels;
page2start = unstretch_sdl_surface->pixels;
page3start = unstretch_sdl_surface->pixels;
StretchScreen = 1;
*/
}
void DisableScreenStretch(void)
{
if (iGLOBAL_SCREENWIDTH <= 320 || !StretchScreen) return;
StretchScreen = 0;
screenrect.x = 0;
screenrect.y = 0;
screenrect.w = iGLOBAL_SCREENWIDTH;
screenrect.h = iGLOBAL_SCREENHEIGHT;
//SDL_RenderSetLogicalSize(renderer, iGLOBAL_SCREENWIDTH, iGLOBAL_SCREENHEIGHT);
//SDL_RenderSetLogicalSize(renderer, 320, 200);
}
void EnableHudStretch(void)
{
doRescaling = 1;
}
void DisableHudStretch(void)
{
doRescaling = 0;
}
// bna section -------------------------------------------
static void StretchMemPicture (void)
{
SDL_Rect src;
SDL_Rect dest;
src.x = 0;
src.y = 0;
src.w = 320;
src.h = 200;
dest.x = 0;
dest.y = 0;
dest.w = iGLOBAL_SCREENWIDTH;
dest.h = iGLOBAL_SCREENHEIGHT;
//SDL_SoftStretch(unstretch_sdl_surface, &src, sdl_surface, &dest);
SDL_RenderSetLogicalSize(renderer, 320, 200); //help keep aspect ratio of menus so that the game doesn't look stretched
}
// bna function added start
extern boolean ingame;
extern exit_t playstate;
int iG_playerTilt;
void DrawCenterAim (void)
{
int x;
int percenthealth = (locplayerstate->health * 10) / MaxHitpointsForCharacter(locplayerstate);
int color = percenthealth < 3 ? egacolor[RED] : percenthealth < 4 ? egacolor[YELLOW] : egacolor[GREEN];
if (iG_aimCross && !GamePaused && playstate != ex_died) {
if (( ingame == true )&&(iGLOBAL_SCREENWIDTH>320)) {
if ((iG_playerTilt <0 )||(iG_playerTilt >iGLOBAL_SCREENHEIGHT/2)) {
iG_playerTilt = -(2048 - iG_playerTilt);
}
if (iGLOBAL_SCREENWIDTH == 640) {
x = iG_playerTilt;
iG_playerTilt=x/2;
}
iG_buf_center = (char *)(bufferofs + ((iG_Y_center-iG_playerTilt)*iGLOBAL_SCREENWIDTH));//+iG_X_center;
for (x=iG_X_center-10; x<=iG_X_center-4; x++) {
if ((iG_buf_center+x < bufofsTopLimit)&&(iG_buf_center+x > bufofsBottomLimit)) {
*(iG_buf_center+x) = color;
}
}
for (x=iG_X_center+4; x<=iG_X_center+10; x++) {
if ((iG_buf_center+x < bufofsTopLimit)&&(iG_buf_center+x > bufofsBottomLimit)) {
*(iG_buf_center+x) = color;
}
}
for (x=10; x>=4; x--) {
if (((iG_buf_center-(x*iGLOBAL_SCREENWIDTH)+iG_X_center) < bufofsTopLimit)&&((iG_buf_center-(x*iGLOBAL_SCREENWIDTH)+iG_X_center) > bufofsBottomLimit)) {
*(iG_buf_center-(x*iGLOBAL_SCREENWIDTH)+iG_X_center) = color;
}
}
for (x=4; x<=10; x++) {
if (((iG_buf_center+(x*iGLOBAL_SCREENWIDTH)+iG_X_center) < bufofsTopLimit)&&((iG_buf_center+(x*iGLOBAL_SCREENWIDTH)+iG_X_center) > bufofsBottomLimit)) {
*(iG_buf_center+(x*iGLOBAL_SCREENWIDTH)+iG_X_center) = color;
}
}
}
}
}
// bna function added end
// bna section -------------------------------------------
void sdl_handle_window_events(void)
{
SDL_Event event;
while(SDL_PollEvent(&event))
{
switch(event.window.type)
{
case SDL_WINDOWEVENT_FOCUS_LOST:
SDL_SetRelativeMouseMode(SDL_FALSE);
break;
case SDL_WINDOWEVENT_FOCUS_GAINED:
SDL_SetRelativeMouseMode(SDL_TRUE);
break;
case SDL_WINDOWEVENT_MINIMIZED:
SDL_SetRelativeMouseMode(SDL_FALSE);
break;
case SDL_WINDOWEVENT_RESTORED:
SDL_SetRelativeMouseMode(SDL_TRUE);
break;
case SDL_WINDOWEVENT_CLOSE:
event.type = SDL_QUIT;
SDL_PushEvent(&event);
break;
}
}
}
//extern int tics;
//void CalcTics (void);
//void DrawRotatedScreen(int cx, int cy, byte *destscreen, int angle, int scale, int masked)
void DoScreenRotateScale(int w, int h, SDL_Texture * tex, float angle, float scale)
{
SDL_RenderClear(renderer);
SDL_Rect output;
output.w = abs((int)((float)w * scale));
output.h = abs((int)((float)h * scale));
//if (output.w < MinScreenWidth)
//output.w = MinScreenWidth;
//if (output.h < MinScreenHeight)
//output.h = MinScreenHeight;
output.x = (iGLOBAL_SCREENWIDTH - output.w)>>1;
output.y = (iGLOBAL_SCREENHEIGHT - output.h)>>1;
//SDL_RenderCopyEx(renderer, tex, NULL, &output, angle, NULL, SDL_FLIP_NONE);
SDL_RenderCopy(renderer, tex, NULL, NULL);
SDL_RenderPresent(renderer);
}
SDL_Texture * GetMainSurfaceAsTexture(void)
{
return SDL_CreateTextureFromSurface(renderer, sdl_surface);
}
const SDL_Renderer * GetRenderer(void)
{
return renderer;
}