Merge pull request #3 from axcap/master

Thanks for the port.

README.md

@@ -27,6 +27,10 @@ I have ported to Windows, X11, and Soso. Just look at (doomgeneric_win.c or doom
 
 Note that X11 port is not efficient since it generates pixmap by XDrawPoint. It can be further improved by using X11 extensions.
 
+## SDL
+
+![SDL](screenshots/sdl.png)
+
 ## Windows
 ![Windows](screenshots/windows.png)
 

doomgeneric/Makefile.sdl

@@ -0,0 +1,58 @@
+################################################################
+#
+# $Id:$
+#
+# $Log:$
+#
+
+ifeq ($(V),1)
+	VB=''
+else
+	VB=@
+endif
+
+
+SDL_CFLAGS = -D_THREAD_SAFE -I/usr/local/Cellar/sdl2/2.0.10/include/SDL2
+SDL_LIBS = -L/usr/local/Cellar/sdl2/2.0.10/lib -lSDL2
+
+
+CC=gcc  # gcc or g++
+CFLAGS+=-ggdb3 -Os $(INCLUDES) $(SDL_CFLAGS)
+LDFLAGS+=-Wl,-dead_strip
+CFLAGS+=-ggdb3 -Wall -DNORMALUNIX -DLINUX -DSNDSERV # -DUSEASM
+LIBS+=-lm -lc -lSDL2
+
+# subdirectory for objects
+OBJDIR=build
+OUTPUT=doomgeneric
+
+SRC_DOOM = i_main.o dummy.o am_map.o doomdef.o doomstat.o dstrings.o d_event.o d_items.o d_iwad.o d_loop.o d_main.o d_mode.o d_net.o f_finale.o f_wipe.o g_game.o hu_lib.o hu_stuff.o info.o i_cdmus.o i_endoom.o i_joystick.o i_scale.o i_sound.o i_system.o i_timer.o memio.o m_argv.o m_bbox.o m_cheat.o m_config.o m_controls.o m_fixed.o m_menu.o m_misc.o m_random.o p_ceilng.o p_doors.o p_enemy.o p_floor.o p_inter.o p_lights.o p_map.o p_maputl.o p_mobj.o p_plats.o p_pspr.o p_saveg.o p_setup.o p_sight.o p_spec.o p_switch.o p_telept.o p_tick.o p_user.o r_bsp.o r_data.o r_draw.o r_main.o r_plane.o r_segs.o r_sky.o r_things.o sha1.o sounds.o statdump.o st_lib.o st_stuff.o s_sound.o tables.o v_video.o wi_stuff.o w_checksum.o w_file.o w_main.o w_wad.o z_zone.o w_file_stdc.o i_input.o i_video.o doomgeneric.o doomgeneric_sdl.o
+OBJS += $(addprefix $(OBJDIR)/, $(SRC_DOOM))
+
+all:	 $(OUTPUT)
+
+clean:
+	rm -rf $(OBJDIR)
+	rm -f $(OUTPUT)
+	rm -f $(OUTPUT).gdb
+	rm -f $(OUTPUT).map
+
+$(OUTPUT):	$(OBJS)
+	@echo [Linking $@]
+	$(VB)$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) \
+	-o $(OUTPUT) $(LIBS) -Wl
+	@echo [Size]
+	-$(CROSS_COMPILE)size $(OUTPUT)
+
+$(OBJS): | $(OBJDIR)
+
+$(OBJDIR):
+	mkdir -p $(OBJDIR)
+
+$(OBJDIR)/%.o:	%.c
+	@echo [Compiling $<]
+	$(VB)$(CC) $(CFLAGS) -c $< -o $@
+
+print:
+	@echo OBJS: $(OBJS)
+

doomgeneric/doomgeneric_sdl.c

@@ -0,0 +1,157 @@
+//doomgeneric for soso os
+
+#include "doomkeys.h"
+#include "m_argv.h"
+#include "doomgeneric.h"
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include <stdbool.h>
+#include <SDL.h>
+
+SDL_Window* window = NULL;
+SDL_Renderer* renderer = NULL;
+SDL_Texture* texture;
+
+#define KEYQUEUE_SIZE 16
+
+static unsigned short s_KeyQueue[KEYQUEUE_SIZE];
+static unsigned int s_KeyQueueWriteIndex = 0;
+static unsigned int s_KeyQueueReadIndex = 0;
+
+static unsigned char convertToDoomKey(unsigned int key){
+  switch (key)
+    {
+    case SDLK_RETURN:
+      key = KEY_ENTER;
+      break;
+    case SDLK_ESCAPE:
+      key = KEY_ESCAPE;
+      break;
+    case SDLK_LEFT:
+      key = KEY_LEFTARROW;
+      break;
+    case SDLK_RIGHT:
+      key = KEY_RIGHTARROW;
+      break;
+    case SDLK_UP:
+      key = KEY_UPARROW;
+      break;
+    case SDLK_DOWN:
+      key = KEY_DOWNARROW;
+      break;
+    case SDLK_LCTRL:
+    case SDLK_RCTRL:
+      key = KEY_FIRE;
+      break;
+    case SDLK_SPACE:
+      key = KEY_USE;
+      break;
+    case SDLK_LSHIFT:
+    case SDLK_RSHIFT:
+      key = KEY_RSHIFT;
+      break;
+    default:
+      key = tolower(key);
+      break;
+    }
+
+  return key;
+}
+
+static void addKeyToQueue(int pressed, unsigned int keyCode){
+  unsigned char key = convertToDoomKey(keyCode);
+
+  unsigned short keyData = (pressed << 8) | key;
+
+  s_KeyQueue[s_KeyQueueWriteIndex] = keyData;
+  s_KeyQueueWriteIndex++;
+  s_KeyQueueWriteIndex %= KEYQUEUE_SIZE;
+}
+static void handleKeyInput(){
+  SDL_Event e;
+  while (SDL_PollEvent(&e)){
+    if (e.type == SDL_QUIT){
+      puts("Quit requested");
+      atexit(SDL_Quit);
+      exit(1);
+    }
+    if (e.type == SDL_KEYDOWN) {
+      //KeySym sym = XKeycodeToKeysym(s_Display, e.xkey.keycode, 0);
+      //printf("KeyPress:%d sym:%d\n", e.xkey.keycode, sym);
+      addKeyToQueue(1, e.key.keysym.sym);
+    } else if (e.type == SDL_KEYUP) {
+      //KeySym sym = XKeycodeToKeysym(s_Display, e.xkey.keycode, 0);
+      //printf("KeyRelease:%d sym:%d\n", e.xkey.keycode, sym);
+      addKeyToQueue(0, e.key.keysym.sym);
+    }
+  }
+}
+
+
+void DG_Init(){
+  window = SDL_CreateWindow("DOOM",
+                            SDL_WINDOWPOS_UNDEFINED,
+                            SDL_WINDOWPOS_UNDEFINED,
+                            DOOMGENERIC_RESX,
+                            DOOMGENERIC_RESY,
+                            SDL_WINDOW_SHOWN
+                            );
+
+  // Setup renderer
+  renderer =  SDL_CreateRenderer( window, -1, SDL_RENDERER_ACCELERATED);
+  // Clear winow
+  SDL_RenderClear( renderer );
+  // Render the rect to the screen
+  SDL_RenderPresent(renderer);
+
+  texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGB888, SDL_TEXTUREACCESS_TARGET, DOOMGENERIC_RESX, DOOMGENERIC_RESY);
+}
+
+void DG_DrawFrame()
+{
+  SDL_UpdateTexture(texture, NULL, DG_ScreenBuffer, DOOMGENERIC_RESX*sizeof(uint32_t));
+
+  SDL_RenderClear(renderer);
+  SDL_RenderCopy(renderer, texture, NULL, NULL);
+  SDL_RenderPresent(renderer);
+
+  handleKeyInput();
+}
+
+void DG_SleepMs(uint32_t ms)
+{
+  SDL_Delay(ms);
+}
+
+uint32_t DG_GetTicksMs()
+{
+  return SDL_GetTicks();
+}
+
+int DG_GetKey(int* pressed, unsigned char* doomKey)
+{
+  if (s_KeyQueueReadIndex == s_KeyQueueWriteIndex){
+    //key queue is empty
+    return 0;
+  }else{
+    unsigned short keyData = s_KeyQueue[s_KeyQueueReadIndex];
+    s_KeyQueueReadIndex++;
+    s_KeyQueueReadIndex %= KEYQUEUE_SIZE;
+
+    *pressed = keyData >> 8;
+    *doomKey = keyData & 0xFF;
+
+    return 1;
+  }
+
+  return 0;
+}
+
+void DG_SetWindowTitle(const char * title)
+{
+  if (window != NULL){
+    SDL_SetWindowTitle(window, title);
+  }
+}