ohsp

commit 6d77e0f78aa203c44661d8b88e489a65bbc4b56c
parent 995d440e28204f354f8103cdeb28d585f85b212a
Author: Amin Mesbah <mesbahamin@gmail.com>
Date:   Sun, 19 Nov 2017 21:51:21 -0800

Playback recorded input on initial state snapshot

Diffstat:
M
src/platform_sdl.c
 | 
19
+++++++++++++++++++
M
src/platform_sdl.h
 | 
4
+++-

2 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/src/platform_sdl.c b/src/platform_sdl.c
@@ -122,6 +122,7 @@ bool sdl_handle_event(SDL_Event *event, struct GameControllerInput *controller_i
                     if (input_record.state == INACTIVE)
                     {
                         printf("input_record: RECORDING\n");
+                        input_record.initial_state_recorded = false;
                         input_record.record_head = 0;
                         input_record.state = RECORDING;
                     }
@@ -130,6 +131,10 @@ bool sdl_handle_event(SDL_Event *event, struct GameControllerInput *controller_i
                         printf("input_record: INACTIVE\n");
                         input_record.state = INACTIVE;
                     }
+                    else if (input_record.state == PLAYING_BACK)
+                    {
+                        printf("Can't record while playing back\n");
+                    }
                     else
                     {
                         printf("ERROR: input_record invalid state\n");
@@ -148,6 +153,10 @@ bool sdl_handle_event(SDL_Event *event, struct GameControllerInput *controller_i
                         printf("input_record: INACTIVE\n");
                         input_record.state = INACTIVE;
                     }
+                    else if (input_record.state == RECORDING)
+                    {
+                        printf("Can't play back while recording\n");
+                    }
                     else
                     {
                         printf("ERROR: input_record invalid state\n");
@@ -321,6 +330,11 @@ int main(int argc, char *argv[])
                         // TODO: sdl_input_record(&controller_input);
                         if (input_record.record_head < INPUT_RECORD_SIZE)
                         {
+                            if (input_record.record_head == 0)
+                            {
+                                input_record.initial_state = game_state;
+                                input_record.initial_state_recorded = true;
+                            }
                             input_record.input_buffer[input_record.record_head] = controller_input;
                             ++input_record.record_head;
                         }
@@ -335,6 +349,11 @@ int main(int argc, char *argv[])
                     {
                         if (input_record.playback_head < input_record.record_head)
                         {
+                            if (input_record.playback_head == 0 && input_record.initial_state_recorded)
+                            {
+                                game_state = input_record.initial_state;
+                            }
+
                             // TODO: sdl_input_playback(&controller_input);
                             controller_input = input_record.input_buffer[input_record.playback_head];
                             ++input_record.playback_head;
diff --git a/src/platform_sdl.h b/src/platform_sdl.h
@@ -45,9 +45,11 @@ enum SDLInputRecordState
 struct SDLInputRecord
 {
     struct GameControllerInput input_buffer[INPUT_RECORD_SIZE];
-    enum SDLInputRecordState state;
+    struct GameState initial_state;
     uint64_t record_head;
     uint64_t playback_head;
+    enum SDLInputRecordState state;
+    bool initial_state_recorded;
 };
 
 #define PLATFORM_SDL_H