Rework CPs

TODO.txt

@@ -1,5 +1,18 @@
 =========== GENERAL ==============
 
+- asset system:
+  - assets are to be loaded from one BIG string consisting of substrings, each
+    substring adds a map, replay, setting etc.
+  - part of the substring will be hardcoded (default maps)
+  - optionally a frontend can extend this from a file
+- make the racing module usable by itself, e.g. to allow making tools for
+  verifying replays etc., i.e. make the module measure time, count checkpoints
+  etc.
+- racing update step should return events that happened, e.g.:
+  - CP taken
+  - crash (to play sound)
+  - finish
+  - etc.
 - car shadow?
 - sound engine: probably all SFX will be procedurally generated, ok?
 - allow slowing down in air like in TM?

assets.h

@@ -23,6 +23,7 @@ static const char *LCR_maps[] =
   "#=s0s0 #fd190" // big concrete
 
   "#+v0n0"
+  "#+w0o0"
   "#!x0n0"
 
   "#=s0B0 #fd910" // concrete wall

game.h

@@ -146,7 +146,6 @@ struct
   uint32_t nextRacingTickTime;
   uint8_t controlMode;
   uint8_t debugDraw;
-  uint8_t checkpointsTaken;
   uint32_t runTime;
 
   uint8_t musicVolume;
@@ -218,7 +217,6 @@ void LCR_gameResetRun(void)
   LCR_GameUnit carTransform[6];
 
   LCR_LOG0("resetting run");
-  LCR_game.checkpointsTaken = 0;
   LCR_mapReset();
   LCR_racingRestart();
   LCR_rendererUnmarkCPs();
@@ -262,12 +260,12 @@ void LCR_gameEnd(void)
 
 uint8_t LCR_gameStep(uint32_t time)
 {
+  LCR_GameUnit carTransform[6];
+
   LCR_LOG2("game step start");
 
   LCR_game.time = time;
 
-  LCR_GameUnit carTransform[6];
-
   for (int i = 0; i < LCR_KEYS_TOTAL; ++i)
     LCR_keyStates[i] = LCR_keyPressed(i) ?
       (LCR_keyStates[i] < 255 ? LCR_keyStates[i] + 1 : 255) : 0;
@@ -292,40 +290,19 @@ uint8_t LCR_gameStep(uint32_t time)
         (LCR_keyStates[LCR_KEY_DOWN]  ? LCR_RACING_INPUT_BACK  : 0) |
         (LCR_keyStates[LCR_KEY_LEFT]  ? LCR_RACING_INPUT_LEFT  : 0);
 
-    LCR_racingStep(input);
+    uint32_t events = LCR_racingStep(input);
 
-    LCR_racingGetCarTransform(carTransform,carTransform + 3,0);
-
-    carTransform[0] = (carTransform[0] + (LCR_GAME_UNIT * LCR_MAP_SIZE_BLOCKS)
-      / 2) / LCR_GAME_UNIT;
-    carTransform[1] = (carTransform[1] + (LCR_GAME_UNIT * LCR_MAP_SIZE_BLOCKS)
-      / 4) / (LCR_GAME_UNIT / 2);
-    carTransform[2] = (carTransform[2] + (LCR_GAME_UNIT * LCR_MAP_SIZE_BLOCKS)
-      / 2) / LCR_GAME_UNIT;
-
-    int blockIndex =
-      LCR_mapGetBlockAt(carTransform[0],carTransform[1],carTransform[2]);
-
-    if (blockIndex >= 0)
+    if (events & LCR_RACING_EVENT_CP_TAKEN)
     {
-      if (LCR_currentMap.blocks[blockIndex * LCR_BLOCK_SIZE] ==
-        LCR_BLOCK_CHECKPOINT_0)
-      {
-        LCR_LOG1("CP taken");
+      int carBlock[3];
 
-        LCR_currentMap.blocks[blockIndex * LCR_BLOCK_SIZE] =
-          LCR_BLOCK_CHECKPOINT_1;
-        LCR_rendererMarkTakenCP(
-          carTransform[0],carTransform[1],carTransform[2]);
-        LCR_game.checkpointsTaken++;
-      }
-      else if (LCR_game.checkpointsTaken == LCR_currentMap.checkpointCount &&
-        LCR_currentMap.blocks[blockIndex * LCR_BLOCK_SIZE] == LCR_BLOCK_FINISH)
-      {
-        LCR_LOG1("finished");
-
-
-      }
+      LCR_racingGetCarBlockCoords(carBlock);
+      LCR_LOG1("CP taken");
+      LCR_rendererMarkTakenCP(carBlock[0],carBlock[1],carBlock[2]);
+    }
+    else if (events & LCR_RACING_EVENT_FINISHED)
+    {
+      LCR_LOG1("finished");
     }
 
     LCR_game.runTime++;
@@ -338,9 +315,9 @@ uint8_t LCR_gameStep(uint32_t time)
   {
     LCR_LOG2("gonna render next frame");
 
-LCR_GameUnit physicsInterpolationParam = LCR_GAME_UNIT -
-  ((LCR_game.nextRacingTickTime - time) * LCR_GAME_UNIT) /
-    LCR_RACING_TICK_MS;
+    LCR_GameUnit physicsInterpolationParam = LCR_GAME_UNIT -
+      ((LCR_game.nextRacingTickTime - time) * LCR_GAME_UNIT)
+        / LCR_RACING_TICK_MS;
 
     LCR_racingGetCarTransform(carTransform,carTransform + 3,
       physicsInterpolationParam);

racing.h

@@ -559,6 +559,7 @@ void _LCR_racingUpdateCarPosRot(void)
 void LCR_racingRestart(void)
 {
   LCR_LOG0("restarting race");
+  LCR_mapReset();
 
   LCR_racing.tick = 0;
   LCR_racing.fanForce = 0;
@@ -690,6 +691,22 @@ void LCR_racingGetCarTransform(LCR_GameUnit position[3],
 #endif
 }
 
+/**
+  Gets the current block coordinates of the car, without interpolation etc.,
+  intended for checking accurately whether CP has been taken etc.
+*/
+void LCR_racingGetCarBlockCoords(int coords[3])
+{
+  coords[0] = (LCR_racing.carPositions[0].x +
+    (LCR_GAME_UNIT * LCR_MAP_SIZE_BLOCKS) / 2) / LCR_GAME_UNIT;
+
+  coords[1] = (LCR_racing.carPositions[0].y +
+    (LCR_GAME_UNIT * LCR_MAP_SIZE_BLOCKS) / 4) / (LCR_GAME_UNIT / 2);
+
+  coords[2] = (LCR_racing.carPositions[0].z +
+    (LCR_GAME_UNIT * LCR_MAP_SIZE_BLOCKS) / 2) / LCR_GAME_UNIT;
+}
+
 void _LCR_drawPhysicsDebugPixel(uint16_t x, uint16_t y, uint8_t color)
 {
   if (x > 1 && x < LCR_EFFECTIVE_RESOLUTION_X - 2 &&
@@ -1006,13 +1023,45 @@ uint32_t LCR_racingStep(unsigned int input)
   {
     TPE_bodyAccelerate(&(LCR_racing.carBody),TPE_vec3(0,LCR_racing.fanForce,0));
 
-
     LCR_racing.fanForce -= LCR_GRAVITY / LCR_FAN_FORCE_DECREASE;
 
     if (LCR_racing.fanForce < 0)
       LCR_racing.fanForce = 0;
   }
 
+  int carBlock[3];
+
+  LCR_racingGetCarBlockCoords(carBlock);
+
+  carBlock[0] = LCR_mapGetBlockAt(carBlock[0],carBlock[1],carBlock[2]);
+
+  if (carBlock[0] >= 0)
+  {
+    if (LCR_currentMap.blocks[carBlock[0] * LCR_BLOCK_SIZE] ==
+      LCR_BLOCK_CHECKPOINT_0)
+    {
+      LCR_currentMap.blocks[carBlock[0] * LCR_BLOCK_SIZE] =
+        LCR_BLOCK_CHECKPOINT_1;
+
+      result |= LCR_RACING_EVENT_CP_TAKEN;
+    }
+    else if (LCR_currentMap.blocks[carBlock[0] * LCR_BLOCK_SIZE] ==
+      LCR_BLOCK_FINISH)
+    {
+      int valid = 1;
+
+      for (int i = 0; i < LCR_currentMap.blockCount; ++i)
+        if (LCR_currentMap.blocks[i * LCR_BLOCK_SIZE] == LCR_BLOCK_CHECKPOINT_0)
+        {
+          valid = 0;
+          break;
+        }
+
+      if (valid)
+        result |= LCR_RACING_EVENT_FINISHED;
+    }
+  }
+
   LCR_LOG2("gonna step physics engine");
   TPE_worldStep(&(LCR_racing.physicsWorld));
   LCR_LOG2("stepping physics engine done");