From f0c29770025265462138836bc3f12c368a84fe3c Mon Sep 17 00:00:00 2001
From: Miloslav Ciz <drummyfish@disroot.org>
Date: Thu, 21 Nov 2024 21:33:36 +0100
Subject: [PATCH] Take checkpoints

---
 assets.h |  3 +--
 game.h   | 25 ++++++++++++++++++++++++-
 racing.h |  1 -
 3 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/assets.h b/assets.h
index 044f215..7a777c8 100644
--- a/assets.h
+++ b/assets.h
@@ -60,8 +60,7 @@ LCR_MAP_BLOCK(LCR_BLOCK_RAMP_STEEP,4,4,6,LCR_BLOCK_MATERIAL_CONCRETE,LCR_BLOCK_T
 LCR_MAP_BLOCK(LCR_BLOCK_RAMP_CURVED_PLAT,4,5,6,LCR_BLOCK_MATERIAL_CONCRETE,LCR_BLOCK_TRANSFORM_FLIP_V | LCR_BLOCK_TRANSFORM_ROT_180),
 LCR_MAP_BLOCK(LCR_BLOCK_RAMP_CURVED_PLAT,3,5,6,LCR_BLOCK_MATERIAL_CONCRETE,LCR_BLOCK_TRANSFORM_FLIP_V | LCR_BLOCK_TRANSFORM_ROT_180),
 
-LCR_MAP_BLOCK(LCR_BLOCK_CHECKPOINT_0,3,2,4,LCR_BLOCK_MATERIAL_CONCRETE,0),
-LCR_MAP_BLOCK(LCR_BLOCK_FINISH,3,2,2,LCR_BLOCK_MATERIAL_CONCRETE,0),
+LCR_MAP_BLOCK(LCR_BLOCK_CHECKPOINT_0,3,1,4,LCR_BLOCK_MATERIAL_CONCRETE,0),
 
 /*
 LCR_MAP_BLOCK(LCR_BLOCK_FULL,2,1,9,LCR_BLOCK_MATERIAL_CONCRETE,0),
diff --git a/game.h b/game.h
index 107a6d2..ba5b095 100644
--- a/game.h
+++ b/game.h
@@ -11,6 +11,7 @@
   - LCR_GameUnit: data type, abstract unit of the game (racing module). One map
     square is LCR_GAME_UNITs long, a full angle is also LCR_GAME_UNITs.
   - LCR_GAME_UNIT: Size of one game square and full angle in LCR_GameUnits.
+      Square height is only half of this.
   - S3L_Unit: data type, small3dlib's unit. May change with renderer change.
   - S3L_F: small3dlib's value representing 1.0.
   - LCR_RENDERER_UNIT: for the renderer one map square is this many S3L_Units.
@@ -188,6 +189,8 @@ uint8_t LCR_gameStep(uint32_t time)
 {
   LCR_LOG2("game step start");
 
+  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;
@@ -221,6 +224,27 @@ if ((LCR_racing.tick % 32) == 0)
         (LCR_keyStates[LCR_KEY_LEFT]  ? LCR_RACING_INPUT_LEFT  : 0);
 
     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 && LCR_currentMap.blocks[blockIndex * LCR_BLOCK_SIZE] ==
+      LCR_BLOCK_CHECKPOINT_0)
+    {
+      LCR_currentMap.blocks[blockIndex * LCR_BLOCK_SIZE] =
+        LCR_BLOCK_CHECKPOINT_1;
+      LCR_rendererMarkTakenCP(
+        carTransform[0],carTransform[1],carTransform[2]);
+    }
+
     LCR_game.nextRacingTickTime += LCR_RACING_TICK_MS; 
   }
 
@@ -234,7 +258,6 @@ LCR_GameUnit physicsInterpolationParam = LCR_GAME_UNIT -
   ((LCR_game.nextRacingTickTime - time) * LCR_GAME_UNIT) /
     LCR_RACING_TICK_MS;
 
-    LCR_GameUnit carTransform[6];
     LCR_racingGetCarTransform(carTransform,carTransform + 3,
       physicsInterpolationParam);
 
diff --git a/racing.h b/racing.h
index 3fd02b5..d95946b 100644
--- a/racing.h
+++ b/racing.h
@@ -580,7 +580,6 @@ int _LCR_racingCarShapeOK(void)
 */
 uint32_t LCR_racingStep(unsigned int input)
 {
-printf("---------\n");
   LCR_LOG2("racing step start");
 
   uint32_t result = 0;