Move camera

game.h

@@ -1,6 +1,6 @@
 /**
-  Licar game: this file implements the backend of a complete, actually playable
+  game: this file implements the backend of a complete, actually playable
-  licar game, and is meant to be included and used by specific frontends (which
+  game, and is meant to be included and used by specific frontends (which
   will handle each platform's hardware details and I/O).
 */
 
@@ -78,7 +78,7 @@ void LCR_drawPixelUnsafe(unsigned int x, unsigned int y,
 static inline void LCR_drawPixelSafe(unsigned int x, unsigned int y,
   uint_fast16_t color);
 
-#include "map.h"
+#include "racing.h"
 #include "assets.h"
 #include "renderer.h"
 
@@ -133,6 +133,22 @@ for (int i = 0; i < LCR_EFFECTIVE_RESOLUTION_X; ++i)
   for (int i = 0; i < LCR_KEYS_TOTAL; ++i)
     _LCR_keyStates[i] = LCR_keyPressed(i);
 
+LCR_SpaceUnit camPos[3];
+
+LCR_getCameraPos(camPos);
+
+#define N 10
+if (_LCR_keyStates[LCR_KEY_UP]) camPos[2] += N;
+else if (_LCR_keyStates[LCR_KEY_DOWN]) camPos[2] -= N;
+
+if (_LCR_keyStates[LCR_KEY_LEFT]) camPos[0] -= N;
+else if (_LCR_keyStates[LCR_KEY_RIGHT]) camPos[0] += N;
+
+if (_LCR_keyStates[LCR_KEY_A]) camPos[1] -= N;
+else if (_LCR_keyStates[LCR_KEY_B]) camPos[1] += N;
+
+LCR_setCameraPos(camPos);
+
 
 
 LCR_drawBackground(200 + aaa / 10);

racing.h

@@ -0,0 +1,15 @@
+/**
+  racing module: implements the racing physics and logic.
+*/
+
+#ifndef _LCR_RACING_H
+#define _LCR_RACING_H
+
+typedef int32_t LCR_SpaceUnit;   ///< game spatial units
+
+#define LCR_SQUARE_SIDE_LEN 1024 ///< length of map square in LCR_SpaceUnits
+
+#include "map.h"
+#include "tinyphysicsengine.h"
+
+#endif // guard

renderer.h

@@ -1,3 +1,7 @@
+/**
+  3D renderer: implements 3D rendering.
+*/
+
 #ifndef _LCR_RENDERER_H
 #define _LCR_RENDERER_H
 
@@ -10,6 +14,8 @@
 struct LCR_Renderer
 {
   // TODO
+
+  
 };
 
 S3L_Scene LCR_scene3D;
@@ -59,6 +65,26 @@ uint8_t LCR_rendererInit(void)
   return 1;
 }
 
+void LCR_getCameraPos(LCR_SpaceUnit pos[3])
+{
+  pos[0] = (LCR_scene3D.camera.transform.translation.x *
+    LCR_SQUARE_SIDE_LEN) / S3L_FRACTIONS_PER_UNIT;
+  pos[1] = (LCR_scene3D.camera.transform.translation.y *
+    LCR_SQUARE_SIDE_LEN) / S3L_FRACTIONS_PER_UNIT;
+  pos[2] = (LCR_scene3D.camera.transform.translation.z *
+    LCR_SQUARE_SIDE_LEN) / S3L_FRACTIONS_PER_UNIT;
+}
+
+void LCR_setCameraPos(LCR_SpaceUnit pos[3])
+{
+  LCR_scene3D.camera.transform.translation.x =
+    (pos[0] * S3L_FRACTIONS_PER_UNIT) / LCR_SQUARE_SIDE_LEN;
+  LCR_scene3D.camera.transform.translation.y =
+    (pos[1] * S3L_FRACTIONS_PER_UNIT) / LCR_SQUARE_SIDE_LEN;
+  LCR_scene3D.camera.transform.translation.z =
+    (pos[2] * S3L_FRACTIONS_PER_UNIT) / LCR_SQUARE_SIDE_LEN;
+}
+
 void LCR_render(void)
 {
   S3L_newFrame();