Draw weapon

assets.h

@@ -588,6 +588,53 @@ uint8_t SFG_backgrounds[][SFG_TEXTURE_SIZE * SFG_TEXTURE_SIZE] =
   }
 };
 
+SFG_PROGRAM_MEMORY
+uint8_t SFG_weaponImages[][SFG_TEXTURE_SIZE * SFG_TEXTURE_SIZE] =
+{
+  { // 0, shotgun
+175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,
+175,175,175,175,175,175,175,175,175,175,1,1,175,175,175,175,175,175,175,175,175,
+175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,1,1,1,1,17,
+100,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,
+175,175,175,175,1,1,1,5,6,4,17,100,101,175,175,175,175,175,175,175,175,175,175,
+175,175,175,175,175,175,175,175,175,1,1,1,1,5,6,4,6,5,17,100,101,101,175,175,
+175,175,175,175,175,175,175,175,175,175,175,175,175,175,1,1,1,4,4,6,7,7,6,1,3,5,
+17,99,101,101,175,175,175,175,175,175,175,175,175,175,175,175,1,1,1,1,5,5,5,7,7,
+6,6,6,5,1,3,5,17,99,100,101,175,175,175,175,175,175,175,175,175,175,1,1,6,5,6,6,
+7,7,6,6,4,6,7,7,4,6,6,5,17,99,100,101,175,175,175,175,175,175,175,175,175,1,6,6,
+3,6,7,6,6,7,7,4,5,6,6,4,4,5,5,4,17,99,99,100,175,175,175,175,175,175,175,175,1,
+6,6,6,3,6,7,7,7,7,6,4,4,5,3,3,5,1,3,4,17,98,99,100,175,175,175,175,175,175,175,
+175,1,7,7,2,6,7,7,6,5,5,5,5,3,3,74,4,4,1,3,4,17,98,98,99,175,175,175,175,175,
+175,175,1,6,6,6,2,6,6,6,5,5,5,5,5,4,4,4,4,4,4,4,4,3,17,18,18,175,175,175,175,
+175,175,175,1,6,6,6,4,6,4,4,4,4,4,4,4,4,3,3,3,3,3,3,1,3,74,17,98,175,175,175,
+175,175,175,17,1,1,4,4,4,2,4,3,3,3,3,3,3,3,3,3,3,3,3,3,1,3,74,17,17,175,175,175,
+175,175,101,99,25,25,1,3,42,2,3,42,3,42,42,42,42,42,42,42,74,42,74,74,42,74,17,
+17,1,175,175,175,175,175,17,17,17,25,25,25,25,9,17,17,17,17,17,1,17,1,17,1,1,1,
+1,1,1,73,1,1,1,175,175,175,175,175,175,175,1,25,25,25,26,26,26,19,19,19,19,19,
+19,19,19,19,19,19,19,26,26,18,73,17,1,175,175,175,175,175,17,17,17,25,25,25,19,
+100,100,100,101,101,101,101,101,101,101,101,101,101,101,100,100,19,19,17,1,175,
+175,175,175,175,101,99,25,25,1,4,4,26,3,3,3,3,3,3,3,3,3,3,3,3,3,3,1,3,3,17,17,
+175,175,175,175,175,175,17,1,1,6,6,4,4,6,6,6,7,7,6,6,6,5,5,5,4,4,4,1,3,3,17,99,
+175,175,175,175,175,175,175,1,7,7,7,2,6,7,7,7,7,7,7,7,7,6,6,6,7,7,7,7,5,3,17,
+100,175,175,175,175,175,175,175,1,6,6,6,2,5,6,6,6,6,6,7,6,6,7,7,7,6,1,3,7,5,17,
+99,100,175,175,175,175,175,175,175,175,1,4,4,2,4,6,5,5,5,5,6,6,4,4,4,6,6,1,3,5,
+4,17,100,101,175,175,175,175,175,175,175,175,1,5,5,5,2,5,4,4,4,4,4,74,3,4,3,3,5,
+6,6,5,17,99,101,101,175,175,175,175,175,175,175,175,175,1,5,5,4,4,4,4,3,4,4,2,2,
+3,3,74,2,4,4,4,17,99,101,101,175,175,175,175,175,175,175,175,175,175,1,1,3,3,53,
+5,4,3,3,3,2,42,3,3,2,1,3,3,17,99,100,101,175,175,175,175,175,175,175,175,175,
+175,175,175,1,1,1,1,3,5,5,5,5,4,4,3,2,1,3,2,17,99,100,101,175,175,175,175,175,
+175,175,175,175,175,175,175,175,175,175,175,1,1,1,84,84,3,5,5,5,2,3,2,17,99,99,
+100,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,
+1,1,1,1,83,84,74,84,2,17,98,99,100,175,175,175,175,175,175,175,175,175,175,175,
+175,175,175,175,175,175,175,175,175,175,175,175,1,1,1,4,4,2,17,98,99,175,175,
+175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,
+175,175,175,175,1,1,1,1,17,18,175,175,175,175,175,175,175,175,175,175,175,175,
+175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,1,1,175,
+175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,175,
+175,175,175,175,175,175,175,175,175,175,175
+  }
+};
+
 uint8_t SFG_charToFontIndex(char c)
 {
   if (c >= 'a' && c <= 'z')

main.c

@@ -111,6 +111,19 @@ void SFG_init();
   #define SFG_MS_PER_FRAME 1
 #endif
 
+#define SFG_WEAPON_IMAGE_SCALE \
+  (SFG_GAME_RESOLUTION_X / (SFG_TEXTURE_SIZE * 5))
+
+#if SFG_WEAPON_IMAGE_SCALE == 0
+  #define SFG_WEAPON_IMAGE_SCALE 1
+#endif
+
+#define SFG_WEAPON_IMAGE_POSITION_X \
+  (SFG_GAME_RESOLUTION_X / 2 - (SFG_WEAPON_IMAGE_SCALE * SFG_TEXTURE_SIZE) / 2)
+
+#define SFG_WEAPON_IMAGE_POSITION_Y \
+  (SFG_GAME_RESOLUTION_Y - (SFG_WEAPON_IMAGE_SCALE * SFG_TEXTURE_SIZE))
+
 #define SFG_PLAYER_TURN_UNITS_PER_FRAME \
   ((SFG_PLAYER_TURN_SPEED * RCL_UNITS_PER_SQUARE) / (360 * SFG_FPS))
 
@@ -450,6 +463,96 @@ void SFG_pixelFunc(RCL_PixelInfo *pixel)
   }
 }
 
+/**
+  Draws image on screen, with transparency. This is faster than sprite drawing.
+  For performance sake drawing near screen edges is not pixel perfect.
+*/
+void SFG_blitImage(
+  const uint8_t *image,
+  int16_t posX,
+  int16_t posY,
+  uint8_t scale)
+{
+  if (scale == 0)
+    return;
+ 
+  uint16_t x0 = posX,
+           x1,
+           y0 = posY, 
+           y1;
+ 
+  uint8_t u0 = 0, v0 = 0;
+
+  if (posX < 0)
+  {
+    x0 = 0;
+    u0 = (-1 * posX) / scale;
+  }
+
+  posX += scale * SFG_TEXTURE_SIZE;
+
+  uint16_t limitX = SFG_GAME_RESOLUTION_X - scale;
+  uint16_t limitY = SFG_GAME_RESOLUTION_Y - scale;
+
+  x1 = posX >= 0 ?
+       (posX <= limitX ? posX : limitX)
+       : 0;
+
+  if (x1 >= SFG_GAME_RESOLUTION_X)
+    x1 = SFG_GAME_RESOLUTION_X - 1;
+
+  if (posY < 0)
+  {
+    y0 = 0;
+    v0 = (-1 * posY) / scale;
+  }
+
+  posY += scale * SFG_TEXTURE_SIZE;
+
+  y1 = posY >= 0 ?
+       (posY <= limitY ? posY : limitY)
+       : 0;
+
+  if (y1 >= SFG_GAME_RESOLUTION_Y)
+    y1 = SFG_GAME_RESOLUTION_Y - 1;
+
+  uint8_t u,v;
+
+  v = v0;
+
+  for (uint16_t y = y0; y < y1; y += scale)
+  {
+    u = u0;
+
+    for (uint16_t x = x0; x < x1; x += scale)
+    {
+      uint8_t color = SFG_getTexel(image,u,v);
+
+      if (color != SFG_TRANSPARENT_COLOR)
+      {
+        uint16_t sY = y;
+
+        for (uint8_t j = 0; j < scale; ++j)
+        {
+          uint16_t sX = x;
+
+          for (uint8_t i = 0; i < scale; ++i)
+          {
+            SFG_setGamePixel(sX,sY,color);
+            sX++;
+          }
+          
+          sY++;
+        }
+      }
+
+      u++;
+    }
+
+    v++;
+  }
+}
+
 #define SFG_MAX_SPRITE_SIZE SFG_GAME_RESOLUTION_X
 
 uint8_t SFG_spriteSamplingPoints[SFG_MAX_SPRITE_SIZE];
@@ -1257,6 +1360,9 @@ SFG_drawText("ammo",
 SFG_GAME_RESOLUTION_X - 10 - 4 * (SFG_FONT_CHARACTER_SIZE * SFG_FONT_SIZE_MEDIUM + 1)
 ,SFG_GAME_RESOLUTION_Y - 10 - SFG_FONT_CHARACTER_SIZE * SFG_FONT_SIZE_MEDIUM,SFG_FONT_SIZE_MEDIUM,7);
 
+SFG_blitImage(SFG_weaponImages[0],
+SFG_WEAPON_IMAGE_POSITION_X,SFG_WEAPON_IMAGE_POSITION_Y ,SFG_WEAPON_IMAGE_SCALE);
+
   }
 }
 

raycastlib.h

@@ -154,8 +154,8 @@
 
 #define RCL_min(a,b) ((a) < (b) ? (a) : (b))
 #define RCL_max(a,b) ((a) > (b) ? (a) : (b))
-#define RCL_nonZero(v) (v + (v == 0)) ///< To prevent zero divisions.
+#define RCL_nonZero(v) ((v) + ((v) == 0)) ///< To prevent zero divisions.
-#define RCL_zeroClamp(x) (x * (x >= 0))
+#define RCL_zeroClamp(x) ((x) * ((x) >= 0))
 #define RCL_likely(cond)    __builtin_expect(!!(cond),1) 
 #define RCL_unlikely(cond)  __builtin_expect(!!(cond),0)