Start bullet spread

TODO.txt

@@ -20,6 +20,7 @@
   a build script that creates multiple binaries (with different combinations of
   compilers and settings)
 - run on raspbery pi
+- check if monsters are hit by bullets from completely up close
 
 bugs:
 

constants.h

@@ -104,6 +104,11 @@
 */
 #define SFG_HEALTH_KIT_VALUE 20
 
+/**
+  Angle in which multiple projectiles are spread, RCL_Units.
+*/
+#define SFG_PROJECTILE_SPREAD_ANGLE 100
+
 #define SFG_MAX_MONSTERS 64
 
 #define SFG_MAX_PROJECTILES 12
@@ -360,7 +365,7 @@ SFG_PROGRAM_MEMORY uint8_t SFG_weaponAttributeTable[SFG_WEAPONS_TOTAL] =
   /* m. gun   */ SFG_WEAPON_ATTRIBUTE(SFG_WEAPON_FIRE_TYPE_BULLET,300),
   /* r. laun. */ SFG_WEAPON_ATTRIBUTE(SFG_WEAPON_FIRE_TYPE_FIREBALL,900),
   /* plasma   */ SFG_WEAPON_ATTRIBUTE(SFG_WEAPON_FIRE_TYPE_PLASMA,350),
-  /* solution */ SFG_WEAPON_ATTRIBUTE(SFG_WEAPON_FIRE_TYPE_PLASMA,350)
+  /* solution */ SFG_WEAPON_ATTRIBUTE(SFG_WEAPON_FIRE_TYPE_PLASMA,750)
 };
 
 #define SFG_PROJECTILE_EXPLOSION 0

main.c

@@ -1596,8 +1596,8 @@ void SFG_gameStep()
         projectile = SFG_PROJECTILE_FIREBALL;
         break;
 
-      case SFG_WEAPON_FIRE_TYPE_BULLET:
       case SFG_WEAPON_FIRE_TYPE_SPREAD_BULLETS:
+      case SFG_WEAPON_FIRE_TYPE_BULLET:
         projectile = SFG_PROJECTILE_BULLET;
         break;
 
@@ -1609,17 +1609,38 @@ void SFG_gameStep()
         projectile = 255;
         break;
     }
-
+        
     if (projectile != SFG_PROJECTILE_NONE)
-      SFG_launchProjectile(
-        projectile,
-        SFG_player.camera.position,
-        SFG_player.camera.height,
-        RCL_angleToDirection(SFG_player.camera.direction),
-        (SFG_player.camera.shear * SFG_GET_PROJECTILE_SPEED_UPS(projectile)) / 
-          SFG_CAMERA_MAX_SHEAR_PIXELS,
-        SFG_ELEMENT_COLLISION_DISTANCE + RCL_CAMERA_COLL_RADIUS
-        );
+    {
+      uint8_t projectileCount = 1;
+
+// TODO: move bullet count to weapon table
+if (SFG_player.weapon == SFG_WEAPON_SHOTGUN)
+projectileCount = 2;
+else if (SFG_player.weapon == SFG_WEAPON_SOLUTION)
+projectileCount = 4;
+
+      uint16_t angleAdd = SFG_PROJECTILE_SPREAD_ANGLE / (projectileCount + 1);
+
+      RCL_Unit direction =
+        (SFG_player.camera.direction - SFG_PROJECTILE_SPREAD_ANGLE / 2) 
+        + angleAdd;
+
+      for (uint8_t i = 0; i < projectileCount; ++i)
+      {
+        SFG_launchProjectile(
+          projectile,
+          SFG_player.camera.position,
+          SFG_player.camera.height,
+          RCL_angleToDirection(direction),
+          (SFG_player.camera.shear * SFG_GET_PROJECTILE_SPEED_UPS(projectile)) / 
+            SFG_CAMERA_MAX_SHEAR_PIXELS,
+          SFG_ELEMENT_COLLISION_DISTANCE + RCL_CAMERA_COLL_RADIUS
+          );
+
+        direction += angleAdd;
+      }
+    }
 
     SFG_player.weaponCooldownStartFrame = SFG_gameFrame;
   }