Changeset 11598 for code/branches/FlappyOrx_HS17/src/modules/flappyorx/FlappyOrx.cc

Timestamp:

Nov 27, 2017, 3:00:47 PM (8 years ago)

Author:

pascscha

Message:

faster asteroid spawning

File:

• code/branches/FlappyOrx_HS17/src/modules/flappyorx/FlappyOrx.cc (modified) (5 diffs)

code/branches/FlappyOrx_HS17/src/modules/flappyorx/FlappyOrx.cc

@@ -66 +66 @@
         spawnDistance=200;                  //distance between tubes
         tubeOffsetX=500;                    //tube offset (so that we can't see them spawn)
+
+        circlesUsed=0;
         setHUDTemplate("FlappyOrxHUD");
     }
@@ -127 +129 @@
         int noadd = 0;  //how many times we failed to add a new asteroid
 
-        ClearAsteroids();   //Delete Asteroids
+        clearCircles();   //Delete Circles (we use circles to make sure we don't spawn two asteroids on top of eachother)
         Circle newAsteroid = Circle();
         newAsteroid.x=x;
@@ -135 +137 @@
 
         //Fill up triangle with asteroids
-        while(r>0){
+        while(noadd<5&&circlesUsed<nCircles){
             if(slope>0)
                 newAsteroid.y=float(rand())/RAND_MAX*(150+y)-150;   //create asteroid on bottom
@@ -148 +150 @@
                 noadd++;
             else if(i==2)
-                r=0;
-            if(noadd>=5){
-                noadd=0;
-                r-=5;
-            }
+                noadd=5;
         }
     }
@@ -179 +177 @@
         //add to Queue (so that we can delete it again)
         asteroids.push(newAsteroid);
+    }
+
+    //Deletes Asteroids array which stores all the circles used to make sure no asteroids collide when spawning
+    void FlappyOrx::clearCircles(){
+        circlesUsed=0;
+        for(int i = 0; i<this->nCircles; i++){
+            circles[i].r=0;
+        }
+    }
+
+    //checks if two circles collide
+    bool FlappyOrx::circleCollision(Circle &c1, Circle &c2){
+        if(c1.r<=0 || c2.r<=0)
+            return false;
+        int x = c1.x - c2.x;
+        int y = c1.y - c2.y;
+        int r = c1.r + c2.r;
+
+        return x*x+y*y<r*r*1.5;
+    }
+
+    //Adds a circle if its not colliding
+    int FlappyOrx::addIfPossible(Circle c){
+        int i;
+        for(i=0; i<this->nCircles && this->circles[i].r!=0 && c.r>0;i++){
+            while(circleCollision(c,this->circles[i])){
+                c.r-=5; //when it collides, try to make it smaller
+            }
+        }
+        if(c.r<=0){
+            return 0;
+        }
+        circlesUsed++;
+        this->circles[i].x=c.x;
+        this->circles[i].y=c.y;
+        this->circles[i].r=c.r;
+        createAsteroid(c);
+        return 1;
     }