Block clumping implementation

Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

BlockClump.cpp

@@ -8,6 +8,10 @@ void BlockClump::addBlock(int col){
     blocks.push_back(Block({(float)col*12,0}));
 }
 
+void BlockClump::addBlock(vi2d offset){
+    blocks.push_back(Block(offset));
+}
+
 vf2d BlockClump::getBlockPosition(Block&b){
     return {b.pos.x,b.pos.y+y};
 }

BlockClump.h

@@ -13,6 +13,7 @@ class BlockClump{
     BlockClump(){}
     std::vector<Block>&getBlocks();
     void addBlock(int col);
+    void addBlock(vi2d offset);
     //Get a block's position relative to this block clump.
     vf2d getBlockPosition(Block&b);
 };

Board.cpp

@@ -14,6 +14,16 @@ Board::Board(vi2d boardSize,float gravity,float spawnRate)
 void Board::spawnBlock(int col){
     BlockClump c=BlockClump();
     c.addBlock(col);
+    if (game->coinFlip(game->gen)==0) {
+        if (col>0) {
+            c.addBlock(col-1);
+        }
+    }
+    if (game->coinFlip(game->gen)==0) {
+        if (col<boardSize.x-1) {
+            c.addBlock(col+1);
+        }
+    }
     clumps.push_back(c);
 }
 
@@ -23,4 +33,13 @@ std::vector<Block>&Board::getBlocks(int col){
 
 std::vector<BlockClump>&Board::getBlockClumps(){
     return clumps;
+}
+
+void Board::removeClump(int ind){
+    BlockClump&c=clumps[ind];
+    for (Block b:c.getBlocks()){
+        cols[b.pos.x/12].push_back(b);
+        cols[b.pos.x/12][cols[b.pos.x/12].size()-1].pos=c.getBlockPosition(b);
+    }
+    clumps.erase(clumps.begin()+ind);
 }

Board.h

@@ -19,5 +19,6 @@ class Board{
     void spawnBlock(int col);
     std::vector<Block>&getBlocks(int col);
     std::vector<BlockClump>&getBlockClumps();
+    void removeClump(int ind);
 };
 #endif

Meteos.h

@@ -10,7 +10,7 @@ class Meteos : public olc::PixelGameEngine{
         sAppName="Meteos";
     }
     float lastBlockSpawn=0.0f;
-    std::uniform_int_distribution<> randBlockPos;
+    std::uniform_int_distribution<> randBlockPos,coinFlip;
     std::mt19937 gen;
     Board gameBoard;
     bool OnUserCreate()override;

main.cpp

@@ -12,6 +12,7 @@ bool Meteos::OnUserCreate()
 	std::random_device rd;  //Will be used to obtain a seed for the random number engine
     gen=std::mt19937(rd()); //Standard mersenne_twister_engine seeded with rd()
     randBlockPos=std::uniform_int_distribution<>(0, 9);
+    coinFlip=std::uniform_int_distribution<>(0, 1);
 
 	gameBoard=Board({10,14},12.f,3.0f);
 	return true;
@@ -40,28 +41,28 @@ bool Meteos::OnUserUpdate(float fElapsedTime)
 		for (int j=0;j<c.getBlocks().size();j++){
 			Block&b=c.getBlocks()[j];
 			int col=b.pos.x/12;
-			for (int k=0;k<gameBoard.getBlocks(j).size();k++){
+			for (int k=0;k<gameBoard.getBlocks(col).size();k++){
-				Block&b2=gameBoard.getBlocks(j)[k];
+				Block&b2=gameBoard.getBlocks(col)[k];
 				if (c.getBlockPosition(b).y+12>=b2.pos.y&&c.getBlockPosition(b).y<=b2.pos.y+12){
 					c.y=b2.pos.y-12;
 					c.vspeed=0;
-					gameBoard.removeClump(c);
+					gameBoard.removeClump(i--);
-					i--;
+					goto nextClump;
 				}
 			}
 			if (c.getBlockPosition(b).y>=gameBoard.yBottom) {
 				c.y=gameBoard.yBottom;
 				c.vspeed=0;
-				gameBoard.removeClump(c);
+				gameBoard.removeClump(i--);
-				i--;
+				goto nextClump;
 			}
 		}
-		applyVelocity:
 		for (int j=0;j<c.getBlocks().size();j++){
 			Block&b=c.getBlocks()[j];
 			c.y+=c.vspeed*fElapsedTime;
 			FillRectDecal(c.getBlockPosition(b)+gameBoard.drawOffset,{12,12},DARK_GREEN);
 		}
+		nextClump:;
 	}
 	for (int i=0;i<gameBoard.boardSize.x;i++){
 		for (int y=0;y<gameBoard.getBlocks(i).size();y++){