comparison projects/tank_wars/game.cpp @ 22:fbfeb5895efd matrix_gpio

Updated tank wars demo for new API

 // Location of the projectile
 bool projectileInMotion = false;
 float projectilePositionX, projectilePositionY;
 float projectileVelocityX, projectileVelocityY;
 
+// Infor needed for sound rendering
+bool collisionJustOccurred = false;
+
 // Useful utility function for generating random floating-point values
 float randomFloat(float low, float hi)
 {
 	float r = (float)random() / (float)RAND_MAX;
 	return map(r, 0, 1, low, hi);

 	if((tank1X - projectilePositionX)*(tank1X - projectilePositionX) +
 		(tank1Y - projectilePositionY)*(tank1Y - projectilePositionY)
 		<= tankRadius * tankRadius)
 	{
 		projectileInMotion = false;
+		collisionJustOccurred = true;
 		playerHasWon = 2;
 	}
 	else if((tank2X - projectilePositionX)*(tank2X - projectilePositionX) +
 		(tank2Y - projectilePositionY)*(tank2Y - projectilePositionY)
 		<= tankRadius * tankRadius)
 	{
 		projectileInMotion = false;
+		collisionJustOccurred = true;
 		playerHasWon = 1;
 	}
 	else if(projectilePositionX < 0 || projectilePositionX >= screenWidth) {
 		// Check collision whether projectile has exited the screen to the left or right
 		projectileInMotion = false;
+		collisionJustOccurred = true;
 		nextPlayersTurn();
 	}
 	else if(projectilePositionY >= groundLevel[(int)floorf(projectilePositionX)]) {
 		// Check for projectile collision with ground
 		projectileInMotion = false;
+		collisionJustOccurred = true;
 		nextPlayersTurn();
 	}
 }
 
 // Updates for game state

 }
 
 int gameStatusWinner()
 {
 	return playerHasWon;
+}
+
+bool gameStatusCollisionOccurred()
+{
+	if(collisionJustOccurred) {
+		collisionJustOccurred = false;
+		return true;
+	}
+	return false;
+}
+
+float gameStatusProjectileHeight()
+{
+	return projectilePositionY / (float)screenHeight;
 }
 
 // Clean up any allocated memory for the game
 void cleanupGame()
 {