Merge remote-tracking branch 'origin/camera-follow'

Makefile

@@ -1,12 +1,12 @@
 #-*- Makefile -*-
 
-OBJS = main.o player.o dt.o block.o entity.o
+OBJS = main.o player.o dt.o block.o entity.o camera.o
 
 CC = g++
 
 COMPILER_FLAGS = -w
 
-LINKER_FLAGS = -lSDL2 -std=gnu++11
+LINKER_FLAGS = -lSDL2 -std=gnu++11 -lSDL2_image
 
 OBJ_NAME = bin/main
 
@@ -17,14 +17,17 @@ all: $(OBJS)
 main.o: main.cpp
 	$(CC) -c main.cpp $(LINKER_FLAGS)
 
-player.o: player.cpp player.h entity.h
+player.o: player.cpp player.h entity.o
 	$(CC) -c player.cpp -lm $(LINKER_FLAGS)
 
 dt.o: dt.cpp dt.h
 	$(CC) -c dt.cpp $(LINKER_FLAGS)
 
-block.o: block.cpp block.h entity.h
+block.o: block.cpp block.h entity.o
 	$(CC) -c block.cpp $(LINKER_FLAGS)
 
 entity.o: entity.cpp entity.h
 	$(CC) -c entity.cpp $(LINKER_FLAGS)
+
+camera.o: camera.cpp camera.h
+	$(CC) -c camera.cpp

block.cpp

@@ -1,13 +1,19 @@
 #include"block.h"
 
-void Block::print(int x, int y, int w, int h,SDL_Renderer* renderer){
-	posX = x;
-	posY = y;
-	szW = w;
-	szH = h;
+Block::Block(int x, int y, int w, int h,SDL_Renderer** render){
+	//set the rectangle dimensions
+	rect = {x,y,w,h};
 
-	rect = {posX, posY, szW, szH};
-
-	SDL_SetRenderDrawColor(renderer,0,0xFF,0,0xFF);
-	SDL_RenderFillRect(renderer,&rect); 
+	//Set the renderer pointer
+	renderer = render;
 }
+
+void Block::print(int cameraX){
+	//New SDL_Rect to make the objects follow the camera
+	SDL_Rect cameraFix = rect;
+	cameraFix.x -= cameraX;
+
+	//Set render color and render the rectangle
+	SDL_SetRenderDrawColor(*renderer,0,0xFF,0,0xFF);
+	SDL_RenderFillRect(*renderer,&cameraFix); 
+};

block.h

@@ -11,7 +11,10 @@ class Entity;
 
 class Block: public Entity{
 	public:
-		void print(int x,int y,int w,int h,SDL_Renderer* renderer);
+		Block(int x,int y,int w,int h,SDL_Renderer** render);
+		void print(int cameraX);
+	private:
+		SDL_Renderer** renderer;
 };
 
 #endif

camera.cpp

@@ -0,0 +1,25 @@
+//Camera class body
+
+#include"camera.h"
+
+Camera::Camera(int mapWidth,int screenWidth){
+	mW = mapWidth;
+	scW = screenWidth;
+}
+
+void Camera::update(int playerX, int playerY){
+	//Make the camera when the player hits the middle of the screem
+	if(playerX >= scW/2) posX = playerX - scW/2;
+	else posX = 0;
+	if(playerX >= mW - scW/2) posX = mW - scW;
+
+	//posY = playerY;
+};
+
+int Camera::getPosX(){
+	return posX;
+};
+
+int Camera::getPosY(){
+	return posY;
+};

camera.h

@@ -0,0 +1,17 @@
+//Camera class header
+
+#ifndef __CAMERA_H_INCLUDED__
+#define __CAMERA_H_INCLUDED__
+
+class Camera{
+	public:
+		Camera(int mapWidth,int screenWidth);
+		void update(int playerX, int playerY);
+		int getPosX();
+		int getPosY();
+	private:
+		int posX, posY;
+		int mW, scW;
+};
+
+#endif

main.cpp

@@ -2,8 +2,10 @@
 
 #include<iostream>
 #include<SDL2/SDL.h>
+//#include<SDL2/SDL_image.h>
 #include"player.h"
 #include"block.h"
+#include"camera.h"
 
 const int SCREEN_WIDTH = 640;
 const int SCREEN_HEIGHT = 480;
@@ -17,10 +19,6 @@ const int sz = SCREEN_WIDTH/16;
 void init();
 bool loadMedia();
 void close();
-void gameLoop();
-
-Player posweg;
-Block ground;
 
 bool loadMedia(){
 	bool success = true;
@@ -46,28 +44,6 @@ void close(){
 	SDL_Quit();
 }
 
-void gameLoop(){
-	SDL_SetRenderDrawColor(gRenderer,0,0,0,0xFF);
-	SDL_RenderClear(gRenderer);
-
-	Block wallA;
-	Block wallB;
-	Block wallC;
-	wallA.print(8*sz,SCREEN_HEIGHT-sz*5,sz*2,sz*2,gRenderer);
-	wallB.print(4*sz,SCREEN_HEIGHT-sz*3,sz,sz*2,gRenderer);
-	wallC.print(6*sz,SCREEN_HEIGHT-sz*3,sz,sz*2,gRenderer);
-	ground.print(0,SCREEN_HEIGHT-sz,SCREEN_WIDTH,sz,gRenderer);
-	posweg.print();
-
-
-	posweg.check(wallA.getRectangle());	
-	posweg.check(wallB.getRectangle());
-	posweg.check(wallC.getRectangle());
-	posweg.check(ground.getRectangle());	
-
-	SDL_RenderPresent(gRenderer);
-}
-
 int main(int argc, char* args[]){
 	init();
 	loadMedia();
@@ -75,6 +51,15 @@ int main(int argc, char* args[]){
 	bool quit = false;
 	SDL_Event e;
 
+	Player posweg;
+	Camera camera(36*sz,SCREEN_WIDTH);
+	
+	Block wallA(8*sz,SCREEN_HEIGHT-sz*5,sz*2,sz*2,&gRenderer);
+	Block wallB(4*sz,SCREEN_HEIGHT-sz*3,sz,sz*2,&gRenderer);
+	Block wallC(6*sz,SCREEN_HEIGHT-sz*3,sz,sz*2,&gRenderer);
+	Block ground(0,SCREEN_HEIGHT-sz,SCREEN_WIDTH,sz,&gRenderer);
+	Block ground2(SCREEN_WIDTH+sz*4,SCREEN_HEIGHT-sz,SCREEN_WIDTH,sz,&gRenderer);
+
 	posweg.init(100,100,sz,sz,&gRenderer);
 
 	while(!quit){
@@ -83,8 +68,27 @@ int main(int argc, char* args[]){
 				quit = true;
 			}
 		}
+		SDL_SetRenderDrawColor(gRenderer,0,0,0,0xFF);
+		SDL_RenderClear(gRenderer);
 		
-		gameLoop();
+		camera.update(posweg.getRectangle().x,posweg.getRectangle().y);
+	
+		posweg.print(camera.getPosX());
+		std::cout << posweg.getRectangle().x << std::endl;
+		
+		wallA.print(camera.getPosX());
+		wallB.print(camera.getPosX());
+		wallC.print(camera.getPosX());
+		ground.print(camera.getPosX());
+		ground2.print(camera.getPosX());
+	
+		posweg.check(wallA.getRectangle());	
+		posweg.check(wallB.getRectangle());
+		posweg.check(wallC.getRectangle());
+		posweg.check(ground.getRectangle());	
+		posweg.check(ground2.getRectangle());	
+
+		SDL_RenderPresent(gRenderer);
 	}
 	close();
 	return 0;

player.cpp

@@ -2,11 +2,13 @@
 
 #include"player.h"
 
-void Player::print(){	
-	rect = {posX,posY,szW,szH};
+void Player::print(int cameraX){	
+
+	SDL_Rect cameraFix = rect;
+	cameraFix.x -= cameraX;
 
 	SDL_SetRenderDrawColor(*renderer,0xFF,0,0,0xFF);
-	SDL_RenderFillRect(*renderer, &rect);
+	SDL_RenderFillRect(*renderer, &cameraFix);
 
 	oldPosX = posX;
 	oldPosY = posY;		
@@ -93,6 +95,8 @@ void Player::move(){
 	//Convert and set new int position
 	posX += static_cast<int>(x);
 	posY -= static_cast<int>(y+0.5);
+
+	rect = {posX,posY,szW,szH};
 };
 
 int Player::check(SDL_Rect rectA){

player.h

@@ -13,7 +13,7 @@ class Entity;
 
 class Player: public Entity{
 	public:
-		void print();
+		void print(int cameraX);
 		int check(SDL_Rect rectB);
 		void init(int x, int y,int w, int h,SDL_Renderer** render);
 		//SDL_Rect getRectangle();