Add Screen class, move video output functionality to it

6 files changed, 60 insertions, 16 deletions

diff --git a/Level.cpp b/Level.cpp
index a6cab97..27a77be 100644
--- a/Level.cpp
+++ b/Level.cpp
@@ -31,6 +31,6 @@ void Level::move() {
     //std::cout << "Level::move(): Moving level items.\n";
 }
 
-void Level::draw(SDL_Surface *screen) {
+void Level::draw(Screen *screen) {
     //std::cout << "Level::draw(): Drawing into the screen.\n";
 }
diff --git a/Level.h b/Level.h
index c2334b0..a56b734 100644
--- a/Level.h
+++ b/Level.h
@@ -2,8 +2,7 @@
 #define LEVEL_H
 
 #include "Player.h"
-#include "SDL/SDL.h"
-#include "SDL/SDL_image.h"
+#include "Screen.h"
 
 class Level {
     public:
@@ -16,7 +15,7 @@ class Level {
         void move();
 
         // Draw the current scene on the screen
-        void draw(SDL_Surface *screen);
+        void draw(Screen *screen);
 
         // The human player
         Player player;
diff --git a/Screen.cpp b/Screen.cpp
new file mode 100644
index 0000000..5a0b157
--- /dev/null
+++ b/Screen.cpp
@@ -0,0 +1,26 @@
+#include <iostream>
+#include "Screen.h"
+
+Screen::Screen() {
+    // Turn on the main screen
+    if (!(screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE)))
+        std::cout << "Error setting video mode.\n";
+
+    // Set window title
+    SDL_WM_SetCaption("Intense Marcus", NULL);
+}
+
+void Screen::blit(int x, int y, SDL_Surface* src, SDL_Surface* dst, SDL_Rect* clip) {
+    // Destination position
+    SDL_Rect pos;
+
+    pos.x = x;
+    pos.y = y;
+
+    SDL_BlitSurface(src, clip, dst, &pos);
+}
+
+void Screen::flip() {
+    if (SDL_Flip(screen) == -1)
+        std::cout << "Error flipping screen.\n";
+}
diff --git a/Screen.h b/Screen.h
new file mode 100644
index 0000000..c5672b5
--- /dev/null
+++ b/Screen.h
@@ -0,0 +1,21 @@
+#ifndef SCREEN_H
+#define SCREEN_H
+
+#include "intensemarcus.h"
+#include "SDL/SDL.h"
+
+class Screen {
+    public:
+        Screen();
+
+        /* blits src onto dst, at position x, y */
+        void blit(int x, int y, SDL_Surface* src, SDL_Surface* dst, SDL_Rect* clip = NULL);
+        /* Swap screen buffers */
+        void flip();
+
+    private:
+        // Game window
+        SDL_Surface *screen;
+};
+
+#endif
diff --git a/intensemarcus.h b/intensemarcus.h
index 7c3a330..3f7d5bf 100644
--- a/intensemarcus.h
+++ b/intensemarcus.h
@@ -1,4 +1,9 @@
+#ifndef INTENSEMARCUS_H
+#define INTENSEMARCUS_H
+
 const int SCREEN_WIDTH = 800;
 const int SCREEN_HEIGHT = 600;
 const int SCREEN_BPP = 32;
 const int FPS = 30;
+
+#endif
diff --git a/main.cpp b/main.cpp
index c2b91fe..55db293 100644
--- a/main.cpp
+++ b/main.cpp
@@ -9,8 +9,6 @@ int main(int argc, char* args[]) {
 
     // Main SDL event structure
     SDL_Event event;
-    // Ggame window
-    SDL_Surface *screen;
     // Current level number
     int levelNo = 1;
     // Main loop continues while true
@@ -18,17 +16,13 @@ int main(int argc, char* args[]) {
     // Timer start
     Uint32 startTicks = 0;
 
+    // Game window
+    Screen screen;
+
     // Initialise SDL
     if (SDL_Init(SDL_INIT_EVERYTHING) == -1)
         return 1;
 
-    // Turn on the main screen
-    if (!(screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE)))
-        return 1;
-
-    // Set window title
-    SDL_WM_SetCaption("Intense Marcus", NULL);
-
     Level level;
     level.changeLevel(levelNo);
 
@@ -50,11 +44,10 @@ int main(int argc, char* args[]) {
         level.move();
 
         // Draw level
-        level.draw(screen);
+        level.draw(&screen);
 
         // Update screen
-        if (SDL_Flip(screen) == -1)
-            return 1;
+        screen.flip();
 
         // Set FPS cap to 30
         if ((SDL_GetTicks() - startTicks) < 1000 / FPS)