whatever: Added 6 degreess of movement

sdl/whatever/.gitignore

@@ -0,0 +1 @@
+whatever

sdl/whatever/references

@@ -2,3 +2,4 @@ http://www.xeekworx.com/sdl2guides/11-sdl2guides-02
 https://wiki.libsdl.org/CategoryAPI
 https://wiki.libsdl.org/MigrationGuide
 http://www.willusher.io/sdl2%20tutorials/2013/08/17/lesson-2-dont-put-everything-in-main
+http://lazyfoo.net/tutorials/SDL/18_key_states/index.php

sdl/whatever/whatever.c

@@ -1,7 +1,8 @@
 #include "SDL2/SDL.h"
-
+#include <stdbool.h>
 //Write a function that moves an image based on which arrow keys are pressed.
 //something like
+//functionize, everything
 //void move_image(direction, image);
 
 
@@ -26,11 +27,12 @@ int main ( int argc, char *argv[] )
 	SDL_Surface* background_surface;
 	SDL_Texture* background_texture;
 	SDL_Rect top_image_dest = { 0 };
-	SDL_Event event = { 0 };
+	/*Event handler */
+	SDL_Event e;
 
 	int screen_width = 1024, screen_height = 768;
 	int top_image_width = 0, top_image_height = 0;
-
+	int movement_speed = 1;
 
 
   /* create window of size 640x480 and set title bar*/ 
@@ -81,13 +83,20 @@ int main ( int argc, char *argv[] )
 		top_image = SDL_CreateTextureFromSurface(renderer, temp);
 		SDL_FreeSurface(temp);
 		temp = NULL;
-		/* Get height and width of top_image */
-		SDL_QueryTexture(top_image, NULL, NULL, &top_image_width, &top_image_height);
 
 		if(top_image == NULL) {
 			printf("Failed to create texture from top_image: %s\n", SDL_GetError());
 			return 1;
 		}
+
+		/* Get height and width of top_image */
+		SDL_QueryTexture(top_image, NULL, NULL, &top_image_width, &top_image_height);
+		
+		/* Prepare top_image for inital position */
+		top_image_dest.x = (screen_width / 2) - (top_image_width / 2);
+		top_image_dest.y = (screen_width / 2) - (top_image_height / 2);
+		top_image_dest.w = top_image_width;
+		top_image_dest.h = top_image_height;
 	}
 
   int gameover = 0;
@@ -96,27 +105,60 @@ int main ( int argc, char *argv[] )
   while (!gameover)
   {
     /* look for an event */
-    if (SDL_PollEvent(&event)) {
+//    if (SDL_PollEvent(&event)) {
       /* an event was found */
-      switch (event.type) {
+//      switch (event.type) {
         /* close button clicked */
-        case SDL_QUIT:
+//					case SDL_QUIT:
-          gameover = 1;
+ //         gameover = 1;
-          break;
+//          break;
 
-        /* handle the keyboard */
+//          switch (event.key.keysym.sym) {
-        case SDL_KEYDOWN:
+//            case SDLK_ESCAPE:
-          switch (event.key.keysym.sym) {
+//            case SDLK_q:
-            case SDLK_ESCAPE:
+//              gameover = 1;
-            case SDLK_q:
+//              break;
+//						case SDLK_w:
+//							printf("You just pressed 'w'\n");
+//							break;
+							
+//						case SDLK_DOWN:
+//							top_image_dest.y += movement_speed;
+//							break; */
+		/*Try handling the key_events differently */
+
+		/*handle events on queue */
+		while ( SDL_PollEvent( &e ) != 0)
+		{
+			if (e.type == SDL_QUIT)
+			{
 				gameover = 1;
-              break;
-						case SDLK_w:
-							printf("You just pressed 'w'\n");
-							break;
 			}
-          break;
+
 		}
+
+		const Uint8* currentKeyStates = SDL_GetKeyboardState( NULL );
+		if (currentKeyStates[ SDL_SCANCODE_ESCAPE ] || 
+				currentKeyStates[ SDL_SCANCODE_Q ] )
+		{
+			gameover = 1;
+		}
+
+		if (currentKeyStates[ SDL_SCANCODE_LEFT ] )
+		{
+			top_image_dest.x -= movement_speed;
+		}
+		if (currentKeyStates[ SDL_SCANCODE_RIGHT ] )
+		{
+			top_image_dest.x += movement_speed;
+		}
+		if (currentKeyStates[ SDL_SCANCODE_UP ] )
+		{
+			top_image_dest.y -= movement_speed;
+		}
+		if (currentKeyStates[ SDL_SCANCODE_DOWN ] )
+		{
+			top_image_dest.y += movement_speed;
 		}
 
 
@@ -124,10 +166,6 @@ int main ( int argc, char *argv[] )
 		SDL_RenderCopy(renderer, background_texture, NULL, NULL);
 
 		/* Render entire top_image to center of screen */
-		top_image_dest.x = (screen_width / 2) - (top_image_width / 2);
-		top_image_dest.y = (screen_width / 2) - (top_image_height / 2);
-		top_image_dest.w = top_image_width;
-		top_image_dest.h = top_image_height;
 		SDL_RenderCopy(renderer, top_image, NULL, &top_image_dest);
 
 		/* Render here */