Added init state to game, where the welcome screen is painted.

src/draw.c

@@ -9,7 +9,7 @@
 
 uint16_t bitmap_draw(   unsigned int width, unsigned int height,
                         unsigned int bytes_per_pixel,
-                        unsigned char *pixel_data){
+                        const unsigned char *pixel_data){
     
     if(bytes_per_pixel != BYTES_PER_PIXEL){
         return -1;

src/draw.h

@@ -12,6 +12,6 @@
  * @return      -1 if error 0 else
  *
  */
-uint16_t bitmap_draw(   unsigned int width, unsigned int height, unsigned int bytes_per_pixel, unsigned char *pixel_data);
+uint16_t bitmap_draw(unsigned int width, unsigned int height, unsigned int bytes_per_pixel, const unsigned char *pixel_data);
 
 #endif /* DRAW_H */

src/game.c

@@ -5,6 +5,9 @@
 
 #include "game.h"
 #include "io.h"
+#include "draw.h"
+#include "bitmap.h" //generated by gimp 
+
 
 void game_init(game_t* game, uint16_t ticks_per_sec) {
     
@@ -16,7 +19,7 @@ void game_init(game_t* game, uint16_t ticks_per_sec) {
     LCD_Clear(GUI_COLOR_BLACK);
     
     // struct init
-    game->state=prestart;
+    game->state=init;
     game->ticks_per_pixel = SPEED_SLOW;
     game->ticks_leftover = 0;
     game->ticks_per_sec = ticks_per_sec;
@@ -241,6 +244,24 @@ void game_get_color(uint16_t confbits, uint16_t* player1_color, uint16_t* player
     }
 }
 
+
+bool game_step_init(game_t* game) {
+    
+    //Draw welcome bitmap
+    bitmap_draw(gimp_image.width,gimp_image.height,gimp_image.bytes_per_pixel,gimp_image.pixel_data);
+    
+    //Wait on player to press the start button
+    while(!io_button_has_edge(BTN_START));
+    
+    //Change game state
+    game->state=prestart;
+
+    LCD_Clear(GUI_COLOR_BLACK); // Clear the background
+    
+    return true;
+}
+
+
 static const char* texts [] = {
     "Config Instructions:",
     "* Change the player colors using the switches S7-S0",
@@ -467,7 +488,9 @@ bool game_step_ended(game_t* game) {
 bool game_step(game_t* game, uint64_t delta_time) { // Calculate the next game step
 
     switch(game->state) {
-        case prestart: // If the game is in prestart state
+        case init:
+            return game_step_init(game);
+        case prestart:
             return game_step_prestart(game);
         case running:
             return game_step_running(game,delta_time);

src/game.h

@@ -57,6 +57,7 @@ typedef struct game_s{
     player_t player[PLAYER_COUNT];
 
     enum{               // Current state of the game
+        init,
         prestart,
         running,
         ended