/**
* \brief Performs setup and re-initialization needed before each new game.
*
* Resets the player score, resets variables for drawing columns, sets a new random ghost color, moves the player back to the starting position, erases columns from last game,
* turns scrolling back on and makes the player visible again.
*/
static void gameSetup()
{
randomSky();
//fill screen with tile 1 again to erase menu
ClearVram();
for(u8 i = 0; i < 4; i++) //reset column data with 0's to start fresh
{
pipe_x[i] = 0;
pipe_y[i] = 0;
}
for(u8 k = 0; k < 32; k++)
{
bg[k] = 1;
}
//reset all score data from last game to 0
score = 0;//score = 0;
score_ones=0;
score_tens=0;
score_hundreds=0;
fake_x = 80; //reset how far we've flown
player_x = 80; //reset player position
player_y = 40;
yspeed = 0; //make sure we start at 0 speed
//draw the background
for(u8 i = 0; i < VRAM_TILES_H; i++)
{
pipe_alarm=2; //make sure we never draw a column while we're drawing the starting screen
loadNextStripe(); //go through each column and draw the background
}
//select a random color for the ghost and set the appropriate sprite
ghost_color=(prng()%3); //the ghost has 3 frames and 3 color options, so we set the active sprite to the frame count (0 - 2) + the color (0, 3, or 6) to get the correct sprite
ghost_color=(ghost_color+(ghost_color<<1));
current_sprite = player_sprites[current_frame+ghost_color];
//assign and move the player image to start the new game
MoveSprite(0,player_x,player_y,3,3);
MapSprite2(0,current_sprite,0);
//make player visible
SetSpriteVisibility(true);
//reset variables to draw new columns correctly
current_pipe=0;
build_pipe=0;
pipe_alarm = 1;
pipe_col_drawn = 0;
//turn scrolling on to begin the game
scrollingOn=true;
}
/**
* \brief Handles screen scrolling.
*/
void processScrollSpeed(void)
{
if(scrollingOn)
{
Scroll(1,0); //scroll background tiles left 1 pixel horizontally and 0 vertically
scroll++; //track how far we've scrolled the background since loading a new column of tiles
fake_x++; //track how far player has flown since start of game, used for column collision checking
//if we've scrolled at least one whole tile since loading a new column of tiles
if(scroll>=8){
loadNextStripe(); //load a new column of background tiles to the far right off screen
scroll=0; //reset pixels scrolled since we last loaded new tiles
}
}
}
unsigned char processControls(void){
static unsigned char ov=4,scroll=0;
static int lastbuttons=0;
unsigned int joy=ReadJoypad(0);
if(joy&BTN_A){
if(action!=ACTION_JUMP){
action=ACTION_JUMP;
frame=0;
jmpPos=0;
}
}else if(joy&BTN_X){
Scroll(0,1);
// while(ReadJoypad(0)!=0);
}else if(joy&BTN_Y){
Scroll(0,-1);
// while(ReadJoypad(0)!=0);
}else if(joy&BTN_SR){
// Scroll(1,0);
// while(ReadJoypad(0)!=0);
}else if(joy&BTN_SL){
// Scroll(-1,0);
// while(ReadJoypad(0)!=0);
}else if(joy&BTN_UP){
//if(sy==0)sy=(VRAM_TILES_V*8);
//sy--;
//while(ReadJoypad(0)!=0);
}else if(joy&BTN_DOWN){
//sy++;
//if(sy>=(VRAM_TILES_V*8))sy=0;
// while(ReadJoypad(0)!=0);
}
if(joy&BTN_LEFT){
//while(ReadJoypad(0)!=0);
if(action==ACTION_IDLE){
action=ACTION_WALK;
dx=-1;
frame=0;
stopping=false;
walkFrame=0;
lastWalkDir=BTN_LEFT;
sprDir=-1;
}
}else if(joy&BTN_RIGHT){
//while(ReadJoypad(0)!=0);
if(action==ACTION_IDLE){
action=ACTION_WALK;
dx=1;
frame=0;
stopping=false;
walkFrame=0;
lastWalkDir=BTN_RIGHT;
sprDir=1;
}
if(sx>=110){
if(joy&BTN_B){
Scroll(2,0);
scroll+=2;
}else{
Scroll(1,0);
scroll++;
}
if(scroll>=8){
loadNextStripe();
scroll=0;
}
}
}
if(joy&BTN_START){
ov++;
if(ov>OVERLAY_LINES)ov=0;
Screen.overlayHeight=ov;
while(ReadJoypad(0)!=0);
}
if(joy&BTN_SELECT){
StopSong();
while((ReadJoypad(0)&BTN_SELECT)!=0);
}
if(stopping==true && stopFrame==1){
action=ACTION_IDLE;
stopping=false;
dx=0;
}else if(lastWalkDir!= (joy & (BTN_LEFT+BTN_RIGHT)) && action==ACTION_WALK){
if((joy & (BTN_LEFT+BTN_RIGHT))!=0 ){
frame=17;
}else{
stopping=true;
stopFrame=0;
}
}
lastbuttons=joy;
lastWalkDir= joy & (BTN_LEFT+BTN_RIGHT);
return 0;
}