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added obstacles and boost mode

This commit is contained in:
Stefan Kinzel 2014-03-29 16:39:45 +01:00
parent 58f0239e1d
commit 3fb678d7e6
2 changed files with 100 additions and 36 deletions
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134
src/games/kart/kart.c
View File

@ -25,14 +25,15 @@
#if defined MENU_SUPPORT && defined GAME_KART
// icon (TODO: convert to hex)
static const uint8_t icon[8] PROGMEM =
{ 0b11100001,
0b11100001,
0b11000011,
0b10000111,
0b10000111,
0b11000011,
0b11000011,
0b10010111};
{ 0xE1, // 0b11100001,
0xE1, // 0b11100001,
0xC3, // 0b11000011,
0x87, // 0b10000111,
0x87, // 0b10000111,
0xC3, // 0b11000011,
0xC3, // 0b11000011,
0x97, // 0b10010111
};
game_descriptor_t kart_game_descriptor __attribute__((section(".game_descriptors"))) =
{
@ -41,68 +42,109 @@ game_descriptor_t kart_game_descriptor __attribute__((section(".game_descriptors
};
#endif
#define WAIT 20
#define WAIT 15
#define DRIVEDIV 5
#define MOVEDIV 1
#define DECREASE_WIDTH_DIV 600
#define DRIVE_DIV 10
#define DIRECTION_DIV 20
#define DECREASE_WIDTH_DIV 300
#define ACCELERATE_DIV 800
#define KEY_IGNORE 10
#define CURVE_PROP 50
#define OBSTACLE_PROP 30
// !! OBSTACLE_DIV in relation to drive steps
#define OBSTACLE_DIV 3
#define BOOST_CYCLES 150
#define BOOST_MULTIPLIER 5
#define KEY_IGNORE_INITIAL 15
#define KEY_IGNORE 7
#define CARCOLOR 3
#define BORDERCOLOR 2
#define LINECOLOR 1
#define OBSTACLE_COLOR 3
#define CURVE_PROP 50
uint8_t borders[NUM_ROWS][2];
uint8_t key_ignore[2];
// borders = (middle, width, obstacle_pos)
uint8_t borders[NUM_ROWS][3];
uint32_t extra_score = 0;
void kart_game(){
// Initialisation
uint32_t decrease_width_div = DECREASE_WIDTH_DIV;
uint8_t key_ignore[2];
uint8_t drive_div = DRIVE_DIV;
uint8_t carpos = NUM_COLS / 2;
uint32_t cycle = 0;
uint8_t draw_line = 1;
uint8_t draw_middle_line = 1;
uint8_t width = NUM_COLS - 2;
uint8_t middle = NUM_COLS / 2;
// obstacle_pos == 0 --> no obstacle
uint8_t obstacle_pos = 0;
char game_over[100] = "";
uint32_t boost_till = 0;
uint8_t boost_multiplier = 1;
key_ignore[0] = 0;
key_ignore[1] = 0;
clear_screen(0);
// init border memory
// init street memory
for(uint8_t row = 0; row < NUM_ROWS; row++){
borders[row][0] = middle;
borders[row][1] = NUM_COLS;
borders[row][2] = 0;
}
// init street border
line((pixel){0,0}, (pixel){0,NUM_ROWS}, BORDERCOLOR);
line((pixel){NUM_COLS-1,0}, (pixel){NUM_COLS-1,NUM_ROWS}, BORDERCOLOR);
setpixel((pixel){carpos, NUM_ROWS-1}, CARCOLOR);
// main loop
while(1){
// DECREASE WIDTH
if(cycle % DECREASE_WIDTH_DIV == 0){
if(cycle % decrease_width_div == 0){
width--;
decrease_width_div = decrease_width_div*2;
}
// INCREASE SPEED
if(cycle % ACCELERATE_DIV == 0 ){
drive_div--;
}
// MOVE
if (JOYISLEFT && key_ignore[0] <= 0){
if (JOYISLEFT && key_ignore[0] == 1){
setpixel((pixel){carpos, NUM_ROWS-1}, 0);
carpos++;
key_ignore[0] = KEY_IGNORE;
key_ignore[1] = 0;
}else if (JOYISRIGHT && key_ignore[1] <= 0){
}else if (JOYISRIGHT && key_ignore[1] == 1){
setpixel((pixel){carpos, NUM_ROWS-1}, 0);
carpos--;
key_ignore[1] = KEY_IGNORE;
key_ignore[0] = 0;
}else if (JOYISLEFT && key_ignore[0] <= 0){
setpixel((pixel){carpos, NUM_ROWS-1}, 0);
carpos++;
key_ignore[0] = KEY_IGNORE_INITIAL;
key_ignore[1] = 0;
}else if (JOYISRIGHT && key_ignore[1] <= 0){
setpixel((pixel){carpos, NUM_ROWS-1}, 0);
carpos--;
key_ignore[1] = KEY_IGNORE_INITIAL;
key_ignore[0] = 0;
}else if(JOYISUP && boost_till == 0){
boost_till = cycle + BOOST_CYCLES;
boost_multiplier = BOOST_MULTIPLIER;
}else if(!(JOYISRIGHT || JOYISLEFT)){
key_ignore[1] = 0;
key_ignore[0] = 0;
@ -112,6 +154,14 @@ void kart_game(){
break;
}
if(boost_till <= cycle && boost_multiplier > 1){
boost_till = cycle + BOOST_CYCLES;
boost_multiplier--;
}else if(boost_multiplier == 1){
boost_till = 0;
extra_score += BOOST_CYCLES * BOOST_MULTIPLIER;
}
// DIRECTION-STEP
if(cycle % DIRECTION_DIV == 0){
@ -125,12 +175,12 @@ void kart_game(){
}
// DRIVE-STEP
if(cycle % DRIVEDIV == 0){
if(cycle % (drive_div / boost_multiplier) == 0){
// shift pixmap down
drive();
// save border state
save_borders(middle, width);
save_street(middle, width, obstacle_pos);
// draw new first line
unsigned int px;
@ -139,16 +189,26 @@ void kart_game(){
setpixel((pixel){px, 0}, BORDERCOLOR);
}
}
}
// toggle drawing the middle line
if(cycle % (DRIVEDIV*4) == 0){
draw_line = 1-draw_line;
}
// toggle drawing the middle line
if(cycle % ((drive_div / boost_multiplier)*4) == 0){
draw_middle_line = 1-draw_middle_line;
}
// paint middle line
if(width > 6 && draw_line){
setpixel((pixel){middle, 0}, LINECOLOR);
// paint middle line
if(width > 6 && draw_middle_line){
setpixel((pixel){middle, 0}, LINECOLOR);
}
// set obstacle
obstacle_pos = 0;
if(cycle % OBSTACLE_DIV == 0 ){
int rnd = random8();
if(rnd < OBSTACLE_PROP){
obstacle_pos = (random8() % width) + (middle - width/2);
setpixel((pixel){obstacle_pos, 0}, OBSTACLE_COLOR);
}
}
}
// Paint car
@ -190,17 +250,20 @@ void drive(void){
}
/**
* Save the border state at the top line, so collision detection can
* Save the street state at the top line, so collision detection can
* work in the last line (where the car is).
*/
void save_borders(uint8_t middle, uint8_t width){
void save_street(uint8_t middle, uint8_t width, uint8_t obstacle_pos){
uint8_t row;
for(row = NUM_ROWS-1; row > 0 ; row--){
borders[row][0] = borders[row-1][0];
borders[row][1] = borders[row-1][1];
borders[row][2] = borders[row-1][2];
}
borders[0][0] = middle;
borders[0][1] = width;
borders[0][2] = obstacle_pos;
}
/**
@ -209,6 +272,7 @@ void save_borders(uint8_t middle, uint8_t width){
uint8_t check_collision(uint8_t carpos){
uint8_t middle = borders[NUM_ROWS-1][0];
uint8_t width = borders[NUM_ROWS-1][1];
uint8_t obstacle_pos = borders[NUM_ROWS-1][2];
return ( carpos<middle-(width/2) || carpos >= middle+(width/2) );
return ( carpos<middle-(width/2) || carpos >= middle+(width/2) || (obstacle_pos != 0 && carpos == obstacle_pos) );
}

2
src/games/kart/kart.h
View File

@ -11,7 +11,7 @@
void kart_game(void);
void drive(void);
void save_borders(uint8_t middle, uint8_t width);
void save_street(uint8_t middle, uint8_t width, uint8_t obstacle_pos);
uint8_t check_collision(uint8_t carpos);
#endif /* KART_H_ */