initial kart commit
This commit is contained in:
Stefan Kinzel
parent
266b599cfd
commit
83f4b908a0
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@ -9,4 +9,5 @@ comment "Games"
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dep_bool "Space Invaders" GAME_SPACE_INVADERS $JOYSTICK_SUPPORT $RANDOM_SUPPORT
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dep_bool "Snake" GAME_SNAKE $JOYSTICK_SUPPORT $RANDOM_SUPPORT
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dep_bool "Breakout" GAME_BREAKOUT $JOYSTICK_SUPPORT $RANDOM_SUPPORT
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dep_bool "Kart" GAME_KART $JOYSTICK_SUPPORT $RANDOM_SUPPORT
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endmenu
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@ -20,3 +20,7 @@ endif
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ifeq ($(GAME_BREAKOUT),y)
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SUBDIRS += games/breakout
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endif
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ifeq ($(GAME_KART),y)
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SUBDIRS += games/kart
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endif
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@ -0,0 +1,8 @@
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TARGET =
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TOPDIR = ../..
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include $(TOPDIR)/defaults.mk
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SRC = kart.c
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include $(TOPDIR)/rules.mk
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@ -0,0 +1,197 @@
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/*
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* kart.c
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*
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* Created on: 07.02.2014
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* Author: Stefan Kinzel
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*/
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#include <assert.h>
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#include <stdint.h>
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#include "../../config.h"
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#include "../../compat/pgmspace.h"
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#include "../../pixel.h"
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#include "../../random/prng.h"
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#include "../../util.h"
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#include "../../joystick/joystick.h"
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#include "../../menu/menu.h"
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#include "../../scrolltext/scrolltext.h"
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#include "kart.h"
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#include <stdio.h>
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#if defined MENU_SUPPORT && defined GAME_KART
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// icon (TODO: convert to hex)
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static const uint8_t icon[8] PROGMEM =
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{ 0b11100001,
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0b11100001,
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0b11000011,
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0b10000111,
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0b10000111,
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0b11000011,
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0b11000011,
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0b10010111};
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game_descriptor_t kart_game_descriptor __attribute__((section(".game_descriptors"))) =
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{
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&kart_game,
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icon,
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};
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#endif
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#define WAIT 75
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#define DRIVEDIV 3
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#define MOVEDIV 1
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#define DECREASE_WIDTH_DIV 120
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#define CARCOLOR 3
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#define BORDERCOLOR 2
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#define LINECOLOR 1
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#define CURVE_PROP 30
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uint8_t borders[NUM_ROWS][2];
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void kart_game(){
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// Initialisation
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uint8_t carpos = NUM_COLS / 2;
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uint32_t cycle = 0;
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uint8_t draw_line = 1;
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uint8_t width = NUM_COLS -2;
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uint8_t middle = NUM_COLS / 2;
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char game_over[100] = "";
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clear_screen(0);
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// init border memory
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for(uint8_t row = 0; row < NUM_ROWS; row++){
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borders[row][0] = middle;
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borders[row][1] = width;
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}
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setpixel((pixel){carpos, NUM_ROWS-1}, CARCOLOR);
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// Wait some seconds to start...
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while(1){
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cycle++;
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wait(WAIT);
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if(cycle >= DRIVEDIV*0){
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break;
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}
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}
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// main loop
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while(1){
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// DECREASE WIDTH
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if(cycle % DECREASE_WIDTH_DIV == 0){
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width--;
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}
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// MOVE-STEP
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if(cycle % MOVEDIV == 0){
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if (JOYISLEFT){
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carpos++;
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setpixel((pixel){carpos, NUM_ROWS-1}, 0);
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}else if (JOYISRIGHT){
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carpos--;
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setpixel((pixel){carpos, NUM_ROWS-1}, 0);
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}
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if(check_collision(carpos)){
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break;
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}
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}
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// DRIVE-STEP
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if(cycle % DRIVEDIV == 0){
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// generate a route
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int rnd = random8();
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if(rnd < CURVE_PROP && middle-(width/2) > 1){
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middle--;
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}else if(rnd > 256-CURVE_PROP && middle+(width/2) < NUM_COLS-1){
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middle++;
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}
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// shift pixmap down
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drive();
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// save border state
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save_borders(middle, width);
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// draw new first line
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unsigned int px;
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for(px=0; px < NUM_COLS; px++){
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if(px<middle-(width/2) || px >= middle+(width/2)){
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setpixel((pixel){px, 0}, BORDERCOLOR);
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}
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}
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}
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// toggle drawing the middle line
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if(cycle % (DRIVEDIV*4) == 0){
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draw_line = 1-draw_line;
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}
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// paint middle line
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if(width > 4 && draw_line){
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setpixel((pixel){middle, 0}, LINECOLOR);
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}
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// Paint car
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setpixel((pixel){carpos, NUM_ROWS-1}, CARCOLOR);
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cycle++;
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wait(WAIT);
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}
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snprintf(game_over, sizeof(game_over), "</#Game Over, Score: %i", cycle);
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scrolltext(game_over);
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}
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/**
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* Shifts the Pixmap one px down
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*/
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void drive(void){
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unsigned char plane, row;
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for(plane=0; plane<NUMPLANE; plane++){
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for(row=NUM_ROWS-1;row>0; row--){
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pixmap[plane][row][0] = pixmap[plane][row-1][0];
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pixmap[plane][row][1] = pixmap[plane][row-1][1];
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}
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pixmap[plane][0][0] = 0x00;
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pixmap[plane][0][1] = 0x00;
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}
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}
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/**
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* Save the border state at the top line, so collision detection can
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* work in the last line (where the car is).
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*/
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void save_borders(uint8_t middle, uint8_t width){
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uint8_t row;
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for(row = NUM_ROWS-1; row > 0 ; row--){
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borders[row][0] = borders[row-1][0];
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borders[row][1] = borders[row-1][1];
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}
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borders[0][0] = middle;
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borders[0][1] = width;
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}
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/**
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* check if collision occours
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*/
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uint8_t check_collision(uint8_t carpos){
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uint8_t middle = borders[NUM_ROWS-1][0];
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uint8_t width = borders[NUM_ROWS-1][1];
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return ( carpos<middle-(width/2) || carpos >= middle+(width/2) );
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}
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@ -0,0 +1,17 @@
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/*
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* kart.h
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*
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* Created on: 07.02.2014
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* Author: Stefan Kinzel
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*/
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#ifndef KART_H_
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#define KART_H_
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void kart_game(void);
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void drive(void);
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void save_borders(uint8_t middle, uint8_t width);
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uint8_t check_collision(uint8_t carpos);
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#endif /* KART_H_ */
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