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main.c
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main.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include <inttypes.h>
#include "consoleLib.h"
#include "consoleMenu.h"
#include "gameField.h"
#include "helpMenu.h"
#define VERSION "1.0.1"
void resetGame(void);
void init(void);
void update(void);
void updateKey(int);
void updateMouse(void);
void updateSnake(void);
void createFood(void);
void drawField(void);
void drawSettings(void);
void drawStartMenu(void);
void setMap(int map);
void initVars(void);
int64_t calcCheckSum(int64_t highScore);
void readHighScore(void);
void saveHighScore(void);
//Set funcPtr to drawField after START_MENU
static void (*draw)(void);
static void (*drawOld)(void);
static int isHelp;
static int escCheck;
static const int gameMinWidth = 74;
static const int gameMinHeight = 23;
static enum {
START_MENU, SETTINGS, IN_GAME, GAME_OVER
}screen;
static int map;
static const int mapCount = 5;
static struct field maps[5];
static struct field gameField;
static double vSnake = 0; //Unit/s
static double timerSnake = 0;
static int timerInsect = 0;
static double moveAfterTime;
static int blockInput; //Wait for direction change before next key
static int notGameOverAdditionalReactionMove; //If the player will have one additonal move to prevent game over
//Start menu
static struct menuComponent startMenu;
static char *entriesStartMenu[] = {
"Play", "Settings"
};
//Settings
static struct menuComponent settingsNumVStart;
static struct menuComponent settingsNumVAddFactor;
static struct menuComponent settingsNumCountOfFood;
static struct tabOrder settingsTabOrder;
static int fCNS[] = {
CL_COLOR_WHITE, CL_COLOR_WHITE
};
static int fCS[] = {
CL_COLOR_CYAN, CL_COLOR_LIGHT_RED
};
static int bC[] = {
CL_COLOR_NO_COLOR, CL_COLOR_NO_COLOR
};
static double vStart = 2.;
static double vAddFactor = 1.;
static int countOfFood = 1;
static int64_t score;
static int64_t highScore;
static FILE *highScoreFile;
static unsigned int fruitCount;
void resetGame(void) {
reset();
freeTableOfContents(&content);
freeMenu(&startMenu);
freeNumField(&settingsNumVStart);
freeNumField(&settingsNumVAddFactor);
freeNumField(&settingsNumCountOfFood);
freeTabOrder(&settingsTabOrder);
removeField(&gameField);
for(int i = 0;i < mapCount;i++)
removeField(maps + i);
if(highScoreFile != NULL)
fclose(highScoreFile);
}
int main(void) {
init();
while(1) {
update();
sleepMS(40);
}
return EXIT_SUCCESS;
}
void init(void) {
initConsole();
srand((unsigned)time(NULL));
int widthCon, heightCon;
getConsoleSize(&widthCon, &heightCon);
if(widthCon < gameMinWidth || heightCon < gameMinHeight) {
reset();
printf("Console is to small (Min: %d x %d)!\n", gameMinWidth, gameMinHeight);
exit(EXIT_FAILURE);
}
//High score
readHighScore();
//Add reset after console size check
atexit(resetGame);
//Menus
initNumField(&settingsNumVStart, 0, 1, 15, (int)vStart, 1, 10, CL_COLOR_CYAN,
CL_COLOR_NO_COLOR);
initNumField(&settingsNumVAddFactor, 0, 3, 15, (int)vAddFactor*10, 5, 20,
CL_COLOR_WHITE, CL_COLOR_NO_COLOR);
settingsNumVAddFactor.isSelected = 0;
initNumField(&settingsNumCountOfFood, 0, 5, 15, (int)countOfFood, 1, 10,
CL_COLOR_WHITE, CL_COLOR_NO_COLOR);
settingsNumCountOfFood.isSelected = 0;
initTabOrder(&settingsTabOrder, 2, fCNS, bC, fCS, bC);
addToTabOrder(&settingsTabOrder, &settingsNumVStart);
addToTabOrder(&settingsTabOrder, &settingsNumVAddFactor);
addToTabOrder(&settingsTabOrder, &settingsNumCountOfFood);
initMenu(&startMenu, entriesStartMenu, 2, 0, 15, gameMinWidth, 2, CM_TA_CENTER,
CM_SC_ARROW_LEFT_RIGHT, CL_COLOR_WHITE, CL_COLOR_NO_COLOR, CL_COLOR_CYAN,
CL_COLOR_NO_COLOR);
//Help menu
initHelpMenu(gameMinWidth, gameMinHeight - 4);
//Fields
initField(&gameField, gameMinWidth, gameMinHeight - 1);
for(int i = 0; i < mapCount;i++)
initField(maps + i, gameMinWidth, gameMinHeight - 1);
//Wall
for(int i = 1;i < 5;i++) {
for(int j = 0;j < maps[i].width;j++)
maps[i].field[j][0] = maps[i].field[j][maps[i].height - 1] = WALL;
if(i != 3)
for(int j = 1;j < maps[i].height - 1;j++)
maps[i].field[0][j] = maps[i].field[maps[i].width - 1][j] = WALL;
}
for(int i = 20;i < 51;i++)
maps[2].field[i][8] = maps[2].field[i][12] = WALL;
for(int i = 8;i < 15;i++)
maps[3].field[20][i] = maps[3].field[50][i] = maps[4].field[20][i] = maps[4].field[50][i] = WALL;
for(int i = 20;i < 51;i++)
maps[4].field[i][7] = WALL;
//Remove Walls
for(int i = 9;i < 11;i++)
maps[4].field[0][i] = maps[4].field[maps[4].width - 1][i] = EMPTY;
//Snake
for(int i = 0;i < mapCount;i++) {
maps[i].snakeSize = 3;
maps[i].snakeDirection = RIGHT;
for(int j = 0;j < 3;j++) {
maps[i].field[32 - j][10] = SNAKE;
maps[i].snakePos[j][0] = 32 - j;
maps[i].snakePos[j][1] = 10;
}
}
initVars();
}
void update(void) {
//Input
if(hasInput()) { //If has key input: call updateKey
updateKey(getKey());
}
updateMouse();
//Snake
updateSnake();
//Graphics
clrscr();
draw();
}
void updateKey(int key) {
int tmp;
//Help
if(isHelp && key == CL_KEY_ESC) {
isHelp = 0;
draw = drawOld;
return;
}
//Block other inputs if [y]es/[n]o
if(escCheck) {
if(tolower(key) == 'y') {
if(screen == START_MENU) {
//Exit game
exit(EXIT_SUCCESS);
}else {
if(score > highScore) {
highScore = score;
saveHighScore();
}
//Reset game (to start menu)
initVars();
}
}else if(tolower(key) == 'n') {
escCheck = 0;
}
}else {
//Help
if(key == CL_KEY_F1) {
isHelp = !isHelp;
if(isHelp) {
drawOld = draw;
draw = drawHelp;
}else {
draw = drawOld;
}
return;
}
if(isHelp) {
if(key == CL_KEY_UP) {
helpPage--;
if(helpPage < 0) {
helpPage = maxHelpPage;
}
}else if(key == CL_KEY_DOWN) {
helpPage++;
if(helpPage > maxHelpPage) {
helpPage = 0;
}
}
return;
}
switch(screen) {
case START_MENU:
switch(updateKeyMenu(&startMenu, key)) {
case 0:
initVars();
screen = IN_GAME;
//Set new draw function
draw = drawField;
break;
case 1:
screen = SETTINGS;
draw = drawSettings;
break;
}
break;
case SETTINGS:
if(updateKeyNumField(&settingsNumVStart, key, &tmp)) {
vStart = (double)tmp;
}
if(updateKeyNumField(&settingsNumVAddFactor, key, &tmp)) {
vAddFactor = (double)tmp/10.;
}
updateKeyNumField(&settingsNumCountOfFood, key, &countOfFood);
updateKeyTabOrder(&settingsTabOrder, key);
break;
case IN_GAME:
if(!blockInput) {
switch(key) {
case CL_KEY_LEFT:
if(gameField.snakeDirection%2) {
gameField.snakeDirection = LEFT;
blockInput = 1;
}
break;
case CL_KEY_UP:
if(!(gameField.snakeDirection%2)) {
gameField.snakeDirection = UP;
blockInput = 1;
}
break;
case CL_KEY_RIGHT:
if(gameField.snakeDirection%2) {
gameField.snakeDirection = RIGHT;
blockInput = 1;
}
break;
case CL_KEY_DOWN:
if(!(gameField.snakeDirection%2)) {
gameField.snakeDirection = DOWN;
blockInput = 1;
}
break;
}
}
break;
case GAME_OVER:
break;
}
//Exit game
if(key == CL_KEY_ESC) {
if(screen == SETTINGS) {
screen = START_MENU;
draw = drawStartMenu;
return;
}
escCheck = 1;
}
}
}
void updateMouse(void) {
int column, row;
getMousePosClicked(&column, &row);
if(column == -1) //No input
return;
//Help
if(isHelp) {
//"row - 2": Content start at row 2
int tmpPage = getPageMouseClicked(&content, helpPage, row - 2);
if(tmpPage != -1)
helpPage = tmpPage;
if(row == 22 && column < 8)
updateKey(CL_KEY_DOWN);
return;
}
if(escCheck) {
if(row == 13) {
if(screen == START_MENU) {
if(column > 28 && column < 34)
updateKey('y');
else if(column > 40 && column < 45)
updateKey('n');
}else {
if(column > 26 && column < 32)
updateKey('y');
else if(column > 41 && column < 46)
updateKey('n');
}
}
}else {
switch(screen) {
case START_MENU:
switch(updateMouseMenu(&startMenu, column, row)) {
case 0:
initVars();
screen = IN_GAME;
//Set new draw function
draw = drawField;
break;
case 1:
screen = SETTINGS;
draw = drawSettings;
break;
}
if(row == 21 && column > 64 && column < 73)
updateKey(CL_KEY_F1);
break;
case SETTINGS:
updateMouseNumField(&settingsNumVStart, column, row);
updateMouseNumField(&settingsNumVAddFactor, column, row);
updateMouseNumField(&settingsNumCountOfFood, column, row);
break;
case IN_GAME:
case GAME_OVER:
break;
}
}
}
void updateSnake(void) {
enum fieldIDs tmpField = EMPTY;
int oldPosX = 0, oldPosY = 0, tmp;
int drawHeadAgain = 0;
enum direction moveInsect;
if(screen != IN_GAME || escCheck || draw != drawField)
return;
if(gameField.insectPos[0] != -1) {
timerInsect++;
if(timerInsect == 12) {
timerInsect = 0;
int alreadyCheck = 0;
do {
oldPosX = gameField.insectPos[0];
oldPosY = gameField.insectPos[1];
//Everything was checked but no EMPTY field -> no movement
if(alreadyCheck == 15)
break;
moveInsect = rand()%4;
switch(moveInsect) {
case LEFT:
oldPosX--;
if(oldPosX < 0)
oldPosX = gameField.width - 1;
alreadyCheck |= 1;
break;
case UP:
oldPosY--;
if(oldPosY < 0)
oldPosY = gameField.height - 1;
alreadyCheck |= 2;
break;
case RIGHT:
oldPosX++;
if(oldPosX >= gameField.width)
oldPosX = 0;
alreadyCheck |= 4;
break;
case DOWN:
oldPosY++;
if(oldPosY >= gameField.height)
oldPosY = 0;
alreadyCheck |= 8;
break;
}
}while(gameField.field[oldPosX][oldPosY] != EMPTY);
gameField.field[gameField.insectPos[0]][gameField.insectPos[1]] = EMPTY;
gameField.field[oldPosX][oldPosY] = INSECT;
gameField.insectPos[0] = oldPosX;
gameField.insectPos[1] = oldPosY;
}
}
timerSnake -= 40.;
if(timerSnake < 0) {
timerSnake += moveAfterTime;
blockInput = 0;
switch(gameField.snakeDirection) {
case LEFT:
oldPosX = gameField.snakePos[0][0];
oldPosY = gameField.snakePos[0][1];
gameField.field[oldPosX][oldPosY] = EMPTY;
tmp = oldPosX - 1;
if(tmp < 0)
tmp = gameField.width - 1;
tmpField = gameField.field[tmp][oldPosY];
gameField.snakePos[0][0] = tmp;
gameField.field[tmp][oldPosY] = SNAKE;
break;
case UP:
oldPosX = gameField.snakePos[0][0];
oldPosY = gameField.snakePos[0][1];
gameField.field[oldPosX][oldPosY] = EMPTY;
tmp = oldPosY - 1;
if(tmp < 0)
tmp = gameField.height - 1;
tmpField = gameField.field[oldPosX][tmp];
gameField.snakePos[0][1] = tmp;
gameField.field[oldPosX][tmp] = SNAKE;
break;
case RIGHT:
oldPosX = gameField.snakePos[0][0];
oldPosY = gameField.snakePos[0][1];
gameField.field[oldPosX][oldPosY] = EMPTY;
tmp = oldPosX + 1;
if(tmp >= gameField.width)
tmp = 0;
tmpField = gameField.field[tmp][oldPosY];
gameField.snakePos[0][0] = tmp;
gameField.field[tmp][oldPosY] = SNAKE;
break;
case DOWN:
oldPosX = gameField.snakePos[0][0];
oldPosY = gameField.snakePos[0][1];
gameField.field[oldPosX][oldPosY] = EMPTY;
tmp = oldPosY + 1;
if(tmp >= gameField.height)
tmp = 0;
tmpField = gameField.field[oldPosX][tmp];
gameField.snakePos[0][1] = tmp;
gameField.field[oldPosX][tmp] = SNAKE;
break;
}
switch(tmpField) {
case SNAKE:
//Break if snake "eats" snake tail
if(gameField.snakePos[0][0] == gameField.
snakePos[gameField.snakeSize - 1][0] && gameField.snakePos[0][1] ==
gameField.snakePos[gameField.snakeSize - 1][1]) {
drawHeadAgain = 1;
break;
}
/* no break */
case WALL:
if(notGameOverAdditionalReactionMove) {
screen = GAME_OVER;
if(score > highScore) {
highScore = score;
saveHighScore();
}
escCheck = 1;
}else {
if(moveAfterTime < 30)
moveAfterTime = 30;
timerSnake = moveAfterTime;
}
notGameOverAdditionalReactionMove = 1;
//No movement -> Reset snake head
gameField.field[gameField.snakePos[0][0]]
[gameField.snakePos[0][1]] = tmpField;
gameField.field[oldPosX][oldPosY] = SNAKE;
gameField.snakePos[0][0] = oldPosX;
gameField.snakePos[0][1] = oldPosY;
return;
case EMPTY:
case APPLE:
case BLUEBERRY:
case INSECT:
break;
}
notGameOverAdditionalReactionMove = 0;
//Move snake
for(int i = 1;i < gameField.snakeSize;i++) {
//Move snake in snakePos
tmp = gameField.snakePos[i][0];
gameField.snakePos[i][0] = oldPosX;
oldPosX = tmp;
tmp = gameField.snakePos[i][1];
gameField.snakePos[i][1] = oldPosY;
oldPosY = tmp;
//Move snake in field
gameField.field[oldPosX][oldPosY] = EMPTY;
gameField.field[gameField.snakePos[i][0]]
[gameField.snakePos[i][1]] = SNAKE;
}
if(drawHeadAgain)
gameField.field[gameField.snakePos[0][0]][gameField.snakePos[0][1]] = SNAKE;
switch(tmpField) {
case INSECT:
score += 30; //Will be += 50
timerInsect = 0;
gameField.insectPos[0] = -1;
gameField.insectPos[1] = -1;
/* no break */
case BLUEBERRY:
score += 10; //Wil be += 20
/* no break */
case APPLE:
//oldPosX, oldPosY: Pos for new body of snake
gameField.field[oldPosX][oldPosY] = SNAKE;
gameField.snakePos[gameField.snakeSize][0] = oldPosX;
gameField.snakePos[gameField.snakeSize][1] = oldPosY;
gameField.snakeSize++;
createFood();
score += 10;
if(score > (int64_t)9999999999)
score = (int64_t)9999999999;
if(fruitCount > (unsigned int)(10 * (map/mapCount + 1))) {
fruitCount -= (unsigned int)(10 * (map/mapCount + 1));
map++;
if(map > 399)
map = 399;
setMap(map%mapCount);
break;
}
fruitCount++;
vSnake += .6/(vSnake + .1) * ((double)map/50. + 1.) * vAddFactor;
moveAfterTime = 1000./vSnake;
if(moveAfterTime < 30)
moveAfterTime = 30;
timerSnake = moveAfterTime;
break;
case EMPTY:
case WALL:
case SNAKE:
break;
}
}
}
void createFood(void) {
int food = rand()%100;
int posX, posY;
do {
posX = rand()%gameMinWidth;
posY = rand()%gameMinHeight;
}while(gameField.field[posX][posY] != EMPTY);
if(food < 60) {
//Apple
gameField.field[posX][posY] = APPLE;
}else if(food < 90 || gameField.insectPos[0] != -1) {
//Blueberry
gameField.field[posX][posY] = BLUEBERRY;
}else {
//Insect
gameField.field[posX][posY] = INSECT;
gameField.insectPos[0] = posX;
gameField.insectPos[1] = posY;
}
}
void drawField(void) {
setColor(CL_COLOR_WHITE, CL_COLOR_NO_COLOR);
drawf("Score: %05d%05d\n", (int)(score/100000L), (int)(score%100000L));
setCursorPos(gameMinWidth - 22, 0);
drawf("High score: %05d%05d\n", (int)(highScore/100000L),
(int)(highScore%100000L));
setCursorPos(gameMinWidth/2 - 8, 0);
drawf("Level: %03d\n", map + 1);
for(int i = 0;i < gameField.height;i++) {
for(int j = 0;j < gameField.width;j++) {
drawf("%c", getCharFromField(&gameField, j, i));
}
drawf("\n");
}
//Exit
if(escCheck) {
setColor(CL_COLOR_BLACK, CL_COLOR_YELLOW);
setCursorPos(27, 10);
if(screen == GAME_OVER)
drawf(" Game over! ");
else
drawf("Back to start menu?");
setCursorPos(27, 11);
if(screen == GAME_OVER)
drawf("Back to start menu?");
else
drawf("-------------------");
setCursorPos(27, 12);
if(screen == GAME_OVER)
drawf("-------------------");
else
drawf(" ");
setCursorPos(27, 13);
drawf("[y]es [n]o");
//Draw border
setColor(CL_COLOR_LIGHT_BLACK, CL_COLOR_RED);
setCursorPos(26, 9);
drawf(" ");
setCursorPos(26, 14);
drawf(" ");
for(int i = 10;i < 14;i++) {
setCursorPos(26, i);
drawf(" ");
setCursorPos(46, i);
drawf(" ");
}
}
}
void drawSettings(void) {
resetColor();
drawf("Start speed of snake:");
drawNumField(&settingsNumVStart);
resetColor();
setCursorPos(0, 2);
drawf("Speed increase factor:");
drawNumField(&settingsNumVAddFactor);
resetColor();
setCursorPos(0, 4);
drawf("Count of food at once:");
drawNumField(&settingsNumCountOfFood);
}
void drawStartMenu(void) {
//Draw border (top)
setColor(CL_COLOR_WHITE, CL_COLOR_BLUE);
drawf("/--------------------------------------------------------------------"
"----\\\n");
//Draw text
setColor(CL_COLOR_LIGHT_YELLOW, CL_COLOR_NO_COLOR);
setCursorPos(19, 1);
drawf("-------------------------------------");
setCursorPos(19, 2);
drawf(".---- . . .---. | ./ .----\n");
setCursorPos(19, 3);
drawf("| |\\ | | | | /' |\n");
setCursorPos(19, 4);
drawf("'---. | \\ | +---+ :{ +----\n");
setCursorPos(23, 5);
drawf("| | \\| | | | \\. |\n");
setCursorPos(19, 6);
drawf("----' ' ' | | | '\\ '----\n");
setCursorPos(19, 7);
drawf("-------------------------------------");
setCursorPos(1, 13);
drawf("-----------------------------------------------------------------------"
"-");
//Draw infos
resetColor();
char verStr[70]; //69 chars + '\0'
sprintf(verStr, "Version: " VERSION);
setCursorPos(71 - (int)strlen(verStr), 14); //69 chars, (3 chars empty)
drawf("%s", verStr);
drawMenu(&startMenu);
resetColor();
setCursorPos(1, 21);
drawf("By ");
setColor(CL_COLOR_NO_COLOR, CL_COLOR_YELLOW);
drawf("JDDev0");
resetColor();
setCursorPos(65, 21);
drawf("Help: ");
setColor(CL_COLOR_LIGHT_RED, CL_COLOR_NO_COLOR);
drawf("F1");
//Draw border
setColor(CL_COLOR_WHITE, CL_COLOR_BLUE);
for(int i = 1;i < 22;i++) {
setCursorPos(0, i);
drawf("|");
setCursorPos(73, i);
drawf("|");
}
drawf("\n\\-----------------------------------------------------------------"
"-------/");
//Exit
if(escCheck) {
setColor(CL_COLOR_BLACK, CL_COLOR_YELLOW);
setCursorPos(29, 10);
drawf(" Exit game? ");
setCursorPos(29, 11);
drawf(" ---------- ");
setCursorPos(29, 12);
drawf(" ");
setCursorPos(29, 13);
drawf("[y]es [n]o");
//Draw border
setColor(CL_COLOR_LIGHT_BLACK, CL_COLOR_RED);
setCursorPos(28, 9);
drawf(" ");
setCursorPos(28, 14);
drawf(" ");
for(int i = 10;i < 14;i++) {
setCursorPos(28, i);
drawf(" ");
setCursorPos(45, i);
drawf(" ");
}
}
}
void setMap(int map) {
gameField.insectPos[0] = -1;
gameField.insectPos[1] = -1;
timerInsect = 0;
vSnake = vStart;
timerSnake = moveAfterTime = 1000./vSnake;
blockInput = 0;
for(int i = 0;i < gameField.width;i++)
for(int j = 0;j < gameField.height;j++)
gameField.field[i][j] = maps[map].field[i][j];
gameField.snakeSize = maps[map].snakeSize;
gameField.snakeDirection = maps[map].snakeDirection;
for(int i = 0;i < maps[map].snakeSize;i++) {
gameField.snakePos[i][0] = maps[map].snakePos[i][0];
gameField.snakePos[i][1] = maps[map].snakePos[i][1];
}
for(int i = 0;i < countOfFood;i++)
createFood();
}
void initVars(void) {
//Fields
map = 0;
notGameOverAdditionalReactionMove = 0;
setMap(map);
//Help
isHelp = 0;
//Function pointer
drawOld = draw = drawStartMenu;
screen = START_MENU;
fruitCount = score = 0;
escCheck = 0;
}
int64_t calcCheckSum(int64_t highScore) {
int64_t tmp = 42;
while(highScore > 17) {
highScore /= 5;
tmp += highScore * 2;
highScore -= 3;
}
tmp -= highScore/3;
return tmp % 0x1000000;
}
void readHighScore(void) {
int64_t checkSum;
int64_t highScoreAdd;
int checkSumTmp[3];
int highScoreTmp[2];
highScoreFile = fopen("score.data", "r+");
if(highScoreFile == NULL) {
reset();
printf("Can't read score file!\n");
exit(EXIT_FAILURE);
}
fscanf(highScoreFile, "%02x%05d%02x%05d%02x", checkSumTmp, highScoreTmp + 1,
checkSumTmp + 2, highScoreTmp, checkSumTmp + 1);
checkSum = ((int64_t)checkSumTmp[2] << 16) + ((int64_t)checkSumTmp[1] << 8) +
(int64_t)checkSumTmp[0];
highScoreAdd = (int64_t)highScoreTmp[1] * 100000L + (int64_t)highScoreTmp[0];
if(calcCheckSum(highScoreAdd) != checkSum)
highScore = 0;
else
highScore = highScoreAdd;
}
void saveHighScore(void) {
int64_t checkSum = calcCheckSum(highScore);
int checkSumTmp[3];
int highScoreTmp[2];
checkSumTmp[0] = checkSum & 0xFF;
checkSumTmp[1] = (checkSum >> 8) & 0xFF;
checkSumTmp[2] = (checkSum >> 16) & 0xFF;
highScoreTmp[0] = (int)(highScore%100000L);
highScoreTmp[1] = (int)(highScore/100000L);
if(highScoreFile != NULL) {
//Go to start of file
rewind(highScoreFile);
fprintf(highScoreFile, "%02x%05d%02x%05d%02x", checkSumTmp[0],
highScoreTmp[1], checkSumTmp[2], highScoreTmp[0], checkSumTmp[1]);
fflush(highScoreFile);
}else {
printf("Can't write score file!\n");
}
}