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Add an option to render the game at twice the size

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Kevin MacMartin 2020-10-23 17:20:32 -04:00
parent 78163cec45
commit 1f4ad02aaf
2 changed files with 57 additions and 50 deletions
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1
README.md
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@ -47,6 +47,7 @@ Usage: `./isnake [options]`
* `./isnake -b [blocks]`: Set the number of blocks: between [0] and [40] (DEFAULT: [20]) * `./isnake -b [blocks]`: Set the number of blocks: between [0] and [40] (DEFAULT: [20])
* `./isnake -l [length]`: Set the snake's starting length: between [3] and [35] (DEFAULT: [3]) * `./isnake -l [length]`: Set the snake's starting length: between [3] and [35] (DEFAULT: [3])
* `./isnake -s [speed]`: Set the snake's starting speed: between [1] and [9] (DEFAULT: [1]) * `./isnake -s [speed]`: Set the snake's starting speed: between [1] and [9] (DEFAULT: [1])
* `./isnake -2`: Double the size the game renders at
* `./isnake -h`: Display help information * `./isnake -h`: Display help information
## Controls ## ## Controls ##

106
isnake.c
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@ -91,29 +91,29 @@ const int colourTextData[3] = { 135, 215, 255 }; // Blue
// ENUMERATIONS FOR MORE READABLE CODE // ENUMERATIONS FOR MORE READABLE CODE
enum direction { Up, Down, Left, Right }; // Movement directions enum direction { Up, Down, Left, Right }; // Movement directions
enum gameParams { QuitGame, TilesHigh, TilesWide, NPCCount, SnakeSpeed, SnakeLength, SnakeDirection, SnakeScore }; enum gameParams { QuitGame, TilesHigh, TilesWide, NPCCount, SnakeSpeed, SnakeLength, SnakeDirection, SnakeScore, RenderSizeMultiplier };
// GAME FUNCTIONS // GAME FUNCTIONS
void gameLoop(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8], SDL_Event* event); void gameLoop(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9], SDL_Event* event);
void moveSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8], enum direction newDirection); void moveSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9], enum direction newDirection);
bool collisionDetect(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8], enum direction newDirection); bool collisionDetect(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9], enum direction newDirection);
void collisionDetectFood(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8]); void collisionDetectFood(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9]);
bool gameEventPoll(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8], SDL_Event* event); bool gameEventPoll(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9], SDL_Event* event);
bool scrollSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8]); bool scrollSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9]);
void updateSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8]); void updateSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9]);
void loadNPCs(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8]); void loadNPCs(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9]);
void randomLocation(int** ppSprites, int (*gameParameters)[8], int* location[2]); void randomLocation(int** ppSprites, int (*gameParameters)[9], int* location[2]);
void drawText(SDL_Surface* screen, char* string, int size, int x, int y, SDL_Colour colour); void drawText(SDL_Surface* screen, char* string, int size, int x, int y, SDL_Colour colour);
void updateRect(SDL_Surface* screen, SDL_Rect** ppTiles, int position[2], const int colour[3]); void updateRect(SDL_Surface* screen, SDL_Rect** ppTiles, int position[2], const int colour[3]);
// COMMANDLINE FUNCTIONS // COMMANDLINE FUNCTIONS
void configureGame(int argc, char** args, int (*gameParameters)[8]); void configureGame(int argc, char** args, int (*gameParameters)[9]);
void printHelpMenu(char filename[]); void printHelpMenu(char filename[]);
void printErrorHelp(char filename[]); void printErrorHelp(char filename[]);
// MAIN LOOP // MAIN LOOP
int main(int argc, char* args[]) { int main(int argc, char* args[]) {
int x, y, gameParameters[8]; int x, y, gameParameters[9];
int** ppSprites = NULL; int** ppSprites = NULL;
int* pSprites = NULL; int* pSprites = NULL;
SDL_Surface* screen = NULL; SDL_Surface* screen = NULL;
@ -144,7 +144,7 @@ int main(int argc, char* args[]) {
atexit(TTF_Quit); atexit(TTF_Quit);
// INITIALIZE THE MAIN SURFACE // INITIALIZE THE MAIN SURFACE
if ((screen = SDL_SetVideoMode((TILEWIDTH * gameParameters[TilesWide]), (TILEHEIGHT * gameParameters[TilesHigh]) + 35, 32, SDL_HWSURFACE | SDL_DOUBLEBUF | SDL_ANYFORMAT)) == NULL) { if ((screen = SDL_SetVideoMode((TILEWIDTH * gameParameters[TilesWide] * gameParameters[RenderSizeMultiplier]), ((TILEHEIGHT * gameParameters[TilesHigh]) + 35) * gameParameters[RenderSizeMultiplier], 32, SDL_HWSURFACE | SDL_DOUBLEBUF | SDL_ANYFORMAT)) == NULL) {
fprintf(stderr, "\nUnable to initialize SDL: %s\n", SDL_GetError()); fprintf(stderr, "\nUnable to initialize SDL: %s\n", SDL_GetError());
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
@ -169,10 +169,10 @@ int main(int argc, char* args[]) {
for (x = 0; x < gameParameters[TilesHigh]; x++) { for (x = 0; x < gameParameters[TilesHigh]; x++) {
for (y = 0; y < gameParameters[TilesWide]; y++) { for (y = 0; y < gameParameters[TilesWide]; y++) {
ppTiles[x][y].w = TILEWIDTH - (TILEWIDTH / 10); ppTiles[x][y].w = TILEWIDTH * gameParameters[RenderSizeMultiplier] - (TILEWIDTH * gameParameters[RenderSizeMultiplier] / 10);
ppTiles[x][y].h = TILEHEIGHT - (TILEHEIGHT / 10); ppTiles[x][y].h = TILEHEIGHT * gameParameters[RenderSizeMultiplier] - (TILEHEIGHT * gameParameters[RenderSizeMultiplier] / 10);
ppTiles[x][y].x = ((ppTiles[x][y].w + (TILEWIDTH / 10)) * y); ppTiles[x][y].x = ((ppTiles[x][y].w + (TILEWIDTH * gameParameters[RenderSizeMultiplier] / 10)) * y);
ppTiles[x][y].y = ((ppTiles[x][y].h + (TILEHEIGHT / 10)) * x); ppTiles[x][y].y = ((ppTiles[x][y].h + (TILEHEIGHT * gameParameters[RenderSizeMultiplier] / 10)) * x);
SDL_FillRect(screen, &ppTiles[x][y], SDL_MapRGB(screen->format, colourTiles[0], colourTiles[1], colourTiles[2])); SDL_FillRect(screen, &ppTiles[x][y], SDL_MapRGB(screen->format, colourTiles[0], colourTiles[1], colourTiles[2]));
} }
} }
@ -221,16 +221,16 @@ int main(int argc, char* args[]) {
} }
// GAME LOOP // GAME LOOP
void gameLoop(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8], SDL_Event* event) { void gameLoop(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9], SDL_Event* event) {
SDL_Colour SDL_ColourBackground = { colourBackground[0], colourBackground[1], colourBackground[2] }; SDL_Colour SDL_ColourBackground = { colourBackground[0], colourBackground[1], colourBackground[2] };
SDL_Colour SDL_ColourTextLabel = { colourTextLabel[0], colourTextLabel[1], colourTextLabel[2] }; SDL_Colour SDL_ColourTextLabel = { colourTextLabel[0], colourTextLabel[1], colourTextLabel[2] };
SDL_Colour SDL_ColourTextData = { colourTextData[0], colourTextData[1], colourTextData[2] }; SDL_Colour SDL_ColourTextData = { colourTextData[0], colourTextData[1], colourTextData[2] };
SDL_Colour SDL_ColourTextGameOver = { colourTextGameOver[0], colourTextGameOver[1], colourTextGameOver[2] }; SDL_Colour SDL_ColourTextGameOver = { colourTextGameOver[0], colourTextGameOver[1], colourTextGameOver[2] };
int scoreLabelPosition[2] = { 15, (TILEHEIGHT * (*gameParameters)[TilesHigh]) + 4 }; int scoreLabelPosition[2] = { 15 * (*gameParameters)[RenderSizeMultiplier], ((TILEHEIGHT * (*gameParameters)[TilesHigh]) + 4) * (*gameParameters)[RenderSizeMultiplier] };
int scoreDataPosition[2] = { 95, (TILEHEIGHT * (*gameParameters)[TilesHigh]) + 4 }; int scoreDataPosition[2] = { 95 * (*gameParameters)[RenderSizeMultiplier], ((TILEHEIGHT * (*gameParameters)[TilesHigh]) + 4) * (*gameParameters)[RenderSizeMultiplier] };
int speedLabelPosition[2] = { (TILEWIDTH * (*gameParameters)[TilesWide]) - 100, (TILEHEIGHT * (*gameParameters)[TilesHigh]) + 4 }; int speedLabelPosition[2] = { ((TILEWIDTH * (*gameParameters)[TilesWide]) - 100) * (*gameParameters)[RenderSizeMultiplier], ((TILEHEIGHT * (*gameParameters)[TilesHigh]) + 4) * (*gameParameters)[RenderSizeMultiplier] };
int speedDataPosition[2] = { (TILEWIDTH * (*gameParameters)[TilesWide]) - 25, (TILEHEIGHT * (*gameParameters)[TilesHigh]) + 4 }; int speedDataPosition[2] = { ((TILEWIDTH * (*gameParameters)[TilesWide]) - 25) * (*gameParameters)[RenderSizeMultiplier], ((TILEHEIGHT * (*gameParameters)[TilesHigh]) + 4) * (*gameParameters)[RenderSizeMultiplier] };
int gameOverMsgPosition[5] = { (TILEWIDTH * ((*gameParameters)[TilesWide] / 2)) - 147, (TILEWIDTH * ((*gameParameters)[TilesWide] / 2)) - 50, (TILEWIDTH * ((*gameParameters)[TilesWide] / 2)) + 61, (TILEWIDTH * ((*gameParameters)[TilesWide] / 2)) + 82, (TILEHEIGHT * (*gameParameters)[TilesHigh]) + 9 }; int gameOverMsgPosition[5] = { ((TILEWIDTH * ((*gameParameters)[TilesWide] / 2)) - 147) * (*gameParameters)[RenderSizeMultiplier], ((TILEWIDTH * ((*gameParameters)[TilesWide] / 2)) - 50) * (*gameParameters)[RenderSizeMultiplier], ((TILEWIDTH * ((*gameParameters)[TilesWide] / 2)) + 61) * (*gameParameters)[RenderSizeMultiplier], ((TILEWIDTH * ((*gameParameters)[TilesWide] / 2)) + 82) * (*gameParameters)[RenderSizeMultiplier], ((TILEHEIGHT * (*gameParameters)[TilesHigh]) + 9) * (*gameParameters)[RenderSizeMultiplier] };
char* gameOverMsg[4] = { "GAME OVER", "SPACE to RESTART", " or ", "ESC to QUIT" }; char* gameOverMsg[4] = { "GAME OVER", "SPACE to RESTART", " or ", "ESC to QUIT" };
char tempString[2][3] = { "-1", "-1" }; char tempString[2][3] = { "-1", "-1" };
@ -238,29 +238,29 @@ void gameLoop(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*ga
loadNPCs(screen, ppTiles, ppSprites, gameParameters); loadNPCs(screen, ppTiles, ppSprites, gameParameters);
// DRAW LABELS FOR SCORE AND SPEED RESPECTIVELY // DRAW LABELS FOR SCORE AND SPEED RESPECTIVELY
drawText(screen, "SCORE", DEFAULT_FONT_SIZE, scoreLabelPosition[0], scoreLabelPosition[1], SDL_ColourTextLabel); drawText(screen, "SCORE", DEFAULT_FONT_SIZE * (*gameParameters)[RenderSizeMultiplier], scoreLabelPosition[0], scoreLabelPosition[1], SDL_ColourTextLabel);
drawText(screen, "SPEED", DEFAULT_FONT_SIZE, speedLabelPosition[0], speedLabelPosition[1], SDL_ColourTextLabel); drawText(screen, "SPEED", DEFAULT_FONT_SIZE * (*gameParameters)[RenderSizeMultiplier], speedLabelPosition[0], speedLabelPosition[1], SDL_ColourTextLabel);
// LOOP UNTIL GAME IS FINISHED // LOOP UNTIL GAME IS FINISHED
while (1) { while (1) {
// UPDATE THE SNAKE'S SCORE WHEN IT CHANGES // UPDATE THE SNAKE'S SCORE WHEN IT CHANGES
if (atoi(tempString[0]) != (*gameParameters)[SnakeScore]) { if (atoi(tempString[0]) != (*gameParameters)[SnakeScore]) {
if (atoi(tempString[0]) != -1) { if (atoi(tempString[0]) != -1) {
drawText(screen, tempString[0], DEFAULT_FONT_SIZE, scoreDataPosition[0], scoreDataPosition[1], SDL_ColourBackground); drawText(screen, tempString[0], DEFAULT_FONT_SIZE * (*gameParameters)[RenderSizeMultiplier], scoreDataPosition[0], scoreDataPosition[1], SDL_ColourBackground);
} }
sprintf(tempString[0], "%d", (*gameParameters)[SnakeScore]); sprintf(tempString[0], "%d", (*gameParameters)[SnakeScore]);
drawText(screen, tempString[0], DEFAULT_FONT_SIZE, scoreDataPosition[0], scoreDataPosition[1], SDL_ColourTextData); drawText(screen, tempString[0], DEFAULT_FONT_SIZE * (*gameParameters)[RenderSizeMultiplier], scoreDataPosition[0], scoreDataPosition[1], SDL_ColourTextData);
} }
// UPDATE THE SNAKE'S SPEED WHEN IT CHANGES // UPDATE THE SNAKE'S SPEED WHEN IT CHANGES
if (atoi(tempString[1]) != (*gameParameters)[SnakeSpeed]) { if (atoi(tempString[1]) != (*gameParameters)[SnakeSpeed]) {
if (atoi(tempString[1]) != -1) { if (atoi(tempString[1]) != -1) {
drawText(screen, tempString[1], DEFAULT_FONT_SIZE, speedDataPosition[0], speedDataPosition[1], SDL_ColourBackground); drawText(screen, tempString[1], DEFAULT_FONT_SIZE * (*gameParameters)[RenderSizeMultiplier], speedDataPosition[0], speedDataPosition[1], SDL_ColourBackground);
} }
sprintf(tempString[1], "%d", (*gameParameters)[SnakeSpeed]); sprintf(tempString[1], "%d", (*gameParameters)[SnakeSpeed]);
drawText(screen, tempString[1], DEFAULT_FONT_SIZE, speedDataPosition[0], speedDataPosition[1], SDL_ColourTextData); drawText(screen, tempString[1], DEFAULT_FONT_SIZE * (*gameParameters)[RenderSizeMultiplier], speedDataPosition[0], speedDataPosition[1], SDL_ColourTextData);
} }
if (gameEventPoll(screen, ppTiles, ppSprites, gameParameters, event) == false) { if (gameEventPoll(screen, ppTiles, ppSprites, gameParameters, event) == false) {
@ -290,10 +290,10 @@ void gameLoop(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*ga
// DISPLAY GAME OVER MESSAGE AND WAIT FOR INPUT // DISPLAY GAME OVER MESSAGE AND WAIT FOR INPUT
if ((*gameParameters)[QuitGame] == 0) { if ((*gameParameters)[QuitGame] == 0) {
// DISPLAY GAMEOVER MESSAGES // DISPLAY GAMEOVER MESSAGES
drawText(screen, gameOverMsg[0], DEFAULT_FONT_SIZE - 7, gameOverMsgPosition[0], gameOverMsgPosition[4], SDL_ColourTextGameOver); drawText(screen, gameOverMsg[0], (DEFAULT_FONT_SIZE - 7) * (*gameParameters)[RenderSizeMultiplier], gameOverMsgPosition[0], gameOverMsgPosition[4], SDL_ColourTextGameOver);
drawText(screen, gameOverMsg[1], DEFAULT_FONT_SIZE - 9, gameOverMsgPosition[1], gameOverMsgPosition[4], SDL_ColourTextData); drawText(screen, gameOverMsg[1], (DEFAULT_FONT_SIZE - 9) * (*gameParameters)[RenderSizeMultiplier], gameOverMsgPosition[1], gameOverMsgPosition[4], SDL_ColourTextData);
drawText(screen, gameOverMsg[2], DEFAULT_FONT_SIZE - 9, gameOverMsgPosition[2], gameOverMsgPosition[4], SDL_ColourTextGameOver); drawText(screen, gameOverMsg[2], (DEFAULT_FONT_SIZE - 9) * (*gameParameters)[RenderSizeMultiplier], gameOverMsgPosition[2], gameOverMsgPosition[4], SDL_ColourTextGameOver);
drawText(screen, gameOverMsg[3], DEFAULT_FONT_SIZE - 9, gameOverMsgPosition[3], gameOverMsgPosition[4], SDL_ColourTextData); drawText(screen, gameOverMsg[3], (DEFAULT_FONT_SIZE - 9) * (*gameParameters)[RenderSizeMultiplier], gameOverMsgPosition[3], gameOverMsgPosition[4], SDL_ColourTextData);
SDL_Flip(screen); SDL_Flip(screen);
// WAIT A MOMENT TO ENSURE INPUT FROM THE GAME ISN'T CAUGHT // WAIT A MOMENT TO ENSURE INPUT FROM THE GAME ISN'T CAUGHT
@ -316,27 +316,27 @@ void gameLoop(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*ga
} }
} }
drawText(screen, gameOverMsg[0], DEFAULT_FONT_SIZE - 7, gameOverMsgPosition[0], gameOverMsgPosition[4], SDL_ColourBackground); drawText(screen, gameOverMsg[0], (DEFAULT_FONT_SIZE - 7) * (*gameParameters)[RenderSizeMultiplier], gameOverMsgPosition[0], gameOverMsgPosition[4], SDL_ColourBackground);
drawText(screen, gameOverMsg[1], DEFAULT_FONT_SIZE - 9, gameOverMsgPosition[1], gameOverMsgPosition[4], SDL_ColourBackground); drawText(screen, gameOverMsg[1], (DEFAULT_FONT_SIZE - 9) * (*gameParameters)[RenderSizeMultiplier], gameOverMsgPosition[1], gameOverMsgPosition[4], SDL_ColourBackground);
drawText(screen, gameOverMsg[2], DEFAULT_FONT_SIZE - 9, gameOverMsgPosition[2], gameOverMsgPosition[4], SDL_ColourBackground); drawText(screen, gameOverMsg[2], (DEFAULT_FONT_SIZE - 9) * (*gameParameters)[RenderSizeMultiplier], gameOverMsgPosition[2], gameOverMsgPosition[4], SDL_ColourBackground);
drawText(screen, gameOverMsg[3], DEFAULT_FONT_SIZE - 9, gameOverMsgPosition[3], gameOverMsgPosition[4], SDL_ColourBackground); drawText(screen, gameOverMsg[3], (DEFAULT_FONT_SIZE - 9) * (*gameParameters)[RenderSizeMultiplier], gameOverMsgPosition[3], gameOverMsgPosition[4], SDL_ColourBackground);
SDL_Flip(screen); SDL_Flip(screen);
} }
drawText(screen, "SCORE", DEFAULT_FONT_SIZE, scoreLabelPosition[0], scoreLabelPosition[1], SDL_ColourBackground); drawText(screen, "SCORE", DEFAULT_FONT_SIZE * (*gameParameters)[RenderSizeMultiplier], scoreLabelPosition[0], scoreLabelPosition[1], SDL_ColourBackground);
drawText(screen, "SPEED", DEFAULT_FONT_SIZE, speedLabelPosition[0], speedLabelPosition[1], SDL_ColourBackground); drawText(screen, "SPEED", DEFAULT_FONT_SIZE * (*gameParameters)[RenderSizeMultiplier], speedLabelPosition[0], speedLabelPosition[1], SDL_ColourBackground);
if (atoi(tempString[0]) != -1) { if (atoi(tempString[0]) != -1) {
drawText(screen, tempString[0], DEFAULT_FONT_SIZE, scoreDataPosition[0], scoreDataPosition[1], SDL_ColourBackground); drawText(screen, tempString[0], DEFAULT_FONT_SIZE * (*gameParameters)[RenderSizeMultiplier], scoreDataPosition[0], scoreDataPosition[1], SDL_ColourBackground);
} }
if (atoi(tempString[1]) != -1) { if (atoi(tempString[1]) != -1) {
drawText(screen, tempString[1], DEFAULT_FONT_SIZE, speedDataPosition[0], speedDataPosition[1], SDL_ColourBackground); drawText(screen, tempString[1], DEFAULT_FONT_SIZE * (*gameParameters)[RenderSizeMultiplier], speedDataPosition[0], speedDataPosition[1], SDL_ColourBackground);
} }
} }
// MOVES THE SNAKE IN THE DESIRED DIRECTION // MOVES THE SNAKE IN THE DESIRED DIRECTION
void moveSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8], enum direction newDirection) { void moveSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9], enum direction newDirection) {
int x; int x;
// MOVEMENT // MOVEMENT
@ -373,7 +373,7 @@ void moveSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*g
} }
// DETECT+HANDLE WHEN THE SNAKE COLLIDES WITH WALLS, BLOCKS, ITSELF OR FOOD // DETECT+HANDLE WHEN THE SNAKE COLLIDES WITH WALLS, BLOCKS, ITSELF OR FOOD
bool collisionDetect(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8], enum direction newDirection) { bool collisionDetect(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9], enum direction newDirection) {
int x; int x;
switch (newDirection) { switch (newDirection) {
@ -454,7 +454,7 @@ bool collisionDetect(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, i
} }
// HANDLES COLLISION WITH FOOD // HANDLES COLLISION WITH FOOD
void collisionDetectFood(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8]) { void collisionDetectFood(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9]) {
// INCREASE THE SNAKE'S SIZE IF IT'S NOT ALREADY THE MAXIMUM // INCREASE THE SNAKE'S SIZE IF IT'S NOT ALREADY THE MAXIMUM
if ((*gameParameters)[SnakeLength] < MAX_SNAKELENGTH) { if ((*gameParameters)[SnakeLength] < MAX_SNAKELENGTH) {
(*gameParameters)[SnakeLength]++; (*gameParameters)[SnakeLength]++;
@ -476,7 +476,7 @@ void collisionDetectFood(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprite
} }
// CAPTURES INPUT AND GENERATES APPROPRIATE RESPONSE // CAPTURES INPUT AND GENERATES APPROPRIATE RESPONSE
bool gameEventPoll(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8], SDL_Event* event) { bool gameEventPoll(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9], SDL_Event* event) {
bool playerAlive = true; bool playerAlive = true;
if (SDL_PollEvent(event)) { if (SDL_PollEvent(event)) {
@ -546,7 +546,7 @@ bool gameEventPoll(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int
} }
// MOVES SNAKE AUTOMATICALLY IN WHICHEVER DIRECTION IT WENT LAST // MOVES SNAKE AUTOMATICALLY IN WHICHEVER DIRECTION IT WENT LAST
bool scrollSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8]) { bool scrollSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9]) {
bool playerAlive = true; bool playerAlive = true;
switch ((*gameParameters)[SnakeDirection]) { switch ((*gameParameters)[SnakeDirection]) {
@ -574,7 +574,7 @@ bool scrollSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (
} }
// REDRAW THE SNAKE BASED ON CURRENT VALUES // REDRAW THE SNAKE BASED ON CURRENT VALUES
void updateSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8]) { void updateSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9]) {
int x; int x;
for (x = (*gameParameters)[NPCCount]; x < (*gameParameters)[NPCCount] + (*gameParameters)[SnakeLength]; x++) { for (x = (*gameParameters)[NPCCount]; x < (*gameParameters)[NPCCount] + (*gameParameters)[SnakeLength]; x++) {
@ -591,7 +591,7 @@ void updateSnake(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (
} }
// DRAW NPCs BASED ON ON CURRENT VALUES // DRAW NPCs BASED ON ON CURRENT VALUES
void loadNPCs(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[8]) { void loadNPCs(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*gameParameters)[9]) {
int x, startNPCs = 0; int x, startNPCs = 0;
for (x = startNPCs; x < (*gameParameters)[NPCCount]; x++) { for (x = startNPCs; x < (*gameParameters)[NPCCount]; x++) {
@ -604,7 +604,7 @@ void loadNPCs(SDL_Surface* screen, SDL_Rect** ppTiles, int** ppSprites, int (*ga
} }
// A HELPER FUNCTION TO RANDOMLY PLACE NPCs WITH SOME INTELLIGENCE // A HELPER FUNCTION TO RANDOMLY PLACE NPCs WITH SOME INTELLIGENCE
void randomLocation(int** ppSprites, int (*gameParameters)[8], int* location[2]) { void randomLocation(int** ppSprites, int (*gameParameters)[9], int* location[2]) {
int x, randLocation[2]; int x, randLocation[2];
bool isAcceptable = false; bool isAcceptable = false;
@ -662,7 +662,7 @@ void updateRect(SDL_Surface* screen, SDL_Rect** ppTiles, int position[2], const
} }
// PARSES COMMANDLINE OPTIONS AND GENERATES APPROPRIATE RESPONSE // PARSES COMMANDLINE OPTIONS AND GENERATES APPROPRIATE RESPONSE
void configureGame(int argc, char** args, int (*gameParameters)[8]) { void configureGame(int argc, char** args, int (*gameParameters)[9]) {
int parsecount = 1; int parsecount = 1;
// SET DEFAULT GAME PARAMETERS // SET DEFAULT GAME PARAMETERS
@ -674,6 +674,7 @@ void configureGame(int argc, char** args, int (*gameParameters)[8]) {
(*gameParameters)[SnakeLength] = DEFAULT_SNAKELENGTH; (*gameParameters)[SnakeLength] = DEFAULT_SNAKELENGTH;
(*gameParameters)[SnakeDirection] = -1; (*gameParameters)[SnakeDirection] = -1;
(*gameParameters)[SnakeScore] = 0; (*gameParameters)[SnakeScore] = 0;
(*gameParameters)[RenderSizeMultiplier] = 1;
// PARSE COMMANDLINE FOR SETTINGS // PARSE COMMANDLINE FOR SETTINGS
while (parsecount < argc) { while (parsecount < argc) {
@ -738,6 +739,10 @@ void configureGame(int argc, char** args, int (*gameParameters)[8]) {
printErrorHelp(args[0]); printErrorHelp(args[0]);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
} else if (strcmp(args[parsecount], "-2") == 0) {
// DOUBLE RESOLUTION
(*gameParameters)[RenderSizeMultiplier] = 2;
parsecount++;
} else { } else {
// FAIL IF ANYTHING ELSE // FAIL IF ANYTHING ELSE
printErrorHelp(args[0]); printErrorHelp(args[0]);
@ -754,6 +759,7 @@ void printHelpMenu(char filename[]) {
fprintf(stdout, " -b [blocks]\t\tSet the number of blocks: between [%d] and [%d] (DEFAULT: [%d])\n", MIN_NPCCOUNT - 1, MAX_NPCCOUNT - 1, DEFAULT_NPCCOUNT - 1); fprintf(stdout, " -b [blocks]\t\tSet the number of blocks: between [%d] and [%d] (DEFAULT: [%d])\n", MIN_NPCCOUNT - 1, MAX_NPCCOUNT - 1, DEFAULT_NPCCOUNT - 1);
fprintf(stdout, " -l [length]\t\tSet the snake's starting length: between [%d] and [%d] (DEFAULT: [%d])\n", MIN_SNAKELENGTH - 1, MAX_SNAKELENGTH - 1, DEFAULT_SNAKELENGTH - 1); fprintf(stdout, " -l [length]\t\tSet the snake's starting length: between [%d] and [%d] (DEFAULT: [%d])\n", MIN_SNAKELENGTH - 1, MAX_SNAKELENGTH - 1, DEFAULT_SNAKELENGTH - 1);
fprintf(stdout, " -s [speed]\t\tSet the snake's starting speed: between [%d] and [%d] (DEFAULT: [%d])\n", MIN_SNAKESPEED, MAX_SNAKESPEED, DEFAULT_SNAKESPEED); fprintf(stdout, " -s [speed]\t\tSet the snake's starting speed: between [%d] and [%d] (DEFAULT: [%d])\n", MIN_SNAKESPEED, MAX_SNAKESPEED, DEFAULT_SNAKESPEED);
fprintf(stdout, " -2\t\t\tDouble the size the game renders at\n");
fprintf(stdout, " -h\t\t\tDisplay help information\n"); fprintf(stdout, " -h\t\t\tDisplay help information\n");
} }