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Added text rendering using SDL_TTF, level counter, game over message, and if statement to stop the game updating once the game is over

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This commit is contained in:
Joe Adams 2018-01-11 14:14:58 +00:00
parent 8082423e0c
commit daa48a0e6d
1 changed files with 64 additions and 7 deletions
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71
breakout/breakout.c
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@ -70,6 +70,7 @@ double heronsFormula(coord a, coord b, coord c) {
} }
int loadTextures(GLuint *texture, const char *imageLoc); int loadTextures(GLuint *texture, const char *imageLoc);
void surfaceToTexture(GLuint *texture, SDL_Surface *surface);
char vertexWithinQuad(coord point, coord *quad); char vertexWithinQuad(coord point, coord *quad);
@ -77,6 +78,34 @@ void updatePaddle(Uint32 tickrate, paddle *thePaddle, char moveX, int winWidth,
void updateBall(Uint32 tickrate, ball *theBall, paddle *thePaddle, int winWidth, int winHeight, brick *bricks, int brickCount, int *playerLives); void updateBall(Uint32 tickrate, ball *theBall, paddle *thePaddle, int winWidth, int winHeight, brick *bricks, int brickCount, int *playerLives);
void updateScore(int *playerScore, brick *bricks, int brickCount); void updateScore(int *playerScore, brick *bricks, int brickCount);
void drawText(const char *text, TTF_Font *font, SDL_Color txtColour, coord loc) {
SDL_Surface *text_surface = TTF_RenderUTF8_Blended(font, text, txtColour);
if (text_surface==NULL) {
fprintf(stderr, "Error generating text");
} else {
GLuint testTxt;
surfaceToTexture(&testTxt, text_surface);
glBindTexture(GL_TEXTURE_2D, testTxt);
GLint matrixmode = 0;
glGetIntegerv(GL_MATRIX_MODE, &matrixmode);
glPushMatrix();
glTranslated(loc.x-(text_surface->w/2), loc.y, 0.0);
glBegin(GL_QUADS);
glTexCoord2f(0, 0); glVertex3d(0.0, 0.0, 0.0);
glTexCoord2f(0, 1); glVertex3d(0.0, -1*text_surface->h, 0.0);
glTexCoord2f(1, 1); glVertex3d(text_surface->w, -1*text_surface->h, 0.0);
glTexCoord2f(1, 0); glVertex3d(text_surface->w, 0.0, 0.0);
glEnd();
glBindTexture(GL_TEXTURE_2D, 0);
glPopMatrix();
glMatrixMode(matrixmode);
}
}
void drawHearts(GLuint heartFullTex, GLuint heartEmptyTex, int playerLives, int winWidth, int winHeight); void drawHearts(GLuint heartFullTex, GLuint heartEmptyTex, int playerLives, int winWidth, int winHeight);
void drawPaddle(paddle *thePaddle, int winWidth, int winHeight, colour *c); void drawPaddle(paddle *thePaddle, int winWidth, int winHeight, colour *c);
void drawBall(ball *theBall, colour *c); void drawBall(ball *theBall, colour *c);
@ -228,8 +257,11 @@ int main(void) {
.x = (winWidth/2)-(thePaddle.width/2) .x = (winWidth/2)-(thePaddle.width/2)
}; };
int playerScore = 0; char txtL[4] = "000";
char txtR[4] = "000";
int playerScore = 0;
int level = 1;
int playerLives = 3; int playerLives = 3;
/* /*
@ -238,7 +270,7 @@ int main(void) {
* ---------------- * ----------------
*/ */
TTF_Font* font_main = TTF_OpenFont("assets/font_main.ttf", 24); TTF_Font* font_main = TTF_OpenFont("assets/font_main.ttf", 56);
if (font_main == NULL) { if (font_main == NULL) {
printf("[FAILED] Unable to load font\n"); printf("[FAILED] Unable to load font\n");
return 5; return 5;
@ -263,6 +295,7 @@ int main(void) {
loadTextures(&heartFullTex, "assets/heartFull.png") > 1) { loadTextures(&heartFullTex, "assets/heartFull.png") > 1) {
return 6; return 6;
} }
/* /*
* ---------------- * ----------------
* Let's go! * Let's go!
@ -327,11 +360,12 @@ int main(void) {
* ---------------- * ----------------
*/ */
updatePaddle(tickrate, &thePaddle, moveX, winWidth, winHeight); if (playerLives > 0) {
updateBall(tickrate, &theBall, &thePaddle, winWidth, winHeight, &bricks, brickCount, &playerLives); sprintf(txtL, "%03d", playerScore);
updateScore(&playerScore, &bricks, brickCount); sprintf(txtR, "%03d", level);
if (playerLives < 1) { updatePaddle(tickrate, &thePaddle, moveX, winWidth, winHeight);
go = 0; updateBall(tickrate, &theBall, &thePaddle, winWidth, winHeight, &bricks, brickCount, &playerLives);
updateScore(&playerScore, &bricks, brickCount);
} }
if (step % (subSteps+1) == 0) { if (step % (subSteps+1) == 0) {
@ -363,6 +397,12 @@ int main(void) {
bgcol1.b = 0.6078; /*155*/ bgcol2.b = 0.4431; /*113*/ bgcol1.b = 0.6078; /*155*/ bgcol2.b = 0.4431; /*113*/
bgcol1.a = 1.0000; /*255*/ bgcol2.a = 1.0000; /*255*/ bgcol1.a = 1.0000; /*255*/ bgcol2.a = 1.0000; /*255*/
if (playerLives==0) {
drawText("Game Over", font_main, textColour, (coord){ .x=0, .y=-128});
}
drawText(txtL, font_main, textColour, (coord){ .x=-128, .y=(winHeight/2)-32 });
drawText(txtR, font_main, textColour, (coord){ .x=128, .y=(winHeight/2)-32 });
drawHearts(heartFullTex, heartEmptyTex, playerLives, winWidth, winHeight); drawHearts(heartFullTex, heartEmptyTex, playerLives, winWidth, winHeight);
drawPaddle(&thePaddle, winWidth, winHeight, &paddleCol); drawPaddle(&thePaddle, winWidth, winHeight, &paddleCol);
drawBall(&theBall, &paddleCol); drawBall(&theBall, &paddleCol);
@ -425,6 +465,23 @@ int loadTextures(GLuint *texture, const char *imageLoc) {
return 0; return 0;
} }
void surfaceToTexture(GLuint *texture, SDL_Surface *surface) {
*texture = 0;
int Mode = GL_RGB;
glGenTextures(1, texture);
glBindTexture(GL_TEXTURE_2D, *texture);
if (surface->format->BytesPerPixel == 4) {
Mode = GL_RGBA;
}
glTexImage2D(GL_TEXTURE_2D, 0, Mode, surface->w, surface->h, 0, Mode, GL_UNSIGNED_BYTE, surface->pixels);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
char vertexWithinQuad(coord point, coord *quad) { char vertexWithinQuad(coord point, coord *quad) {
double quadArea = heronsFormula(quad[0], quad[1], quad[2]) + heronsFormula(quad[1], quad[2], quad[3]); double quadArea = heronsFormula(quad[0], quad[1], quad[2]) + heronsFormula(quad[1], quad[2], quad[3]);
double testArea = 0; double testArea = 0;