ref: aa02e9a501d74e6be6e0641e00d34c8acfda56ba
parent: 827edd452c5ab38b06df4d91824a03c9738a1783
author: David <gek@katherine>
date: Tue Mar 2 17:42:53 EST 2021
Update
--- a/SDL_Examples/Makefile
+++ b/SDL_Examples/Makefile
@@ -3,7 +3,7 @@
#CFLAGS = -g -Wall -O3 -w
GL_LIBS= -L../
GL_INCLUDES= -I../include/
-ALL_T= gears texture model helloworld
+ALL_T= gears texture model helloworld menu
LIB= ../lib/libTinyGL.a
#For GCC on good OSes:
@@ -17,7 +17,6 @@
all: $(ALL_T)
clean:
rm -f $(ALL_T) *.exe
- rm -f menu
texture:
$(CC) texture.c $(LIB) -o texture $(GL_INCLUDES) $(SDL_LIBS) $(SDL_MIXERLIBS) $(GL_LIBS) $(CFLAGS) -lm
menu:
--- a/SDL_Examples/menu.c
+++ b/SDL_Examples/menu.c
@@ -22,42 +22,48 @@
#else
typedef unsigned char uchar;
#endif
-#define STB_IMAGE_IMPLEMENTATION
-#include "include/stb_image.h"
#include <SDL/SDL.h>
+
#ifndef M_PI
#define M_PI 3.14159265
#endif
-GLuint tex = 0;
int winSizeX = 640;
int winSizeY = 480;
+int mousepos[2];
+int mb = 0;
double tpassed = 0;
+int isRunning = 1;
-GLuint loadRGBTexture(unsigned char* buf, unsigned int w, unsigned int h) {- GLuint t = 0;
- glGenTextures(1, &t);
- // for(unsigned int i = 0; i < w * h; i++)
- // {- // unsigned char t = 0;
- // unsigned char* r = buf + i*3;
- // // unsigned char* g = buf + i*3+1;
- // unsigned char* b = buf + i*3+2;
- // t = *r;
- // *r = *b;
- // *b = t;
- // }
- glBindTexture(GL_TEXTURE_2D, t);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexImage2D(GL_TEXTURE_2D, 0, 3, w, h, 0, GL_RGB, GL_UNSIGNED_BYTE, buf);
- return t;
+#define BEGIN_EVENT_HANDLER void events(SDL_Event* e){switch(e->type){+#define E_KEYSYM e->key.keysym.sym
+
+#define END_EVENT_HANDLER }}
+#define EVENT_HANDLER events
+#define E_MOTION e->motion
+#define E_BUTTON e->button.button
+#define E_WINEVENT e->window.event
+#define E_WINW e->window.data1
+#define E_WINH e->window.data2
+
+vec3 mouse_to_normal(){+ vec3 r;
+ r.d[0] = mousepos[0] / (float) winSizeX;
+ r.d[1] = mousepos[1] / (float) winSizeY;
+ return r;
}
-void drawBox(GLfloat x, GLfloat y, GLfloat xdim, GLfloat ydim){ //0,0 is top left, 1,1 is bottom right+int drawBox(GLfloat x, GLfloat y, GLfloat xdim, GLfloat ydim){ //0,0 is top left, 1,1 is bottom right+ vec3 r = mouse_to_normal();
+ int retval = 0;
+ if(
+ (x <= r.d[0]) &&
+ (x+xdim >= r.d[0]) &&
+ (y <= r.d[1]) &&
+ (y+ydim >= r.d[1])
+ ) retval = 1;
+
x*=2;xdim*=2;
y*=2;ydim*=2;
glBegin(GL_TRIANGLES);
@@ -80,12 +86,26 @@
glTexCoord2f(1, -1);
glVertex3f(-1+x+xdim, 1-y , 0.5); //Top Right Corner
glEnd();
+ return retval;
}
-void drawTB(const char* text, GLuint textcolor, GLfloat x, GLfloat y, GLint size){+
+
+void drawMouse(){+ vec3 r;
+ r.d[0] = mousepos[0] / (float) winSizeX;
+ r.d[1] = mousepos[1] / (float) winSizeY;
+ if(!mb)
+ glColor3f(0.7,0.7,0.7);
+ else
+ glColor3f(1.0,0.1,0.1);
+ drawBox(r.d[0], r.d[1], 0.03, 0.03);
+}
+
+int drawTB(const char* text, GLuint textcolor, GLfloat x, GLfloat y, GLint size){size = (size>64)?64:((size<8)?8:size);
size >>= 3; //divide by 8 to get the GLTEXTSIZE
- if(!size || !text) return;
+ if(!size || !text) return 0;
int mw = 0, h = 1, cw = 0; //max width, height, current width
for(int i = 0; text[i] != '\0' && (text[i] & 127);i++){if(text[i] != '\n')
@@ -98,40 +118,21 @@
float bw = 3*size/(float)winSizeX;
float h_ = (size)*8*(h)/(float)winSizeY;
float bh = 3*size/(float)winSizeY;
- drawBox(x-bw/2,y-bh/2, w+bw, h_+bh);
+ int retval = drawBox(x-bw/2,y-bh/2, w+bw, h_+bh);
glTextSize(size);
glDrawText((unsigned char*)text, x*winSizeX, y*winSizeY, textcolor);
+ return retval;
}
+int haveclicked = 0;
+vec3 tbcoords = (vec3){{0.4,0.4,0}}; void draw() {- glEnable(GL_TEXTURE_2D);
- glBindTexture(GL_TEXTURE_2D, tex);
- glBegin(GL_TRIANGLES);
- // TRIANGLE 1,
- glTexCoord2f(0, 0);
- glVertex3f(-1, -1, 0.5);
-
- glTexCoord2f(1, -1);
- glVertex3f(1, 1, 0.5);
-
- glTexCoord2f(0, -1);
- glVertex3f(-1, 1, 0.5);
- // TRIANGLE 2
- glTexCoord2f(0, 0);
- glVertex3f(-1, -1, 0.5);
-
- glTexCoord2f(1, 0);
- glVertex3f(1, -1, 0.5);
-
- glTexCoord2f(1, -1);
- glVertex3f(1, 1, 0.5);
- glEnd();
- glColor4f(1,1,1,1);
- //glDisable(GL_TEXTURE_2D);
- drawBox(0.8,0.8,0.2,0.2);
glColor3f(1,1,1);
- glDisable(GL_TEXTURE_2D);
- drawTB("I hate text", 0x00, 0.4, 0.4 + 0.1 * sinf(tpassed),24);+ if(drawTB("I hate text", 0x00, tbcoords.d[0], tbcoords.d[1],16) && mb > 0)+ puts("Detected click!\n");+ else
+ puts("No Click!\n");+ drawMouse();
}
void initScene() {@@ -147,7 +148,8 @@
glDisable( GL_CULL_FACE );
glDisable(GL_BLEND);
//glEnable(GL_LIGHTING);
- glEnable(GL_TEXTURE_2D);
+ //glEnable(GL_TEXTURE_2D);
+ glDisable(GL_TEXTURE_2D);
glDisable(GL_LIGHTING);
// glEnable( GL_LIGHT0 );
glDisable(GL_DEPTH_TEST);
@@ -154,22 +156,59 @@
glDepthMask(GL_FALSE);
glShadeModel(GL_SMOOTH);
glTextSize(GL_TEXT_SIZE24x24);
- {- int sw = 0, sh = 0, sc = 0; // sc goes unused.
- uchar* source_data = stbi_load("texture.png", &sw, &sh, &sc, 3);- if (source_data) {- tex = loadRGBTexture(source_data, sw, sh);
- free(source_data);
- } else {- printf("\nCan't load texture!\n");- }
- }
glEnable(GL_NORMALIZE);
}
+
+
+
+
+BEGIN_EVENT_HANDLER
+ case SDL_KEYDOWN:
+ switch(E_KEYSYM){+ case SDLK_ESCAPE:
+ case SDLK_q:
+ isRunning = 0;
+ break;
+ case SDLK_UP: mousepos[1] -= 4; mousepos[1]%= winSizeY; break;
+ case SDLK_DOWN: mousepos[1] += 4;mousepos[1]%= winSizeY; break;
+ case SDLK_LEFT: mousepos[0] -= 4;mousepos[0]%= winSizeX; break;
+ case SDLK_RIGHT: mousepos[0] += 4;mousepos[0]%= winSizeX; break;
+ case SDLK_SPACE: case SDLK_RETURN:
+ mb = 1;
+ break;
+ default: break;
+ }
+ break;
+ case SDL_KEYUP:
+ switch(E_KEYSYM){+ case SDLK_SPACE: case SDLK_RETURN:
+ mb = 0;
+ break;
+ default: break;
+ }
+ break;
+ case SDL_QUIT:isRunning = 0;break;
+ case SDL_MOUSEBUTTONDOWN:
+ if(E_BUTTON==SDL_BUTTON_LEFT) mb = 1;
+ if(E_BUTTON==SDL_BUTTON_RIGHT) {+ tbcoords = mouse_to_normal();
+ }
+ break;
+ case SDL_MOUSEBUTTONUP:
+ if(E_BUTTON==SDL_BUTTON_LEFT) mb = 0;
+ break;
+ case SDL_MOUSEMOTION:
+ mousepos[0] = E_MOTION.x;
+ mousepos[1] = E_MOTION.y;
+ break;
+END_EVENT_HANDLER
+
+
int main(int argc, char** argv) {// initialize SDL video:
-
+
+
unsigned int fps = 0;
char needsRGBAFix = 0;
if (argc > 2) {@@ -267,29 +306,15 @@
unsigned int tLastFps = tNow;
// main loop:
- int isRunning = 1;
+
while (isRunning) {++frames;
tpassed += frames * 16.666666/1000.0;
tNow = SDL_GetTicks();
// do event handling:
- SDL_Event evt;
- while (SDL_PollEvent(&evt))
- switch (evt.type) {- case SDL_KEYDOWN:
- switch (evt.key.keysym.sym) {- break;
- case SDLK_ESCAPE:
- case SDLK_q:
- isRunning = 0;
- default:
- break;
- }
- break;
- case SDL_QUIT:
- isRunning = 0;
- break;
- }
+ SDL_Event ev;
+ SDL_Event* e = &ev;
+ while (SDL_PollEvent(e)) events(e);
// draw scene:
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -331,13 +356,13 @@
}
// update fps:
if (tNow >= tLastFps + 5000) {- printf("%i frames in %f secs, %f frames per second.\n", frames, (float)(tNow - tLastFps) * 0.001f,+ printf("%llu frames in %f secs, %f frames per second.\n", frames, (float)(tNow - tLastFps) * 0.001f,(float)frames * 1000.0f / (float)(tNow - tLastFps));
tLastFps = tNow;
frames = 0;
}
}
- printf("%i frames in %f secs, %f frames per second.\n", frames, (float)(tNow - tLastFps) * 0.001f, (float)frames * 1000.0f / (float)(tNow - tLastFps));+ printf("%llu frames in %f secs, %f frames per second.\n", frames, (float)(tNow - tLastFps) * 0.001f, (float)frames * 1000.0f / (float)(tNow - tLastFps));// cleanup:
ZB_close(frameBuffer);
glClose();
@@ -348,6 +373,7 @@
Mix_FreeMusic(myTrack);
acleanup();
#endif
+
SDL_Quit();
return 0;
}