void clearsheet(void)
/* Clears the current spreadsheet */
{
int col, row;
for (row = 0; row <= lastrow; row++)
{
for (col = 0; col <= lastcol; col++)
deletecell(col, row, NOUPDATE);
}
initvars();
setrightcol();
setbottomrow();
displayscreen(NOUPDATE);
printfreemem();
changed = FALSE;
} /* clearsheet */
void insertcol(int col)
/* Inserts a column */
{
int counter, row;
if (lastcol == MAXCOLS - 1)
{
for (counter = 0; counter <= lastrow; counter++)
deletecell(lastcol, counter, NOUPDATE);
printfreemem();
}
if (col != MAXCOLS - 1)
{
movmem(&cell[col][0], &cell[col + 1][0], MAXROWS * sizeof(CELLPTR) *
(MAXCOLS - col - 1));
movmem(&format[col][0], &format[col + 1][0], MAXROWS * (MAXCOLS - col - 1));
movmem(&colwidth[col], &colwidth[col + 1], MAXCOLS - col - 1);
}
setmem(&cell[col][0], MAXROWS * sizeof(CELLPTR), 0);
setmem(&format[col][0], MAXROWS, DEFAULTFORMAT);
colwidth[col] = DEFAULTWIDTH;
lastcol = MAXCOLS - 1;
setlastcol();
setrightcol();
if (curcol > rightcol)
{
rightcol++;
setleftcol();
}
for (counter = 0; counter <= lastcol; counter++)
{
for (row = 0; row <= lastrow; row++)
{
if ((cell[counter][row] != NULL) &&
(cell[counter][row]->attrib == FORMULA))
fixformula(counter, row, COLADD, col);
updateoflags(col, row, NOUPDATE);
}
}
while (col <= rightcol)
displaycol(col++, NOUPDATE);
changed = TRUE;
recalc();
} /* insertcol */
void mainmenu(void)
/* Executes the commands in the main menu */
{
switch(getcommand(MENU, COMMAND))
{
case 0 :
smenu();
break;
case 1 :
formatcells();
break;
case 2 :
deletecell(curcol, currow, UPDATE);
printfreemem();
if (autocalc)
recalc();
break;
case 3 :
gotocell();
break;
case 4 :
cmenu();
break;
case 5 :
rmenu();
break;
case 6 :
editcell(curcell);
break;
case 7 :
umenu();
break;
case 8 :
changeautocalc(!autocalc);
break;
case 9 :
checkforsave();
stop = TRUE;
break;
} /* switch */
} /* mainmenu */
void insertrow(int row)
/* Inserts a row */
{
int counter, rowc;
if (lastrow == MAXROWS - 1)
{
for (counter = 0; counter <= lastcol; counter++)
deletecell(counter, lastrow, NOUPDATE);
printfreemem();
}
if (row != MAXROWS - 1)
{
for (counter = 0; counter < MAXCOLS; counter++)
{
movmem(&cell[counter][row], &cell[counter][row + 1],
sizeof(CELLPTR) * (MAXROWS - row - 1));
movmem(&format[counter][row], &format[counter][row + 1], MAXROWS - row - 1);
}
}
for (counter = 0; counter < MAXCOLS; counter++)
{
cell[counter][row] = NULL;
format[counter][row] = DEFAULTFORMAT;
}
lastrow = MAXROWS - 1;
setlastrow();
for (counter = 0; counter <= lastcol; counter++)
{
for (rowc = 0; rowc <= lastrow; rowc++)
{
if ((cell[counter][rowc] != NULL) &&
(cell[counter][rowc]->attrib == FORMULA))
fixformula(counter, rowc, ROWADD, row);
}
}
while (row <= bottomrow)
displayrow(row++, NOUPDATE);
changed = TRUE;
recalc();
} /* insertrow */
void deleterow(int row)
/* Deletes a row */
{
int counter, rowc;
for (counter = 0; counter <= lastcol; counter++)
deletecell(counter, row, NOUPDATE);
printfreemem();
if (row != MAXROWS - 1)
{
for (counter = 0; counter < MAXCOLS; counter++)
{
movmem(&cell[counter][row + 1], &cell[counter][row],
sizeof(CELLPTR) * (MAXROWS - row - 1));
movmem(&format[counter][row + 1], &format[counter][row], MAXROWS - row - 1);
}
}
else
{
for (counter = 0; counter <= lastcol; counter++)
{
cell[counter][MAXROWS - 1] = NULL;
format[counter][MAXROWS - 1] = DEFAULTFORMAT;
}
}
if ((lastrow >= row) && (lastrow > 0))
lastrow--;
for (counter = 0; counter <= lastcol; counter++)
{
for (rowc = 0; rowc <= lastrow; rowc++)
{
if ((cell[counter][rowc] != NULL) &&
(cell[counter][rowc]->attrib == FORMULA))
fixformula(counter, rowc, ROWDEL, row);
}
}
while (row <= bottomrow)
displayrow(row++, NOUPDATE);
changed = TRUE;
recalc();
} /* deleterow */
void act(char *s)
/* Acts on a particular input */
{
int attrib, allocated;
double value;
deletecell(curcol, currow, UPDATE);
value = parse(s, &attrib);
switch(attrib)
{
case TEXT :
allocated = alloctext(curcol, currow, s);
if (allocated)
displaycell(curcol, currow, NOHIGHLIGHT, NOUPDATE);
break;
case VALUE :
allocated = allocvalue(curcol, currow, value);
break;
case FORMULA :
allocated = allocformula(curcol, currow, s, value);
break;
} /* switch */
if (allocated)
{
format[curcol][currow] &= ~OVERWRITE;
clearoflags(curcol + 1, currow, UPDATE);
if (attrib == TEXT)
setoflags(curcol, currow, UPDATE);
if (curcol > lastcol)
lastcol = curcol;
if (currow > lastrow)
lastrow = currow;
if (autocalc)
recalc();
}
else
errormsg(MSGLOMEM);
printfreemem();
} /* act */
int main( int argc, char* args[] )
{
//get a random seed.
srand(time(NULL));
//mouse variables and cell types
int x, y, sleepTime = 0, countVar = 0;
//mouse is held variables
int mouseStatusLeft = 0, mouseStatusRight = 0;
//make sure the program waits for a quit
int quit = false;
//Initialize
if( init() == false ) return 1;
//Load the files
if( load_files() == false ) return 2;
//Update the screen
//if( SDL_Flip( screen ) == -1 ) return 3;
//if(SDL_RenderPresent( screen ) == -1 ) return 3;
//initialize the cell stuff. This gets the cell system up and running. This also sets all cells to m_air and all the saturation to m_no_saturaion
init_cell_stuff();
/*
CELL_SIZE = 4;
int i;//
//putting test materials into grid
for(i=0; i<GRID_WIDTH; i++){
if(get_rand(1,4)==1)
grid[i+camera_x][GRID_HEIGHT-1-get_rand(7,15)+camera_y].mat = m_plant_root;
if(get_rand(1,10)==10)
grid[i+camera_x][camera_y+get_rand(20,35)].mat = m_spring;
grid[i+camera_x][camera_y+get_rand(30,34)+30].mat = m_earth;
grid[i+camera_x][camera_y+get_rand(30,34)+30].mat = m_earth;
grid[i+camera_x][camera_y+get_rand(30,34)+30].mat = m_earth;
}
*/
CELL_SIZE = 8;
sleepTime = 0;
//int i;//
//putting test materials into grid
/*
for(i=7 ; i<GRID_WIDTH ; i+=15){
for(j=26 ; j<GRID_HEIGHT ; j+=20){
grid[i][j].mat = m_anti_scurge;
}
}
*/
//--------------------------------------
//for(i=0 ; i<GRID_WIDTH*GRID_HEIGHT / 2 ; i++)
// grid[get_rand(0,GRID_WIDTH-1)][get_rand(0,GRID_HEIGHT-1)].mat = m_plant;
//int keyw=0, keya=0, keys=0, keyd=0;
//unsigned lastPanTime = 0;
bool alt = 0; // this keeps track of the state of the alt key
//these variables store the position of the user's cursor at the moment that the user decided to pan the screen
int mouse_x_when_pan=0;
int mouse_y_when_pan=0;
// these are for keeping track of the motion of the mouse when the user is panning. these keep the panning from being really jumpy.
// without them, there is a truncation error when adjusting the camera_x and camera_y materials and re-setting the mouse coordinates to its original state.
// these keep track of the truncation error and add it to the next operation so that the mouse motion feels fluid.
int remainder_panning_motion_x=0;
int remainder_panning_motion_y=0;
//last minute verification that the initial start up values for the grid size and the camera positions are valid.
verify_grid_and_cell_size();
verify_camera();
//While the user hasn't quit
while(1){
//While there's an event to handle
while( SDL_PollEvent( &event ) ){
//If the user has Xed out the window
if( event.type == SDL_QUIT || quit == true ){
//Quit the program
clean_up();
return 0;
}
if( event.type == SDL_MOUSEBUTTONDOWN ){ /// mouse down
x = event.motion.x;
y = event.motion.y;
if( event.button.button == SDL_BUTTON_LEFT ){
mouseStatusLeft = 1;
}
else if( event.button.button == SDL_BUTTON_RIGHT ){
mouseStatusRight = 1;
}
}
else if(event.type == SDL_MOUSEWHEEL){
if(event.wheel.y > 0)
zoom_in(x,y);
if(event.wheel.y < 0)
zoom_out(x,y);
}
else if(event.type == SDL_MOUSEBUTTONUP){ /// mouse up
x = event.motion.x;
y = event.motion.y;
if( event.button.button == SDL_BUTTON_LEFT ){
mouseStatusLeft = 0;
}
else if( event.button.button == SDL_BUTTON_RIGHT ){
mouseStatusRight = 0;
}
}
else if( event.type == SDL_MOUSEMOTION ){ /// mouse motion
x = event.motion.x;
y = event.motion.y;
// if the alt key (camera panning key) is down and the coordinates have changed, then let the screen be panned!
if(alt && x != mouse_x_when_pan && y != mouse_y_when_pan){
// this adjusts the x-axis camera (this scales with the CELL_SIZE)
camera_x += (x-mouse_x_when_pan+remainder_panning_motion_x)/CELL_SIZE;
camera_y += (y-mouse_y_when_pan+remainder_panning_motion_y)/CELL_SIZE;
//calculate the remainders of the mouse motion.
// these values represent the motion of the mouse that is not utilized by the discrete nature of the operation on the camera_x and camera_y values.
remainder_panning_motion_x = (x-mouse_x_when_pan+remainder_panning_motion_x) - (int)((x-mouse_x_when_pan+remainder_panning_motion_x)/CELL_SIZE)*CELL_SIZE;
remainder_panning_motion_y = (y-mouse_y_when_pan+remainder_panning_motion_y) - (int)((y-mouse_y_when_pan+remainder_panning_motion_y)/CELL_SIZE)*CELL_SIZE;
// make sure the camera is not out of bounds.
verify_camera();
//reset the user's curcor position to the original position the curcor was in when the user started panning the camera
SDL_WarpMouseInWindow(window, mouse_x_when_pan, mouse_y_when_pan);
}
}
else if(event.type == SDL_WINDOWEVENT_RESIZED ){ /// window resize
//float new_cell_size = CELL_SIZE * event.resize.h/((float)SCREEN_HEIGHT); // adjust the pixel size.
float new_cell_size = CELL_SIZE * event.window.data1/((float)SCREEN_HEIGHT); // adjust the pixel size.
if(new_cell_size - ((int)new_cell_size) >= 0.5f) CELL_SIZE = new_cell_size + 1;
else CELL_SIZE = new_cell_size;
//SCREEN_WIDTH = event.resize.w;
//SCREEN_HEIGHT = event.resize.h;
SCREEN_WIDTH = event.window.data1;
SCREEN_HEIGHT = event.window.data2;
verify_grid_and_cell_size(); // make sure the window isn't too big for the cell size
//set_window_size(event.resize.w, event.resize.h);
set_window_size(event.window.data1, event.window.data2);
verify_camera();
}
if( event.type == SDL_KEYDOWN ){ ///keyboard event
switch( event.key.keysym.sym ){
case SDLK_UP: break; //change block type up
case SDLK_DOWN: break; // change block type down
case SDLK_c: reset_cells(); break;//clear the screen
case SDLK_p: print_saturation_data(); break; // prints the cellSat[][] array to stdout. this is for debuggin purposes.
case SDLK_r: randomize_grid(); break; // randomize grid
case SDLK_LEFT: if(paused != 1) {sleepTime /= 2;} break; //speeds up the game
case SDLK_RIGHT: if(paused != 1) {if(sleepTime == 0){sleepTime = 1;} {sleepTime *= 2;} if(sleepTime > 2000) {sleepTime = 2000;}} break; //slows down the game
case SDLK_SPACE: if(paused == 0) {paused = 1;} else if(paused == 1) {paused = 0;} break; //pause the game
case SDLK_ESCAPE: quit = true; // quit with escape
case SDLK_w: gen_world(w_normal,0); break; // generate a world
/*
case SDLK_w: keyw=1; break; // store key state
case SDLK_a: keya=1; break;
case SDLK_s: keys=1; break;
case SDLK_d: keyd=1; break;
*/
case SDLK_LALT:
case SDLK_RALT:
// store the state of the alt key.
alt = 1;
// turn off the cursor
SDL_ShowCursor(SDL_DISABLE);
// store the position of the mouse. this will allow the program to make the cursor stay stationary
mouse_x_when_pan = x;
mouse_y_when_pan = y;
//reset the remainder mouse motion variables for x and y.
remainder_panning_motion_x = 0;
remainder_panning_motion_y = 0;
break;
default: break;
}
}
if( event.type == SDL_KEYUP ){ ///keyboard event
switch( event.key.keysym.sym ){
/*
case SDLK_w: keyw=0; break;//lastPanTime=0; break; // store key state
case SDLK_a: keya=0; break;//lastPanTime=0; break;
case SDLK_s: keys=0; break;//lastPanTime=0; break;
case SDLK_d: keyd=0; break;//lastPanTime=0; break;
*/
case SDLK_LALT:
case SDLK_RALT:
// show the cursor again.
SDL_ShowCursor(SDL_ENABLE);
alt = 0;
break;
default: break;
}
}
} // end while(event)
//no more events to handle at the moment.
/*
//this handles time-controlled panning
if(SDL_GetTicks() - MIN_PAN_INTERVAL > lastPanTime){
if(keyw) pan(D_UP);
if(keya) pan(D_LEFT);
if(keys) pan(D_DOWN);
if(keyd) pan(D_RIGHT);
lastPanTime = SDL_GetTicks();
//#if (DEBUG_GRIDSIM)
// printf("\nlastPanTime = %d\n", lastPanTime);
//#endif
}
*/
//checks if the mouse is held or not
if(mouseStatusLeft == 1 && mouseModifier == 0){
//make sure the mouse isn't inside either of the two GUIs.
if(y >= 50 && x < SCREEN_WIDTH - 200)
setcell(x, y, currentMat);
}
else if(mouseStatusRight == 1 && mouseModifier == 0){
deletecell(x, y, currentMat);
}
//speed of gameplay
countVar++;
if(sleepTime <= 0)
{
sleepTime = 0;
}
//evealuate cells
if(countVar >= sleepTime && paused != 1){
evaluate_grid();
countVar = 0;
}
//updates screen with cells
print_cells();
//displays selection gui
selectionGUI(x, y, mouseStatusLeft);
//displays brushes and misc gui
brushesGUI(x, y, mouseStatusLeft);
// If the user is not panning, then it is fine to show the cursor.
if(!alt){
//displays cursor
cursorDisplay(x, y);
}
//draw_line(screen, 300, 300, x, y, 1, mats[currentMat].color); // test the line drawing function
//updates the screen
//SDL_Flip( screen );
//SDL_RenderPresent( screen );
SDL_UpdateWindowSurface(window);
}// end while(quit == false)
//Free the surface and quit SDL
clean_up();
return 0;
}
void fixformula(int col, int row, int action, int place)
/* Modifies a formula when its column or row designations need to change. */
{
char *colstart, *rowstart, s[6], newformula[MAXINPUT + 1],
*curpos = newformula;
int fcol, frow;
CELLPTR cellptr = cell[col][row];
double value;
strcpy(newformula, cellptr->v.f.formula);
while (*curpos != 0)
{
if (formulastart(&curpos, &fcol, &frow))
{
rowstart = curpos - rowwidth(frow);
colstart = rowstart - ((fcol > 25) ? 2 : 1);
switch (action)
{
case COLADD :
if (fcol < place)
break;
if (fcol == 25)
{
if (strlen(newformula) == MAXINPUT)
{
deletecell(col, row, NOUPDATE);
alloctext(col, row, newformula);
return;
}
movmem(colstart, colstart + 1, strlen(colstart) + 1);
}
colstring(fcol + 1, s);
movmem(s, colstart, strlen(s));
break;
case ROWADD :
if (frow < place)
break;
if (rowwidth(frow + 1) != rowwidth(frow))
{
if (strlen(newformula) == MAXINPUT)
{
deletecell(col, row, NOUPDATE);
alloctext(col, row, newformula);
return;
}
movmem(rowstart, rowstart + 1, strlen(rowstart) + 1);
}
sprintf(s, "%d", frow + 2);
movmem(s, rowstart, strlen(s));
break;
case COLDEL :
if (fcol <= place)
break;
if (fcol == 26)
movmem(colstart + 1, colstart, strlen(colstart) + 1);
colstring(fcol - 1, s);
movmem(s, colstart, strlen(s));
break;
case ROWDEL :
if (frow <= place)
break;
if (rowwidth(frow) != rowwidth(frow - 1))
movmem(rowstart + 1, rowstart, strlen(rowstart) + 1);
sprintf(s, "%d", frow);
movmem(s, rowstart, strlen(s));
break;
} /* switch */
}
else
curpos++;
}
if (strlen(newformula) != strlen(cellptr->v.f.formula))
{
value = cellptr->v.f.fvalue;
deletecell(col, row, NOUPDATE);
allocformula(col, row, newformula, value);
}
else
strcpy(cellptr->v.f.formula, newformula);
} /* fixformula */