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Finished adding comments to the dialogs code.

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mibi88 2023-07-20 13:11:36 +02:00
parent 6acb9ab93b
commit ea9244ca61
2 changed files with 108 additions and 1 deletions
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44
src/dialogs.c
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@ -161,8 +161,9 @@ int showtext_opt(Game *game, bopti_image_t *face, char *text,
}
if(call_before_end) return_int = call_before_end(game, i);
if(end_anim){
/* Run another little fancy animation. */
/* Run another little fancy animation if we should. */
for(i=BOX_HEIGHT;i>0;i--){
/* It is the same as the start animation. */
draw(game);
drect(0, 0, DWIDTH, i*PXSIZE, C_WHITE);
drect(0, i*PXSIZE, DWIDTH, (i+1)*PXSIZE, C_BLACK);
@ -180,6 +181,8 @@ int showtext_opt(Game *game, bopti_image_t *face, char *text,
void showtext_dialog(Game *game, bopti_image_t *face, char *text,
bool dialog_start, bool dialog_end) {
/* Run showtext_opt with some default values. It makes it easier to use in
* simple dialogs. */
showtext_opt(game, face, text, NULL, dialog_start, dialog_end, NULL, 100,
true, 0, true);
}
@ -187,11 +190,15 @@ void showtext_dialog(Game *game, bopti_image_t *face, char *text,
#define CHOICE_BOX_HEIGHT 10
#define CHOICE_BOX_PADDING_TOP 3
/* Some variables and pointers used to get some arguments passed in
* showtext_dialog_ask in _choice_call_before_end. */
char *_choices, *_text;
int _choices_amount, _default_choice;
bopti_image_t *_face;
unsigned int _i;
/* Get where I started drawing a dialog page, to be able to redraw the last page
* for the end animation in _choice_call_before_end. */
void _choice_screen_call(Game *game, unsigned int i) {
_i = i;
}
@ -200,19 +207,37 @@ int _choice_call_before_end(Game *game, unsigned int org_i) {
int i, key;
/* Make a little animation because we looove little animations ;) */
for(i=0;i<DWIDTH/8+1;i++){
/* Fill the interaction box with white */
drect(0, (BOX_HEIGHT+1)*PXSIZE+1, i*(DWIDTH/8),
(BOX_HEIGHT+CHOICE_BOX_HEIGHT)*PXSIZE, C_WHITE);
/* Draw a thick border on the right of the box. */
drect(i*(DWIDTH/8), BOX_HEIGHT*PXSIZE, i*(DWIDTH/8)+PXSIZE-1,
(BOX_HEIGHT+CHOICE_BOX_HEIGHT+1)*PXSIZE, C_BLACK);
/* Draw a thick border on the bottom of the box. */
drect(0, (BOX_HEIGHT+CHOICE_BOX_HEIGHT)*PXSIZE, i*(DWIDTH/8),
(BOX_HEIGHT+CHOICE_BOX_HEIGHT+1)*PXSIZE, C_BLACK);
/* Show everyting on screen. */
blit();
/* Wait some ms so that the animation isn't too fast. */
while(game->frame_duration < 20) sleep();
game->frame_duration = 0;
}
/* Calculate the maximal size of a choice. */
const int choice_size = DWIDTH/_choices_amount;
/* arrow_width: The space taken by the arrow that shows the selected item.
* arrow_height: The height of the arrow used to show which item is choosen.
* Used to calculate the size of the rectangle used to remove
* him.
* selected: The selected item.
* pos: The position of the item we're drawing in the choice
* string. The choice string is not really a string, it is
* made of multiple '\0' terminated strings, that are in
* memory one after the other.
*/
int arrow_width, arrow_height, selected = _default_choice, pos = 0;
/* Calculate the size of the arrow. */
dsize(">", &FONT_USED, &arrow_width, &arrow_height);
/* Add the character spacing of the font to it. */
arrow_width += FONT_USED.char_spacing;
do{
/* Display the diffrent choices. */
@ -227,6 +252,8 @@ int _choice_call_before_end(Game *game, unsigned int org_i) {
}
blit();
key = getkey().key;
/* If the player pressed the left arrow key and has not already selected
* the first possible choice. */
if(key == KEY_LEFT && selected > 0){
/* Remove the old arrow. */
drect(selected*choice_size+PXSIZE,
@ -234,8 +261,12 @@ int _choice_call_before_end(Game *game, unsigned int org_i) {
selected*choice_size+PXSIZE+arrow_width,
(BOX_HEIGHT+CHOICE_BOX_PADDING_TOP)*PXSIZE+arrow_height,
C_WHITE);
/* Move the selection arrow and update the selected item. */
selected--;
}
/* If the player pressed the right arrow key and has not already
* selected the last possible choice. */
else if(key == KEY_RIGHT && selected < _choices_amount-1){
/* Remove the old arrow. */
drect(selected*choice_size+PXSIZE,
@ -243,11 +274,16 @@ int _choice_call_before_end(Game *game, unsigned int org_i) {
selected*choice_size+PXSIZE+arrow_width,
(BOX_HEIGHT+CHOICE_BOX_PADDING_TOP)*PXSIZE+arrow_height,
C_WHITE);
/* Move the selection arrow and update the selected item. */
selected++;
}
/* If the user has not validated his choice by pressing EXE, we loop one
* more time. */
}while(key != KEY_EXE);
/* Make a little animation because we looove little animations ;) */
for(i=DWIDTH/8+1;i>0;i--){
/* I'm drawing the same box as on the start animation */
draw(game);
showtext_opt(game, _face, _text, NULL, false, false, NULL, 0, false,
_i, false);
@ -261,17 +297,23 @@ int _choice_call_before_end(Game *game, unsigned int org_i) {
while(game->frame_duration < 20) sleep();
game->frame_duration = 0;
}
/* Return the selected item because he'll also be returned by showtext_opt.
*/
return selected;
}
int showtext_dialog_ask(Game *game, bopti_image_t *face, char *text, bool start,
bool end, char *choices, int choices_amount,
int default_choice) {
/* Put some arguments in global pointers and variables to make them
* accessible by _choice_call_before_end. */
_choices = choices;
_choices_amount = choices_amount;
_default_choice = default_choice;
_face = face;
_text = text;
/* Run showtext_opt and return his return value (the return value of
*_choice_call_before_end) */
return showtext_opt(game, face, text, _choice_call_before_end, start, end,
_choice_screen_call, 100, true, 0, true);
}

65
src/dialogs.h
View file

@ -9,6 +9,34 @@
#define F_WIDTH (32*PXSIZE)
#define F_HEIGHT (32*PXSIZE)
/* showtext_opt()
*
* Show some text in a box with word wrap for dialogs.
*
* game: The game struct of the current game.
* face: A bopti_image_t of the face of the person who's saying this
* text. This bopti_image_t should have a width of F_WIDTH and
* a height of F_HEIGHT.
* text: The text to display.
* call_before_end: A function called when the end of the text was displayed and
* the user pressed EXE (or wait_continue was true). His
* parameter game is the game struct passed to showtext_opt,
* and i is the current position in text.
* start_anim: A boolean, that, if he's true, makes that a little animation
* is shown at the start of showtext_opt.
* end_anim: A boolean, that, if he's true, makes that a little animation
* is shown at the end of showtext_opt.
* for_each_screen: A function called before a page of the dialog gets drawn.
* His parameter game is the game struct passed to
* showtext_opt, and i is the current position in text.
* line_duration: How many ms showtext_opt will wait after a line has been
* drawn.
* update_screen: When he's true showtext_opt will update the screen after
* drawing a line etc.
* start_i: At which position I start displaying the text.
* wait_continue: If I should wait that EXE is pressed after drawing a page.
*/
int showtext_opt(Game *game, bopti_image_t *face, char *text,
int call_before_end(Game *game, unsigned int i),
bool start_anim,
@ -17,9 +45,46 @@ int showtext_opt(Game *game, bopti_image_t *face, char *text,
int line_duration, bool update_screen, unsigned int start_i,
bool wait_continue);
/* showtext_dialog()
*
* Calls showtext_opt with default parameters.
*
* game: The game struct of the current game.
* face: A bopti_image_t of the face of the person who's saying this
* text. This bopti_image_t should have a width of F_WIDTH and a
* height of F_HEIGHT.
* text: The text to display.
* dialog_start: A boolean, that, if he's true, makes that a little animation is
* shown at the start of showtext_opt.
* dialog_end: A boolean, that, if he's true, makes that a little animation is
* shown at the end of showtext_opt.
*/
void showtext_dialog(Game *game, bopti_image_t *face, char *text,
bool dialog_start, bool dialog_end);
/* showtext_dialog_ask()
*
* Like showtext_dialog, but lets the user choose between multiple possible
* choices after displaying the text.
*
* game: The game struct of the current game.
* face: A bopti_image_t of the face of the person who's saying this
* text. This bopti_image_t should have a width of F_WIDTH and a
* height of F_HEIGHT.
* text: The text to display.
* start: A boolean, that, if he's true, makes that a little animation
* is shown at the start of showtext_opt.
* end: A boolean, that, if he's true, makes that a little animation
* is shown at the end of showtext_opt.
* choices: A pointer to null-terminated strings that are one after the
* other in memory. They should be one null-terminated string
* for each possible choice.
* choice_amount: The amount of possible choices in the choices zero-terminated
* strings.
* default_choice: The choice choosen by default when the dialog just opened.
*/
int showtext_dialog_ask(Game *game, bopti_image_t *face, char *text, bool start,
bool end, char *choices, int choices_amount,
int default_choice);