Finished basic question box

src/conversation/questionbox.c

@@ -11,26 +11,77 @@ uint8_t QUESTION_BOX_OPTION_COUNT;
 uint8_t QUESTION_BOX_OPTION_CURRENT;
 
 void questionBoxSetOptions(char *title, char **options, uint8_t count) {
-  uint8_t i;
+  uint8_t i, j;
   char buffer[TEXTBOX_CHARS_MAX + 1];
+  char spaces[QUESTION_BOX_QUESTION_SPACES];
   sprintf(buffer, title);
 
   i = 0;
   QUESTION_BOX_OPTION_CURRENT = 0;
   QUESTION_BOX_OPTION_COUNT = count;
 
+  for(i = 0; i < QUESTION_BOX_QUESTION_SPACES; i++) {
+    spaces[i] = ' ';
+  }
+
   // For each row...
   for(i = 0; i < count; i++) {
     if((i & 1) == 0) {
+      j = strlen(options[i]);
       sprintf(buffer, "%s\n %s", buffer, options[i]);
     } else {
-      sprintf(buffer, "%s %s", buffer, options[i]);
+      j = QUESTION_BOX_QUESTION_SPACES - j;
+      spaces[j + 1] = '\0';
+      sprintf(buffer, "%s%s%s", buffer, spaces, options[i]);
+      spaces[j + 1] = ' ';
     }
   }
 
   conversationTextboxSetText(buffer);
+
+  // Modify the textbox state
+  TEXTBOX_STATE |= TEXTBOX_STATE_IS_QUESTION;
+
+  // Repurpose old array and draw arrow
+  spaces[0] = QUESTION_BOX_CURSOR - TEXTBOX_FONT_START + FONT_DATA_POSITION;
+  set_bkg_tiles(0x01, TEXTBOX_WIN_Y + 0x02, 1, 1, spaces);
 }
 
 inline void questionBoxUpdate() {
-  
+  uint8_t tiles[1];
+  uint8_t i;
+
+  if((TEXTBOX_STATE & (TEXTBOX_STATE_VISIBLE|TEXTBOX_STATE_IS_QUESTION)) == 0) return;
+
+  // Detect input
+  if(INPUT_PRESSED & J_RIGHT) {
+    QUESTION_BOX_OPTION_CURRENT++;
+  } else if(INPUT_PRESSED & J_LEFT) {
+    QUESTION_BOX_OPTION_CURRENT--;
+  } else if(INPUT_PRESSED & J_UP) {
+    QUESTION_BOX_OPTION_CURRENT -= 2;
+  } else if(INPUT_PRESSED & J_DOWN) {
+    QUESTION_BOX_OPTION_CURRENT += 2;
+  } else {
+    return;
+  }
+
+  // Bound.
+  QUESTION_BOX_OPTION_CURRENT = QUESTION_BOX_OPTION_CURRENT % QUESTION_BOX_OPTION_COUNT;
+
+  // Decide where to render arrow
+  for(i = 0; i < QUESTION_BOX_OPTION_COUNT; i++) {
+    if(i == QUESTION_BOX_OPTION_CURRENT) {
+      tiles[0] = QUESTION_BOX_CURSOR - TEXTBOX_FONT_START + FONT_DATA_POSITION;
+    } else {
+      tiles[0] = ' ' - TEXTBOX_FONT_START + FONT_DATA_POSITION;
+    }
+    set_bkg_tiles(
+      0x01 + ((i % 0x02) * QUESTION_BOX_QUESTION_SPACES),
+      TEXTBOX_WIN_Y + 0x02 + (i / 0x02),
+      1, 1,
+      tiles
+    );
+  }
+
 }

src/conversation/questionbox.h

@@ -15,6 +15,8 @@
 #include "textbox.h"
 
 #define QUESTION_BOX_OPTIONS_MAX ((TEXTBOX_CHAR_ROWS-1)*2)
+#define QUESTION_BOX_CURSOR '>'
+#define QUESTION_BOX_QUESTION_SPACES 9
 
 extern uint8_t QUESTION_BOX_OPTION_COUNT;
 extern uint8_t QUESTION_BOX_OPTION_CURRENT;

src/conversation/textbox.c

@@ -57,7 +57,7 @@ void conversationTextboxSetText(char *text) {
       
       // IF that number is less than the remaining chars on the current row,
       // then treat this space like a newline.
-      if(k >= (rowStart + TEXTBOX_CHARS_PER_ROW - 1)) {
+      if(k >= (rowStart + TEXTBOX_CHARS_PER_ROW + 1)) {
         stateFlags |= 1 << 0;
       }
     } else if(c == '\n') {
@@ -70,7 +70,7 @@ void conversationTextboxSetText(char *text) {
       i++;
       rowStart = i;// Update the row start (Should this be i+1?)
       //TODO: can I optimize the next line by using rowStart somehow?
-      j = ((j / TEXTBOX_CHARS_PER_ROW) + 1) * TEXTBOX_CHARS_PER_ROW;// Update destination character position.
+      j = ((j / TEXTBOX_CHARS_PER_ROW)+1) * TEXTBOX_CHARS_PER_ROW;// Update destination character position.
       TEXTBOX_ROW_COUNT++;
       continue;
     }
@@ -109,7 +109,7 @@ inline void conversationTextboxUpdate() {
   // Have we finished scrolling?
   if(TEXTBOX_STATE & TEXTBOX_STATE_SCROLLED) {
     // Is the user trying to go to the next line?
-    if(INPUT_STATE & J_A) {
+    if(INPUT_PRESSED & J_A) {
       // First, lets figure out if there's any more text to reveal or not.
       if((TEXTBOX_ROW_COUNT - TEXTBOX_ROW_CURRENT) < TEXTBOX_TILES_ROWS) {
         TEXTBOX_STATE &= ~TEXTBOX_STATE_VISIBLE;

src/conversation/textbox.h

@@ -16,6 +16,7 @@
 
 #define TEXTBOX_STATE_VISIBLE (1 << 0)
 #define TEXTBOX_STATE_SCROLLED (1 << 1)
+#define TEXTBOX_STATE_IS_QUESTION (1 << 2)
 
 #define TEXTBOX_WIDTH_IN_TILES 20
 #define TEXTBOX_HEIGHT_IN_TILES 5

src/input.c

@@ -8,3 +8,5 @@
 #include "input.h"
 
 uint8_t INPUT_STATE = 0x00;
+uint8_t INPUT_PRESSED = 0x00;
+uint8_t INPUT_LAST = 0x00;

src/input.h

@@ -8,4 +8,6 @@
 #pragma once
 #include "libs.h"
 
-extern uint8_t INPUT_STATE;
+extern uint8_t INPUT_STATE;
+extern uint8_t INPUT_PRESSED;
+extern uint8_t INPUT_LAST;

src/main.c

@@ -159,7 +159,6 @@ inline void mainDebugDraw() {
 
 void main() {
   int16_t j;
-  
   uint8_t filled[GB_BACKGROUND_COLUMNS*GB_BACKGROUND_ROWS];
 
   // Set up the GAMEBOY's registers.
@@ -171,15 +170,12 @@ void main() {
 
   // Init the random seed
   initarand(DIV_REG);
-  
-  // Prepare time and input
-  INPUT_STATE = joypad();
 
   // Init things
   commonTilesInit();
   conversationTextboxInit();
-  // conversationQueueInit();
-  // pokerInit();
+  conversationQueueInit();
+  pokerInit();
 
   // Fill screen white
   for(j = 0; j < GB_BACKGROUND_COLUMNS * GB_BACKGROUND_ROWS; j++) filled[j] = COMMON_TILE_3;
@@ -187,24 +183,23 @@ void main() {
   SCX_REG = 0x00;
   SCY_REG = 0x00;
 
-  // Alright begin the game logic here.
-  char *options[2] = {
-    "Yes", "No"
-  };
-  questionBoxSetOptions("Title", options, 0x02);
-
   // Now turn the screen on
   DISPLAY_ON;
   enable_interrupts();
   wait_vbl_done();
 
+  // Begin game
+  conversationQueueNext();
+
   // Begin the loop
   while(1) {
     // Perform non-graphical code updates
     wait_vbl_done();
 
     // Update the input state
+    INPUT_LAST = INPUT_STATE;
     INPUT_STATE = joypad();
+    INPUT_PRESSED = (~INPUT_LAST) & INPUT_STATE;
 
     // Tick time.
     timeUpdate();
@@ -212,15 +207,12 @@ void main() {
     // Update conversation pause effect
     conversationPauseUpdate();
 
-    // Update question box.
+    // Update question box and textbox
     questionBoxUpdate();
-
-    // Update conversation textbox
     conversationTextboxUpdate();
 
-
     // Update conversation fade effect
     conversationFadeUpdate();
-    // mainDebugDraw();
+    mainDebugDraw();
   }
 }