textbox renders.

src/dusk/entity/npc.c

@@ -19,7 +19,6 @@ void npcLoad(entity_t *entity, const entity_t *source) {
 }
 
 void npcUpdate(entity_t *entity) {
-  
 }
 
 void npcInteract(entity_t *player, entity_t *self) {

src/dusksdl2/display/ui/CMakeLists.txt

@@ -10,4 +10,5 @@ target_sources(${DUSK_TARGET_NAME}
     renderfps.c
     rendertext.c
     renderui.c
+    rendertextbox.c
 )

src/dusksdl2/display/ui/rendertextbox.c

@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "rendertextbox.h"
+#include "ui/uitextbox.h"
+#include "display/ui/rendertext.h"
+#include "display/spritebatch/spritebatch.h"
+#include "assert/assert.h"
+
+void renderTextboxDraw(void) {
+  if(!UI_TEXTBOX.visible) return;
+
+  // Background
+  spriteBatchPush(
+    NULL,
+    0, RENDER_HEIGHT - UI_TEXTBOX_HEIGHT,
+    RENDER_WIDTH, RENDER_HEIGHT,
+    0x00, 0x00, 0x00, 0xFF,
+    0.0f, 0.0f, 1.0f, 1.0f
+  );
+
+  uint32_t x = 0;
+  uint32_t y = RENDER_HEIGHT - UI_TEXTBOX_HEIGHT;
+
+  if(UI_TEXTBOX.charsRevealed > 0) {
+    uint8_t charsRendered = 0;
+
+    // For each line
+    for(uint8_t i = 0; i < UI_TEXTBOX_LINES_PER_PAGE; i++) {
+      // Get count of chars in the line
+      uint8_t lineLength = UI_TEXTBOX.lineLengths[
+        i + (UI_TEXTBOX.page * UI_TEXTBOX_LINES_PER_PAGE)
+      ];
+      if(lineLength == 0) continue;
+
+      // Determine how many chars left to render
+      uint8_t lineChars = UI_TEXTBOX.charsRevealed - charsRendered;
+      
+      // Don't render more than in line
+      if(lineChars > lineLength) lineChars = lineLength;
+      assertTrue(lineChars > 0, "Line chars must be greater than 0");
+
+      // Update how many rendered
+      charsRendered += lineChars;
+
+      for(uint8_t j = 0; j < lineChars; j++) {
+        renderTextDrawChar(
+          x + UI_TEXTBOX_PADDING_X + UI_TEXTBOX_BORDER_WIDTH + (
+            j * FONT_TILE_WIDTH
+          ),
+          y + UI_TEXTBOX_PADDING_Y + UI_TEXTBOX_BORDER_HEIGHT + (
+            i * FONT_TILE_HEIGHT
+          ),
+          UI_TEXTBOX.text[
+            (i * UI_TEXTBOX_CHARS_PER_LINE) + j +
+            (UI_TEXTBOX.page * UI_TEXTBOX_CHARS_PER_PAGE)
+          ],
+          0xFF, 0xFF, 0xFF
+        );
+      }
+
+      // Check if we're done rendering text
+      if(UI_TEXTBOX.charsRevealed - charsRendered == 0) break;
+    }
+  }
+}

src/dusksdl2/display/ui/rendertextbox.h

@@ -5,4 +5,6 @@
  * https://opensource.org/licenses/MIT
  */
 
-#pragma once
+#pragma once
+
+void renderTextboxDraw(void);

src/dusksdl2/display/ui/renderui.c

@@ -9,6 +9,7 @@
 #include "display/ui/rendertext.h"
 #include "display/ui/renderconsole.h"
 #include "display/ui/renderfps.h"
+#include "display/ui/rendertextbox.h"
 #include "display/spritebatch/spritebatch.h"
 #include "display/camera/camera.h"
 
@@ -18,6 +19,10 @@ renderuicallback_t RENDER_UI_CALLBACKS[] = {
     .dispose = renderTextDispose
   },
 
+  {
+    .draw = renderTextboxDraw,
+  },
+
   {
     .draw = renderConsoleDraw,
   },
@@ -46,6 +51,7 @@ void renderUIDraw(void) {
     RENDER_UI_CALLBACKS[i].draw();
   }
 
+  spriteBatchFlush();
   cameraUIPop();
 }
 

src/dusksdl2/dusksdl2input.h

@@ -52,6 +52,7 @@
     { SDL_SCANCODE_DOWN, INPUT_BIND_DOWN },
     { SDL_SCANCODE_RETURN, INPUT_BIND_ACTION },
     { SDL_SCANCODE_SPACE, INPUT_BIND_ACTION },
+    { SDL_SCANCODE_E, INPUT_BIND_ACTION },
     { SDL_SCANCODE_ESCAPE, INPUT_BIND_CANCEL },
     { SDL_SCANCODE_BACKSPACE, INPUT_BIND_CANCEL },
     { SDL_SCANCODE_TAB, INPUT_BIND_CONSOLE },