Input test.

src/CMakeLists.txt

@@ -19,6 +19,7 @@ target_include_directories(${DUSK_TARGET_NAME}
 target_sources(${DUSK_TARGET_NAME}
   PRIVATE
     main.c
+    input.c
 )
 
 # Subdirs

src/display/color.h

@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dusk.h"
+
+typedef enum {
+  COLOR_BLACK,
+  COLOR_RED,
+  COLOR_GREEN,
+  COLOR_YELLOW,
+  COLOR_BLUE,
+  COLOR_MAGENTA,
+  COLOR_CYAN,
+  COLOR_WHITE,
+} color_t;
+
+#define COLOR_COUNT (COLOR_WHITE + 1)

src/display/render.c

@@ -5,20 +5,64 @@
  * https://opensource.org/licenses/MIT
  */
 
+#include "assert/assert.h"
 #include "render.h"
 #include "term.h"
+#include "rpg/entity/entity.h"
 
 void renderInit() {
   termInit();
 }
 
 void renderUpdate() {
+  char_t c;
+  color_t color, colorCurrent;
+  entity_t *ent;
+
   termUpdate();
   termClear();
 
+  colorCurrent = COLOR_WHITE;
+  termPushColor(colorCurrent);
+
   for(int32_t y = 0; y < TERM.height; y++) {
     for(int32_t x = 0; x < TERM.width; x++) {
-      char_t c = ' '; // Replace with actual rendering logic
+      color = COLOR_WHITE;
+      c = ' ';
+
+      ent = entityGetAt(x, y);
+      if(ent) {
+        color = COLOR_RED;
+        
+        switch(ent->dir) {
+          case ENTITY_DIR_UP:
+            c = '^';
+            color = COLOR_GREEN;
+            break;
+          case ENTITY_DIR_DOWN:
+            c = 'v';
+            color = COLOR_RED;
+            break;
+          case ENTITY_DIR_LEFT:
+            c = '<';
+            color = COLOR_YELLOW;
+            break;
+          case ENTITY_DIR_RIGHT:
+            c = '>';
+            color = COLOR_BLUE;
+            break;
+          default:
+            assertUnreachable("Invalid entity direction");
+            break;
+        }
+      }
+
+      if(c == ' ') {
+        termPushChar(' ');
+        continue;
+      }
+
+      if(color != colorCurrent) termPushColor((colorCurrent = color));
       termPushChar(c);
     }
   }

src/display/render.h

@@ -8,9 +8,6 @@
 #pragma once
 #include "dusk.h"
 
-extern int32_t renderColumnCount;
-extern int32_t renderRowCount;
-
 /**
  * Init the render system.
  */

src/display/term.c

@@ -5,12 +5,24 @@
  * https://opensource.org/licenses/MIT
  */
 
+#include "assert/assert.h"
 #include "term.h"
 #include "util/memory.h"
 #include <sys/ioctl.h>
 
 term_t TERM;
 
+const char_t* TERM_COLORS[COLOR_COUNT] = {
+  [COLOR_BLACK]   = "\033[30m",
+  [COLOR_RED]     = "\033[31m",
+  [COLOR_GREEN]   = "\033[32m",
+  [COLOR_YELLOW]  = "\033[33m",
+  [COLOR_BLUE]    = "\033[34m",
+  [COLOR_MAGENTA] = "\033[35m",
+  [COLOR_CYAN]    = "\033[36m",
+  [COLOR_WHITE]   = "\033[37m"
+};
+
 void termInit() {
   memoryZero(&TERM, sizeof(term_t));
 
@@ -33,6 +45,11 @@ void termClear() {
   printf("\033[2J\033[H");
 }
 
+void termPushColor(const color_t color) {
+  assertTrue(color < COLOR_COUNT, "Invalid color index");
+  printf("%s", TERM_COLORS[color]);
+}
+
 void termPushChar(const char_t c) {
   putchar(c);
 }

src/display/term.h

@@ -7,6 +7,7 @@
 
 #pragma once
 #include "dusk.h"
+#include "display/color.h"
 
 typedef struct {
   int32_t width;
@@ -15,6 +16,8 @@ typedef struct {
 
 extern term_t TERM;
 
+extern const char_t* TERM_COLORS[COLOR_COUNT];
+
 /**
  * Initialize the terminal system.
  */
@@ -30,6 +33,8 @@ void termUpdate();
  */
 void termClear();
 
+void termPushColor(const color_t color);
+
 /**
  * Push a character to the terminal output buffer.
  * 

src/input.c

@@ -8,14 +8,96 @@
 #include "input.h"
 #include "util/memory.h"
 #include "assert/assert.h"
-
-#define INPUT_BIND_MAP_COUNT (sizeof(INPUT_BIND_MAPS) / sizeof(inputbindmap_t))
+#include <fcntl.h>
 
 input_t INPUT;
 
-void inputInit(void) {
-  memoryZero(&INPUT, sizeof(input_t));
+inputmap_t INPUT_MAP[] = {
+  {"w", INPUT_UP},
+  {"s", INPUT_DOWN},
+  {"a", INPUT_LEFT},
+  {"d", INPUT_RIGHT},
+  {" ", INPUT_ACTION},
+  {"e", INPUT_ACTION},
+  {"\n", INPUT_ACTION}, // Enter key
+  {"\x1B", INPUT_CANCEL}, // Escape key
+  {"\033[A", INPUT_UP},    // Up arrow
+  {"\033[B", INPUT_DOWN},  // Down arrow
+  {"\033[C", INPUT_RIGHT}, // Right arrow
+  {"\033[D", INPUT_LEFT},  // Left arrow
+  { 0 }
+};
+
+void inputEnableRawMode() {
+  if (INPUT.isRawMode) return;
+  tcgetattr(STDIN_FILENO, &INPUT.origin);
+  struct termios raw = INPUT.origin;
+  raw.c_lflag &= ~(ICANON | ECHO);
+  tcsetattr(STDIN_FILENO, TCSANOW, &raw);
+  INPUT.isRawMode = 1;
 }
 
-void inputUpdate(void) {
+void inputDisableRawMode() {
+  if(!INPUT.isRawMode) return;
+  tcsetattr(STDIN_FILENO, TCSANOW, &INPUT.origin);
+  INPUT.isRawMode = 0;
+}
+
+void inputSetNonBlocking() {
+  int flags = fcntl(STDIN_FILENO, F_GETFL, 0);
+  fcntl(STDIN_FILENO, F_SETFL, flags | O_NONBLOCK);
+}
+
+void inputInit() {
+  memoryZero(&INPUT, sizeof(input_t));
+
+  inputEnableRawMode();
+  inputSetNonBlocking();
+}
+
+void inputUpdate() {
+  char_t buffer[INPUT_BUFFER_SIZE];
+  ssize_t n = read(STDIN_FILENO, buffer, sizeof(buffer) - 1);
+
+  if(n < 0) {
+    INPUT.previous = INPUT.current;
+    INPUT.current = 0;
+    return;
+  }
+  
+  assertTrue(n < INPUT_BUFFER_SIZE, "Input buffer overflow");
+
+  uint8_t val = 0;
+  inputmap_t *map;
+  uint8_t len;
+  char_t *c;
+  for(uint8_t i = 0; i < n; i++) {
+    map = INPUT_MAP;
+
+    do {
+      len = strlen(map->key);
+
+      if(i + len > n) {
+        map++;
+        continue;
+      }
+
+      c = buffer + i;
+      if(memoryCompare(c, map->key, len) != 0) {
+        map++;
+        continue;
+      }
+
+      // Button was pressed
+      val |= map->value;
+      i += len - 1;
+    } while(map->key);
+  }
+  
+  INPUT.previous = INPUT.current;
+  INPUT.current = val;
+}
+
+void inputDispose() {
+  inputDisableRawMode();
 }

src/input.h

@@ -7,19 +7,39 @@
 
 #pragma once
 #include "dusk.h"
+#include <termios.h>
+
+#define INPUT_UP (1 << 0)
+#define INPUT_DOWN (1 << 1)
+#define INPUT_LEFT (1 << 2)
+#define INPUT_RIGHT (1 << 3)
+#define INPUT_ACTION (1 << 4)
+#define INPUT_CANCEL (1 << 5)
+
+#define INPUT_BUFFER_SIZE 128
 
 typedef struct {
-  char_t input;
+  uint8_t current;
+  uint8_t previous;
+  bool_t isRawMode;
+  struct termios origin;
 } input_t;
 
 extern input_t INPUT;
 
+typedef struct {
+  char_t *key;
+  uint8_t value;
+} inputmap_t;
+
+extern inputmap_t INPUT_MAP[];
+
 /**
  * Initializes the input system.
  */
-void inputInit(void);
+void inputInit();
 
 /**
  * Updates the input system.
  */
-void inputUpdate(void);
+void inputUpdate();

src/main.c

@@ -5,14 +5,34 @@
  * https://opensource.org/licenses/MIT
  */
 
+#include "input.h"
 #include "util/random.h"
 #include "display/render.h"
 
+#include "rpg/entity/entity.h"
+
 int32_t main(const int32_t argc, const char **argv) {
+  inputInit();
   randomInit();
   renderInit();
 
+  entity_t *ent;
+
+  ent = &ENTITIES[0];
+  entityInit(ent, ENTITY_TYPE_PLAYER);
+
   while(1) {
+    inputUpdate();
+
+    ent = ENTITIES;
+    do {
+      if(ent->type == ENTITY_TYPE_NULL) {
+        ent++;
+        continue;
+      }
+      entityUpdate(ent++);
+    } while(ent < (ENTITIES + ENTITY_COUNT));
+
     renderUpdate();
     usleep(100 * 1000); // Sleep for 16 milliseconds (60 FPS)
   }

src/rpg/CMakeLists.txt

@@ -11,4 +11,5 @@ target_sources(${DUSK_TARGET_NAME}
 # Subdirs
 add_subdirectory(entity)
 add_subdirectory(item)
-add_subdirectory(quest)
+add_subdirectory(quest)
+add_subdirectory(world)

src/rpg/entity/entity.c

@@ -12,12 +12,11 @@
 entity_t ENTITIES[ENTITY_COUNT];
 
 entitycallbacks_t ENTITY_CALLBACKS[ENTITY_TYPE_COUNT] = {
-    [ENTITY_TYPE_NULL] = {
-      .init = NULL
-    },
+    [ENTITY_TYPE_NULL] = { 0 },
     
     [ENTITY_TYPE_PLAYER] = {
-      .init = playerInit
+      .init = playerInit,
+      .update = playerUpdate
     },
 };
 
@@ -31,4 +30,23 @@ void entityInit(entity_t *entity, const entitytype_t type) {
   memoryZero(entity, sizeof(entity_t));
   entity->type = type;
   ENTITY_CALLBACKS[type].init(entity);
+}
+
+void entityUpdate(entity_t *entity) {
+  assertNotNull(entity, "Entity cannot be NULL");
+  assertNotNull(
+    ENTITY_CALLBACKS[entity->type].update,
+    "Entity type has no update"
+  );
+
+  ENTITY_CALLBACKS[entity->type].update(entity);
+}
+
+entity_t * entityGetAt(const uint8_t x, const uint8_t y) {
+  entity_t *e = ENTITIES;
+  do {
+    if(e->type && e->x == x && e->y == y) return e;
+    e++;
+  } while(e < (ENTITIES + ENTITY_COUNT));
+  return NULL;
 }

src/rpg/entity/entity.h

@@ -43,6 +43,7 @@ extern entity_t ENTITIES[ENTITY_COUNT];
 
 typedef struct {
   void (*init)(entity_t *entity);
+  void (*update)(entity_t *entity);
 } entitycallbacks_t;
 extern entitycallbacks_t ENTITY_CALLBACKS[ENTITY_TYPE_COUNT];
 
@@ -52,4 +53,20 @@ extern entitycallbacks_t ENTITY_CALLBACKS[ENTITY_TYPE_COUNT];
  * @param entity Pointer to the entity to initialize.
  * @param type The type of the entity to initialize.
  */
-void entityInit(entity_t *entity, const entitytype_t type);
+void entityInit(entity_t *entity, const entitytype_t type);
+
+/**
+ * Updates the entity's state based on its type.
+ * 
+ * @param entity Pointer to the entity to update.
+ */
+void entityUpdate(entity_t *entity);
+
+/**
+ * Resets the entity at a given position.
+ * 
+ * @param x The x-coordinate of the entity.
+ * @param y The y-coordinate of the entity.
+ * @return Pointer to the entity at the specified position, or NULL.
+ */
+entity_t * entityGetAt(const uint8_t x, const uint8_t y);

src/rpg/entity/player.c

@@ -11,4 +11,9 @@
 void playerInit(entity_t *player) {
   assertNotNull(player, "Player entity is NULL");
   assertTrue(player->type == ENTITY_TYPE_PLAYER, "Entity is not a player");
+}
+
+void playerUpdate(entity_t *entity) {
+  assertNotNull(entity, "Entity is NULL");
+  assertTrue(entity->type == ENTITY_TYPE_PLAYER, "Entity is not a player");
 }

src/rpg/entity/player.h

@@ -19,4 +19,11 @@ typedef struct {
  * 
  * @param ent Pointer to the player entity to initialize.
  */
-void playerInit(entity_t *ent);
+void playerInit(entity_t *ent);
+
+/**
+ * Updates a player entity.
+ * 
+ * @param ent Entity to update.
+ */
+void playerUpdate(entity_t *ent);

src/rpg/world/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright (c) 2025 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DUSK_TARGET_NAME}
+  PRIVATE
+    map.c
+)

src/rpg/world/map.h

@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dusk.h"
+
+typedef struct {
+  uint8_t width;
+  uint8_t height;
+} map_t;
+
+extern map_t MAP;