build: CMake and public headers

include/ok_types.h

@@ -0,0 +1,46 @@
+#ifndef OK_TYPES_H
+#define OK_TYPES_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#define OK_MAP_W 64
+#define OK_MAP_H 48
+#define OK_MAX_UNITS 256
+
+typedef enum {
+  OK_FACTION_SURVIVORS = 0,
+  OK_FACTION_SCAVENGERS = 1
+} OkFaction;
+
+typedef enum {
+  OK_UNIT_INFANTRY = 0,
+  OK_UNIT_VEHICLE = 1
+} OkUnitKind;
+
+typedef struct {
+  int x, y;
+  OkFaction faction;
+  OkUnitKind kind;
+  int hp;
+  int hp_max;
+  int target; /* unit index or -1 */
+  bool alive;
+} OkUnit;
+
+typedef struct {
+  uint8_t tile[OK_MAP_H][OK_MAP_W]; /* 0 empty, 1 blocked, 2 resource */
+} OkMap;
+
+typedef struct {
+  OkMap map;
+  OkUnit units[OK_MAX_UNITS];
+  int unit_count;
+  int selected;
+  bool running;
+  bool survivors_win;
+  bool scavengers_win;
+  uint32_t tick;
+} OkGame;
+
+#endif