Add input logic for building

game/game_state.h

@@ -4,12 +4,34 @@
 #include <breeze.h>
 #include <flecs.h>
 
-typedef enum InputState {
+typedef enum InputType {
     INPUT_NONE,
-    INPUT_PLACING,
-    INPUT_DRAGGING,
+    INPUT_BUILDING,
     INPUT_SELECTED_UNITS,
     INPUT_SELECTED_OBJECT,
+    INPUT_SELECTED_BUILDING,
+} InputType;
+
+typedef struct InputState {
+    InputType state;
+    // Input mapping
+    MouseButton LMB;
+    MouseButton RMB;
+    MouseButton MMB;
+    KeyboardKey ESC;
+    f32 DRAG_LIMIT;
+    // Common
+    Vector2 mouseDown;
+    Vector2 mouseDownWorld;
+    f32 mouseDownElapsed;
+    // INPUT_BUILDING
+    int building;
+    bool buildingCanPlace;
+    TilePosition buildingPos;
+    TileSize buildingSize;
+    // SELECTED_UNITS
+    // SELECTED_OBJECTS
+    // SELECTED_BUILDING
 } InputState;
 
 typedef struct Game {
@@ -21,15 +43,7 @@ typedef struct Game {
     BzSpatialGrid *entityGrid;
     f32 frameDuration;
     ecs_entity_t entity;
-    struct {
-        InputState state;
-        int building;
-        bool buildingCanPlace;
-        TilePosition buildingPos;
-        TileSize buildingSize;
-        Vector2 mouseDown;
-        f32 mouseDownElapsed;
-    } input;
+    InputState input;
     struct {
         i64 wood;
         i64 iron;