speed control of player and the ground

semestralka1/src/game/state.cpp

@@ -1,6 +1,7 @@
 // src/game/state.cpp
 #include "state.h"
 #include "../render/player.h"
+#include "../timing/speed_controller.h"
 
 void WalkingState::update() {
   // stop crawling after duration
@@ -18,8 +19,8 @@ void WalkingState::start_crawl() {
 }
 
 // TODO THIS NEEDS REDESIGN ACCORDING TO SPEED
-void WalkingState::toggle_walk_frame() {
-  if ((run_index += 3) >= 7) run_index = 0;
+void WalkingState::toggle_walk_frame(int step) {
+  run_index = (run_index + step) % 7;
 }
 // void RunningState::toggle_run_frame() {
 //   if (++run_index >= 7) run_index = 0;

semestralka1/src/game/state.h

@@ -23,7 +23,7 @@ private:
 public:
   void update();
   void start_crawl();
-  void toggle_walk_frame();
+  void toggle_walk_frame(int step);
 
   FrameSelection get_frame_selection() const;
   PlayerState get_state() const { return current_state; }

semestralka1/src/main.cpp

@@ -22,5 +22,5 @@ int main(void) {
     printf("Baud: %d, Format: 8-N-1\r\n", BAUD_RATE);
 
     // Just call into render feature
-    render_loop(6);
+    render_loop(1);
 }

semestralka1/src/render/loop.cpp

@@ -9,6 +9,7 @@
 #include "../game/animation.h"
 #include "../hardware/uart.h"
 #include "../render/player.h"
+#include "../timing/speed_controller.h"
 
 extern BufferedSerial serial_port;
 extern DigitalOut led;
@@ -23,13 +24,19 @@ void render_loop(int speed) {
   WalkingState player_state;
   AnimationController animation;
   UartReader uart(serial_port);
+  SpeedController timing;
+  timing.set_ground_speed(speed);
 
   CharacterPosition pos = {PLAYER_X, PLAYER_Y};
 
   const char *bg_file = "background_dark_inverted.txt";
   bool need_redraw = false;
 
+  int tick_counter = 0;
+  int player_speed = 3;
+
   while (true) {
+    tick_counter++;
     need_redraw = false;
     UartEvent uart_event = uart.poll();
 
@@ -57,8 +64,11 @@ void render_loop(int speed) {
       CharacterPosition draw_pos = get_aligned_frame_position(pos, frame.movement, frame.frame_index);
       draw_character(draw_pos.x, draw_pos.y, frame.movement, frame.frame_index);
 
+
       if (player_state.get_state() != PlayerState::Crawl) {
-	player_state.toggle_walk_frame();
+        int step = timing.frame_advance_for(player_speed, tick_counter);
+        if (step > 0)
+          player_state.toggle_walk_frame(step);
       }
 
       ThisThread::sleep_for(50ms);

semestralka1/src/timing/speed_controller.cpp

@@ -0,0 +1,34 @@
+// src/timing/speed_controller.cpp
+#include "speed_controller.h"
+
+void SpeedController::set_ground_speed(int spd) {
+    if (spd < 0) spd = 0;
+    if (spd > 30) spd = 30;
+    ground_speed = spd;
+}
+
+int SpeedController::frame_advance_for(int object_speed, int tick_counter) const {
+    if (object_speed <= 0) {
+        return 0;
+    }
+
+    if (ground_speed == 0) {
+        return 1 + object_speed;
+    }
+
+    const int delta = object_speed - ground_speed;
+
+    if (delta > 0) {
+        return 1 + delta;
+    }
+
+    if (delta == 0) {
+        return 1;
+    }
+
+    float ratio_f = static_cast<float>(ground_speed) / object_speed;
+    int ratio = static_cast<int>(ratio_f + 0.3f);
+    if (ratio < 1) ratio = 1;
+
+    return (tick_counter % ratio == 0) ? 1 : 0;
+}

semestralka1/src/timing/speed_controller.h

@@ -0,0 +1,19 @@
+// src/timing/speed_controller.h
+#pragma once
+#include "mbed.h"
+
+class SpeedController {
+private:
+    int ground_speed = 1;
+
+public:
+    SpeedController() = default;
+
+    void set_ground_speed(int spd);
+    int get_ground_speed() const { return ground_speed; }
+
+    // Calculates how many frames to advance for current tick.
+    // Takes object’s current speed and a global tick counter
+    // to automatically handle slower "wait" behavior.
+    int frame_advance_for(int object_speed, int tick_counter) const;
+};