Create app.py

app.py

@@ -0,0 +1,148 @@
+import streamlit as st
+import json
+import random
+
+# Initialize session state
+if 'camera_offset' not in st.session_state:
+    st.session_state.camera_offset = {"x": 0, "y": 0}
+if 'objects' not in st.session_state:
+    st.session_state.objects = []
+
+def update_canvas(direction=None, new_x=None, new_y=None, add_object=False, drag_x=0, drag_y=0):
+    if direction:
+        speed = 5
+        if direction == "up":
+            st.session_state.camera_offset["y"] -= speed
+        elif direction == "down":
+            st.session_state.camera_offset["y"] += speed
+        elif direction == "left":
+            st.session_state.camera_offset["x"] -= speed
+        elif direction == "right":
+            st.session_state.camera_offset["x"] += speed
+    
+    if new_x is not None and new_y is not None:
+        st.session_state.camera_offset["x"] = int(new_x) - 300
+        st.session_state.camera_offset["y"] = int(new_y) - 200
+    
+    if add_object:
+        new_object = {
+            "x": st.session_state.camera_offset["x"] + 300,
+            "y": st.session_state.camera_offset["y"] + 200,
+            "size": 10,
+            "color": f"rgb({random.randint(0,255)},{random.randint(0,255)},{random.randint(0,255)})"
+        }
+        st.session_state.objects.append(new_object)
+    
+    st.session_state.camera_offset["x"] += int(drag_x)
+    st.session_state.camera_offset["y"] += int(drag_y)
+
+def render_canvas():
+    state = json.dumps({
+        "cameraOffset": st.session_state.camera_offset,
+        "objects": st.session_state.objects
+    })
+    
+    return f"""
+    <div id="canvasContainer">
+        <canvas id="infiniteCanvas" width="600" height="400" style="border: 1px solid black; cursor: grab;"></canvas>
+        <p id="coordinates">Player coordinates: X: {300 + st.session_state.camera_offset['x']}, Y: {200 + st.session_state.camera_offset['y']}</p>
+    </div>
+    <script>
+    let cameraOffset = {st.session_state.camera_offset};
+    let objects = {json.dumps(st.session_state.objects)};
+    const playerSize = 20;
+    const gridSize = 50;
+    const canvas = document.getElementById('infiniteCanvas');
+    const ctx = canvas.getContext('2d');
+    const coordsDisplay = document.getElementById('coordinates');
+
+    function drawGrid() {{
+        ctx.strokeStyle = '#ddd';
+        ctx.lineWidth = 0.5;
+        for (let x = -cameraOffset.x % gridSize; x < canvas.width; x += gridSize) {{
+            ctx.beginPath();
+            ctx.moveTo(x, 0);
+            ctx.lineTo(x, canvas.height);
+            ctx.stroke();
+        }}
+        for (let y = -cameraOffset.y % gridSize; y < canvas.height; y += gridSize) {{
+            ctx.beginPath();
+            ctx.moveTo(0, y);
+            ctx.lineTo(canvas.width, y);
+            ctx.stroke();
+        }}
+    }}
+
+    function drawPlayer() {{
+        ctx.fillStyle = 'red';
+        ctx.fillRect(canvas.width / 2 - playerSize / 2, canvas.height / 2 - playerSize / 2, playerSize, playerSize);
+    }}
+
+    function drawObjects() {{
+        objects.forEach(obj => {{
+            ctx.fillStyle = obj.color;
+            ctx.fillRect(
+                obj.x - cameraOffset.x,
+                obj.y - cameraOffset.y,
+                obj.size,
+                obj.size
+            );
+        }});
+    }}
+
+    function draw() {{
+        ctx.clearRect(0, 0, canvas.width, canvas.height);
+        drawGrid();
+        drawObjects();
+        drawPlayer();
+    }}
+
+    draw();
+    </script>
+    """
+
+st.title("Infinite Canvas")
+
+# Render canvas
+st.components.v1.html(render_canvas(), height=450)
+
+# Control buttons
+col1, col2, col3, col4 = st.columns(4)
+with col1:
+    if st.button("↑"):
+        update_canvas(direction="up")
+with col2:
+    if st.button("↓"):
+        update_canvas(direction="down")
+with col3:
+    if st.button("←"):
+        update_canvas(direction="left")
+with col4:
+    if st.button("→"):
+        update_canvas(direction="right")
+
+# Go to coordinates
+col1, col2, col3 = st.columns(3)
+with col1:
+    new_x = st.number_input("X Coordinate", value=300 + st.session_state.camera_offset['x'])
+with col2:
+    new_y = st.number_input("Y Coordinate", value=200 + st.session_state.camera_offset['y'])
+with col3:
+    if st.button("Go to Coordinates"):
+        update_canvas(new_x=new_x, new_y=new_y)
+
+# Add object button
+if st.button("Add Object"):
+    update_canvas(add_object=True)
+
+# Drag sliders
+drag_x = st.slider("Drag X", -50, 50, 0)
+drag_y = st.slider("Drag Y", -50, 50, 0)
+
+if drag_x != 0 or drag_y != 0:
+    update_canvas(drag_x=drag_x, drag_y=drag_y)
+    st.experimental_rerun()
+
+# Force rerun to update canvas
+if st.button("Update Canvas"):
+    st.experimental_rerun()