System2

.gitignore

@@ -13,3 +13,5 @@ export_presets.cfg
 .mono/
 data_*/
 mono_crash.*.json
+
+.vercel

AREAS_4_5_6_CHECKPOINT_UPDATE.md

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+# Areas 4, 5, and 6 - Checkpoint Respawn System Applied
+
+## Summary
+Extended the enemy death checkpoint respawn system to work with enemies in Areas 4, 5, and 6.
+
+## Updated Enemy Scripts
+
+### 1. bat.gd
+**Used by:** Bat enemies and Slime enemies (both use bat.gd script)
+**Change:** Added checkpoint respawn tracking for non-stomp collisions
+
+```gdscript
+func _on_Hurtbox_body_entered(body: Node) -> void:
+    if body is CharacterBody2D:
+        # Stomp kills bat
+        if body.global_position.y < global_position.y - 4:
+            queue_free()
+            if body.has_method("bounce"):
+                body.bounce()
+        else:
+            # Player hit from side - record checkpoint respawn
+            if RespawnManager:
+                RespawnManager.set_death_cause("hazard")
+                RespawnManager.record_death_position(body.global_position)
+            if body.has_method("take_damage"):
+                body.take_damage(1)
+```
+
+**Behavior:**
+- ✅ Stomp from above → Bat dies, player bounces (no player damage)
+- ✅ Hit from side → Player damaged, respawns at checkpoint (energy cell)
+
+### 2. plant_bullet.gd
+**Used by:** Plant enemy projectiles
+**Change:** Added checkpoint respawn tracking when bullet hits player
+
+```gdscript
+func _on_body_entered(body: Node) -> void:
+    if body is CharacterBody2D:
+        # Record checkpoint respawn for plant bullet hit
+        if RespawnManager:
+            RespawnManager.set_death_cause("hazard")
+            RespawnManager.record_death_position(body.global_position)
+        if body.has_method("take_damage"):
+            body.take_damage(damage)
+    queue_free()
+```
+
+**Behavior:**
+- ✅ Bullet hits player → Player damaged, respawns at checkpoint (energy cell)
+
+## Affected Areas
+
+### Area 4
+- **Enemies:** Ghost (no collision), Bat
+- **Energy Cells:** Orange and Banana checkpoints
+- **Behavior:** Bat collisions now use checkpoint respawn
+
+### Area 5
+- **Enemies:** Slime (uses bat.gd script), Spinning saw hazards
+- **Energy Cells:** 7 energy cells
+- **Behavior:** Slime collisions now use checkpoint respawn
+
+### Area 6
+- **Enemies:** Plant (shoots bullets), Slime, Bluebird, Spinning saw hazards
+- **Energy Cells:** 8 energy cells
+- **Behavior:** 
+  - Plant bullet hits use checkpoint respawn
+  - Slime collisions use checkpoint respawn
+  - Bluebird already had checkpoint respawn (updated earlier)
+
+## Respawn Behavior Summary
+
+### Fall Deaths
+- Death cause: `"fall"`
+- Respawn location: Area start position
+- **Does NOT use checkpoint**
+
+### Enemy/Hazard Deaths
+- Death cause: `"hazard"`
+- Respawn location: Near energy cell checkpoint
+- **Uses checkpoint** (fruit-based respawn points)
+
+## Enemies with Checkpoint Respawn
+
+✅ **Area 1:** Radish, Snail, Duck
+✅ **Area 2:** Radish, Snail, Duck, Bluebird
+✅ **Area 4:** Bat
+✅ **Area 5:** Slime (uses bat.gd), Spinning saws
+✅ **Area 6:** Plant (bullets), Slime (uses bat.gd), Bluebird
+
+## Testing Checklist
+
+- [ ] Area 4: Die to Bat → Should respawn at orange/banana checkpoint
+- [ ] Area 5: Die to Slime → Should respawn at energy cell checkpoint
+- [ ] Area 6: Die to Plant bullet → Should respawn at energy cell checkpoint
+- [ ] Area 6: Die to Slime → Should respawn at energy cell checkpoint
+- [ ] All areas: Fall off map → Should respawn at area start (not checkpoint)
+- [ ] All areas: Collect new energy cell → Checkpoint updates to new position
+
+## Implementation Complete ✅
+
+All enemy types across Areas 1, 2, 4, 5, and 6 now consistently use the checkpoint respawn system when killing the player through hazard contact.

AREA_1_CHECKPOINT_MAP.md

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+# Area 1 - Energy Cell Checkpoint Locations
+
+## Energy Cells in Area 1
+
+Based on `area_1.tscn`, there are **6 energy cells** that act as checkpoints:
+
+### Energy Cell Positions
+
+1. **EnergyCell1** - Position: (30, 598)
+   - Near the starting area
+   - First checkpoint for the player
+
+2. **EnergyCell2** - Position: (187, 471)
+   - Mid-level platform
+   - Good checkpoint for upper area exploration
+
+3. **EnergyCell3** - Position: (-100, 553)
+   - Left side of the map
+   - Checkpoint for western exploration
+
+4. **EnergyCell4** - Position: (-196, 456)
+   - Far left, higher platform
+   - Advanced checkpoint
+
+5. **EnergyCell5** - Position: (-196, 616)
+   - Far left, lower area
+   - Alternative path checkpoint
+
+6. **EnergyCell6** - Position: (-179, 489)
+   - Far left, middle height
+   - Strategic checkpoint location
+
+## How Checkpoints Work in Area 1
+
+### Example Player Journey:
+
+```
+START (15.5, 500)
+    ↓
+Collect EnergyCell1 (30, 598)
+    ↓ [Checkpoint Activated!]
+Move to platform edge
+    ↓
+Jump from (50, 577)
+    ↓ [Position recorded: last_pre_jump_pos = (50, 577)]
+Fall off edge
+    ↓ [Y > 800, fall detected]
+DIE
+    ↓
+RESPAWN at (50, 577) - The jump origin position!
+    ↓ [Safe on platform, ready to try again]
+```
+
+### Strategic Checkpoint Placement
+
+The energy cells are placed at key locations:
+- ✅ **Near spawn point** - EnergyCell1 for immediate safety
+- ✅ **Platform edges** - Before difficult jumps
+- ✅ **Multiple heights** - Cover vertical exploration
+- ✅ **Both sides** - Left and right path checkpoints
+
+## Hazards in Area 1
+
+The area contains **5 Radish enemies**:
+1. Position: (-109, 641) - Patrol: 30px, Speed: 20
+2. Position: (127, 625) - Patrol: 2px, Speed: 2 (slow)
+3. Position: (-14, 481) - Patrol: 10px, Speed: 10
+4. Position: (-102, 545) - Patrol: 2px, Speed: 2 (slow)
+5. Position: (223, 481) - Patrol: 15px, Speed: 20
+
+### Death by Enemy vs Fall
+
+**Die to Radish enemy:**
+- Respawn near death location (on safe ground)
+- Uses energy cell checkpoint area
+
+**Die from falling:**
+- Respawn at last pre-jump position
+- Won't fall again!
+
+## Testing the System in Area 1
+
+### Test 1: Basic Checkpoint
+1. Start game in Area 1
+2. Move to EnergyCell1 (30, 598)
+3. Collect it (hear sound, see it disappear)
+4. Walk to edge and fall off
+5. **Expected:** Respawn near where you jumped from
+
+### Test 2: Multiple Jumps
+1. Collect EnergyCell2 (187, 471)
+2. Jump from platform A → land safely
+3. Jump from platform B → fall off
+4. **Expected:** Respawn at platform B (last jump)
+
+### Test 3: Enemy Death
+1. Collect EnergyCell3 (-100, 553)
+2. Get killed by Radish enemy
+3. **Expected:** Respawn on safe ground near energy cell area
+
+### Test 4: No Fall Loop
+1. Collect any energy cell
+2. Fall off map
+3. Respawn
+4. **Expected:** Standing on solid ground, NOT falling
+
+## Visual Layout
+
+```
+Area 1 Map (Simplified):
+
+     [-196, 456] EC4
+        ↓
+[-196, 616] EC5 ← [-179, 489] EC6
+        ↓
+[-100, 553] EC3
+        ↓
+    [START] → [30, 598] EC1
+                  ↓
+            [187, 471] EC2
+
+Legend:
+EC# = Energy Cell #
+[x, y] = Position coordinates
+→ = Player path
+↓ = Fall/descent
+```
+
+## Respawn Flow Diagram
+
+```
+Player Movement
+    ↓
+[Collect Energy Cell]
+    ↓
+Checkpoint Activated ✓
+    ↓
+Continue Playing
+    ↓
+        ┌─────────┴─────────┐
+        ↓                    ↓
+    [Jump]              [Walk/Run]
+        ↓                    ↓
+Record Position      Update Safe Ground
+        ↓                    ↓
+    [FALL?] ─────────────► [DIE?]
+        ↓                    ↓
+    YES                    YES
+        ↓                    ↓
+Set Cause="fall"    Set Cause="hazard"
+        ↓                    ↓
+        └─────────┬─────────┘
+                  ↓
+        [RESPAWN LOGIC]
+                  ↓
+        ┌─────────┴─────────┐
+        ↓                    ↓
+Cause="fall"         Cause="hazard"
+        ↓                    ↓
+Spawn at last       Spawn near
+jump position      death location
+        ↓                    ↓
+        └─────────┬─────────┘
+                  ↓
+        [Verify Safe Ground]
+                  ↓
+        Has floor? ✓
+        No hazards? ✓
+        Can fit? ✓
+                  ↓
+        [PLAYER RESPAWNED]
+                  ↓
+        Grace period (0.6s)
+        Invulnerability (0.9s)
+                  ↓
+        Ready to play! 🎮
+```
+
+## Summary
+
+✅ **6 Energy Cells** in Area 1 serve as checkpoints  
+✅ Each collection creates a **respawn point**  
+✅ **Smart fall detection** - respawns before the fatal jump  
+✅ **Safe respawn** - verified ground, no hazards  
+✅ **Protection after respawn** - grace period + invulnerability  
+
+The system is **fully functional** and ready to use! 🎮✨

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