Combat base added

.claude/settings.local.json

@@ -0,0 +1,7 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(find:*)"
+    ]
+  }
+}

docs/superpowers/plans/2026-04-02-combat-system.md

@@ -0,0 +1,205 @@
+# Combat System Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Create a stateless combat system that produces pre-combat proposals and resolves attacks between two units.
+
+**Architecture:** A `CombatProposal` resource holds snapshot stats for attacker and defender. A `CombatSystem` node exposes `create_proposal()` to build proposals and `apply_proposal()` to resolve combat, modifying unit HP directly. The system is added to the strategy phase scene tree.
+
+**Tech Stack:** Godot 4.6, GDScript
+
+---
+
+## File Structure
+
+| File | Responsibility |
+|------|---------------|
+| `resources/resource_definitions/combat_proposal.gd` | CombatProposal resource with CombatantStats inner class — holds unit references and snapshot stats |
+| `nodes/combat_system.gd` | CombatSystem node — `create_proposal()` and `apply_proposal()` methods |
+| `scenes/strategy_phase.tscn` | Scene tree — add CombatSystem node |
+
+---
+
+### Task 1: Create the CombatProposal resource
+
+**Files:**
+- Create: `resources/resource_definitions/combat_proposal.gd`
+
+- [ ] **Step 1: Create the CombatantStats inner class and CombatProposal resource**
+
+```gdscript
+# resources/resource_definitions/combat_proposal.gd
+class_name CombatProposal extends Resource
+
+class CombatantStats:
+	var unit: Unit
+	var hp: int
+	var sp: int
+	var hit: int
+	var atk: int
+	var def: int
+	var spd: int
+
+var attacker: CombatantStats
+var defender: CombatantStats
+```
+
+- [ ] **Step 2: Verify the file loads without errors**
+
+Open the Godot editor and check the Output panel for parse errors. Confirm `CombatProposal` appears as a recognized class by typing it in any script's autocomplete.
+
+---
+
+### Task 2: Create the CombatSystem node
+
+**Files:**
+- Create: `nodes/combat_system.gd`
+- Reference: `resources/resource_definitions/combat_proposal.gd`
+- Reference: `resources/resource_definitions/unit_stats.gd`
+- Reference: `nodes/unit.gd`
+
+- [ ] **Step 1: Create combat_system.gd with create_proposal**
+
+```gdscript
+# nodes/combat_system.gd
+class_name CombatSystem extends Node
+
+func create_proposal(attacker: Unit, defender: Unit) -> CombatProposal:
+	var proposal := CombatProposal.new()
+
+	proposal.attacker = _snapshot(attacker, defender)
+	proposal.defender = _snapshot(defender, attacker)
+
+	return proposal
+
+func _snapshot(unit: Unit, opponent: Unit) -> CombatProposal.CombatantStats:
+	var stats := CombatProposal.CombatantStats.new()
+	stats.unit = unit
+	stats.hp = unit.current_stats.current_hp
+	stats.sp = unit.current_stats.current_sp
+	stats.hit = unit.current_stats.hit - opponent.current_stats.eva
+	stats.atk = unit.current_stats.phys_atk
+	stats.def = unit.current_stats.phys_def
+	stats.spd = unit.current_stats.spd
+	return stats
+```
+
+- [ ] **Step 2: Add apply_proposal method**
+
+Append to `nodes/combat_system.gd`:
+
+```gdscript
+func apply_proposal(proposal: CombatProposal) -> void:
+	var atk_stats := proposal.attacker
+	var def_stats := proposal.defender
+	var atk_unit := atk_stats.unit
+	var def_unit := def_stats.unit
+
+	# Attacker strikes
+	var atk_roll := randi_range(1, 100)
+	if atk_roll <= atk_stats.hit:
+		var damage := maxi(atk_stats.atk - def_stats.def, 0)
+		def_unit.current_stats.current_hp -= damage
+
+	# Counterattack if defender survives
+	if def_unit.current_stats.current_hp > 0:
+		var def_roll := randi_range(1, 100)
+		if def_roll <= def_stats.hit:
+			var damage := maxi(def_stats.atk - atk_stats.def, 0)
+			atk_unit.current_stats.current_hp -= damage
+```
+
+- [ ] **Step 3: Verify the file loads without errors**
+
+Open the Godot editor and check the Output panel for parse errors on `combat_system.gd`.
+
+---
+
+### Task 3: Add CombatSystem to the strategy phase scene
+
+**Files:**
+- Modify: `scenes/strategy_phase.tscn`
+
+- [ ] **Step 1: Add CombatSystem node and script reference to the scene**
+
+Add a new `ext_resource` entry for the combat_system.gd script and a new node to the scene file. Append after the existing ext_resources and add the node as a child of the root `CombatTest` node:
+
+New ext_resource (use the next available id, `6_xxxxx` — the exact suffix will be assigned):
+```
+[ext_resource type="Script" path="res://nodes/combat_system.gd" id="6_combat"]
+```
+
+New node (add after the PlayerController node block):
+```
+[node name="CombatSystem" type="Node" parent="."]
+script = ExtResource("6_combat")
+```
+
+The resulting scene tree order:
+```
+CombatTest (Node2D)
+  ├─ CombatUI
+  ├─ CombatMap
+  ├─ PlayerController
+  ├─ CombatSystem       <-- new
+  ├─ Camera2D
+  └─ AudioStreamPlayer
+```
+
+- [ ] **Step 2: Verify in the Godot editor**
+
+Open `scenes/strategy_phase.tscn` in the editor. Confirm:
+- CombatSystem node appears in the scene tree
+- No errors in the Output panel
+- The scene runs without crashes
+
+---
+
+### Task 4: Manual integration verification
+
+- [ ] **Step 1: Verify create_proposal works**
+
+Temporarily add the following to `CombatSystem._ready()` to test proposal creation (remove after verification):
+
+```gdscript
+func _ready() -> void:
+	# Temporary test — remove after verification
+	var units := get_tree().get_nodes_in_group("units")
+	if units.size() >= 2:
+		var proposal := create_proposal(units[0], units[1])
+		print("Proposal created:")
+		print("  Attacker: ", proposal.attacker.unit.current_info.name,
+			" HP=", proposal.attacker.hp,
+			" ATK=", proposal.attacker.atk,
+			" DEF=", proposal.attacker.def,
+			" HIT=", proposal.attacker.hit)
+		print("  Defender: ", proposal.defender.unit.current_info.name,
+			" HP=", proposal.defender.hp,
+			" ATK=", proposal.defender.atk,
+			" DEF=", proposal.defender.def,
+			" HIT=", proposal.defender.hit)
+```
+
+Run the scene with at least 2 units deployed. Check the Output panel for correct stat snapshots.
+
+- [ ] **Step 2: Verify apply_proposal works**
+
+Extend the temporary `_ready()` to also apply the proposal:
+
+```gdscript
+		print("Before combat: Attacker HP=", proposal.attacker.unit.current_stats.current_hp,
+			" Defender HP=", proposal.defender.unit.current_stats.current_hp)
+		apply_proposal(proposal)
+		print("After combat: Attacker HP=", proposal.attacker.unit.current_stats.current_hp,
+			" Defender HP=", proposal.defender.unit.current_stats.current_hp)
+```
+
+Run multiple times (results will vary due to hit rolls). Confirm:
+- Defender HP decreases when attacker hits
+- Attacker HP decreases when defender counterattacks
+- HP never increases (no negative damage)
+- If defender dies (HP <= 0), no counterattack occurs
+
+- [ ] **Step 3: Remove temporary test code**
+
+Delete the entire `_ready()` method from `combat_system.gd`.

docs/superpowers/specs/2026-04-02-combat-system-design.md

@@ -0,0 +1,87 @@
+# Combat System
+
+## Overview
+
+A stateless CombatSystem node that creates pre-combat proposals and applies combat resolution between two units. The system encapsulates all combat stat calculation so other systems don't need to know proposal logic.
+
+## CombatProposal Resource
+
+`resources/resource_definitions/combat_proposal.gd`
+
+A Resource containing two sides — attacker and defender. Each side holds:
+
+- A reference to the `Unit` node
+- Pre-combat snapshot stats via an inner class `CombatantStats`:
+  - `hp: int` — from `current_stats.current_hp`
+  - `sp: int` — from `current_stats.current_sp`
+  - `hit: int` — calculated as `own hit - opponent's eva`
+  - `atk: int` — from `current_stats.phys_atk`
+  - `def: int` — from `current_stats.phys_def`
+  - `spd: int` — from `current_stats.spd`
+
+### Stat Calculation
+
+For the **attacker** side:
+- `atk` = attacker's `phys_atk`
+- `def` = attacker's `phys_def`
+- `hit` = attacker's `hit` - defender's `eva`
+- `hp`, `sp`, `spd` copied directly from attacker's `current_stats`
+
+For the **defender** side:
+- `atk` = defender's `phys_atk`
+- `def` = defender's `phys_def`
+- `hit` = defender's `hit` - attacker's `eva`
+- `hp`, `sp`, `spd` copied directly from defender's `current_stats`
+
+In the future, different attacks may swap between physical and magic stats, but for now only physical stats are used.
+
+## CombatSystem Node
+
+`nodes/combat_system.gd`
+
+A `Node` added to the strategy phase scene tree. Stateless — operates purely on units passed in.
+
+### `create_proposal(attacker: Unit, defender: Unit) -> CombatProposal`
+
+- Reads both units' `current_stats`
+- Builds a `CombatProposal` with snapshot stats for each side
+- Applies cross-calculations (hit - eva)
+- Returns the proposal without modifying any unit state
+
+### `apply_proposal(proposal: CombatProposal) -> void`
+
+1. **Attacker strikes:** Roll random int 1–100. If roll <= attacker's calculated `hit`, apply `max(attacker.atk - defender.def, 0)` damage to the defender Unit's `current_stats.current_hp` (modifies the actual unit, not the snapshot).
+2. **Counterattack:** If the defender Unit's `current_stats.current_hp > 0` after the attack, roll 1–100 for defender. If roll <= defender's calculated `hit`, apply `max(defender.atk - attacker.def, 0)` damage to the attacker Unit's `current_stats.current_hp`.
+
+- Damage has a floor of 0 (no negative damage / healing).
+- Range is ignored for now. In the future, counterattack will depend on whether the defender has skills at appropriate range (defaulting to a "defend" action if not).
+
+## Scene Integration
+
+The CombatSystem node is added to `scenes/strategy_phase.tscn` as a sibling of PlayerController, CombatMap, etc. No exports needed.
+
+```
+CombatTest (Node2D)
+  ├─ CombatUI
+  ├─ CombatMap
+  ├─ PlayerController
+  ├─ CombatSystem       <-- new
+  ├─ Camera2D
+  └─ AudioStreamPlayer
+```
+
+## Files Changed
+
+| File | Change |
+|------|--------|
+| `resources/resource_definitions/combat_proposal.gd` | New — CombatProposal resource with CombatantStats inner class |
+| `nodes/combat_system.gd` | New — CombatSystem node with `create_proposal` and `apply_proposal` |
+| `scenes/strategy_phase.tscn` | Add CombatSystem node to scene tree |
+
+## Out of Scope
+
+- Magic attack/defense selection (future: different attack types swap stats)
+- Range-based counterattack eligibility (future: defend action when no skills in range)
+- Critical hits
+- UI for displaying the combat proposal
+- Animations or visual feedback for combat resolution

nodes/combat_map.gd

@@ -25,11 +25,9 @@ func _ready() -> void:
 func snap_to_grid(pos: Vector2) -> Vector2:
 	return Vector2(floorf(pos.x / TILE_SIZE), floorf(pos.y / TILE_SIZE)) * TILE_SIZE
 
-
 func world_to_coords(pos: Vector2) -> Vector2i:
 	return Vector2i(snap_to_grid(pos) / TILE_SIZE)
 
-
 func coords_to_world(coords: Vector2i) -> Vector2:
 	return Vector2(coords) * TILE_SIZE
 

nodes/combat_system.gd

@@ -0,0 +1,50 @@
+class_name CombatSystem extends Node
+
+func create_proposal(attacker: Unit, defender: Unit) -> CombatProposal:
+	var proposal := CombatProposal.new()
+
+	proposal.attacker = _snapshot(attacker, defender)
+	proposal.defender = _snapshot(defender, attacker)
+
+	return proposal
+
+func _snapshot(unit: Unit, opponent: Unit) -> CombatProposal.CombatantStats:
+	var stats := CombatProposal.CombatantStats.new()
+	stats.unit = unit
+	stats.hp = unit.current_stats.current_hp
+	stats.sp = unit.current_stats.current_sp
+	stats.hit = unit.current_stats.hit - opponent.current_stats.eva
+	stats.atk = unit.current_stats.phys_atk
+	stats.def = unit.current_stats.phys_def
+	stats.spd = unit.current_stats.spd
+	return stats
+
+func process_combat(attacker: Unit, defender: Unit) -> void:
+	var proposal := create_proposal(attacker, defender)
+	var atk_name := attacker.current_info.name
+	var def_name := defender.current_info.name
+	print("=== Combat: %s vs %s ===" % [atk_name, def_name])
+	print("  %s — HP:%d ATK:%d DEF:%d HIT:%d" % [atk_name, proposal.attacker.hp, proposal.attacker.atk, proposal.attacker.def, proposal.attacker.hit])
+	print("  %s — HP:%d ATK:%d DEF:%d HIT:%d" % [def_name, proposal.defender.hp, proposal.defender.atk, proposal.defender.def, proposal.defender.hit])
+	apply_proposal(proposal)
+	print("  Result: %s HP=%d, %s HP=%d" % [atk_name, attacker.current_stats.current_hp, def_name, defender.current_stats.current_hp])
+
+
+func apply_proposal(proposal: CombatProposal) -> void:
+	var atk_stats := proposal.attacker
+	var def_stats := proposal.defender
+	var atk_unit := atk_stats.unit
+	var def_unit := def_stats.unit
+
+	# Attacker strikes
+	var atk_roll := randi_range(1, 100)
+	if atk_roll <= atk_stats.hit:
+		var damage := maxi(atk_stats.atk - def_stats.def, 0)
+		def_unit.current_stats.current_hp -= damage
+
+	# Counterattack if defender survives
+	if def_unit.current_stats.current_hp > 0:
+		var def_roll := randi_range(1, 100)
+		if def_roll <= def_stats.hit:
+			var damage := maxi(def_stats.atk - atk_stats.def, 0)
+			atk_unit.current_stats.current_hp -= damage

nodes/combat_system.gd.uid

@@ -0,0 +1 @@
+uid://cf4ivrcbky0s3

nodes/player_controller.gd

@@ -4,6 +4,8 @@ const SPEED = 192.0
 
 @export var dl_map: CombatMap
 
+signal combat_requested(attacker: Unit, defender: Unit)
+
 var _selected_unit: Unit = null
 var _target_pos: Vector2
 var _goal_pos: Vector2
@@ -16,6 +18,9 @@ func _unhandled_input(event: InputEvent) -> void:
 		var clicked_unit := _get_unit_at(world_pos)
 
 		if clicked_unit:
+			if _selected_unit and clicked_unit != _selected_unit:
+				combat_requested.emit(_selected_unit, clicked_unit)
+			else:
 				_select_unit(clicked_unit)
 			get_viewport().set_input_as_handled()
 		elif _selected_unit:

resources/resource_definitions/combat_proposal.gd

@@ -0,0 +1,13 @@
+class_name CombatProposal extends Resource
+
+class CombatantStats:
+	var unit: Unit
+	var hp: int
+	var sp: int
+	var hit: int
+	var atk: int
+	var def: int
+	var spd: int
+
+var attacker: CombatantStats
+var defender: CombatantStats

resources/resource_definitions/combat_proposal.gd.uid

@@ -0,0 +1 @@
+uid://b4oatflqabi37

resources/resource_definitions/unit_stats.gd

@@ -2,8 +2,10 @@ class_name UnitStats extends Resource
 
 @export var max_hp: int = 10
 @export var current_hp: int
-@export var phys_atk: int = 1
-@export var phys_def: int = 1
+@export var max_sp: int = 10
+@export var current_sp: int = 10
+@export var phys_atk: int = 10
+@export var phys_def: int = 5
 @export var magic_atk: int = 0
 @export var magic_def: int = 0
 @export var hit: int = 85

scenes/main_menu.tscn

@@ -7,7 +7,7 @@
 resource_name = "StartButton"
 script/source = "extends Button
 
-const COMBAT_SCENE = preload(\"res://scenes/combat_test.tscn\")
+const COMBAT_SCENE = preload(\"res://scenes/strategy_phase.tscn\")
 const UNIT_SCENE = preload(\"res://prefabs/unit.tscn\")
 const PLAYER_ALLEGIANCE = preload(\"res://resources/allegiance_types/player_allegiance.tres\")
 const ENEMY_ALLEGIANCE = preload(\"res://resources/allegiance_types/enemy_allegiance.tres\")

scenes/strategy_phase.tscn

@@ -1,26 +1,31 @@
 [gd_scene format=3 uid="uid://wy7ur5r23ek3"]
 
-[ext_resource type="PackedScene" uid="uid://cy7r0udfcsqbn" path="res://prefabs/combat_ui.tscn" id="1_5jbmu"]
-[ext_resource type="PackedScene" uid="uid://dkhyh5ce4iuk3" path="res://prefabs/combat_map.tscn" id="1_7abyo"]
-[ext_resource type="Script" uid="uid://csdcbi2gtwrly" path="res://scripts/camera_controller.gd" id="3_cam"]
-[ext_resource type="Script" uid="uid://dfojm3n0em4ef" path="res://nodes/player_controller.gd" id="4_s5ga2"]
-[ext_resource type="AudioStream" uid="uid://dsikulned64qt" path="res://assets/music/combat_bgm_01.OGG" id="6_0yobm"]
+[ext_resource type="PackedScene" uid="uid://cy7r0udfcsqbn" path="res://prefabs/combat_ui.tscn" id="1_6gip4"]
+[ext_resource type="PackedScene" uid="uid://dkhyh5ce4iuk3" path="res://prefabs/combat_map.tscn" id="2_iuoca"]
+[ext_resource type="Script" uid="uid://dfojm3n0em4ef" path="res://nodes/player_controller.gd" id="3_esrqm"]
+[ext_resource type="Script" uid="uid://csdcbi2gtwrly" path="res://scripts/camera_controller.gd" id="4_ww3c6"]
+[ext_resource type="AudioStream" uid="uid://dsikulned64qt" path="res://assets/music/combat_bgm_01.OGG" id="5_ficdm"]
+[ext_resource type="Script" uid="uid://cf4ivrcbky0s3" path="res://nodes/combat_system.gd" id="6_combat"]
 
 [node name="CombatTest" type="Node2D" unique_id=855645983]
 
-[node name="CombatUI" parent="." unique_id=329168107 instance=ExtResource("1_5jbmu")]
+[node name="CombatUI" parent="." unique_id=329168107 instance=ExtResource("1_6gip4")]
 
-[node name="CombatMap" parent="." unique_id=546780706 instance=ExtResource("1_7abyo")]
+[node name="CombatMap" parent="." unique_id=546780706 instance=ExtResource("2_iuoca")]
 
 [node name="PlayerController" type="Node" parent="." unique_id=774568109 node_paths=PackedStringArray("dl_map")]
-script = ExtResource("4_s5ga2")
+script = ExtResource("3_esrqm")
 dl_map = NodePath("../CombatMap")
 
+[node name="CombatSystem" type="Node" parent="." unique_id=1234567890]
+script = ExtResource("6_combat")
+
 [node name="Camera2D" type="Camera2D" parent="." unique_id=1739569732]
 zoom = Vector2(1.5, 1.5)
-script = ExtResource("3_cam")
-
+script = ExtResource("4_ww3c6")
 
 [node name="AudioStreamPlayer" type="AudioStreamPlayer" parent="." unique_id=1057500234]
-stream = ExtResource("6_0yobm")
+stream = ExtResource("5_ficdm")
 autoplay = true
+
+[connection signal="combat_requested" from="PlayerController" to="CombatSystem" method="process_combat"]

scenes/test_scene.tscn

@@ -8,6 +8,7 @@
 shader = ExtResource("1_nd71p")
 shader_parameter/flag_mask = ExtResource("2_7ddre")
 shader_parameter/team_color = Color(0.84830123, 0.29993045, 0.292207, 1)
+shader_parameter/chroma_threshold = 0.10000000475
 
 [sub_resource type="AtlasTexture" id="AtlasTexture_j8ivh"]
 atlas = ExtResource("1_g7g4h")

shaders/masked_palette_swap.gdshader

@@ -2,9 +2,18 @@ shader_type canvas_item;
 
 uniform sampler2D flag_mask : source_color, hint_default_black;
 uniform vec4 team_color : source_color = vec4(1.0, 0.0, 0.0, 1.0); // red by default
+uniform float chroma_threshold : hint_range(0.0, 1.0) = 0.01;
 
 void fragment() {
 	vec4 base = texture(TEXTURE, UV);
+
+	// --- Chroma key: discard near-black pixels ---
+	float max_channel = max(base.r, max(base.g, base.b));
+	if (max_channel < chroma_threshold) {
+		discard;
+	}
+
+	// --- Palette swap using masks ---
     float mask = texture(flag_mask, UV).r; // 1.0 on flag pixels, 0.0 on castle
 
     // Use the grey luminance as a brightness multiplier on the team color