Add target preview badges

scripts/scenes/battle_scene.gd

@@ -34,6 +34,7 @@ const UI_SFX_VOLUME_DB := -8.0
 const FLOATING_TEXT_LIFETIME := 1.0
 const FLOATING_TEXT_RISE := 42.0
 const UNIT_MOVE_ANIMATION_DURATION := 0.18
+const TARGET_PREVIEW_BADGE_SIZE := Vector2(92, 22)
 
 var state: BattleState = BattleStateScript.new()
 var campaign_state: CampaignState = CampaignStateScript.new()
@@ -159,6 +160,7 @@ func _draw() -> void:
 	_draw_map()
 	_draw_overlays()
 	_draw_units()
+	_draw_target_preview_badge()
 	_draw_floating_texts()
 
 
@@ -911,6 +913,150 @@ func _floating_text_color(kind: String) -> Color:
 	return Color.WHITE
 
 
+func _draw_target_preview_badge() -> void:
+	var badge := _target_preview_badge()
+	if badge.is_empty():
+		return
+
+	var cell: Vector2i = badge.get("cell", hover_cell)
+	if not state.is_inside(cell):
+		return
+
+	var rect := _rect_for_cell(cell)
+	var size := TARGET_PREVIEW_BADGE_SIZE
+	var badge_rect := Rect2(
+		rect.position + Vector2((TILE_SIZE - size.x) * 0.5, 5.0),
+		size
+	)
+	var kind := str(badge.get("kind", ""))
+	var color := _target_preview_badge_color(kind)
+	var background := Color(0.025, 0.028, 0.034, 0.88)
+	var font := ThemeDB.fallback_font
+	var text := str(badge.get("text", ""))
+
+	draw_rect(badge_rect, background)
+	draw_rect(badge_rect, color, false, 2.0)
+	draw_string(font, badge_rect.position + Vector2(0, 16), text, HORIZONTAL_ALIGNMENT_CENTER, badge_rect.size.x, 14, color)
+
+
+func _target_preview_badge() -> Dictionary:
+	if _is_input_locked() or not state.is_inside(hover_cell):
+		return {}
+
+	var selected := state.get_selected_unit()
+	if selected.is_empty():
+		return {}
+
+	var target := state.get_unit_at(hover_cell)
+	if not selected_skill_id.is_empty():
+		return _skill_target_preview_badge(selected, target)
+	if not selected_item_id.is_empty():
+		return _item_target_preview_badge(selected, target)
+	return _attack_target_preview_badge(selected, target)
+
+
+func _attack_target_preview_badge(selected: Dictionary, target: Dictionary) -> Dictionary:
+	if target.is_empty() or target.get("team", "") == selected.get("team", ""):
+		return {}
+
+	var preview := state.get_damage_preview(selected["id"], target["id"])
+	if preview.is_empty():
+		return {}
+
+	if not bool(preview.get("in_range", false)):
+		return _make_target_preview_badge("OUT", "invalid")
+
+	var hit_chance := int(preview.get("hit_chance", 100))
+	var result_text := "KO" if bool(preview.get("would_defeat", false)) else "-%d" % int(preview.get("damage", 0))
+	return _make_target_preview_badge("%s %d%%" % [result_text, hit_chance], "damage")
+
+
+func _skill_target_preview_badge(selected: Dictionary, target: Dictionary) -> Dictionary:
+	var preview := state.get_skill_preview(selected["id"], selected_skill_id, hover_cell)
+	if preview.is_empty() or target.is_empty():
+		return {}
+
+	if not bool(preview.get("valid_target", false)):
+		return _make_target_preview_badge("INVALID", "invalid")
+	if not bool(preview.get("in_range", false)):
+		return _make_target_preview_badge("OUT", "invalid")
+	if not bool(preview.get("has_mp", false)):
+		return _make_target_preview_badge("NO MP", "invalid")
+
+	var kind := str(preview.get("kind", "damage"))
+	if kind == "heal":
+		var heal := int(preview.get("heal", 0))
+		if heal <= 0:
+			return _make_target_preview_badge("FULL", "invalid")
+		return _make_target_preview_badge("+%d HP" % heal, "heal")
+	if kind == "support":
+		return _make_target_preview_badge(_compact_support_preview_text(str(preview.get("effect_text", "Support"))), "support")
+
+	var result_text := "KO" if bool(preview.get("would_defeat", false)) else "-%d" % int(preview.get("damage", 0))
+	return _make_target_preview_badge(result_text, "damage")
+
+
+func _item_target_preview_badge(selected: Dictionary, target: Dictionary) -> Dictionary:
+	var preview := state.get_item_preview(selected["id"], selected_item_id, hover_cell)
+	if preview.is_empty() or target.is_empty():
+		return {}
+
+	if not bool(preview.get("valid_target", false)):
+		return _make_target_preview_badge("INVALID", "invalid")
+	if not bool(preview.get("in_range", false)):
+		return _make_target_preview_badge("OUT", "invalid")
+	if int(preview.get("count", 0)) <= 0:
+		return _make_target_preview_badge("NONE", "invalid")
+
+	var hp_heal := int(preview.get("heal", 0))
+	var mp_heal := int(preview.get("mp_heal", 0))
+	if hp_heal <= 0 and mp_heal <= 0:
+		return _make_target_preview_badge("FULL", "invalid")
+	if hp_heal > 0 and mp_heal > 0:
+		return _make_target_preview_badge("+%d/%d" % [hp_heal, mp_heal], "heal")
+	if hp_heal > 0:
+		return _make_target_preview_badge("+%d HP" % hp_heal, "heal")
+	return _make_target_preview_badge("+%d MP" % mp_heal, "mp")
+
+
+func _make_target_preview_badge(text: String, kind: String) -> Dictionary:
+	if text.is_empty():
+		return {}
+	return {
+		"text": text,
+		"kind": kind,
+		"cell": hover_cell
+	}
+
+
+func _compact_support_preview_text(effect_text: String) -> String:
+	var parts := []
+	for raw_part in effect_text.split(","):
+		var part := raw_part.strip_edges()
+		var until_index := part.find(" until ")
+		if until_index >= 0:
+			part = part.substr(0, until_index)
+		if not part.is_empty() and part != "No support effect.":
+			parts.append(part)
+	if parts.is_empty():
+		return "SUPPORT"
+	if parts.size() > 1:
+		return "%s+" % parts[0]
+	return str(parts[0])
+
+
+func _target_preview_badge_color(kind: String) -> Color:
+	if kind == "damage":
+		return Color(1.0, 0.38, 0.26)
+	if kind == "heal":
+		return Color(0.44, 1.0, 0.52)
+	if kind == "mp":
+		return Color(0.54, 0.78, 1.0)
+	if kind == "support":
+		return Color(1.0, 0.88, 0.30)
+	return Color(0.78, 0.80, 0.86)
+
+
 func _cell_from_screen(screen_position: Vector2) -> Vector2i:
 	var local := screen_position - BOARD_OFFSET
 	if local.x < 0 or local.y < 0: