From: Lukas Krickl <lukas@krickl.dev>
Date: Sun, 30 Mar 2025 16:31:48 +0000 (+0200)
Subject: ui: Added basic mapping for cursor selector
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=b78eaae70e721caa7127c420b19055624b8dd0df;p=gbrg%2F.git

ui: Added basic mapping for cursor selector

This is the first step to being able to place buildings
---

diff --git a/src/buildings.s b/src/buildings.s
new file mode 100644
index 0000000..518a8e1
--- /dev/null
+++ b/src/buildings.s
@@ -0,0 +1,6 @@
+  ; places a building at the current cursor position
+  ; performs pre-checks and displays an error 
+  ; if pre-conditions for building fail
+  ; e.g. not enough resources, not enough space
+building_build:
+  ret
diff --git a/src/defs.s b/src/defs.s
index caddd6f..8f9f21a 100644
--- a/src/defs.s
+++ b/src/defs.s
@@ -88,3 +88,10 @@
   ; custom parameter
 .de act_p0, 1
 .de act_size, 0
+
+  ; building selection
+.se 0
+.de BT_ROAD, 1
+.de BT_WAREHOUSE, 1
+.de BT_FARM, 1
+.de BT_LUMBER, 1
diff --git a/src/main.s b/src/main.s
index 87541ba..67da840 100644
--- a/src/main.s
+++ b/src/main.s
@@ -65,6 +65,7 @@ main:
 #include "map.s"
 #include "simulation.s"
 #include "state.s"
+#include "buildings.s"
 #include "tiles.inc"
 
 ; fill bank
diff --git a/src/ui.s b/src/ui.s
index 8fd09e7..90a72b0 100644
--- a/src/ui.s
+++ b/src/ui.s
@@ -22,6 +22,15 @@ ui_cursor_label_table:
   dw STR_FARM
   dw STR_LUMBER
 
+  ; converts from UI cursor position
+  ; to building type 
+ui_to_building_selecction_table:
+  .db BT_WAREHOUSE
+  .db BT_ROAD
+  .db BT_FARM
+  .db BT_LUMBER
+
+
   ; inits UI
 ui_init:
   call ui_draw
@@ -148,5 +157,20 @@ ui_building_selector_inputs:
     ret
 @not_left:
 
+  input_just BTNA
+  jr z, @not_a REL
+    
+    ; load building to be built into building selector 
+    ld a, [ui_cursor_pos]
+    ld d, 0
+    ld e, a
+    ld hl, ui_to_building_selecction_table
+    add hl, de ; hl = correct value 
+    ld a, [hl]
+    ld [cursor_selected_building], a 
+    ld bc, st_ui_buildung_selector_exit
+    ret
+@not_a:
+
   ldnull bc
   ret
diff --git a/src/wram.s b/src/wram.s
index 0a02205..cc254c2 100644
--- a/src/wram.s
+++ b/src/wram.s
@@ -37,6 +37,9 @@ cursor_x: .adv 1
 cursor_move_y: .adv 1
 cursor_move_x: .adv 1
 
+  ; enum of type BT_
+cursor_selected_building: .adv 1
+
   ; +/-1 for each time the cursor moves
   ; allows us to move scroll when needed 
 scroll_move_y: .adv 1
@@ -46,12 +49,12 @@ scroll_move_x: .adv 1
 scroll_y: .adv 1
 scroll_x: .adv 1
 
-money: .adv 3
-debt: .adv 3
-demand_house: .adv 1
-demand_shop: .adv 1
-demand_factory: .adv 1
-population: .adv 3
+  ; resources
+r_gold: .adv 2
+r_lumber: .adv 2
+r_stone: .adv 2
+r_food: .adv 2
+r_population: .adv 2
 
 state_cells: .adv c_size * MAP_SIZE
 state_cells_end: