add doors and keys

src/assets/tiled/first.tmx

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<map version="1.10" tiledversion="1.11.2" orientation="orthogonal" renderorder="right-down" width="20" height="15" tilewidth="8" tileheight="8" infinite="0" nextlayerid="3" nextobjectid="1">
+<map version="1.10" tiledversion="1.11.2" orientation="orthogonal" renderorder="right-down" width="20" height="15" tilewidth="8" tileheight="8" infinite="0" nextlayerid="4" nextobjectid="1">
  <tileset firstgid="1" source="tileset.tsx"/>
  <layer id="1" name="Actors" width="20" height="15">
   <data encoding="csv">
@@ -7,15 +7,15 @@
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,7,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,91,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,5,0,0,0,41,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,40,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,53,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 </data>
@@ -35,10 +35,10 @@
 0,0,0,0,17,0,0,0,0,0,0,0,0,20,0,0,0,0,0,0,
 0,0,0,0,17,0,0,0,0,0,0,0,0,20,0,0,0,0,0,0,
 0,0,0,0,17,0,0,0,0,0,0,0,0,20,0,0,0,0,0,0,
-0,0,0,0,83,2,2,68,2,2,2,37,67,36,0,0,0,0,0,0,
+0,0,0,0,83,2,2,68,0,2,2,2,67,36,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,17,0,0,0,20,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,17,0,0,0,20,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,33,2,2,2,36,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 </data>
  </layer>

src/assets/tiled/tileset.tsx

@@ -6,9 +6,19 @@
    <property name="type" value="player"/>
   </properties>
  </tile>
+ <tile id="39">
+  <properties>
+   <property name="type" value="locked_door"/>
+  </properties>
+ </tile>
  <tile id="40">
   <properties>
    <property name="type" value="pot"/>
   </properties>
  </tile>
+ <tile id="90">
+  <properties>
+   <property name="type" value="key"/>
+  </properties>
+ </tile>
 </tileset>

src/entity.zig

@@ -15,11 +15,15 @@ pub const Type = enum {
     player,
     solid,
     pot,
+    door,
+    key,
 };
 
 type: Type,
 position: Vec2,
 
+locked: bool = false,
+
 render_tile: ?union(enum) {
     position: Vec2,
     id: Gfx.TileId

src/game.zig

@@ -132,6 +132,11 @@ fn loadLevelFromTiled(gpa: Allocator, map: tiled.Map) !Level {
                 };
                 if (std.mem.eql(u8, tile_type, "player")) {
                     entity.type = .player; 
+                } else if (std.mem.eql(u8, tile_type, "key")) {
+                    entity.type = .key;
+                } else if (std.mem.eql(u8, tile_type, "locked_door")) {
+                    entity.type = .door; 
+                    entity.locked = true; 
                 } else if (std.mem.eql(u8, tile_type, "pot")) {
                     entity.type = .pot; 
                 } else if (is_layer_solid) {
@@ -214,7 +219,9 @@ fn canMove(self: *Game, entity: *Entity, dir: Vec2) bool {
     return true;
 }
 
-fn moveEntity(self: *Game, entity: *Entity, dir: Vec2) bool {
+fn moveEntity(self: *Game, entity_id: Entity.Id, dir: Vec2) bool {
+    const entity = self.level.entities.get(entity_id) orelse return true;
+
     if (entity.type == .solid) {
         return false;
     }
@@ -226,7 +233,21 @@ fn moveEntity(self: *Game, entity: *Entity, dir: Vec2) bool {
     const next_pos = entity.position.add(dir);
     if (self.getEntityAt(next_pos)) |next_entity_id| {
         const next_entity = self.level.entities.getAssumeExists(next_entity_id);
-        if (!self.moveEntity(next_entity, dir)) {
+        if (next_entity.type == .door and next_entity.locked and entity.type == .key) {
+            _ = self.level.entities.removeAssumeExists(entity_id);
+            next_entity.locked = false;
+            return true;
+        }
+
+        if (next_entity.type == .pot or next_entity.type == .key) {
+            if (!self.moveEntity(next_entity_id, dir)) {
+                return false;
+            }
+        } else if (next_entity.type == .door) {
+            if (next_entity.locked) {
+                return false;
+            }
+        } else if (next_entity.type == .nil) {
             return false;
         }
     }
@@ -251,6 +272,26 @@ pub fn getInput(self: *Game, window: *Window) Input {
     };
 }
 
+fn drawEntity(self: *Game, entity: *Entity) void {
+    _ = self; // autofix
+    if (entity.render_tile) |render_tile| {
+        var tile_coord = switch (render_tile) {
+            .id => |tile_id| Gfx.getTileCoords(tile_id),
+            .position => |position| position
+        };
+
+        if (entity.type == .door) {
+            if (entity.locked) {
+                tile_coord = Gfx.getTileCoords(.locked_door);
+            } else {
+                tile_coord = Gfx.getTileCoords(.open_door);
+            }
+        }
+
+        Gfx.drawTile(tile_coord, entity.position, .init(1,1), rgb(255, 255, 255));
+    }
+}
+
 pub fn tick(self: *Game, input: Input) !void {
     Gfx.drawRectangle(.init(0, 0), .init(self.canvas_size.x, self.canvas_size.y), rgb_hex("#222323").?);
     if (self.show_grid) {
@@ -284,17 +325,26 @@ pub fn tick(self: *Game, input: Input) !void {
     }
 
     var iter = self.level.entities.iterator();
-    while (iter.nextItem()) |entity| {
+    while (iter.next()) |tuple| {
+        const entity = tuple.item;
+        const entity_id = tuple.id;
         if (entity.type == .player) {
-            _ = self.moveEntity(entity, move);
+            _ = self.moveEntity(entity_id, move);
+        }
     }
 
-        if (entity.render_tile) |render_tile| {
+    iter = self.level.entities.iterator();
-            switch (render_tile) {
+    while (iter.nextItem()) |entity| {
-                .id => |tile_id| Gfx.drawTileById(tile_id, entity.position, .init(1,1), rgb(255, 255, 255)),
+        if (entity.type != .player) {
-                .position => |position| Gfx.drawTile(position, entity.position, .init(1,1), rgb(255, 255, 255)),
+            self.drawEntity(entity);
         }
     }
+
+    iter = self.level.entities.iterator();
+    while (iter.nextItem()) |entity| {
+        if (entity.type == .player) {
+            self.drawEntity(entity);
+        }
     }
 }
 

src/graphics.zig

@@ -455,7 +455,9 @@ pub const ImageId = enum {
 };
 
 pub const TileId = enum {
-    player
+    player,
+    open_door,
+    locked_door
 };
 
 pub const Borders = struct {
@@ -843,7 +845,9 @@ pub fn init(options: Options) !void {
     tilemap_size = Vec2.init(@floatFromInt(tilemap.width), @floatFromInt(tilemap.height));
 
     tile_coords = .init(.{
-        .player = .init(4, 0)
+        .player = .init(4, 0),
+        .locked_door = .init(7, 2),
+        .open_door = .init(5, 2)
     });
 
     var image_iter = image_map.iterator();
@@ -983,6 +987,10 @@ pub fn drawTileById(tile_id: TileId, pos: Vec2, size: Vec2, tint: Vec4) void {
     drawTile(tile_coord, pos, size, tint);
 }
 
+pub fn getTileCoords(tile_id: TileId) Vec2 {
+    return tile_coords.get(tile_id);
+}
+
 pub fn drawRectanglOutline(pos: Vec2, size: Vec2, color: Vec4, width: f32) void {
     // TODO: Don't use line segments
     drawLine(pos, pos.add(.{ .x = size.x, .y = 0 }), color, width);