Failed attempt to build collision detection

assets/level1.json

@@ -47,8 +47,30 @@
                  "type":"player",
                  "visible":true,
                  "width":16,
-                 "x":16,
+                 "x":0,
-                 "y":32
+                 "y":0
+                }],
+         "opacity":1,
+         "type":"objectgroup",
+         "visible":true,
+         "x":0,
+         "y":0
+        }, 
+        {
+         "draworder":"topdown",
+         "id":6,
+         "name":"colliders",
+         "objects":[
+                {
+                 "height":60.5,
+                 "id":7,
+                 "name":"",
+                 "rotation":0,
+                 "type":"collider",
+                 "visible":true,
+                 "width":47.75,
+                 "x":95.75,
+                 "y":55.5
                 }],
          "opacity":1,
          "type":"objectgroup",
@@ -56,8 +78,8 @@
          "x":0,
          "y":0
         }],
- "nextlayerid":6,
+ "nextlayerid":7,
- "nextobjectid":2,
+ "nextobjectid":8,
  "orientation":"orthogonal",
  "renderorder":"right-down",
  "tiledversion":"1.5.0",

assets/level1.tmx

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<map version="1.5" tiledversion="1.5.0" orientation="orthogonal" renderorder="right-down" width="20" height="15" tilewidth="16" tileheight="16" infinite="0" nextlayerid="6" nextobjectid="2">
+<map version="1.5" tiledversion="1.5.0" orientation="orthogonal" renderorder="right-down" width="20" height="15" tilewidth="16" tileheight="16" infinite="0" nextlayerid="7" nextobjectid="8">
  <editorsettings>
   <export target="level1.json" format="json"/>
  </editorsettings>
@@ -43,6 +43,9 @@
 </data>
  </layer>
  <objectgroup id="5" name="objects">
-  <object id="1" name="player" type="player" x="16" y="32" width="16" height="16"/>
+  <object id="1" name="player" type="player" x="0" y="0" width="16" height="16"/>
+ </objectgroup>
+ <objectgroup id="6" name="colliders">
+  <object id="7" type="collider" x="95.75" y="55.5" width="47.75" height="60.5"/>
  </objectgroup>
 </map>

entities/player_entity.wren

@@ -2,26 +2,48 @@ import "graphics" for ImageData, Canvas
 import "./controls" for Controls
 import "./config" for Config
 class Player {
-    construct new(x,y) {
+    construct new(x,y, gameState) {
+        __gameState = gameState
         _x = x
         _y = y
 
         _playerSprite = ImageData.loadFromFile("assets/sprites/player.png")
     }
 
+    x { _x }
+    y { _y }
+    w { 16 }
+    h {  16 }
+
     update() {
-        if(Controls.isKeyDown(Config.KeyboardConstants["UP"])) {
+
+        var collided = __gameState.checkCollision(this)
+       
+        if(Controls.isKeyDown(Config.KeyboardConstants["UP"]) && !collided) {
             _y = _y - 1
-        }
+        } else if(Controls.isKeyDown(Config.KeyboardConstants["UP"]) && collided){
-        if(Controls.isKeyDown(Config.KeyboardConstants["DOWN"])) {
             _y = _y + 1
         }
-        if(Controls.isKeyDown(Config.KeyboardConstants["LEFT"])) {
+
-            _x = _x - 1
+        if(Controls.isKeyDown(Config.KeyboardConstants["DOWN"]) && !collided) {
+            _y = _y + 1
+        } else if(Controls.isKeyDown(Config.KeyboardConstants["DOWN"]) && collided){
+            _y = _y - 1
         }
-        if(Controls.isKeyDown(Config.KeyboardConstants["RIGHT"])) {
+
+        if(Controls.isKeyDown(Config.KeyboardConstants["LEFT"]) && !collided) {
+            _x = _x - 1
+        } else if(Controls.isKeyDown(Config.KeyboardConstants["LEFT"]) && collided){
             _x = _x + 1
         }
+
+        if(Controls.isKeyDown(Config.KeyboardConstants["RIGHT"]) && !collided) {
+            _x = _x + 1
+        } else if(Controls.isKeyDown(Config.KeyboardConstants["RIGHT"]) && collided){
+            _x = _x - 1
+        }
+
+
     }
 
     draw(dt) {

game_state.wren

@@ -11,7 +11,8 @@ class GameState {
         AudioEngine.load("select","assets/sfx/select.wav")
         AudioEngine.load("credit","assets/musics/Juhani Junkala [Retro Game Music Pack] Ending.wav")
         _fullScreen = false
-
+        _entities = []
+        _collidables = []
         setupStates()
     }
 
@@ -31,15 +32,49 @@ class GameState {
 
     switch(level) {
         AudioEngine.stopAllChannels()
+        _entities.clear()
+        _collidables.clear()
         _currentLevel = __gameStates[level].new(this)
         System.print("Current Level : %(__gameStates[level].name)")
     }
 
     update() {
         _currentLevel.update()
+        for(entity in _entities) {
+            entity.update()
+        }
     }
 
     draw(dt) {
         _currentLevel.draw(dt)
+        for(entity in _entities) {
+            entity.draw(dt)
+        }
+    }
+
+    addEntities(entity) {
+        _entities.add(entity)
+    }
+
+    addCollidable(collidable) {
+        _collidables.add(collidable)
+    }
+
+    checkCollision(entity) {
+        var collide = false
+        for(collidable in _collidables) {
+            System.print(entity.x)
+            var entityX = entity.x
+            var entityY = entity.y
+            if(entityX < (collidable["x"] + collidable["width"]) &&
+                (entityX + entity.w) > collidable["x"] &&
+                entityY < (collidable["y"] + collidable["height"]) &&
+                (entityY + entity.h) > collidable["y"]) {
+                collide = true
+                break
+            }
+        }
+
+        return collide
     }
 }

layer_type.wren

@@ -8,4 +8,5 @@ class ObjectType {
     static PLAYER { "player" }
     static NPC { "npc" }
     static ENEMY { "enemy" }
+    static COLLIDER { "collider" }
 }

level_map.wren

@@ -4,7 +4,8 @@ import "math" for Math
 import "./layer_type" for LayerType, ObjectType
 import "./entities/player_entity" for Player
 class LevelMap {
-    construct new(mapName) {
+    construct new(mapName, gameState) {
+        __gameState = gameState
         _mapData = Json.load("assets/%(mapName).json")
         var tileSheetData =  _mapData["tilesets"][0] // Assuming there is only a single tilesheet/level
         _tileSheet = ImageData.loadFromFile("assets/%(tileSheetData["image"])")
@@ -21,8 +22,8 @@ class LevelMap {
             "x": 0,
             "y": 0
         }
+        _levelEntities = []
         placeObjects()
-
     }
 
     playerPos = (position) { 
@@ -40,22 +41,24 @@ class LevelMap {
                             "x": object["x"],
                             "y": object["y"]
                         }
-                        _player = Player.new(playerPos["x"], playerPos["y"])                        
+                        _player = Player.new(playerPos["x"], playerPos["y"], __gameState)
+                        __gameState.addEntities(_player)
+                    }
+
+                    if(object["type"]==ObjectType.COLLIDER) {
+                        __gameState.addCollidable({
+                            "x": Math.floor(object["x"]),
+                            "y": Math.floor(object["y"]), 
+                            "width": Math.floor(object["width"]),
+                            "height": Math.floor(object["height"])
+                        })
                     }
                 }
             }
         }
     }
 
-    draw(dt) {
+    draw(x, y) {
-        _player.draw(dt)
-    }
-
-    update() {
-        _player.update()
-    }
-
-    render(x, y) {
         var startX = x
         var startY = y
         for(layer in _layers) {

levels/level1.wren

@@ -5,20 +5,20 @@ import "./config" for Config
 class Level1 { 
     construct new(gameState) {
         __gameState = gameState
-        _level1 = LevelMap.new("level1")
+        _level1 = LevelMap.new("level1", __gameState)
         var channel = AudioEngine.play("level1_bg")
         channel.volume = 0.2
     }
 
     update() {
+        
         if(Controls.justPressed(Config.KeyboardConstants["ATTACK"])) {
         }
 
-        _level1.update()
+        
     }
 
     draw(dt) {
-        _level1.render(0,0)
+        _level1.draw(0,0)
-        _level1.draw(dt)
     }
 }