Implement collision handling

1 files changed, 51 insertions, 4 deletions

diff --git a/src/control/MapContext.ts b/src/control/MapContext.ts
index 48e8b9e..4e69408 100644
--- a/src/control/MapContext.ts
+++ b/src/control/MapContext.ts
@@ -19,7 +19,18 @@ export default class MapContext {
         playerEntity: EntityPosition;
 
 
+        collision: number[][];
+
+
         constructor(private map: MapData, private inputHandler: InputHandler) {
+                this.collision = new Array(map.width);
+                for (let i = 0; i < map.width; i++) {
+                        this.collision[i] = new Array(map.height);
+
+                        for (let j = 0; j < map.height; j++)
+                                this.collision[i][j] = map.collision[j][i] == '0' ? 0 : 1;
+                }
+
                 this.playerEntity = new EntityPosition(
                         new Entity('square'),
                         new Position(8, 8),
@@ -28,6 +39,12 @@ export default class MapContext {
 
                 this.addEntity(this.playerEntity);
 
+                this.addEntity(new EntityPosition(
+                        new Entity('square'),
+                        new Position(10, 10),
+                        Direction.East
+                ));
+
                 this.view = new MapView(
                         map,
                         this.entities,
@@ -41,24 +58,49 @@ export default class MapContext {
                 });
         }
 
+
+        private incCollision(p: Position) {
+                if (this.collision[p.x] && !_.isUndefined(this.collision[p.x][p.y]))
+                        this.collision[p.x][p.y]++;
+        }
+
+        private decCollision(p: Position) {
+                if (this.collision[p.x] && !_.isUndefined(this.collision[p.x][p.y]))
+                        this.collision[p.x][p.y]--;
+        }
+
+        private collides(p: Position): boolean {
+                if (this.collision[p.x] && !_.isUndefined(this.collision[p.x][p.y]))
+                        return (this.collision[p.x][p.y] > 0);
+                else
+                        return true;
+        }
+
         private addEntity(entity: EntityPosition) {
                 this.entities.push(entity);
+
+                this.incCollision(entity.position);
         }
 
         private addTransition(entity: EntityPosition, dest: Position, start: number, dur: number) {
                 entity.transition = new Transition(start, start+dur, entity.position, dest);
+
+                this.incCollision(dest);
         }
 
         private finishTransition(entity: EntityPosition) {
+                this.decCollision(entity.position);
+
                 entity.position = entity.transition.dest;
                 entity.transition = null;
+
         }
 
         private updateState(time: number): boolean {
                 var ret = false;
 
                 while (true) {
-                        var origTime = time;
+                        let origTime = time;
 
                         if (this.playerEntity.transition && this.playerEntity.transition.end <= time) {
                                 origTime = this.playerEntity.transition.end;
@@ -69,7 +111,7 @@ export default class MapContext {
                         if (this.playerEntity.transition)
                                 return true;
 
-                        var dir: Direction = null;
+                        let dir: Direction = null;
 
                         if (this.inputHandler.keys[InputHandler.Up])
                                 dir = Direction.North;
@@ -84,8 +126,13 @@ export default class MapContext {
                                 return ret;
 
                         this.playerEntity.direction = dir;
-                        this.addTransition(this.playerEntity, this.playerEntity.position.translate(dir, 1),
-                                      origTime, 250);
+                        ret = true;
+
+                        let dest = this.playerEntity.position.translate(dir, 1);
+                        if (this.collides(dest))
+                                return true;
+
+                        this.addTransition(this.playerEntity, dest, origTime, 250);
                 }
         }
 }