src/game/player.c

   1 #include "player.h"
   2
   3 #include "engine/asset.h"
   4 #include "engine/render.h"
   5
   6 #include "level.h"
   7
   8 static const float movementSpeed = 2.5f;
   9
  10 Scene* playerCharacter;
  11 static Transform screenToWorldMovementTransform;
  12 static Vector worldMovementUp;
  13 static Vector worldMovementDown;
  14 static Vector worldMovementLeft;
  15 static Vector worldMovementRight;
  16 static Direction movementDirection;
  17
  18 static void movePlayer(Vector direction, float delta);
  19 static Vector worldMovementDirection(float x, float y);
  20
  21
  22
  23 void initPlayer() {
  24         screenToWorldMovementTransform = identity();
  25         rotate(&screenToWorldMovementTransform, (Vector) { 0.0f, 1.0f, 0.0f }, - TAU / 8.0f);
  26
  27         worldMovementUp = worldMovementDirection(0.0f, 1.0f);
  28         worldMovementDown = worldMovementDirection(0.0f, -1.0f);
  29         worldMovementLeft = worldMovementDirection(-1.0f, 0.0f);
  30         worldMovementRight = worldMovementDirection(1.0f, 0.0f);
  31
  32         playerCharacter = newScene();
  33         cameraAnchor = playerCharacter;
  34         playerCharacter->solid = importSolid("assets/playercharacter.3ds");
  35 }
  36
  37 void spawnPlayer(Transform transform) {
  38         playerCharacter->transform = transform;
  39         reparentScene(playerCharacter, currentScene);
  40 }
  41
  42 void updatePlayer(float delta) {
  43         Vector direction = { 0.0f, 0.0f, 0.0f };
  44         if (movementDirection & DIRECTION_UP) {
  45                 direction = addVectors(direction, worldMovementUp);
  46         }
  47         if (movementDirection & DIRECTION_DOWN) {
  48                 direction = addVectors(direction, worldMovementDown);
  49         }
  50         if (movementDirection & DIRECTION_LEFT) {
  51                 direction = addVectors(direction, worldMovementLeft);
  52         }
  53         if (movementDirection & DIRECTION_RIGHT) {
  54                 direction = addVectors(direction, worldMovementRight);
  55         }
  56         movePlayer(direction, delta);
  57 }
  58
  59 void startMovement(Direction direction) {
  60         movementDirection |= direction;
  61 }
  62
  63 void stopMovement(Direction direction) {
  64         movementDirection &= ~direction;
  65 }
  66
  67 static void movePlayer(Vector direction, float delta) {
  68         direction = clampMagnitude(direction, 1.0f);
  69         Vector displacement = scaleVector(direction, delta * movementSpeed);
  70
  71
  72         //GridLocation location = gridLocationFromTransform(playerCharacter->transform);
  73
  74         if (displacement.x >= 0) {
  75                 // need to test +X edge
  76         }
  77         if (displacement.x <= 0) {
  78                 // need to test -X edge
  79         }
  80         if (displacement.z >= 0) {
  81                 // need to test +Z edge
  82         }
  83         if (displacement.z <= 0) {
  84                 // need to test -Z edge
  85         }
  86
  87
  88         translate(&playerCharacter->transform, displacement);
  89 }
  90
  91 static Vector worldMovementDirection(float x, float y) {
  92         Vector direction = (Vector) { x, 0.0f, -y };
  93         direction = normalized(
  94                 applyTransform(screenToWorldMovementTransform, direction));
  95         return direction;
  96 }