Heightmap, player, and more concepts

1 files changed, 75 insertions, 0 deletions

diff --git a/src/player.c b/src/player.c
new file mode 100644
index 0000000..ec6eaf2
--- /dev/null
+++ b/src/player.c
@@ -0,0 +1,75 @@
+#include "player.h"
+#include "game.h"
+
+Player createPlayer()
+{
+  return (Player){
+    .position = Vector3Zero(),
+    .direction = (Vector3){0.0, 0.0, 0.0},
+    .velocity = Vector3Zero(),
+    .camera = (Camera){
+      .position = (Vector3){0.0, 0.0, 0.0},
+      .target = Vector3Zero(),
+      .up = (Vector3){0.0, 1.0, 0.0},
+      .fovy = 100,
+      .projection = CAMERA_PERSPECTIVE
+    },
+    .cameraAngle = Vector2Zero()
+  };
+}
+
+// TODO: move magic numbers to settings
+void updatePlayer(Player* player, Game* game)
+{
+  Camera* camera = &player->camera;
+  Vector2* cameraAngle = &player->cameraAngle;
+  Settings* settings = &game->settings;
+
+  // Get mouse speed.
+  Vector2 mouseSpeed = Vector2Scale(GetMouseDelta(), settings->mouseSpeed);
+  mouseSpeed = Vector2Scale(mouseSpeed, 1.0 / (PI * 2.0));
+
+  // Update camera angle.
+  *cameraAngle = Vector2Add(*cameraAngle, mouseSpeed);
+  cameraAngle->x = Wrap(cameraAngle->x, -PI, PI);
+  cameraAngle->y = Clamp(cameraAngle->y, -PI / 2.5, PI / 2.5);
+
+  // Set player direction
+  Matrix matrix = MatrixRotateXYZ(
+    (Vector3){-cameraAngle->y, cameraAngle->x, 0.0});
+  player->direction = (Vector3){matrix.m2, matrix.m6, matrix.m10};
+
+  // Player movement.
+  player->velocity = Vector3Zero();
+
+  if (IsKeyDown(settings->forwardKey))
+  {
+    player->velocity.z += cosf(cameraAngle->x);
+    player->velocity.x += -sinf(cameraAngle->x);
+  }
+  if (IsKeyDown(settings->leftKey))
+  {
+    player->velocity.z += cosf(cameraAngle->x - (PI / 2.0));
+    player->velocity.x += -sinf(cameraAngle->x - (PI / 2.0));
+  }
+  if (IsKeyDown(settings->backwardKey))
+  {
+    player->velocity.z += -cosf(cameraAngle->x);
+    player->velocity.x += sinf(cameraAngle->x);
+  }
+  if (IsKeyDown(settings->rightKey))
+  {
+    player->velocity.z += cosf(cameraAngle->x + (PI / 2.0));
+    player->velocity.x += -sinf(cameraAngle->x + (PI / 2.0));
+  }
+
+  player->velocity = Vector3Scale(player->velocity, 5.0);
+
+  // Apply velocity
+  player->position = Vector3Add(
+    player->position, Vector3Scale(player->velocity, GetFrameTime()));
+  
+  // Apply camera.
+  camera->position = player->position;
+  camera->target = Vector3Add(player->position, player->direction);
+}