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#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 = 90.0,
.projection = CAMERA_PERSPECTIVE
},
.cameraAngle = Vector2Zero()
};
}
// Fake physics, distance from ground.
void updatePlayerHeight(Player* player, Game* game)
{
float height = getWorldHeightAtLocation(
&game->world, player->position.x, player->position.z) + PLAYER_HEIGHT;
player->position.y = height;
}
void updatePlayerMovement(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};
// Walking around.
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, PLAYER_SPEED);
// Apply velocity.
player->position = Vector3Add(
player->position, Vector3Scale(player->velocity, GetFrameTime()));
updatePlayerHeight(player, game);
// Apply camera.
camera->position = player->position;
camera->target = Vector3Add(player->position, player->direction);
}
bool playerCanEntityBeSelected(Player* player, Entity* entity)
{
float maxDistance = PLAYER_MAX_SELECT_DISTANCE;
maxDistance += Vector3Distance(entity->box.min, entity->box.max) / 2.0;
return Vector3Distance(player->position, entity->position) <= maxDistance;
}
void playerInteractWithEntity(Player* player, Entity* entity, Game* game)
{
printf("%d\n", interactWithEntity(entity, game, SELECTION_INTERACT));
}
void playerUpdateSelectedEntity(Player* player, Entity* entity, Game* game)
{
if (!playerCanEntityBeSelected(player, entity))
{
return;
}
DrawBoundingBox(entity->box, RED);
if (IsKeyPressed(game->settings.interactKey))
{
playerInteractWithEntity(player, entity, game);
}
}
// TODO: move magic numbers to settings
void updatePlayer(Player* player, Game* game)
{
updatePlayerMovement(player, game);
Ray ray = (Ray){
.position = player->position,
.direction = player->direction
};
DrawRay(ray, YELLOW);
WorldUID uid = castRayAtWorld(&game->world, ray, false, NULL);
if (uid != -1)
{
playerUpdateSelectedEntity(player, &game->world.entities[uid], game);
}
}
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