Radar working

1 files changed, 106 insertions, 0 deletions

diff --git a/src/radar.c b/src/radar.c
new file mode 100644
index 0000000..1aca7ca
--- /dev/null
+++ b/src/radar.c
@@ -0,0 +1,106 @@
+#include "radar.h"
+#include "game.h"
+#include "entity.h"
+#include "world.h"
+#include "assets.h"
+
+void initRadar(Radar * radar) {
+    resetRadarPosition(radar);
+
+    radar->camera = (Camera3D){
+        .fovy = 45.0,
+        .projection = CAMERA_PERSPECTIVE,
+        .target = Vector3Zero(),
+        .position = (Vector3){RADAR_CAMERA_DISTANCE, RADAR_CAMERA_DISTANCE, RADAR_CAMERA_DISTANCE},
+        .up = (Vector3){0.0, 1.0, 0.0}
+    };
+
+    radar->texture = LoadRenderTexture(RADAR_TEXTURE_SIZE, RADAR_TEXTURE_SIZE);
+}
+
+void closeRadar(Radar * radar) {
+    UnloadRenderTexture(radar->texture);
+}
+
+void resetRadarPosition(Radar * radar) {
+    float width = GetScreenWidth();
+    float height = GetScreenHeight();
+
+    radar->position = (Vector2){
+        width - RADAR_TEXTURE_SIZE,
+        height - RADAR_TEXTURE_SIZE
+    };
+}
+
+void drawRadar3DParts(Game * game, Radar * radar) {
+    int i;
+
+    World * world = &game->world;
+    Entity * player = getEntityFromWorld(*world, 0);
+
+    BeginTextureMode(radar->texture);
+    ClearBackground(RADAR_COLOR);
+    BeginMode3D(radar->camera);
+
+    // Draw entities on radar. Skip player.
+    for (i = 1; i < world->entitiesCount; ++i) {
+        Entity * entity = &world->entities[i];
+
+        // Too far.
+        if (Vector3Distance(player->position, entity->position) > RADAR_MAX_DISTANCE)
+            continue;
+
+        DrawSphere(
+            Vector3Scale(Vector3Subtract(entity->position, player->position), RADAR_WORLD_SCALE),
+            RADAR_POINT_SIZE,
+            BLACK
+        );
+    }
+
+    Vector3 direction = Vector3Scale(
+        Vector3RotateByQuaternion((Vector3){0.0, 0.0, 1.0}, player->rotation),
+        RADAR_POINT_SIZE * 2.0
+    );
+
+    // Draw player.
+    DrawCylinderWiresEx(
+        Vector3Scale(direction, -1.0),
+        direction,
+        RADAR_POINT_SIZE,
+        0.0,
+        8,
+        BLUE
+    );
+
+    EndMode3D();
+    EndTextureMode();
+
+    // Draw render texture.
+    DrawTextureV(radar->texture.texture, radar->position, WHITE);
+
+}
+
+void drawRadar(Game * game, Radar * radar) {
+    drawRadar3DParts(game, radar);
+
+    // Draw cross.
+    float halfWayPoint = RADAR_TEXTURE_SIZE / 2.0;
+
+    // Top to bottom.
+    // DrawLine(
+    //     radar->position.x + halfWayPoint,
+    //     radar->position.y,
+    //     radar->position.x + halfWayPoint,
+    //     radar->position.y + RADAR_TEXTURE_SIZE,
+    //     RADAR_CROSS_COLOR
+    // );
+    //
+    // // Left to right.
+    // DrawLine(
+    //     radar->position.x,
+    //     radar->position.y + halfWayPoint,
+    //     radar->position.x + RADAR_TEXTURE_SIZE,
+    //     radar->position.y + halfWayPoint,
+    //     RADAR_CROSS_COLOR
+    // );
+}